UNIVERSITY OF MARIBOR...UNIVERSITY OF MARIBOR FACULTY OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE ANNUAL REPORT RESEARCH ACTIVITIES 2006 MARIBOR, APRIL 2007 UNIVERSITY OF MARIBOR

UNIVERSITY OF MARIBOR

FACULTY OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE

ANNUAL REPORT RESEARCH ACTIVITIES 2006

MARIBOR, APRIL 2007

UNIVERSITY OF MARIBOR FACULTY OF ELECTRICAL ENGINEERING

AND COMPUTER SCIENCE Smetanova ulica 17, 2000 MARIBOR

SLOVENIA Phone: +386 2 220 70 00

Fax: +386 2 251 11 78 http://www.feri.uni-mb.si

ANNUAL REPORT Research activities 2006

Editors: Dr. Danilo Korže and Prof. Dr. Borut Žalik

Copy edit: George Yeoman, MA

Database design: Štefan Masič

Word-processing converter design: Dr. Danilo Korže

Photos and text processing: Dr. Danilo Korže

Photos: Gerhard Angleitner, MSc

Typography and cover design: Dr. Miha Završnik and Repro studio OK, d. o. o., Maribor

ISSN 1408-6328

Published by: Faculty of Electrical Engineering and Computer Science,

Maribor

Print: Publishing and Printing Dept. of Technical Faculties of Maribor

Number of copies: 250

Year of publication: April 2007

CONTENTS

FOREWORD ................................................................................................... FW – 4

Study Programmes, Options and Emphasis .......................................................... FW – 5

Graduates of the Faculty of Electrical Engineering and Computer Science .......... FW – 16

Masters and PhD Degrees ..................................................................................... FW – 17

Research by Institutes and Laboratories ............................................................... FW – 22

Programme Units ................................................................................................... FW – 24

INSTITUTE OF AUTOMATION ....................................................................... AU – 1

Systems and Control Laboratory ........................................................................... AU – 4

Signal Processing and Remote Control Laboratory ............................................... AU – 15

Process Automation Laboratory ............................................................................ AU – 25

Measurements Laboratory ..................................................................................... AU – 31

Electro–Optical and Sensor Systems Laboratory .................................................. AU – 37

INSTITUTE OF ELECTRONICS AND TELECOMMUNICATIONS ................ EL – 1

Digital and Information Systems Laboratory .......................................................... EL – 4

Electronic Systems Laboratory .............................................................................. EL – 10

Microcomputer Systems Laboratory ...................................................................... EL – 11

Digital Signal Processing Laboratory ..................................................................... EL – 16

INSTITUTE OF POWER ENGINEERING ....................................................... PE – 1

Electrical Machines Laboratory .............................................................................. PE – 4

Power Engineering Laboratory ............................................................................. PE – 11

Electromechanical Systems Control Laboratory .................................................... PE – 30

Fundamentals and Theory of Electrotechnics Laboratory ..................................... PE – 37

Applied Electromagnetics Laboratory .................................................................... PE – 41

INSTITUTE OF ROBOTICS ............................................................................ RO – 1

Power Electronics Laboratory ................................................................................ RO – 4

Industrial Robotics Laboratory ............................................................................... RO – 12

Kinematics and Simulations Laboratory ................................................................. RO – 31

INSTITUTE OF MATHEMATICS AND PHYSICS ........................................... MP – 1

Applied Mathematics Laboratory ........................................................................... MP – 3

INSTITUTE OF COMPUTER SCIENCE ......................................................... CS – 1

Computer Graphics and Artificial Intelligence Laboratory ...................................... CS – 5

Computer Architecture and Languages Laboratory ............................................... CS – 7

System Design Laboratory ..................................................................................... CS – 12

System Software Laboratory .................................................................................. CS – 22

Heterogenous Computer Systems Laboratory ....................................................... CS – 34

Geometric Modelling and Multimedia Algorithms Laboratory ................................ CS – 37

Programming Methodologies Laboratory ............................................................... CS – 48

INSTITUTE OF INFORMATICS ...................................................................... IN – 1

Information Systems Laboratory ............................................................................ IN – 4

Database Technologies Laboratory ....................................................................... IN – 23

Computer Mediated Communication Laboratory ................................................... IN – 37

Real–Time Systems Laboratory ............................................................................ IN – 40

INSTITUTE OF MEDIA COMMUNICATIONS.................................................. MC – 1

Faculty of Electrical Engineering and Computer Science FW – 1

Photo: Gerhard Angleitner

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FW – 2 Faculty of Electrical Engineering and Computer Science

Faculty of Electrical Engineering and Computer Science

Dean: Prof. Dr. Igor Tičar

Institute of Automation

Head: Prof. Dr. Boris Tovornik

Institute of Computer Science

Head: Prof. Dr. Viljem Žumer

Institute of Electronics and Telecommunications

Head: Prof. Dr. Zmago Brezočnik

Institute of Informatics

Head: Prof. Dr. Ivan Rozman

Institute of Mathematics and Physics

Head: Prof. Dr. Vitodrag Kumperščak

Institute of Power Engineering

Head: Prof. Dr. Ivan Zagradišnik

Institute of Robotics

Head: Prof. Dr. Karel Jezernik

Institute of Media Communications

Head: Prof. Dr. Tatjana Welzer-

Družovec


Prof. Dr. Igor Tičar Dean

Prof. Dr. Zmago Brezočnik Deputy Dean of Education

Prof. Dr. Borut Žalik Deputy Dean of Research


FOREWORD

The Faculty of Electrical Engineering and Computer Science is organised into eight institutes: Institute for automatic, Institute for computer science, Institute for electronic and telecommunications, Institute for informatics, Institute for mathematics and physics, Institute for media communications, Institute for power electronics, and the Institute for robotics. These Institutes consist of laboratories, which are specialised for specific research areas. Beside research, the institutes also take care of pedagogical work at professional, university and postgraduate levels. In this way, the scientific and research work are neatly connected with the pedagogical work. The students of higher classes are frequently included in the research projects of the laboratories. In this way, they refresh their theoretical knowledge, they obtain experience and strengthen their engineering enthusiasm, which is extremely important for a creative and successful career. This is the reason why our graduates are respected and saught after in the industry.

In 2006, we completed the long-expected extension of our Faculty – the building G2. Besides the teaching rooms and cabinets, we acquired additional space for scientific work and research. G2 plays the role of a central workpoint. It enables much better working conditions for employees and for our students.

In 2006, most effort has been dedicated to the adaptation of our teaching to the Bologna initiative. We have renewed all studying programmes and introduced some new programmes. Over the next year, the whole generation of the first year students will be educated according to the Bologna initiative. We do not doubt that the connection between education and research work will now be even stronger. This is the reason why I am proud on this report, which confirms, that our faculty is well-ensconced in the research and scientific community at home and worldwide. Our achievements are regularly presented at different scientific conferences and in those scientific journals with high reputations. Despite some financial difficulties, we will orient ourselves even more strongly towards research projects including industrial projects, domestic research projects, and the projects of the European Union. The Faculty's management will support all the prosperous laboratories and take care of the best young researchers. In this way we will definitely build strong research cores at the Faculty, and ensure the competence and excellence of our research and pedagogical work.

Dean Prof. Dr. Igor Tičar


STUDY PROGRAMMES, OPTIONS AND EMPHASIS

Undergraduate studies The Faculty of Electrical Engineering and Computer Science offers two separate types of study programmes, each leading to a different type of degree: academic and professional. Four study programmes with several options are offered towards the academic degrees and two study programmes towards the professional degrees.

The academic-degree study programme in Electrical Engineering includes the following options:

• Automation with concentration on: - Production Automation - Process Automation

• Electronics with concentration on: - Computer Electronics - Telecommunications Electronics

• Power Engineering with concentration on: - Power Engineering - Electromechanical Systems Control - Electromagnetics

• Mechatronics with concentration on: - Communications - Regulations - Instrumentation - Actuation - Embedded Systems - Programmable Tracking Systems

The option of Mechatronics is interdisciplinary, supported by the Faculty of Electrical Engineering and Computer Science and by the Faculty of Mechanical Engineering. The computer science students are also eligible for this option after completing the first two years in computer science.

Academic-degree studies last nine semesters and include lectures, exercises, and practical placements in industry, with the exception of Mechatronics where the duration is eight semesters. The first two years are the same for all options.

The professional higher education programme in Electrical Engineering comprises the following options:


• Automation with concentration on: - Process Automation - Robotics

• Electronics with concentration on: - Industrial Electronics - Computer Electronics

• Power Engineering with concentration on: - Power Engineering - Electromechanical Systems Control - Electromechanical Devices Construction

• Telecommunications

The professional higher education programmes last six semesters consisting of lectures and exercises, and an additional semester of practical placements in industry. The first year of studies is common for all options.

Electrical engineering is also offered as a combined interdisciplinary academic-degree study as electrical engineering with economics. It is organised by the Faculty of Electrical Engineering and Computer Science and by the Faculty of Business and Economics in Maribor. The duration of studies is eight semesters with about 2/3 as major subjects given in electrical engineering and 1/3 in business and economics.

Graduates of electrical engineering with economics are qualified to proceed with their studies towards Masters or PhD degrees either in electrical engineering or in business and economics.

The academic-degree study programme in Electrical Engineering with Economics includes the following options:

• Automation • Electronics • Power Engineering


Electrical Engineering Studies

Academic degree studies Studies to professional higher education degrees

PhD

3rd and 4th Year

Masters degree studies - Electrical Engineering

- Electronic Vacuum Technology

2nd Year

1st Year

Academic degree Professional higher education degree

Undergraduate studies

- Automation (9 semesters) - Electronics (9 semesters) - Power Engineering (9 semesters) - Mechatronics (8 semesters)

Matura Examination (an external examination) or

Professional Matura and additionally an examination in one of the matura

subjects (5th subject)

Undergraduate studies 6 semesters of studies and 1

semester of practice in industry - Automation - Electronics - Power Engineering - Telecommunications

Professional Matura or Matura Examination

(an internal examination)


The academic-degree study programme in Telecommunications consists of two years of study with common fundamental subjects and two additional years with a variety of choices. Therefore, the studies last eight semesters and include lectures, exercises, and practical placements in industry.

Telecommunications Studies

Academic degree studies

PhD

3rd and 4th Year

Masters degree studies

2nd Year

1st Year

Academic degree

Undergraduate studies 8 semesters


Professional Matura and additionallyan examination in one of the matura



The academic-degree study programme in Computer and Information Science includes the following options:

• Software with concentration on: - Systems - Engineering Informatics

• Information Science with concentration on: - Business Information Systems - Process Information Systems

Academic-degree studies last nine semesters and include lectures, exercises, and practical placements in industry. The first two years are the same for all options. After the first two years in computer science studies, students can continue with the mechatronics option within the electrical engineering programme.

The professional higher education programme in Computer and Information Science comprises the following options:

• Software • Information science • Logic and systems

Professional higher education programmes last six semesters consisting of lectures and exercises and an additional semester of practical placements in industry. The first year of studies is common for all options.


Computer and Information Science Studies

Academic degree studies Studies to professional higher education degrees

PhD

3rd and 4th Year

Master degree studies - Computer and Information Science

2nd Year

1st Year

Academic degree Professional higher education degree


- Software - Informatics Science


Professional Matura and additionally an examination in one of the matura


Undergraduate studies 6 semesters of studies and 1 semester of

practice in industry - Logic and Systems - Software - Informatics Science

Professional Matura or Matura Examination (an external examination)


In the academic year 2002/03 the Faculty of Electrical Engineering and Computer Science of Maribor started a new academic studies programme in Media Communications. The first two years are common, while in the third year the students are able to specialise in one of two options:

• RTV Production and

• Interactive Graphic Communication.

The total duration of studies is eight semesters. The title received after a successful completion of diploma work will be a University Diploma in Media Communicology.


Media Communications

Academic degree studies

PhD

3rd and 4th Year

Masters degree studies

2nd Year

1st Year

Academic degree


- RTV Production - Interactive Graphic Communication


Professional Matura and additionallyan examination in one of the matura



Graduate Studies

Graduate studies are basically aimed at the acquisition of in-depth theoretical and applied knowledge, enabling the prospective graduate to carry out independent and creative research in various technical sciences.

Masters degree and PhD studies

In 2006, masters degree and doctoral studies were organised as shown in the preceding diagrams in combination with the undergraduate schemes. It was enhanced with additional subjects. All the subjects were also grouped into two subsets: the smaller one contains majors according to different study options, while the larger group comprises choices. Every student must select at least two majors belonging to his or her study option.

Three graduate programmes are currently being offered:

Electrical Engineering

Electronic Vacuum Technology

Computer and Information Science

Their supervisor selects the following for every graduate student entering the first year of studies:

• the courses that the student will attend and the exams the student will complete • a research project that will be individually assigned to and conducted by the student

The student must collect a minimum of 120 credits during the first two years. Out of this total, 75 credits must be awarded for the examinations, while 45 credits must be awarded for the reports completed on their individual research projects. The student is awarded 15 credits for every passed exam and publicly presented report on individual research projects.

Terms for Progress

The terms of reference for the postgraduate studies are specified by the Statute of the University of Maribor and by annual public scrutiny. Other student obligations are depicted by labels through in the graphical presentation of academic-degree studies.

Minimum of 30 credits.

The student must pass all the exams during the first two years and present the reports on their individual research work with a minimum average grade of 9 (out of 10).


According to the Regulation of Habilitation Procedure for University Teachers, Scientific Workers and Co-workers valid at the Faculty of Electrical Engineering and Computer Science, the student's bibliography must be awarded a minimum of 2 points, based on their scientific research activities. Additionally, a recommendation letter from the student's doctoral studies supervisor is requested.

According to the Regulation of Habilitation Procedure for University Teachers, Scientific Workers and Co-workers valid at the Faculty of Electrical Engineering and Computer Science, the student's bibliography must be awarded a minimum of 2 points, based on their scientific research activities.

During the third year of study, students must report twice on their research work, and once during the fourth year. This totals to 45 credits. Additionally 75 credits must be awarded for a successful presentation and defence of doctoral dissertation. According to the Regulation of Habilitation Procedure for University Teachers, Scientific Workers and Co-workers valid at the Faculty of Electrical Engineering and Computer Science, the student's bibliography must be awarded a minimum of 5 points, based on their scientific research activities. At least 1 point must be awarded for publishing research findings in the journals cited in the INSPEC database.

Masters degree studies are research-oriented and include an introduction to research, the development of students’ capacities for research work in individual scientific fields and disciplines, and the study of subjects providing the in-depth and broad knowledge of subjects needed for the preparation of a masters thesis.

Throughout the programme of study, graduate students can use laboratories and the computer infrastructure of the Faculty of Electrical Engineering and Computer Science, as well as those of other engineering faculties at the university. Studies leading to Masters degrees grant the graduates a professional title of Master of Science in Electrical Engineering or Master of Science in Computer Science.

PhD research is carried out in research laboratories; a more detailed description of these programmes is given in the continuation of this report. Research teams consisting of doctoral students and graduate students for individual areas of research are commonly formed. Some research teams include participants from several laboratories. International contacts developed through the teams are especially important for doctoral students, because this is the only way for them to take part in the international transfer of knowledge and exchange research achievements. Some of our doctoral students carry out part of their research abroad and even have co-mentors in other countries.

We believe that creativity, openness, peer support, and reciprocity are the bedrock of any academic co-operation. Therefore, the Faculty of Electrical Engineering and Computer Science regularly hosts foreign undergraduate, graduate, and postdoctoral students. Our new organisation


of doctoral studies also leads to a greater compatibility with other universities, making it easier for student exchange and mobility.


GRADUATES OF THE FACULTY OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE

Two different types of graduate studies are available: those leading to academic degrees and studies leading to professional higher education degrees. The number of 2006 graduates is given in the table below.

2006 Graduates

Option Professional higher education

degrees

Undergraduate academic degrees

Electrical Engineering 74 48

Computer and Information Science 18 34

Telecommunications – 1

Electrical Engineering with Economics – 10


MASTERS AND PhD DEGREES

13 masters degree students successfully defended their Masters theses and 10 PhD students their dissertations.

2006 Masters theses

Author Date of defence

Title

COBISS number Mentor Co-mentor

Daniel COPOT Jan. 31st, 2006

Koncepti radiofrekvenčnih pretvornikov za gradnjo enokanalnih omrežij za zemeljsko in mobilno digitalno televizijo (Radio frequency repeater concepts for building single frequency networks for terrestrial and mobile digital television)

Dr. Mitja Solar Dr. Bogomir Horvat Saša ČOH Nov. 27th, 2006

Razvoj programske opreme za terminale VoIP (Development of software for VoIP terminals)

Dr. Matjaž Colnarič Iztok FEKONJA Dec. 14th, 2006

Napredna hišna avtomatizacija (Advanced Home Automation)

10966038 Dr. Boris Tovornik Dr. Nenad Muškinja Igor HEDRIH April 17th, 2006

Simulink odprti robotski krmilnik v operacijskem sistemu realnega časa (Simulink open robot controller in real time operating system)

10379286 Dr. Riko Šafarič Dr. Karel Jezernik Jože HRASTNIK Oct. 16th, 2006

Razvoj podpornega kompozitnega izolatorja (Design of composite line-post insulator)

Dr. Jože Pihler Dr. Anton Hamler



Title


Andrej KORAK Jul. 10th, 2006

Zanesljivost vključitve črpalne hidroelektrarne ČHE Kozjak v elektroenergetski sistem (The reliability of the connection of pumped storage power station Kozjak in the existing electrical power system)

10763030 Dr. Josip Voršič Dr. Jože Pihler Andrej KRAJNC Jul. 11th, 2006

Dokumentiranje ogrodij informacijskih rešitev (Documentation of information solutions frameworks)

Dr. Marjan Heričko Srečko LESJAK Jul. 10th, 2006

Analize vključitve ČHE Kozjak v elektroenergetski sistem Slovenije (Analyses of Kozjak PSP connection with the Slovenian electric power system)

10575638 Dr. Josip Voršič Dr. Jože Pihler Bojan PLOJ Jan. 27th, 2006

Nadzor biološko inspiriranega gibanja šesteronožnega mehanizma (Control of a biologically inspired movement of a hexapod mechanism)

10174998 Dr. Matjaž Colnarič Dr. Peter Kokol Marko POLAK Oct. 9th, 2006

Sprotno določanje frekvence elektroenergetskega sistema (On-line power system frequency estimation)

10742038 Dr. Bojan Grčar Dr. Jožef Ritonja Aleš PRISTOVNIK Sept. 6th, 2006

Ogrodje za avtomatsko povezovanje storitev (Framework for automatic composition of webservices)

10927638 Dr. Milan Ojsteršek Dr. Peter Kokol



Title


Gorazd STVARNIK Sept. 6th, 2006

Ovrednotenje zagona in obratovanje bloka 4 termoelektrarne Šoštanj (Evaluation of starting up and operation the power plant 4 in the thermal power plant Šoštanj)

10318870 Dr. Jože Pihler Dr. Josip Voršič Anton ZORKO Jul. 11th, 2006

Prenos merilnih rezultatov s pomočjo tehnologije GPRS (Transport of measurement values with GPRS technology)

10894614 Dr. Zmago Brezočnik Dr. Tatjana Kapus


2006 PhD theses Author Date of defence

Title


Bogdan DUGONIK Jun. 16th, 2006

Načrtovanje generatorjev testnih vektorjev za preverjanje vezij z metodo vgrajenih testov (Built-in-test test pattern generator designing methods)

10544150 Dr. Zmago Brezočnik Gorazd HROVAT Jun. 14th, 2006

Numerično modeliranje povezanega elektro-termomehanskega problema motorsko zaščitnega stikala (The numerical modelling of coupled electro-thermomechanical problem of the motor protection switch)

10516246 Dr. Anton Hambler Dr. Matjaž Hriberšek Peter KITAK April 26th, 2006

Načrtovanje in optimizacija elementov stikalnih naprav z uporabe MKE ob parametrizaciji vhodnega podatkovnega algoritma (Design and optimisation of switching elements using finite elements method with parametrisation of input data algorithm)

10569750 Dr. Jože Pihler Dr. Igor Tičar Marko PODBERŠIČ Oct. 25th, 2006

Algoritmi za zmanjšanje digitalnih preklopnih motenj in izbiranje ustreznih EMI filtrov z meritvijo in frekvenčno analizo merilnih signalov v elektronskih vezjih (Algorithms for digital switching disturbance reduction and appropriate (EMI) filter selection by signal measurements and frequency analysis)

10873110 Dr. Vojko Matko Petra POVALEJ April 12th, 2006

Celični avtomat kot model ansambla klasifikatorjev (Cellular automation as a model for ensemble of classifiers)

10435862 Dr. Peter Kokol Dr. Tatjana Welzer Družovec



Title


Tomislav ROZMAN Nov. 23rd, 2006

Metoda za modeliranje in predstavitev obsežnih delovnih procesov (Methodology for modelling and presentation of complex business processes)

10990870 Dr. Ivan Rozman Dr. Romana Vajde Horvat Damjan STRNAD Jun. 15th, 2006

Modeliranje dreves s fraktalnimi hiperteksturami (Modelling trees with fractal hypertextures)

10534422 Dr. Nikola Guid Evgen URLEP Dec. 18th, 2006

Brezsenzorsko vodenje sinhronega motorja z opazovalnikom magnetnega sklepa trajnega magneta (Sensorless control of permanent magnet synchronous motor using rotor flux observer)

11014934 Dr. Karel Jezernik Aleksander VREŽE Mar. 29th, 2006

Razširitev avtomatskega modeliranja SDL-specifikacij v Promeli z vključevanjem gradnikov v jeziku C in novim modelom diskretnega časa (Extending automatic modeling of SDL specifications in Promela with embedded C code and a new model of discrete time)

10439702 Dr. Zmago Brezočnik Mirko ZADRAVEC Jun. 2nd, 2006

Metode Delaunayeve triangulacije, skoraj neodvisne od porazdelitve vhodnih točk (Dealunay triangulation methods almost independent on point dustribution)

10515990 Dr. Borut Žalik


RESEARCH BY INSTITUTES AND LABORATORIES

The Faculty of Electrical Engineering and Computer Science is registered with the Ministry of Science and Technology as a research organisation incorporating 14 research units.

1. Computer Architecture and Languages Laboratory

Research unit head: Prof. Dr. Viljem Žumer

The research unit consists of the Computer Architecture and Languages Laboratory and the Heterogeneous Computer Systems Laboratory staff.

2. Institute of Electronics

Research unit head: Prof. Dr. Bogomir Horvat

The research unit consists of the staffs of the Digital and Information Systems Laboratory, Electronic Systems Laboratory, Microcomputer Systems Laboratory, and Digital Signal Processing Laboratory.

3. Institute of Automation

Research unit head: Assoc. Prof. Dr. Denis Đonlagić

The research unit consists of the staffs of the Systems and Control Laboratory, Signal Processing and Remote Control Laboratory, Process Automation Laboratory, Measurements Laboratory, and Electro-Optical and Sensory Systems Laboratory.

4. Institute of Robotics

Research unit head: Prof. Dr. Karel Jezernik

The research unit consists of the staffs of the Power Electronics Laboratory, Industrial Robotics Laboratory, and Kinematics and Simulations Laboratory.

5. Applied Electromagnetics

Research unit head: Prof. Dr. Mladen Trlep

The research unit consists of the staffs of the Applied Electromagnetics Laboratory and Fundamentals and Theory of Electrotechnics Laboratory.

6. Electrical Machines Laboratory

Research unit head: Prof. Dr. Ivan Zagradišnik

The research unit consists of the Electrical Machines Laboratory staff.


7. Electromechanical Systems Control Laboratory

Research unit head: Prof. Dr. Drago Dolinar

The research unit consists of the Electromechanical Systems Control Laboratory staff.

8. Computer Graphics and Artificial Intelligence Laboratory

Research unit head: Prof. Dr. Nikola Guid

The research unit consists of the Computer Graphics and Artificial Intelligence Laboratory staff.

9. Institute of Information Science

Research unit head: Prof. Dr. Ivan Rozman

The research unit consists of the staffs of the Information Systems Laboratory, Database Technologies Laboratory, Computer Mediated Communication Laboratory, and Real-Time Systems Laboratory.

10. Systems Software Laboratory

Research unit head: Prof. Dr. Damjan Zazula

The research unit consists of the System Software Laboratory staff.

11. Power Engineering Laboratory

Research unit head: Prof. Dr. Jože Voršič

The research unit consists of the Power Engineering Laboratory staff.

12. Institute of Mathematics and Physics

Research unit head: Prof. Dr. Vitodrag Kumperščak

The research unit consists of the Applied Mathematics Laboratory staff.

13. System Design Laboratory

Research unit head: Prof. Dr. Peter Kokol

The research unit consists of the System Design Laboratory staff.

14. Geometric Modelling and Multimedia Algorithms Laboratory

Research unit head: Prof. Dr. Borut Žalik

The research unit consists of the Geometric Modelling and Multimedia Algorithms Laboratory staff.


PROGRAMME UNITS

Seven programme units exist at the Faculty of Electrical Engineering and Computer Science, which are registered with the Slovene Research Agency. The work in these programme units represents the basics of fundamental research at our faculty, as they include the majority of our researchers. The quality of programme units is examined every year. A condensed overview for 2006 is collated in the sequel.

1. Telematic

Programme unit head: Prof. Dr. Žarko Čučej

This programme unit consists of the staff of the Signal Processing and Remote Control Laboratory, Systems and Control Laboratory and Digital and Information Systems Laboratory.

Scientific disciplines: Computer Science, Informatics, Metrology, Systems, Telecommunication Engineering.

Telematics -- synergy of telecommunication and information -- is a foundation of modern information society. It enables services, which are changing the paradigm of personal life, industry and connection to the world. Our activities in recent year have focused on two area, signal processing remote sensing application, and wireless sensors network. In the first area we have developed a novel algorithm for de-noising SAR images. This algorithm is based on Bayes method in the wavelet domain. In the second area we have developed new models for the calculation of signal propagation which enable better characterisation of transmission channels in personal area networks used for medical data telemetry.

2. Control of electromechanical systems

Programme unit head: Prof. Dr. Drago Dolinar

This programme unit consists of the staff of the Electromechanical Systems Control Laboratory and Power Engineering Laboratory.

Scientific disciplines: Automation, Electrical Engineering, Electromagnetism, Mathematical and General Theoretical Physics.

The research programme "Control of Electromechanical Systems" consist of two parts. The first part deals with the modelling, analysis and control design of electromagnetic devices or systems (induction machine - IM, synchronous machine, reluctance machine, linear and rotating machines, servo drives and active magnetic bearings), while the second part discusses the design, modelling, analysis and control of power systems. Both parts are combined into one unit by applied dynamic treatment, which represents the basis for control design in the broadest sense. Within the framework of the first part, the research team analyzed various approaches to the dynamic modelling of electromagnetic devices and complex technical systems (analytical models).


A new concept for IM torque control was developed based on its non-holonomic structure. Characteristic non-holonomic constraints were derived for AM dictate rotating stator current vector and rotor flux linkage vector to reach and to maintain any feasible equilibrium point. To achieve maximal efficiency in the transient and in the steady-states, adjusted amplitude and frequency modulation of the stator current must additionally be assured. Required modulation was assured by a state controller derived from the Brockett’s controller proposed for a class of non-holonomic systems without drift. The proposed torque control assures high dynamic in torque response, asymptotic stability and maximal efficiency under all feasible operation conditions. The new part of the research was the analysis and modelling of a three-phase core type power transformer. Within the framework of the second part, the research team performed the dynamic modelling and analysis of a power system's elements and the power system as a whole. Again, the dynamic approach was used. Part of the project was related to the detection, location and classification of faults in the distribution networks. Several methods for fast and accurate estimation of loop parameters were derived. In contrast to methods that are based on signal approximation with the series of orthogonal base functions. The proposed methods are much less sensitive with respect to DC component, higher-, sub- and inter-harmonics, as well as with respect to the measurement noise in the voltage and current signals. Developed methods that are verified with simulations are based on deterministic and stochastic line models in differential and integral time discrete forms.

3. Mechatronics systems

Programme unit head: Prof. Dr. Karel Jezernik

This programme unit consists of the staff of the Industrial Robotics Laboratory, Power Electronics Laboratory, Electro-Optics and Sensor Systems Laboratory, Measurements Laboratory and Process Automation Laboratory.

Scientific disciplines: Automation, Intelligent Systems, Motors and Propulsion Systems, Robotics, Systems.

Mechatronics and robotics are topical scientific and industrial activities in most developed states worldwide. The development of mechatronics systems presents a guarantee of development, technological progress and, thus, overall societal progress in both developed and underdeveloped countries. With the use of information and communication technologies presents a prime contribution to the development of new mechatronic products, an improved competitive position for national economies, and also to the reduction of energy consumption. All over the world enormous effort is being made in the fields of controlled drives, electronic voltage inverters, embedded systems, and telerobotic applications connected with virtual environments for technological solutions' demands, from macro- to nano- world. Likewise advance in the field of the optical MEMS sensors and measurement instrumentation interferes with the most topical and promising fields of science, like nano-, optical and sensor technologies and their combinations, and takes care of the transfer of these technologies into practical use. Observed from the viewpoint of the technological progress of Slovenia, research in the field of mechatronic systems is of vital interest, as the development of state-of-the-art products cannot be


imagined without them. In order to assure their proper introduction into industrial practice it is essential to support high-quality centres of research, which have to serve as a support for the industry. Mechatronic systems present one of the most important export group of articles for Slovenia (Domel, Iskra Rotomatika, Iskra Mehanizmi, Kolektor, Motoman Robotec, Iskra Avtoelektrika, IPS Ljubljana,…). However, most of these products are on a low technological level, which is reflected in the low added-value. Thus, over the next years, they have had to be upgraded or replaced with more advanced ones. In order to be able to reach a higher living standard, technological direction of our industry will have to change, where results of project team's research will play an important part. Projects assure to our companies any access to knowledge and tools, required for their progress. Thus, it influences their technological advance and enables growth in the number of innovations, which results in the growing added-value of products. The project team contributes to a growing level of knowledge in the areas it covers. All of the research topics of our programme group are of exceptional importance for the global progress of science, which can be shown by the great number of publications in relevant international literature. The use of mechatronic approaches presents an important stimulation in the growth of the number of innovations and occurrences of many new products, which can also present novelties in the global market. Thus, Slovenia receives the chance to take its place among the most advanced countries of the world in a relatively short time. Research in the fields of controlled drives, electronic voltage inverters and embedded systems presents an important contribution to the improved competitive position of our companies. The improved quality of control also means a reduced use of energy, which results in reduced pollution of the environment and, thus, the preservation of natural and cultural heritage. Electromechanical drives belong among the most important consumers of energy and already a small improvement in their efficiency has resulted in a notable reduction in energy consumption on the national scale. The programme in the field of optical MEMS sensors and measurement instrumentation reaches into the most important and interesting areas of science, such as nano, optical and sensoric technologies, together with their combinations, transferring technologies into practical use. The results of research in the field of fiber-optic mode filters will enable singlemode connections with the use of fibres, which would enable multimode operation. In the area of fibre-optic sensors the main issue of our research is FP interferometers and low-cost sensors on the basis of plastic fibres. We successfully produce various prototypes of sensors. Studies into the possibilities of modified modulation techniques, where the modulation signals are deliberately contaminated by noise, microcomputer units and inverters of all kinds present a global contribution to this progress. Microcomputers are currently not applied in DC-DC converters at the local level. Complex control algorithms, where we have to deal with nonlinear objects of control, are executed in special integrated circuits. Their replacement with the standardized microcomputer units will accelerate progress in this field. Efficient use of energy is gaining significance. In this area the activities of the research group are directed towards the development of components and procedures for efficient energy transfer and conversion, more specific into the development of converters for renewable energy sources, and the implementation of digital algorithms for the control of simple DC-DC converters. For this


purpose, a required infrastructure was built, consisting of electronic components and corresponding software for the implementation of non-linear control algorithms on FPGA circuits. The field of research was extended to the use of alternative energy sources. An experimental system with the PEM fuel cell was built for this purpose. It includes a 1.2 kW Ballard NEXA fuel cell with the corresponding control and supervision system, connected to the hydrogen reservoir. Activities in this area are focused on the development of suitable converter structures, which will enable a continuous power supply for the optional AC or DC load. Converters will be connected into the system, where all energy flows will be controlled. This research presents a contribution to the development strategies of Slovenian companies, which is directed towards positioning on international markets as the provider of advanced high-tech solutions for mobile electric propulsion systems and actuators using fuel cells, but also other energy sources. Research in the field of control drives presents one of the most important research topics in the whole technical domain. The importance of this topic is further increased due to the global trend of replacing hydraulic and pneumatic actuators with electromagnetic ones, which are not only easier to control, but also cheaper and consume less energy. Improved quality and reliability of electromechanical actuators’ control also presents progress in many areas where they are used as drives. Better control (constant torque, less vibrations, improved dynamics …) enables the production of improved systems. In the field of AC drives’ control without the use of speed and position sensors, currently research into very low speed, field weakening, regenerative and optimal operations represents the most important topic. The importance of this area is represented by the large number of research groups in the best universities and institutes worldwide, dealing with problematics. Research in the control of electrical drives is focused on applications in the automotive industry, where the reliable and energy-efficient operation of drives in a key issue. Research efforts in the area of event systems are connected with a variety of technological fields, however, a significant contribution is related to the development of new production technologies. Rapid and efficient response to the changing demands of the markets can be assured with the introduction of advanced production procedures such as "product on demand" and "custom product". This can only be achieved with flexible and reconfigurable production, which enables simple and cheap changing of existing, and the introduction of new products. Contemporary automatization approaches have to combine the adaptability of low-series production technologies with the efficiency of high-series production lines, which cannot be imagined without the use of mechatronic systems. Over the last decade, systems of automation, control and supervision, based in PC architecture, have become state-of-the-art, especially in the field of SCADA systems. On the other hand, closed and hardware based solutions are still dominating the field of CNC systems, although open solutions using the PC are emerging. The prime interest of research into these technologies is the introduction of open standards for embedded and specialized systems of distributed hardware and software. This is due to the fact that they enable upgrading, extending and interoperability. Additionally, open architecture shortens the design cycles, increases productivity, and reduces production times interruptions, and the cost of maintenance. Research in the field of advanced control of systems is focused on the development of modern algorithms for the real-time control of non-linear systems. Possibilities for application of different control methods for non-linear processes, where some of the process states are not measurable,


are under investigation. Non-linear reduced and full order observers are applied for this purpose. In the field of error recognition, isolation and diagnostics mathematical-statistical methods are introduced for the on-line operation. In the area of modelling hydraulic processes new approaches are applied, based on models of industrial hydraulic components (regulation valve, vessel, pump, pipeline). Models are designed for the simulation, testing and synthesis of control algorithms, detection and suppression of faults, as well as supervision and similar applications. In the field of embedded systems in welding technology, the possibilities of on-line quality control during the operation are investigated. Teleoperating, and especially its branch telerobotics, is a new and rapidly developing interdisciplinary domain of robotics, remote control, virtual reality, and human-machine communications. Many important laboratories worldwide put a lot of effort into the development of experimental teleoperation using intelligent virtual interface, especially for applications in macro (telerobotics hand for the execution of remote medical operations), micro (robots for moving objects, smaller than 1 mm), and nano (robots for cutting molecules) worlds. Research in the field of teleoperation is focused on the execution of a remote-control robotic arm and mobile robot, where unpredictable delays of data transfer through the Internet have to be taken into account, which is a current topic of research worldwide. For the purposes of remote measurement monitoring, data acquisition drivers and user interfaces are developed using LabVIEW software. The LabVIEW application enables monitoring of the measurements and modification of those parameters needed for the testing of various elements and instruments under different conditions. The measurement monitoring and parameter changes are performed remotely via the Internet. Server application sends the table of active cameras with corresponding URLs (Uniform Resource Locator) and experiment titles to the client application. Camera list and JPEG-compressed image data are sent over the Internet by using LabVIEW shared variable. Research into noise pollution in various environments such as workplace and residential environments or environments with high-intensity machine-created sounds is carried out. An overview of noise pollution standards was made and theoretical background was researched. In addition, experimental measurements were performed. Comprehensive research into potential hazards of the non-ionizing radiation of radio communication devices is conducted. A benchmark study between the EU and NATO was carried out. Both urban and rural areas are included in the research. Its results are used by rescue teams and people working or living near such devices. Research in the area of kinematics and simulations is conduced in the direction of a formal description of gyroscopic devices' operation, modelling techniques with simulation results as illustration and presentation of experimental results, followed by their evaluation. In this work, cooperation takes place with the Institute of mathematics and physics at our faculty. The main contribution is the development of a dynamic model, describing the operation of the device in all three possible operations: free flywheel and both cases of the rolling connection between the flywheel axes and device casing. Robotic control is also investigated, restricted to the heuristic approach and use of a torque sensor on the single degree of freedom.


4. Advanced methods of interaction in telecommunication

Programme unit head: Prof. Dr. Zdravko Kačič

This programme unit consists of the staff of the Microcomputer Systems Laboratory, Digital Signal Processing Laboratory, Electronic Systems Laboratory and Digital and Information Systems Laboratory.

Scientific disciplines: Signal Processing, Telecommunication Engineering.

In 2006 research work was carried out in two main research areas. The first one encompassed advanced multimodal communications, where the following developments were carried out: large vocabulary speech recognition, language modelling, fast search algorithms for continuous speech recognition, and image segmentation algorithms. One of the goals of the research in the area of system-correctness assurance was the development of new methods for formal or semiformal specification and verification of contemporary reactive systems. In the field of digital speech, processing development of novel pitch-period and pitch frequency estimation algorithms has been carried out. The pitch-period, as well as fundamental speech frequency, are important parameters in modern text-to-speech synthesis algorithms, as well as in other pitch-synchronous speech signal analysis procedures. In order to establish an evaluation framework, a hand-labelled, pitch-marked speech database has been developed together with a complete evaluation toolkit. The acoustic modelling approach and speaker adaptation for Slovenian viseme recognition was developed. The viseme acoustic models were included in the multimodal virtual agent Maja, which was presented at the Hevreka fair. Two new Slovenian language resources were built: the Slovenian parliamentary speech database SloParl and the Slovenian non-native speech database SINOD. At the same time, the amount of speech material in the Slovenian BNSI Broadcast News database was doubled. A new grapheme acoustic modelling approach was proposed, where graphemes were built directly from phoneme acoustic models. The baseline Slovenian Broadcast News continuous speech recognition system was developed. Acoustic models for the Babilon speech-to-speech translation system were built. A voice driven auto attendant system was set-up as a telephone service pilot project. In continuous speech recognition the work was primarily oriented towards search algorithms. The first version of large vocabulary continuous speech recognition system for the Slovenian language was presented and evaluated on the Slovenian Broadcast News BNSI speech database. With a new search algorithm developed especially for Slavic languages, recognition accuracy increased byr 15% relatively. In the second part, we extended the confidence measure algorithm on connected word speech recognition systems. With this increase, robustness in IVR (interactive voice response) systems was achieved. Language modelling was focused on Broadcast news domain. Two language models were built, with vocabularys of 20k and 60k words, respectively. Both were weighted interpolations of three models: one model of written language and two models of spoken language. Statistical machine translation was oriented towards searching for an optimal token to be used in the translation model, depending of the sparseness of training corpus.


In the year 2006, basic research for developing speech-to-speech translation components continued. One of the biggest problems in developing speech-to-speech translation technology are spontaneous speech characteristics, such as disfluencies, self-repairs, false starts, hesitations, ellipsis etc. The aim of the research was to find possible solutions for this problem, based on new corpus attributes. Two types of such attributes were defined as a result of the research: discourse markers and self-repairs. One of the goals of the programme part on system correctness assurance is the development of new methods and computer-aided tools for formal specification and verification of contemporary reactive systems. In 2006, development of the sdl2pml tool for automatic generation of models in the Promela language from a system specification written in language SDL was finished. At the end, a mechanism for the abstraction of external operators and for their automatic inclusion in the system model was developed and implemented. The correctness of the tool functioning was checked by creating a Promela model from an SDL specification of a real SDL specification. The specification has been developed at the Iskratel d.o.o. company and is integrated into a modern telephone exchange from the SI3000 family. A model of the IUA protocol was successfully created and used as an input to the Spin verification tool. Simulation and formal verification were the next working phases. The complexity of the model set out numerous challenges for future research work. Verification capabilities of a commercial SDL-based software package were studied. The capabilities of the SDL language for specification of dynamic process linking were tested and found insufficient. The development of the group's own verification tool EST (Efficient Symbolic Tools) was carried on. The EST project was registered with The Free Software Foundation (FSF) (http://savannah.nongnu.org/projects/est/), which gives the group the possibility of collaboration with researchers all over the world.

5. Information systems

Programme unit head: Prof. Dr. Ivan Rozman

This programme unit consists of the staff of the Information Systems Laboratory, Database Technologies Laboratory, Computer Mediated Communication Laboratory and Real-Time Systems Laboratory.

Scientific disciplines: Business Process Reengineering, Communication Methods, Computer Science, Databases, Development Methodologies, E-business, Informatics, Information System Development, Intelligent Systems, Operations Research, Quality Assurance Systems, Real-Time Systems.

The group's scientific and research work is orientated towards the holistic development of information systems (IS). It addresses several inter-connected areas: methodological aspects of IS, databases and data warehouses development; quality assurance strategies; information technology support for inter-organisational business operations; design and construction of embedded systems; reliability assurance and security of embedded systems; evaluation and improvement of process and architecture models; IS integration methods; use of intelligent systems, agents and automatic programming techniques for the IS reliability improvement;


security aspects of IS development; data and databases security; efficiency of classification algorithms for the construction of data warehouses and integration initiation for information quality improvement. Methodological aspects of IS development address the development and definition of new, more effective techniques, methods and methodologies of business process modelling, requirements analysis, architecture design, implementation, verification and validation of IS. The emphasis is on the object- and component-oriented approach, and on the services-based architecture with the semantic component and context, and aspect-dependent behaviour. One of the key issues is assurance of information services integration, which also addresses the next key issue of efficiency improvement re-use, for which the formalization on the higher level of abstraction (ideas, patterns, frameworks, components and heuristics) is done by introducing various repositories, location, identification, and the application of solution mechanisms. Methodological research offers a sound base for the methods' and mechanisms' definitions to support information technology in inter-organisational business operations, primarily between businesses, but also for customers and employees. The main goal is the construction of inter-organisational integration based on the existing standards of web services and the enhancement of web services by semantic component. The final goal is automatisation at all levels: definition of business processes, definition of cooperation profiles, electronic contracts definition and business operations execution. Attention is focused on the standards of the European Union, primarily SEEM (Single European Electronic Market), and on the definition of application methods in Slovenia. The security aspects orient towards quality assurance of IS development and assurance of data quality. The research group traditionally dedicates much attention to quality and continues with research on defining new approaches when introducing quality systems into the informatics sphere of activity, and on defining formal methods for program processes modelling. In this manner, research continues on the quantitative evaluation of program processes and data quality. Furthermore, the development of distributed-services' architectures is focused on which are independent of platform and/or transformation mechanisms; in this context the model-based architectures definition possibilities are addressed, thus solving the problem of heterogeneous application platforms and their fast development. Within the scope of IS data aspects research (databases, data warehouses and data mining), preference is given to information production processes and their improvement by the consideration of structured data development and analysis procedure at the level of an organized system. In the scope of knowledge-based systems research, focus continues on the development of models for effective project management support, definition and evaluation of methods based on fuzzy logic, intelligent agents, operations research and artificial intelligence. The development searches for sources in the semantic enhancement of services' architectures and implementation of artificial intelligence methods.

6. Applied Electromagnetics

Programme unit head: Prof. Dr. Mladen Trlep


This programme unit consists of the staff of the Fundamentals and Theory of Electrotechnics Laboratory, Applied Electromagnetics Laboratory and Electrical Machines Laboratory.

Scientific disciplines: Electrical Engineering, Electromagnetism.

The research programme “Applied Electromagnetics” is a combination of three areas, which are interactively connected and all three are learned from a unified theoretical origin, which is based on the macroscopic theory of the electromagnetic field, mathematically determined by Maxwell’s equations. Because of their specifics, the areas are treated in parallel within the framework of the programme, but the final aim is to combine all of this knowledge into one complex system, which will cover, as much as possible, all the demands of real direct or inverse electromagnetic problems. The first part focuses on the research and development of real mathematical models for the determination of magnetic, electric and heat fields under the conditions of stationary and dynamic working of electric, electromagnetic or electro mechanic systems or devices. For the mathematical solving of these very complex problems, we chose the finite element and boundary element methods. In the year 2006 we intensely researched the field of electric machines. Study was carried out on the electronically commutated motor with permanent magnets regarding different possibilities for the reduction of undesirable oscillations of the rotational torque, with emphasis on analyses of the engine geometry, and on the method of engine supply, with the inclusion of a 3D transient numerical model. In this regard a study, and the development of a magnetic two axis model of the synchronous motor containing permanent magnets with outside rotor and research work into a Flux-reversal (FR) electric engine with permanent magnetis, were carried out. The influence of the electromagnetic field on the environment, particularly its influence on people and on different electric devices is becoming a more and more important research area. Last year we developed a model, which considers the influence of objects within the surroundings of long-distance transmission lines, on the distribution of electromagnetic field. This step is very important by the development of a complete model because, in this way, we can come nearer to the real conditions, because only real conditions make it possible to actually estimate the field's influence on the surroundings. Knowledge of real material properties is very important for the solving of field problems using numerical methods. The development of measuring methods points towards measuring methods for accurately determining the real material characteristics and accurately determining losses in the materials, which is needed for a complete mathematical model of the electromagnetic system, as far as possible. Over the last year we have investigated, in the rotational single sheet tester, the interaction of the magnetic field between lamellas of both the high and classic-oriented sheets. The third part of the research programme focuses on the development of models which are useful by the solving of inverse problems in electrotechnics. Last year we continue with the development of an experimental 3D model, which will make possible evaluation of the inverse problem-developed numerical model, and the evaluation of the programme solution's quality.


7. Computer systems, methodologies and intelligent services

Programme unit head: Prof. Dr. Damjan Zazula

This programme unit consists of the staff of the Computer Architecture and Languages Laboratory, System Software Laboratory, Heterogeneous Computer Systems Laboratory, Geometric Modelling and Multimedia Algorithms Laboratory and Computer Graphics, Artificial Intelligence Laboratory and Programming methodology laboratory.

Scientific disciplines: Artificial Intelligence, Bioinformatics, Biomathematics, Computer Graphics, Computer Science, Computer-Assisted Education, Distributed Computing, Geometrical Modelling, Image Processing, Intelligent Systems, Internet Programming and Web Services, Medical Informatics, Multimedia, Programming Languages and Computer Architectures, Signal Processing, System Information Theory, Systems Engineering, Systems Engineering and Computer Technology.

1. Intelligent web services The group for intelligent web services has been supported by a programme founded in 2004. Over the last year, we have advanced the intelligent services developed during previous years. A new service with an application of computer chess called BBChess was combined with the existing services for intelligent image segmentation, the LISA generator of compilers, generation of fractal noises, and compression of voxel data. These services were improved by being upgraded with machine learning capabilities. The user’s behaviour and mode of interaction were monitored and, afterwards, considered in an automated personalized, flexible, and friendly adaptation of the service operation. 2. Scientific research In the field of programming languages theory, we continued our research into grammatical inference and domain-specific languages. New heuristic algorithms for grammatical inference were developed and integration with evolutionary algorithms was investigated. The comparison of different implementation approaches for domain-specific languages was performed. Moreover, a new framework for the automatic generation of domain-specific language debuggers was proposed. Within the field of language theory, we developed an experimental object oriented programming language. This language is statically typed with a pure object model where all entities are represented as objects. The state of the objects is defined and modified exclusively through methods which purify the object model even further. The dynamic nature of runtime objects is reflected solely through methods which are capable of modification at runtime. Updating methods at runtime is safe and sound. In the field of evolutionary algorithms, we have developed a self-adaptive differential evolution algorithm. The idea of differential evolution was also applied to our BBChess computer chess program, which we had previously developed. In the field of curve and surface modelling, we developed the SURFMOD teaching tool that implements the most important parametric construction methods. This tool enables comparison of selected methods using the same data, so that the methods are displayed simultaneously. The method quality is inspected using numerous implemented tools. We also developed the FlattGen


tool which incorporates the commonest methods for surface flattening into a plane. Teaching of methods is based on their mutual comparison. We introduced a new efficient algorithm for the reconstruction of nonintersecting 3D curves from a sufficiently dense sample, using Euclidean minimal-spanning trees. Previously developed novel approaches to signal and image processing were implemented in different applications. In particular, we focused on the CKC method, which has been used for the decomposition of dynamic surfaces’ EMGs and sphincter signals, whereas, we also used the decomposition results for assessing the muscle contraction forces. We improved our algorithm for image segmentation based on the registration of edge regions. Such a solution optimally connects the edges into the object’s contours. An upgrade was also made to the ultrasound image processing approach which we had developed with cellular neural networks; we improved its learning phase by support vector machines. Additionally, we developed a haptic-aided system which segments a sequence of images and reconstructs 3D objects in order to build a virtual environment suitable for haptic scan with tactile feedback. We continued researching in the field of geometric data compression, mainly focusing on the topology compression of meshes aimed at finite element method (FEM) analyses. We studied, developed, and optimized methods for mutliresolution compression, simplification, transmission and visualization of large sets of triangles, quadrilaterals, blocks and prisms. We dealt with compression and visualization of voxel data, and with surface reconstruction from a cloud of points, too. We also presented a Delaunay triangulation algorithm which is, owing to the use of alternative data structures, almost independent of the input point distribution. In addition, we developed efficient solutions for the closest point problem, for the sweep-line-based constrained Delaunay triangulation, and for an adaptive sort of geometric data.

Institute of Automation AU - 1

INSTITUTE OF AUTOMATION

Head:

Assoc. Prof. Dr. Boris Tovornik

Phone: +386 2 220 71 60

E-mail: [email protected]

URL: http://www.au.feri.uni-mb.si/

The Institute of Automation participates in basic and applied research in the fields of electrical and high-precision measurement of electrical and non electrical quantities, measurement automation, signal processing, and remote control, sensor systems, systems theory and control, modelling, identification, computer control of processes, system design in automation, software in automation, expert systems in automation, fuzzy control systems, human-machine communication, electro-optic systems, programmable logic control systems, and real time control systems.

The Institute of Automation co-operates with many institutes abroad: Technische Universität Graz - Austria, Technische Universität Wien - Austria, Fachhochschule München, Technische Univerersität München - Germany, Deutsche Forschungsanstalt für Luft- und Raumfahrt Oberpfaffenhofen - Germany, Faculty of Electrical Engineeting, Zagreb - Croatia, Faculty of Natural Sciences, Mathematics and Education, University of Split, Technical University of Sofia - Branch Plovdiv, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, Faculty of Chemical Engineering and Technology, University of Zagreb, Slovak University of Technology in Bratislava, Faculty of Electrical Engineering and Communication, Brno University of Technology,Czech Technical University Prague

AU - 2 Institute of Automation

The members of the Institute of Automation belong to five laboratories, which also includes one centre of technology.

Systems Control Laboratory

Head: Assoc. Prof. Dr. Rajko Svečko

Signal Processing and Remote Control

Laboratory Head:

Prof. Dr. Žarko Čučej

Process Automation Laboratory

Head: Assoc. Prof. Dr. Boris Tovornik

Measurements Laboratory Acting Head:

Assoc. Prof. Dr. Vojko Matko

Electro-Optics and Sensor

Systems Laboratory Head:

Assoc. Prof. Dr. Denis Đonlagić

Institute of Automation Head:


Institute of Automation AU - 3

Systems Control Laboratory

Head: Assoc. Prof. Dr. Rajko Svečko

Employees: Assoc. Prof. Dr. Matjaž Debevc; Andrej Knuplež; Sarjaš Andrej, Primož Kosec; Hohnjec Živana

Part-time employed: Dr. Amor Chowdhury, Zdenko Mezgec, MSc

Signal Processing and Remote Control Laboratory

Head: Prof. Dr. Žarko Čučej

Employees: Asst. Prof. Dr. Peter Planinšič; Asst. Prof. Dr. Dušan Gleich; Asst. Prof. Dr. Jože Mohorko;Tomaž Romih, MSc; Karl Benkič; Marko Hebar; Matjaž Fras; Marko Malajner;

Process Automation Laboratory

Head: Assoc. Prof. Dr. Boris Tovornik

Employees: Asst. Prof. Dr. Nenad Muškinja; Asst. Prof. Dr. Marjan Golob; Božidar Bratina; Alojz Hojnik

Part-time employed: Aleksander Polutnik, MSc

Measurements Laboratory

Acting Head: Assoc. Prof. Dr. Vojko Matko

Employees: Asst. Prof. Dr. Bojan Gergič; Ladislav Mikola, MSc; Darko Hercog; Barbara Brezovec;Stanislav Lampič; Miloš Vute

Electro-Optics and Sensor Systems Laboratory

Head: Assoc. Prof. Dr. Denis Đonlagić

Employees: Dr. Edvard Cibula; Marko Kežmah; Linec Matjaž; Domen Golob; Silvija Buzeti;

AU - 4 Systems and Control Laboratory

SYSTEMS AND CONTROL LABORATORY

Head:

Rajko Svečko

Phone: +386 2 220 7140


RESEARCH PROJECTS

Current research projects

Applied projects

101-Poglej in preveri

Poglej in preveri (Look and Check)

Leader: Rajko Svečko (Faculty of Electrical Engineering and Computer Science)

Participants: Andrej Knuplež, Matjaž Debevc Project partners: Osnovna šola Angela Besednjaka, Maribor

Financed by: OŠ Maksa Durjave

The project Look and Check, accompanied by the educational communication technology (IKT) is used to provide the most suitable access to those databases which are linked with educational work, to give all the help that is needed to students who might want it or need it according to their own will or to the will of their parents.

Teachers who work at this project have to moderate data bases for each subject, separately. These data bases include the information about the summary of the lesson, knowledge control, marking criteria and many others. All the information about Look and Check project is published regularly. Besides this, we also try to answer all the user’s questions. This project is run according to the method of active development and exploration.

Systems and Control Laboratory AU - 5

International projects

101-IS/04/B/F/PP-164002

LEONARDO da VINCI, project: SOCIAL RETURN

Leader: Soffia Gisladottir (FELAGS) Participants: Rajko Svečko, Živa Hohnjec, Tanja Kocjan-Stjepanović, Matjaž

Debevc

The main goal of this innovative pilot-project called “Social Return” is to develop a holistic and multi-disciplined rehabilitation programme and to offer this to disabled individuals with limited employment capability. The programme should preferably be carried out in the participant´s local or regional area. Pilots will be set up in Húsavík (a remote and sparsely populated area in N.E. Iceland), in South Limburg (a densely populated but partially rural region in The Netherlands), in Vilnius, the capital of Lithuania, in the Firenze region of Italy, and in the region of Maribor in Slovenia.

This project will straightforwardly enhance the implementation of equal opportunities for disadvantaged people, by applying a holistic, multi-disciplinary approach, customized to the needs of the individual in small scale settings at local levels. People will not be temporarily pulled away from their community and families, as is the case in many of the existing large rehabilitation centres.

29298-IC-1-2003-1-AT-ERASMUS-PROGUC-1

SOCRATES ERASMUS Project MARE – Joint European Master Degree Programme »Remote Engineering«

Leader: Michael Auer (Carinthia Tech Institute) Participants: Prof. Dr. Riko Šafarič, Rajko Svečko, Živa Hohnjec, Matjaž Debevc,

Andrej Knuplež

Financed by: European Union

The main task of the project MARE is to elaborate a complete new joint curriculum in the field of »Remote Engineering«. The program is planned as a joint master's degree programme.

The use of virtual and remote laboratories and workplaces is one of the future directions for advanced teleworking / e-working environments, especially in engineering and science but also in all other areas of society. This would also provide a benefit for people with special needs and people working from their homes.

All over the world there is a lack of specialists in this field and the number of needed specialists will increase dramatically over future years.

The general objective of the curriculum is to mediate fundamentals, applications and experiences in the field of remote engineering by an interdisciplinary approach in combination


with »learning by doing« phases. In this way we will create in Europe unique possibilities to study »Remote Engineering«.

Technology enhanced learning in a dual mode will be the central didactic approach.

This study program is open to students from all over and outside Europe and requires a bachelor degree in engineering or in the science of informatics.

Graduates will be able to work in remote working environments and to develop such environments.

This project represents an important contribution to the information Society Policies (Lisbon Agenda) and the eEurope Action.

101-2611-04-0312104

EQUAL project: EQUAL STUDY

Leader: Jana Macarol (Univerza v Ljubljani) Participants: Matjaž Debevc, Živa Hohnjec, Primož Kosec

Equal study partnership has three main goals:

a) Goal – to establish better conditions in education for the disabled and, thus, better conditions for entering the labour market

b) Goal – to raise the educational level of the young disabled population

c) Goal – to lower the level of unemployment within the disabled population.

Between measures for reducting structural disparity in the field of unemployment, the National programme for the development of labour market also quotes the establishment of quality education for disabled students, which will lead to a reduction in school dropouts from university programmes. Social integration of marginal groups into the educational process and labour market is also very important. We intend to reach this goal through the establishment of adjusted study conditions and an establishment assistance department for students with special needs. In this content, we will develop multimedia support for lectures, mentoring network, career and study counselling, SOS telephone, and a draft of (international) employment network. These solutions would enable better conditions in education for the disabled and, consequently, better conditions for entering the labour market for all who have problems entering and re-entering it.

TEMPUS Cosucola (SM_SCM-C021A06-2006)

Computer-supported collaborative learning

Leader: Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Computer Science)


Participants: Živa Hohnjec, Matjaž Debevc, Asst. Prof. Dr. Peter Planinšič, Panagiotis Liatsis

Project partners: City University, School of Engineering and Mathematical Sciences, Faculty of Electrical Engineering, Ss. Cyril and Methodius University


Subject area: Education and teacher training.

This project focus concerns problems and needs in higher education, particularly shifting from professor-centered teaching to student-centered learning.

Main goal is modernisation of the educational system with new teaching methods. These methods will:

• engage and challenge students with the subject during class and drive them do develop explanations and discuss issues together;

• cause students to integrate the material into their experience;

• engage students in such a way that the energy for learning also emanates from the students themselves.

All these methods can be achieved with computer-supported collaborative learning. The benefit of multimedia in the computer-based collaborative learning project is two fold: Not only does it help students learn their subject matter better, but it also helps them develop IT skills.

Project objectives:

1) To establish a multimedia-based teaching environment (equipped multimedia classroom and retrain academic staff to use it)

2) To introduce the collaborative learning approach at UKIM and to develop and deliver DSP courses

3) To motivate other professors to change the traditional teaching methodology.

101-SLO-BIH 3/2006-2007

Interactive web pages with hyper video on demand in the area of e-education

Leader: Matjaž Debevc (Faculty of Electrical Engineering and Computer Science)

Participants: Primož Kosec, Dr. Dean Korošec, Tanja Kocjan-Stjepanović, Samra Mujačić

E-learning is gaining popularity and Bosnia and Herzegovina is aware of that, but still doesn't have a common development strategy, and e-learning is developing partially and independently. For that reason, an initiative from the University of Tuzla for developing joint e-learning material was very welcome. The university of Tuzla has already created an e-


learning centre.

Recently, there have also been visible solutions for realization of laboratory exercises over distance in real-time and with video control. Hyper video as an additional connection form of media within video is also becoming an attractive element of e-learning. In the project we will try to answer the following questions: duration length of the shot, quality of the shot, size of the shot, consumer satisfaction and others. Goals:

•Development of hyper-video learning materials for exercises in the area of digital systems and Human-computer interaction

•development of eLearning lecture in the area digital systems and Human-computer interaction

•education of pedagogical staff

101-INTERREG III INNOVIN

Participants: Matjaž B. Jurič, Matjaž Debevc, Aleš Frece, Andrej Hrnčič, Matjaž Košmerl, Darko Jerenič

The INNOVIN project aims towards the improvement and growth in the level of entrepreneurial culture, and the improvement of expert knowledge in the field of business in the academical environment, as well as towards increasing the number of spin-off and innovative enterprises in the cross-border regions. It binds the following cities: Graz, Villach, and Maribor as important economic centres and headquarters of university institutions. Within the framework of the project, establishing and improving the working of spin-off and innovative enterprises in the cross-border regions are stimulated with the help of events, services, and the promotion of business in the academical environment, as well as by cooperation with the local supporting institutions. Besides this, the project includes the development and creations of interactive applications for education, mentoring, market-specific information for the needs of spin-off enterprises. It also attends to building a cross-border network and data base for the needs of future founders of the spin-off enterprises, which are going to be formed by the universities innovators and partners in the fields of science, economy, and politics.

The goal-group are the future founders of enterprises from the academic environment and innovative enterprises from the cross-border regions of north-eastern Slovenia, Austrian Koroška, and Štajerska (Kärnten, Steiermark). The goal-group is also responsible for upcoming enterprises, stemming from the universities innovators, Science Park Graz, and the Tovarna podjemov (IRP), as well as all the potential founders of spin-off enterprises from the academic environment (academic institutions, university professors, scientific co-operators, students), and other innovative enterprises from the cross-border regions. The indirect goal-groups are the supporting institutions (technological centres, advisory organizations, regional development agencies, chambers of commerce and industry) in the cross-border regions and


in the EU, which can effectively use the contents of the web applications and the results of the project.

101-SLO-SCG 29/2006-2007

Implementation of a strategy for the development and use of e-learning in Serbia and Montenegro

Leader: Matjaž Debevc (Faculty of Electrical Engineering and Computer Science)

Participants: Primož Kosec

All around the world e-learning is gaining huge popularity, as in both Serbia and Montenegro. It is evident that e-learning in both, Serbia and Montenegro doesn't have a common development strategy, and is developing partialy and independently. For that reason, it would be very valuable to use results that Slovenian researchers have already acquired in e-learning strategy preparation, through various CRP projects, european projects and bilateral projects with Bosnia and Herzegovina, as a good starting point for the joint cooperation of slovenian researchers in developing e-learning strategy in both Serbia and Montenegro. Researchers and pedagogical staff from Serbia and Montenegro now need the professional support of slovenian researchers in order to prepare a solid base for e-learning strategy, instructions for the creation of e-learning teaching materials and providing strategy for efficient training and education about e-learning.

The particular goal, based on the previous experience of european institutions and also the University of Maribor, would be the creation of a University e-learning centre. Its role would be to provide pedagogical, technical, economical and legal support in developing e-learning. In this regard UM FERI has experience in the creation of Centre for distance education at the University of Maribor, and this would together increase the activity of the current centre, introducing new and state-of-the-art methods in supporting e-learning development. On the other hand the Technical faculty in Cacak has the necessary facilities and equipment for succesfull centre activities.

As the outcome of this project, innovative e-materials will be created that would commit to valid e-learning strandardization and would include directions for metadata usage according to IMS and SCORM specifications. Also, special project goal would be to conceive and establish possible joint research in the e-learning area and obtain more possibilities for the application of european projects.


Completed research projects 2006

International project

101-PHARE 2003 - DISNET

DISNET - E-learning network for unemployed persons with special needs

Leader: Melita Cimerman (Adragoški zavod Maribor - Ljudska univerza) Participants: Matjaž Debevc, Živa Hohnjec, Rajko Svečko, Andrej Knuplež, Asst.

Prof. Dr. Peter Planinšič, Prof. Dr. Žarko Čučej, Andrej Sarjaš


Duration: Dec. 2005 to Sept. 2006

The objective of the project was establishing an e-learning network for unemployed persons with special needs (deaf and hard of hearing, blind and weak-sighted) in Slovenia and establishing a Special Interest Group on Education, which is going to have an informative, presentational, and educational role. It is going to educate and train people with special needs for efficient inclusion into working environments which demand computer skills. The basic ICT training would end by the acquisition of an ECDL certificate. Educational institutions for people with special needs will thus enrich their offer by the performing of e-learning supported by tutors. Other objectives of the project were educating teachers for ICT work and presenting the opportunities e-learning offers to people with special needs. After the project's completion, the institutions would acquire the status of Support Centres with the possibility of distance learning with the aid of tutors and all the necessary equipment for preparing and designing instructional materials.


E-learning web portal user interface look (in the Slovene language only).

101-E-VINTER (71-751-03 0305 0004)

Phare 2003 - Creating an innovative learning environment, e-skill, and competence development, supporting the informal-lifelong-learning-form enforcement

Leader: Borka Jerman Blažič (Institut "Jozef Stefan"), Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science)

Participants: Asst. Prof. Dr. Suzana Uran; Živa Hohnjec; Jernej Otič; Matjaž Debevc; Jože Korelič; Janez Pogorelc, MSc

Project partners: Faculty of Electrical Engineering and Computer Science, Inštitut Jožef Stefan, SETCCE, Center RS za poklicno izobraževanje


Duration: Jan. 2005 to Dec. 2006

The E-VINTER project met its objectives with three concrete working packages:

1.Establishment of an Expert Centre for Evaluation, Standardisation and Counselling for the purposes of choosing optimal e-tools for the establishment of e-learning environments.

2.Development of e-skills and competences within the framework of preparating for the national vocational training qualification.

3.A pilot implementation of training through established innovative learning environments in the designated regions: the podravje, pomurje and koroška regions.


Part of the E-VINTER project was based on a pilot implementation of e-learning and training in established innovative learning environments of the designated regions: the Drava Region, the Mura Region, and Carinthia. For the e-education and training implementation of the targeted-groups of the three designated regions, the most appropriate tools, technologies, and e-education methods will continue to be used, as suggested by the Expert Centre.

Within the framework of the E-VINTER project, the following training was performed in the first half of 2006: 1. Microcontroller programming with the use of virtual laboratory, 2. E-business and 3. Robotics for every one.

SCM-C010A05-2005 - Tempus projekt

NEWEBTOOLS: Initiation of a Blended Learning System

Leader: Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Computer Science), Sofija Bogdanov (University of Ciril and Metod Skopje, Faculty of EE)

Participants: Vlado Kitanovski; Jean Ritzerfeld; Dimitar Trajkovski; Matjaž Debevc; Tomaž Romih, MSc; Asst. Prof. Dr. Peter Planinšič; Dr. Dušan Gleich; Karl Benkič

Project partners: University of Ciril and Metod Skopje, Faculty of EE


Duration: Oct. 2005 to Oct. 2006

The goal of the project was to improve the use of information-communication technologies at FYROM universities.

PUBLICATIONS

Danijela Milošević, Matjaž Debevc, Radojka Krneta, Mirjana Brković, “Building e-learning curriculum through analysis necessary competences,” Bul. ştiinţ. Univ. "Politehnica" Timiş., Ser. autom. calc., Vol. 65, No. 3, pp. 43-48, 2006.

Zoran Stjepanović, Matjaž Debevc, Tanja Kocjan-Stjepanovič, “Using video webcasting for educating deaf and hard of hearing people,” WSEAS transactions on advances in engineering education, Vol. 3, Iss. 2, pp. 162-168, 2006.

Alenka Adamič, Nataša Peer, Nives Brešar, Matjaž Debevc, Nives Kreuh, “Different teaching methods for supporting independent learning,” Interactive Mobile & computer aided learning (IMCL): first International conference on Interactive mobile and computer aided learning, Amman, Jordan, Apr. 2006.


Matjaž Debevc, Primož Kosec, “Pedagogical and didactical aspects of transformation from traditional learning content to electronic content,” New trends in engineering education, TEMPUS Project SCM C010A05 "Initiation of blended learning system", Ohrid, Macedonia, Sep. 2006.

Matjaž Debevc, Jul.ana Lapuh Bele, “Usability testing of e-learning materials for distance learning of unemloyed adults,” Lifelong and blended learning, Vienna, Austria, 2006.

Marjan Krašna, Tomaž Bratina, Matjaž Debevc, “Remote controlled videoconferencing and streaming video for education and science promotion,” International Symposium Remote Engineering Virtual Instrumentation, Maribor, Slovenia, Jun. 2006.

Zdenko Mezgec, Amor Chowdhury, Rajko Svečko, “Transmitting data through the GSM mobile phone voice channel,” IWSSIP 2006: proceedings of the 13th International Workshop on Systems, Signals and Image Processing [and] proceedings COST 292 special session Semantic Multimodal analysis of digital media, Budapest, Hungary, Sep. 2006, pp. 291-294.

Milan Rotovnik, Matjaž Debevc, “Daljinsko upravljanje mikrokrmilniškega omrežja v okolju LabVIEW,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006. Vol. B, pp. 389-390.

Rajko Svečko, Martin Pec, “Robust modelling of hard-disk drives servo system,” Proceedings of the 25th IASTED International Conference on Modelling, Identification, and Control, Lanzarote, Spain, Feb. 2006, pp. 225-230.

CONGRESSES, MEETINGS, AND COMMITTEES

Matjaž Debevc: 101-IEEE Education Society, meeting, implementation, UM-FERI, Slovenia, June 29, 2006.

GUESTS AND VISITORS

Michael Auer (Carinthia Tech Institute, Villach, Austria):

International IEEE Education Society Meeting

Lecture: Joint European Master Degree Programme "Remote Engineering", meeting participation, June 29, 2006.

Andreas Holzinger Pervasive e-Education supports Life-Long Learning:


(Institut of Medcal Informatics, Statistics and Dokumentation, Graz, Austria):

Practical Examples and Research Issues, visit, Aug. 28, 2006.

Signal Processing and Remote Control Laboratory AU - 15

SIGNAL PROCESSING AND REMOTE CONTROL LABORATORY

Head:

Prof. Dr. Žarko Čučej

Phone: +386 2 220 71 20


RESEARCH PROJECTS


Applied projects

M2-0140 Modeliranje informacijskih sistemov poveljevanja in kontrole (Modelling of commanding and supervising information systems)


Participants: Dr. Jože Mohorko, Asst. Prof. Dr. Matej Gomboši, Simon Vrečar Project partners: Gaudeamus

Financed by: Slovenian Research Agency, Ministry of Defence

The goal of the project is to create the basis for a Slovenian remote sensing centre. The accent will be on SAR-data compression, analysis, storage and transmission.

In the year 2006 the modelling was developed within the program ''Opnet''.

AU - 16 Signal Processing and Remote Control Laboratory

Research and development projects

M2-060 Znanje za varnost in mir: Slovenski center za daljinsko zazanavanje (Science for seccurity and peace: Slovenian Remote sensing Centre)


Participants: Prof. Dr. Žarko Čučej; Asst. Prof. Dr. Peter Planinšič; Dr. Dušan Gleich; Tomaž Romih, MSc

Project partners: Ministry of Defence

Financed by: Ministry of Defence, Ministry of Higher Education, Science and Technology of the Republic of Slovenia

In the year 2006 an overview of available optical and SAR-images was carried out. The de-noising of SAR-image data is study and development in the wavelet domain using Gauss and Gauss Markov-models. The segmentation and classification methods were studied and developed.

SAR-image of Maribor and its magnification.


Industrial projects

PMIC-06-07 Platforma ARM7 (Platforma ARM7)


Participants: Tomaž Romih, MSc; Marko Malajner; Karl Benkič Project partners: Metrel d.o.o.

Financed by: Metrel, d. o. o.

The goal of the project is to develope a tool for the systematic programming of measurement instruments applications in program language C for microcontrollers.

In the year 2006 a tool for the systematic programming of measurement instruments applications in program language C for microcontrollers was developed.


BI-RO/05-06/012 Information processing for multimedia and engineering data

Leader: Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Computer Science), Inge Gavat (Politechnica University oof Bucharest)

Participants: Gregor Domanjko; Daniela Faur; Rado Dobrescu; Stefan Mocanu; Mada Constantin; Jože Mohorko; Tomaž Romih, MSc; Mihael Kaiser; Asst. Prof. Dr. Mitja Solar; Dr. Dušan Gleich; Asst. Prof. Dr. Peter Planinšič; Mihail Datcu

Project partners: German Remote Sensing Data Center (DFD), German Aerospace Center (DLR) Oberpfaffenhofen, Romanian Space Agency, Politechnica University oof Bucharest

Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia

In the year 2006 an exchange of research results from both groups was established. After discussion during the two visits, in Maribor and Bucharest, future common research regarding image classification in both the image and wavelet domains using fractals, was planned.


TEMPUS Cosucola (SM_SCM-C021A06-2006)

Computer-supported collaborative learning


Participants: Živa Hohnjec, Matjaž Debevc, Asst. Prof. Dr. Peter Planinšič, Panagiotis Liatsis

Project partners: City University, School of Engineering and Mathematical Sciences, Faculty of Electrical Engineering, Ss. Cyril and Methodius University


Subject area: Education and teacher training.

This project's focus is on problems and needs in higher education, particularly shifting from professor-centered teaching to student-centered learning.

The main goal is modernisation of the educational system using new teaching methods. These methods will:

• engage and challenge students with the subject during class and drive them do develop explanations and discuss issues together;

• cause students to integrate the material into their experience;

• engage students in such a way that the energy for learning also emanates from the students themselves.

All these methods can be achieved with computer-supported collaborative learning. The benefit of multimedia in the computer-based collaborative learning project is two fold: Not only does it help students learn their subject matter better, but it also helps them develop IT skills.

Project objectives:

1) To establish a multimedia-based teaching environment (equipped multimedia classroom and retrained academic staff to use it)

2) To introduce the collaborative learning approach at UKIM and to develop and deliver DSP courses

3) To motivate other professors to change the traditional teaching methodology.

MPD-05-06 Monitoring physiological data by use of distributed inteligent sensors linked by wireless network

Leader: Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and


Computer Science), Nebojša Zdravkovič (University of Kragujevac; Faculty of Technical Science Čačak)

Participants: Jeroslav Živanić; Karl Benkič; Dr. Dušan Gleich; Radojka Krneta; Branka Jordović; Siniša Ranđić; Aleksander Peulić; Asst. Prof. Dr. Peter Planinšič; Tomaž Romih, MSc; Uroš Pešić

Project partners: University of Kragujevac; Faculty of Technical Science Čačak

Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia, Ministry of Science of Srbia

In the year 2006 the research and development was continued and publication of results was made.

116343-CP-1-2004-1-RO-Erasmus-TNPP

EUI-NET: European University-Industry network project

Leader: Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Computer Science), Sergiu Chiriacescu (University of Brasov)

Participants: Boris Bizjak, MSc; Matjaž Debevc; Dr. Dušan Gleich; Asst. Prof. Dr. Peter Planinšič; Tomaž Romih, MSc

Project partners: University of Brasov


The goal of the project is to improve education in European universities by method ''learning by doing'' within the framework of student practice in industry and its by evaluation with ECTS.

NGWSN-06-07 New generations of wireless networks

Leader: Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Computer Science), Siniša Ranđić (University of Kragujevac; Faculty of Technical Science Čačak)

Participants: Uroš Pešić; Asst. Prof. Dr. Peter Planinšič; Aleksander Peulić; Dr. Dušan Gleich; Karl Benkič; Tomaž Romih, MSc; Radojka Krneta

Project partners: University of Kragujevac; Faculty of Technical Science Čačak

Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia, Ministry of Science of Srbia

The goal of the project is to research and development a new generation of wireless networks. In the year 2006 state of the art in the research and development of wireless senzor network was carried out.


CZ/04/B/F/PP-168012

Elefants project: E-Learning for Acquiring New Types of Skills

Leader: Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Computer Science), Boris Šimak (Czech Technical University in Prague, Faculty of Electrical Engineering)

Participants: Tluchorova Lenka; Tomaž Romih, MSc; Asst. Prof. Dr. Peter Planinšič; Dr. Dušan Gleich; Matjaž Debevc; Rajko Svečko; Jaromir Hrad; Peter Hofman; Tomas Zeman

Project partners: Czech Technical University in Prague, Faculty of Electrical Engineering


In the year 2006 the development of electronic-learning tools was continued and preparing the materials for holding education lessons.



SCM-C010A05-2005 - Tempus projekt

NEWEBTOOLS: Initiation of the Blended Learning System

Leader: Prof. Dr. Žarko Čučej (Faculty of Electrical Engineering and Computer Science), Sofija Bogdanov (University of Ciril and Metod Skopje, Faculty of EE)

Participants: Vlado Kitanovski; Jean Ritzerfeld; Dimitar Trajkovski; Matjaž Debevc; Tomaž Romih, MSc; Asst. Prof. Dr. Peter Planinšič; Dr. Dušan Gleich; Karl Benkič

Project partners: University of Ciril and Metod Skopje, Faculty of EE, Techical university of Eindhoven, Faculty of electrical engineering and information technologies


Duration: Oct. 2005 to Oct. 2006

In the year 2006 the development of the e-learning web tool for education of the digital signal processing was continued: correlation and designing the optimized classes if IIR-digital filters was developed.


PUBLICATIONS

Dušan Gleich, Mihai Datcu, “Gauss-Markov model for wavelet-based SAR image despeckling,” IEEE signal process. lett., Vol. 13, No. 6, pp. 365-368, 2006.

Peter Planinšič, Dušan Gleich, Jože Mohorko, “Transmission of images over general packet radio services using advanced wavelet image codecs and digital signal processor chips,” J. electron. imaging (Print), Vol. 15, no. 4, 2006.

Karl Benkič, Jernej Otič, Marko Malajner, Peter Planinšič, “Teaching "communications in automation" through practical accession with independent student projects,” 48th International symposium ELMAR-2006 focused on multimedia signal processing and communications, Zadar, Croatia, Jun. 2006, pp. 279-283.

Boris Bizjak, Peter Planinšič, “Classification of power disturbance using fuzzy logic,” EPE-PEMC 2006: conference proceedings, 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1356-1360.

Žarko Čučej, “Experiences with guided e-supported learning in signal theory course,” New trends in engineering education, TEMPUS Project SCM C010A05 "Initiation of blended learning system", Ohrid, Macedonia, Sep. 2006.

Vlado Kitanovski, Dimitar Taskovski, Sofija Bogdanova, Peter Planinšič, Žarko Čučej, “Java based e-learning web tool for education of designing the optimized classes of IIR-digital filters,” New trends in engineering education, TEMPUS Project SCM C010A05 "Initiation of blended learning system", Ohrid, Macedonia, Sep. 2006.

Jernej Otič, Karl Benkič, Peter Planinšič, “Education of remote control, communications and computer vision by a small electric vehicle controlled remotely over the internet,” IWSSIP 2006: proceedings of the 13th International Workshop on Systems, Signals and Image Processing [and] proceedings COST 292 special session Semantic Multimodal analysis of digital media, Budimpešta, Hungary, Sep. 2006, pp. 411-414.

Jernej Otič, Peter Planinšič, “Small electric vehicle guided remotely by wireless and the internet communication, using a video camera,” International Symposium Remote Engineering Virtual Instrumentation, Maribor, Slovenia, Jun. 2006.

Aleksandar Peulić, Siniša Randjić, Žarko Čučej, “ZigBee based patient's parameters monitoring system,” IWSSIP 2006: proceedings of the 13th International Workshop on Systems, Signals and Image Processing [and] proceedings COST 292 special session Semantic Multimodal analysis of digital media, Budapest, Hungary, Sep. 2006, pp. 391-394.



Prof. Dr. Žarko Čučej: Member of international programme board, conference, 48th International Conference on Electronic in Marine, Zadar, Zadar, Croatia, June 7–9, 2006.

Prof. Dr. Žarko Čučej: Reviewer, conference, 48th International Conference on Electronic in Marine, Zadar, Zadar, Croatia, June 7–9, 2006.

Prof. Dr. Žarko Čučej, Asst. Prof. Dr. Peter Planinšič:

Member of international programme board, conference, 13th International Conference on Systems, Sygnals and Image Processing IWSSIP 2006 and COST 292 Semantic Multimodal Analysis of Digital Media, Budimpešta, Hungary, Sept. 21–23, 2006.

VISITS TO OTHER INSTITUTIONS

Prof. Dr. Žarko Čučej, Tomaž Romih, MSc:

Visit within the framework of project Elephant, visit, Poznan, Poland, Apr. 3–7, 2006.

Asst. Prof. Dr. Peter Planinšič: Seminar lecture of Dr. Sacha J. Mooney (University of Nothtingham, UK) ''New Advances in Soil Phyisics: Imaging the Soil Porous Architecture'', seminar participation, Maribor, Slovenia, May 23, 2006.

Asst. Prof. Dr. Peter Planinšič: Seminar-lecture of Prof. Dr. Dušana Petrač (Jet Propulsiomnm Laboratory-Caltech, Pasadena, USA) ''Najnovejši dosežki pri raziskovanju vesolja'', seminar participation, Maribor, Slovenia, June 14, 2006.

Prof. Dr. Žarko Čučej: Vist to talk about further collaboration and support by establishing slovenian remote sensing centre, visit, Wessling, Germany, July 8, 2006.

Prof. Dr. Žarko Čučej, Asst. Prof. Dr. Peter Planinšič:

TEMPUS project SCM C010A05 '' Initiation of Blended learning System'' active attendance at


conference ''New Trends in Engineering Education'', meeting participation, Ohrid, The Former Yugoslav Republic Macedonia, Sept. 13–15, 2006.

Dr. Dušan Gleich, Asst. Prof. Dr. Peter Planinšič:

Visit in the frame of bilateral research project ''BI-RO/05-06/012", research work, Bucharest, Romania, Nov. 5–12, 2006.

Karl Benkič, Prof. Dr. Žarko Čučej, Dr. Jože Mohorko:

Execution of lecture and computer exercises: "Security in telecommuniation networks", seminar participation, Poljče, Slovenia, Nov. 8–12, 2006.

Prof. Dr. Žarko Čučej: Visit within the framework of bilateral project NGWSN-06-07, visit, Čačak, Yugoslavia, Nov. 20–24, 2006.

Prof. Dr. Žarko Čučej: Visit within the framework of project COSUCOLA, visit, London, United Kingdom, Dec. 2–4, 2006.

GUESTS AND VISITORS

Sofija Bogdanov, Vlado Kitanovski, Dimitar Trajkovski (University of Ciril and Metod Skopje, Faculty of EE, Skopje, The Former Yugoslav Republic Macedonia):

Visit within the framework of project Tempus SCM-C010A05, scientific collaboration, Apr. 3–14, 2006.

Vlado Kitanovski (University of Ciril and Metod Skopje, Faculty of EE, Skopje, The Former Yugoslav Republic Macedonia):

Research vsit within the framework of project Tempus SCM-C010A05, research work, July 1 to Aug. 29, 2006.

Inge Gavat (Politechnica University oof Bucharest, Bucharest, Romania):

Visit within the framework of bilateral project ''BI-RO/05-06/012", research work, Sept. 20–29, 2006.

Radojka Krneta (University of Kragujevac; Faculty of Technical Science Čačak, Čačak,

Visit within WUS-project, visit, Sept. 25–29, 2006.


Yugoslavia):

Aleksander Peulić (University of Kragujevac; Faculty of Technical Science Čačak, Čačak, Yugoslavia):

Visit within the framework of project MPD-05-06 '' Monitoring physiological data by use of distributed inteligent sensors linked by wireless network'', research work, Oct. 15 to Nov. 15, 2006.

Uroš Pešić (University of Kragujevac; Faculty of Technical Science Čačak, Čačak, Yugoslavia):

Research visit within the framework of bilateral project MPD-05-06, research work, Dec. 1 to Jan. 31, 2007.

Process Automation Laboratory AU - 25

PROCESS AUTOMATION LABORATORY

Head:


Phone: +386 2 220 71 60


RESEARCH PROJECTS



CO STV RRP3 Center odličnosti za sodobne tehnologije vodenja - RR projekt: AK3a-3 (Centre of Exellence for Advanced Control Technologies - R&D Project: AK3a-3)

Leader: Assoc. Prof. Dr. Boris Tovornik (Faculty of Electrical Engineering and Computer Science)

Participants: Asst. Prof. Dr. Martin Terbuc; Aleksander Polutnik, MSc; Alojz Hojnik; Božidar Bratina; Asst. Prof. Dr. Marjan Golob; Asst. Prof. Dr. Nenad Muškinja

Project partners: Inštitut Jožef Stefan, Faculty of Electrical Engineering and Computer Science, Špica International, INEA d.o.o., TELEM d.o.o.., Faculty of Electrical Engineering, Univesity of Ljubljana

Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia, European Union

The main objective of the project part «The technologies of remote and distributed control« within the complete project »The Centre of Excellence for modern technology control« is to perform research and development activities in the area of new communication technologies for the purpose of remote and distributed control. The project was positively concluded in December 2006. The test system for the remote and distributed control of the laboratory hydraulic object-based on different communication technologies such as CAN, Profibus, Ethernet and Profinet was realised in the laboratory of the CO at the faculty. The development of wireless communications appropriate for the remote and distributed systems

AU - 26 Process Automation Laboratory

of control and implementation of the interface for GSM, GPRS and SMS technology was carried out. The implementation of virtual private network (intranet) technology for the system requirements of the remote and distributed control was completed. The comparison between Open source based and payable SCADA software was also completed.


CEEPUS-CII-CZ-0031

International study in Automatic Control


Project partners: Lublin University of Technology, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, Czech Technical University Prague, Technical University of Sofia - Branch Plovdiv, Faculty of Electrical Engineering and Communication, Brno University of Technology, University of Miskolc, Kielce University of Technology, Technical University of Kosice, Faculty of Natural Sciences, Mathematics and Education, University of Split, Faculty of Chemical Engineering and Technology, University of Zagreb, Slovak University of Technology in Bratislava

Financed by: CEEPUS

In the year 2005/06 the project CEEPUS II network started. This network is designed to stimulate academic mobility between partnership universities, in particular student mobility within Central Europe. The shortest possible mobility of undergraduate students is one semester where the student has to fulfil all study obligations at the host institution, which are completely acknowledged by the home institution. The obligation of the teacher mobility programme is to give lectures 6 hours per week at the host institution. In this year we also participated at a summer school in Modern Trends in Control - International Study in Automatic Control, ISAC 2006, Košice, Slovak Republic.

E!3223 - FDLC The Fuzzy Logic Control Of a Distillation Process

Leader: Andrej Rotovnik (MIEL Elektronika, d.o.o) Participants: Assoc. Prof. Dr. Boris Tovornik, Asst. Prof. Dr. Marjan Golob, Asst.

Prof. Dr. Nenad Muškinja, Božidar Bratina, Alojz Hojnik Project partners: Tasmo Bit, Moray College

Financed by: EUREKA

A fuzzy logic control system for the distillation process will be developed. In these types of


technological processes there is a lot of empirical knowledge, which will be transformed into fuzzy logic rules and used for computer supported process. This year the laboratory model of the control and monitoring system for the distillation process has been developed and tested.


Research and development project

STV AK3-1 Sodobne tehnologije vodenja za povečanje konkurenčnosti - Napredni gradniki za celovit sistem računalniško podprtega vodenja proizvodnje (Modern management technologies to improve competitive postion - Advanced elements for computer supported production system management)

Leader: Stojan Kokošar (Synatec d.o.o.) Participants: Assoc. Prof. Dr. Boris Tovornik, Asst. Prof. Dr. Marjan Golob, Asst.

Prof. Dr. Nenad Muškinja, Božidar Bratina, Alojz Hojnik Project partners: Inštitut Jožef Stefan, Metronik, d.o.o., Robotina, INEA d.o.o.,

Synatec d.o.o., Špica International, Faculty of Electrical Engineering, University of Ljubljana

Financed by: European Union, Ministry of Economics of the Republic of Slovenia

Duration: July 2004 to Dec. 2006

The proposed project “Advanced Elements for Computer Supported Production System Management” was one of the projects carried out under the joint project “Modern Management Technologies to Improve Competitive Position”. The project was positively concluded in December 2006.

The partners involved in this project covered all of the important aspects of development process, transfer of knowledge, introduction, implementation and exploitation of computer based production management systems:

• Leading Slovenian engineering companies - implementation companies - in the field of computer supported systems for production management.

• Industrial companies – users of systems for production management.

• Academic institutions, cooperating at the level of use, transfer and introduction of computer based production management systems.

The goals achieved on the end of the project are:


• Development of models for computer supported production system management, on the basis of existing reference models, standards, products on the market, and experiences.

• Realization of new functionalities for production system management, which provide and assure more effective control and appropriate production management.

• Execution of 6 demonstration projects in complex production plants such as serial production processes.

• To standarize the process of carrying out projects in the field of computer supported production.

• Evaluation of achieved results within increased production efficiency.

• Development of the projects’ results marketing strategy in Central Europe.

Industrial project

DR-VNG Digitalna regulacija VN generatorja (A digital control of HV generator)


Participants: Asst. Prof. Dr. Marjan Golob, Peter Gabrovšek Project partners: Metrel d.o.o.


Duration: Feb. to June 2006

The main objective of the project was to improve the properties of the digital controller applied on a high-voltage generator (50 – 1000V) used in Metrel’s electrical installation testers. Operation of the high-voltage generator and operation of the tester with actual discrete controller was tested and analysed. The testing circuit suitable for developing a discrete PWM controller was prepared. The improvement of the control algorithm was presented and realised on the tester. The stability of the output voltage was increased based on the improved design of the discrete control algorithm. Consequently, measurement of the insulating resistance with smaller current was reached.

PUBLICATIONS

Nenad Muškinja, Boris Tovornik, “Swinging up and stabilization of a real inverted pendulum,” IEEE trans. ind. electron. (1982. Print), Vol. 53, No. 2, pp. 631-639, Apr. 2006.


Drago Valh, Božidar Bratina, Boris Tovornik, “On-line fault detection and isolation using analytical redundancy,” Electrotechnical Review, Vol. 73, No. 5, pp. 267-272, 2006.

Božidar Bratina, Boris Tovornik, “Sprotna detekcija in izolacija napak s pomočjo analitične redundance in metode glavnih komponent v zaprti regulacijski zanki,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 258-261.

Marjan Golob, Božidar Bratina, Boris Tovornik, “Modelling of hydraulic elements for design and supervision of hydraulic processes,” 5th Vienna Symposium on Mathematical Modeling, Vienna, Austria, Feb. 2006.

Milan Rotovnik, Matjaž Debevc, “Daljinsko upravljanje mikrokrmilniškega omrežja v okolju LabVIEW,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 389-390.

Boris Tovornik, Božidar Bratina, “On-line fault detection and isolation by principle component analysis,” Modern trends in control, pp. 33-42, 2006.

PRESENTATIONS BY THE LABORATORY MEMBERS

Marjan Golob, Boris Tovornik: “The technologies of the remote and distributed control within the complete project The Centre of Excellence for modern technology control,” presentation of the project results at project meeting, Ljubljana, Slovenia, May 12, 2006.

Božidar Bratina: “Project presentation at fair Hevreka'06,” presentation of the project part «The technologies of the remote and distributed control« within the complete project »The Centre of Excellence for modern technology control«, Ljubljana, Slovenia, Oct. 24, 2006.


Asst. Prof. Dr. Marjan Golob: Reviewer for ISA Transactions, referee of a scientific articles.

Asst. Prof. Dr. Marjan Golob: Reviewer for Applied Soft Computing, referee of a scientific articles.

Asst. Prof. Dr. Marjan Golob: Reviewer for IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics, referee of a scientific articles.


Asst. Prof. Dr. Marjan Golob: Reviewer for Engineering Applications of Artificial Intelligence, referee of a scientific articles.


Asst. Prof. Dr. Nenad Muškinja: DAAD-Projekt: Akademischer Neuaufbau Sudosteuropa, Teilprojekt "Machatronik II", visit, Ilmenau, Germany, Feb. 13–17, 2006.

Božidar Bratina: Visit of Jožef Stefan Institute, postgraduate research work, 1000 Ljubljana, Slovenia, Mar. 29, 2006.

Božidar Bratina: To lecture at the Summer School CEEPUS, meeting participation, Kosice, Slovakia, July 10–14, 2006.

Božidar Bratina: Visit of Brodarski Institute, postgraduate research work, Zagreb, Croatia, Dec. 8, 2006.

GUESTS AND VISITORS

Iztok Fekonja (Automation X, Graz, Austria):

Presentation Automation platform based on Open-source organized by the Centre of Excellence for modern technology control, postgraduate research work, Nov. 24, 2006.

Martin Terbuc (School center Ptuj, Ptuj, Slovenia):

Presentation with title Application of the Open-source technology for the remote and distributed control systems organized by The Centre of Excellence for modern technology control, visit, Dec. 19, 2006.

Measurements Laboratory AU - 31

MEASUREMENTS LABORATORY

Head:

Assoc. Prof. Dr. Vojko Matko

Phone: +386 2 220 71 11


RESEARCH PROJECTS



M2-0134 IT Development Concept Formulation and Strategy for Data Collection, Maintenance and Management

Leader: Assoc. Prof. Dr. Vojko Matko (Faculty of Electrical Engineering and Computer Science)

Participants: mag. mikola, Darko Hercog, dipl. inž., dr. Bojan Gergič, Miloš Vute, inž., Stanko Lampič, inž., Barbara Brezovec, dipl. inž.

Project partners: IJS, IGEA

Financed by: MORS

The goal of this project is to design the information communication system tools, effectively supporting protection and rescue operations and harmonizing the actions of various rescue teams. The system must enable close cooperation with other partners within the framework of protection against natural and other disasters and provide realiable operation, to which a special attention must be paid already in the development stage.


EDIPE E-learning Distance Interactive practical Education, Leonardo da Vinci CZ/06/B/PP-168022

Leader: Pavol Bauer (Delft University of Technology)

AU - 32 Measurements Laboratory

Participants: Prof. Dr. Karel Jezernik, Istvan Nagy, Vitezslav Hajek, Dusan Maga, Bernard Davat, Marian P. Kazmierkowski, Dan Lascu, Stefanos Manias, Andreas Steiml, Thomas Wolbank, Pavol Bauer, Asst. Prof. Dr. Suzana Uran, Darko Hercog, Viliam Fedak

Project partners: Faculty of electrical engineering and communication, Brno University of Technology, Dept. of Electrical and Computer Engineering, National Technical University of Athens, Institute of Electrical Drives and Machines, Delft University of Technology, Faculty of Electrical Engineering and Computer Science, Institute for Electrical Power Engineering and Power Electronics, Ruhr Uni Bochum, Institut National Polytechnique de Lorraine, ENSEM, Department of Automation and Applied Informatics at BUTE, Institute of Control and Industrial Electronics, Warsaw University of Technology, Politehnica University Timisoara, Electronics and Telecommunications Faculty, Technical University of Kosice, Faculty of Electrical Engineering and Informatics, Faculty of Mechatronics, Alexander Dubcek University in Trencin

Financed by: European Commission

Recent progress in information and communication technology brings out many different possibilities of using the Internet in educational processes, among others, also the use of remote laboratories. Remote labs contain a set of real experiments, which are physically placed in the classical labs, while the user can access and execute these experiments from the remote computer. European project „E-learning Distance Interactive Practical Education” (EDIPE) is a Leonardo da Vinci project that involves 14 partners from different parts of the European Union. The main aim of this project is the development of remote-experiments in the field of Electrical Engineering fundamentals, through electronics, power electronics, and the dynamics of electro-mechanical systems. In total, 18 different remote-experiments will be realized, while the main emphasis will be given to the quality of learning materials.


Applied project

LEM - J2EE J2EE aplikacijski strežnik in prenos podatkov z XML datoteko (J2EE Application Server and XML File Data Transfer)


Participants: Samo Uršej, Peter Čuš


Project partners: SMM, Prevent, d.o.o.

Financed by: Prevent, d.o.o.

Duration: Jan. to Dec. 2006

The project involved an analysis of J2EE platform application servers. It focused on the analysis of the SAP WEB and IBM WebSphere Application Servers. It aimed to develop an application which would run on the SAP J2EE Engine and capture data from SQL database and save them in the XML file, enabling data tranfer among various remote systems.


M2-0034 Raziskava elektromagnetnega sevanja radijskih telekomunikacijskih sistemov in postopki človeka pri ravnanju s temi napravami (Research on the biological effects of electromagnetic radiation (EMR) of radio telecommunication systems and measures to be taken to minimise health risks associated with EMR)


Participants: Stanislav Lampič; Marko Podberšič; Dr. Bojan Gergič; Darko Hercog; Ladislav Mikola, MSc; Miloš Vute

Financed by: Ministry of Defence, ARRS

Duration: Aug. 2004 to June 2006

A comprehensive overview study of non-ionizing radiations' potential hazards included an overview of all available sources on the subject, standards, and techniques, and provided instructions for firemen and other rescue teams operating in the vicinity of such devices.

Industrial project

LEM-UAPM Določanje merilne negotovosti kontrole števcev električne energije in stikalnih ur (Uncertainty analysis of calibration of energy meters and tariff switching clocks)

Leader: Ladislav Mikola, MSc (Faculty of Electrical Engineering and Computer Science), Dr. Bojan Gergič (Faculty of Electrical


Engineering and Computer Science)

Financed by: Elektro Maribor, d.o.o.

Duration: Dec. 2005 to Jan. 2006

The training of engineers for the Elektro Maribor company d.d. was performed concerning measurement uncertainty and uncertainty analysis about the calibration of energy meters and tariff switching clocks for the accreditation of their measurement laboratory.

LEM - OCMSAP Odzivni čas meritev v SAP programskem okolju (Response Time Measurement Inside SAP Program Applications)


Participants: Samo Uršej, Darko Hercog, Dr. Bojan Gergič Project partners: Prevent, d.o.o.

Financed by: Prevent, d.o.o.


Using the Java Applet application, the SQL server response speeds to increased database access frequency were measured. The worst case scenario system was defined using various equipment and integration levels. Also, using the ABAP/4 computer program language some solutions were provided.

LEM - ZPOPR Zanesljivost proizvodne opreme v podjetju REVOZ d.d. (REVOZ d.d. Company Production Equipment Reliability)


Participants: Boštjan Žibert

Financed by: Revoz d.d.


This project aimed at evaluating the reliability of equipment used in the automobile industry, by discussing some of the lean production tools such as JUST IN TIME, PERMANENT IMPROVEMENT – KAIZEN, WORKPLACE ORGANIZATION – 5S, VISUAL CONTROL, AUTONOMUS MAINTENANCE, TOTAL PRODUCTIVE MAINTENANCE – TPM, etc. It focused on and discussed the Renault production system and provided the TPM program results.


PUBLICATIONS

Vojko Matko, “A comparison of frequency pullability in oscillators using a single AT-cut quartz crystal and those using two single AT-cut crystals connected in parallel with a series load capacitance or series load capacitance or series load inductance,” Sensors, Vol. 6, Iss. 6, pp. 746-755, 2006.

Marko Podberšič, Vojko Matko, Matjaž Šegula, “An EMI filter selection method based on spectrum of digital periodic signal,” Sensors, Vol. 6, Iss. 3, pp. 90-99, 2006.

Suzana Uran, Darko Hercog, Karel Jezernik, “Remote lab experiment RC oscillator for learning of control,” Int. j. online eng., Vol. 2, No. 4, 2006.

Barbara Brezovec, Vojko Matko, Darko Hercog, Bojan Gergič, “Remote measurement of temperature and humidity in climate chamber with LabVIEW software,” International Symposium Remote Engineering Virtual Instrumentation, Maribor, Slovenia, Jun. 2006.

Bojan Gergič, Darko Hercog, “Virtual instruments for remote experiments visualization,” International Symposium Remote Engineering Virtual Instrumentation, Maribor, Slovenia, Jun. 2006.

Darko Hercog, Milan Čurkovič, Karel Jezernik, “DSP based rapid control prototyping systems for engineering education and research,” Proceedings of the IEEE International Conference on Control Applications (CCA), International Conference on Computer Aided Control Systems design (CACSD), and International Symposium on Intelligent Control (ISIC), Munchen, Germany, Oct. 2006, pp. 2292-2297.

Darko Hercog, Bruno Villaca, Bojan Gergič, Martin Terbuc, “Moodle booking system for remote experiments,” International Symposium Remote Engineering Virtual Instrumentation, Maribor, Slovenia, Jun. 2006.

Riko Šafarič, Marjan Plenjšek, Darko Hercog, “Telerobotics experiments with LEGO mindstorm,” International Symposium Remote Engineering Virtual Instrumentation, Maribor, Slovenia, Jun. 2006.

Suzana Uran, Darko Hercog, Karel Jezernik, “Matlab web server and web-based control design learning,” The 32nd Annual Conference of the IEEE Industrial Electronics Society, Paris, France, Nov. 2006.

Suzana Uran, Darko Hercog, Karel Jezernik, “Remote lab experiment RC oscilator for learning of control,” International Symposium Remote Engineering Virtual Instrumentation, Maribor, Slovenia, Jun. 2006.



Vojko Matko, Ladislav Mikola, Miloš Vute, Darko Hercog, Bojan Gergič, Stanislav Lampič: “Research on the biological effects of electromagnetic radiation (EMR) of radio telecommunication systems and measures to be taken to minimise health risks associated with EMR,” research on the biological effects of electromagnetic radiation (EMR) of radio telecommunication systems, Maribor, Slovenia, May 21, 2006.

Darko Hercog: “Presentation of Institute of robotics at 39th International trade fair in Celje,” exibits, video presentation, lecture, Celje, Slovenia, June 9, 2006.

Bojan Gergič: “Natural Science and Technics Day,” workshop: Virtual Instruments, Maribor, Slovenia, Sept. 22, 2006.

Barbara Brezovec, Vojko Matko, Darko Hercog, Bojan Gergič: “Hevreka´06´,” remote measurement of temperature and humidity in climate chamber with LabVIEW software, Ljubljana, Slovenia, Oct. 24, 2006.

Darko Hercog: “Presentation of remote control laboratoy at fair Hevreka'06,” collaboration at fair with remote lab poster and handbills, Ljubljana, Slovenia, Oct. 24, 2006.


Ladislav Mikola, MSc: Programme committee member, expert meeting, 27. posvetovanje o močnostni elektrotehniki in sodobnih električnih inštalacijah - Kotnikovi dnevi, Radenci, Slovenia, Mar. 23–24, 2006.

Dr. Bojan Gergič: Organising committee member, international symposium, International Symposium on Remote Engineering and Virtual Instrumentation 2006, Maribor, Slovenia, June 29–30, 2006.

Dr. Bojan Gergič, Darko Hercog, Assoc. Prof. Dr. Vojko Matko:

LabVIEW competition 2006, student contest, organisation and implementation, Maribor, Slovenia, Nov. 6 to Dec. 22, 2006.

Electro-Optics and Sensor Systems Laboratory AU - 37

ELECTRO-OPTICS AND SENSOR SYSTEMS LABORATORY

Head:

Assoc. Prof. Dr. Denis Đonlagić

Phone: +386 2 220 71 17


RESEARCH PROJECTS



M2-0131 Napredni optični senzorji na osnovi optičnih vlaken za uporabo v obrambnih in civilnih sistemih (Advanced optical sensors based on optical fibers for use in defense and civil systems)

Leader: Assoc. Prof. Dr. Denis Đonlagić (Faculty of Electrical Engineering and Computer Science)

Participants: Domen Golob, Matjaž Linec, Marko Kežmah, Dr. Edvard Cibula Project partners: Mikrobit d.o.o., Optacore d.o.o.

Financed by: Ministry of Defence

The presented project consists of several smaller project parts, intended for use in defense and civil applications. The first part of the project is comprised of several optical fiber sensors for the detection of intruders in secured areas. The first sensor is designed as an optical accelerometer. This accelerometer will act as a highly sensitive seismometer for the detection of ultra low vibrations induced by personnel or vehicle movements over the designated area. A suitable algorithm with accompanying electronics will be able to generate an alarm, based on these detected vibrations. The second sensor will be embedded under the secured areas which can have irregular shapes. The detected signal will change due to the disturbances on the protected surface – the signal will be electronically processed and the alarm will be generated based on the appropriate algorithm. The third sensor for intrusion detection is based on the deployment of the transmission fiber in the field. The optical fiber will be

AU - 38 Electro-Optics and Sensor Systems Laboratory

deployed around the protected area where any unauthorized access will be detected. The main challenge for the project is the development of a special fiber, resilient enough to allow simple perimeter deployment without the danger of breakage during deployment. The second challenge is the development of a suitable electronic system that will detect intrusion, and determine its location.

The second part of the project is comprised of optical fiber temperature sensors. The first sensor will be developed as a quasi-distributed system that will incorporate up to 10 temperature measuring sections over one sensor arm of the system. The principle of its operation is based on the polarization properties of light in a special optical fiber that is temperature-dependent. The temperature change can be detected using the OTDR, which measures losses in different parts of the optical fiber. The main challenges of the project are loss control, sensor manufacturing process, and suitable special fiber usage. The second sensor for temperature monitoring will be completely distributed and will enable temperature measurements over the entire length of the optical fiber. The sensing principle is based on microdeformations of the optical fiber caused by temperature variations. For this purpose, a special optical fiber with copper coating will be produced. A special technique will further enable the formation of a special structure over the entire length of the fiber that will cause deformations of the fiber due to temperature changes. The temperature change will, therefore, reflect in the loss properties of the fiber.

The third part of the project includes the development of special optical fiber sensors for the detection of vehicles and pedestrians. The goal of the project is the development of a system with a longer life-span and preferably smaller deployment costs than current solutions on the market. Furthermore, the systems will be deployable over wider areas and will have fever limits than current products. The principle of detection is based on the attenuation of light in optical fibers due to the pressure induced by the measured vehicles or pedestrians. Currently, the project is in the phase of live-testing in the field.

The last, and fourth part of the project, is the development and design of special optical fibers that will enable simultaneous protection against intrusion and intrusion detection for fibers in telecommunication systems. Because the optical signal can be quite easily coupled out of the optical fiber (which enables data tapping), a new system is being developed that will simultaneously detect and aggravate any data tapping of optical fibers due to more difficult access to the optical fiber core. For this purpose, special optical fibers and couplers will be developed.


Optical fiber pedestrian sensor.


VMOEMS Fiber MOEMS Sensors

Leader: Assoc. Prof. Dr. Denis Đonlagić (Faculty of Electrical Engineering and Computer Science)

Participants: Marko Kežmah, Dr. Edvard Cibula, Matjaž Linec

AU - 40 Electro-Optics and Sensor Systems Laboratory

Financed by: Roctest FISO Technologies Incorporated

The aim of this project is to develop an array of Fiber Micro Optical Electro – Mechanical systems. One of the proposed solutions is an optical fiber strain sensor based on the Fabry-Perot resonator, in the form of an aerial rift inside the fiber itself. We have developed a working prototype that features linear responsivity, low transmission losses, low temperature dependence, and a simple manufacturing process. The result of this project has an awarded patent in Slovenia.

The miniature optical pressure sensor is based on optical fibers and SiO2 membranes. The developed product could be used in many diverse applications such as biomedicine, different industrial fields, etc. Because of the special manufacturing technique, the sensor can be tuned to pressure ranges from 0 to 40kPa for uses in medicine, as well as several hundred MPa. The use of SiO2 enables high chemical and temperature resistance.

The optical quasi-distributed pressure sensor is based on a multitude of successive point pressure sensors embedded inside an optical fiber. The composition, therefore, acts as a quasi-distributed pressure sensor. The sensor itself is electrically passive and very resistant to high temperatures and aggressive media. It is appropriate for high pressure measurements.

The fabrication of micro lenses on top of optical fibers allows integration of MOEMS technology into optical fibers. The manufacturing process is based on the use of appropriate fibers combined with different etching techniques. Micro lenses can be used in optical communication systems, sensor systems, micro optics, etc.

PUBLICATIONS

Denis Đonlagić, “In-line higher order mode filters based on long highly uniform fiber tapers,” J. lightwave technol., Vol. 24, No. 9, pp. 3532-3539, Sep. 2006.

Denis Đonlagić, Miran Lešič, “All-fiber quasi-distributed polarimetric temperature sensor,” Opt. express, Vol. 14, No. 22, pp. 10245-10254, Oct. 2006.

Marko Kežmah, Denis Đonlagić, “Nadzor globine jedkanja silicijevih mnogorodovnih optičnih vlaken,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 489-492.

Matjaž Linec, Denis Đonlagić, “Induktivni merilnik pomika na osnovi neenakomerno navite tuljave,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 473-476.



Denis Đonlagić: “5th technology transfer day for Chamber of craft of Slovenia,” sensors on the basis of optical fibers (Donlagic), Influence of electronic load on network (Milanovic), LCD technologies and their practical use (Kramberger), Maribor, Slovenia, Feb. 17, 2006.

GUESTS AND VISITORS

Eric Pinet (Roctest FISO Technologies Incorporated, Quebec, Canada):

Visit, knowledge transfer, scientific collaboration, Feb. 10–22, 2006.

Sylvain Rioux (Roctest FISO Technologies Incorporated, Quebec, Canada):

Collaboration agreement meeting, visit, Mar. 16–17, 2006.

Stephen Rackstraw, Hiroko Emura (Fujikura Europe Ltd, Surrey, United Kingdom):

Presentation of a fuision splicer, visit, June 4–8, 2006.

Eric Pinet (Roctest FISO Technologies Incorporated, Quebec, Canada):

Visit, knowledge transfer, scientific collaboration, June 4–26, 2006.

Institute of Electronics and Telecommunications EL - 1

INSTITUTE OF ELECTRONICS AND TELECOMMUNICATIONS

Head:

Prof. Dr. Zmago Brezočnik

Phone: (02) 220 72 10


URL: http://www.elektronika.uni-mb.si/

The Institute of Electronics and Telecommunications was established in 2006 by merging the Institute of Electronics and the Institute of Telecommunications. It has 38 full-time and 3 part-time employees including 4 full professors, 3 associate professors, 10 assistant professors, 2 higher lecturers, 1 lecturer, assistants, researchers and technical staff. The members of the institute carry out teaching and research in the areas of electronics and telecommunications. The primary topics of their research work are: multimodal communications, language technologies, digital signal processing, automatic speech recognition and synthesis, formal specification and verification of contemporary reactive systems, next generation networks, development of protocol stacks, development of telecommunication services, electronic circuits, digital filters, microcomputer systems, and special electronic assemblies. The research is carried out within the framework of programme unit Advanced methods of interaction in telecommunications, which is financed by the Ministry of Higher Education, Science and Technology of Republic of Slovenia, and as part of several projects. In 2006, members of the institute led or co-operated in 8 international projects, 4 research and development projects, 2 applied projects, and 7 industrial projects. Within this period, they published 49 publications. They co-operated on the organisation and programme committees at several scientific meetings and conferences. The results of their research were

EL - 2 Institute of Electronics and Telecommunications

presented at related institutions in Slovenia and abroad. Foreign researchers have also been hosted at the institute.

The members of the Institute of Electronics and Telecommunications are organised into four laboratories and two centres of technology

Digital Information Systems Laboratory

Head: Prof. Dr. Bogomir Horvat

Electronics Systems Laboratory

Head: Assoc. Prof. Dr. Rudolf Babič

Microcomputer Systems Laboratory


Digital Signal Processing Laboratory

Head: Prof. Dr. Zdravko Kačič

Institute of Electronics and Telecommunications


Institute of Electronics and Telecommunications EL - 3

Digital and Information Systems Laboratory

Head: Prof. Dr. Bogomir Horvat

Employees: Asst. Prof. Dr. Mitja Solar; Asst. Prof. Dr. Janez Stergar; Rado Slatinek, MSc; Asst. Prof. Dr. Iztok Kramberger; Dušan Prelog, BSc; Srečko Grašič, BSc; Marcel Ogner, BSc; Andrija Šulić

Part-time employees: Prof. Dr. Gorazd Kandus, Asst. Prof. Dr. Bojan Imperl; Vladimir Jenuš, MSc

Electronic Systems Laboratory

Head: Assoc. Prof. Dr. Rudolf Babič

Employees: Assoc. Prof. Dr. Tomaž Dogša; Asst. Prof. Dr. Franc Jurkovič; Gerhard Angleitner, MSc; Asst. Prof. Dr. Bojan Jarc; Asst. Prof. Dr. Matej Šalamon; Dr. Davorin Osebik; Anton Vesenjak, BSc; Branko Drevenšek, BSc

Centre for Verification and Validation of Systems

Head: Assoc. Prof. Dr. Tomaž Dogša

Microcomputer Systems Laboratory


Employees: Assoc. Prof. Dr. Tatjana Kapus; Dr. Bogdan Dugonik; Filip Samo Balan, MSc; Dr. Robert Meolic; Dr. Boštjan Vlaovič; Peter Vicman, BSc; Dr. Aleksander Vreže; Andrej Romih, BSc

Digital Signal Processing Laboratory


Employees: Asst. Prof. Dr. Matej Rojc; Asst. Prof. Dr. Mirjam Sepesy Maučec; Dr. Bojan Kotnik; Dr. Darinka Verdonik; Asst. Prof. Dr. Andrej Žgank; Dr. Tomaž Rotovnik; Aleksandra Zögling Markuš, BSc; Damjan Vlaj, BSc; Marko Kos, BSc; Matej Grašič, BSc

Centre for Language Technologies


EL - 4 Digital and Information Systems Laboratory

DIGITAL AND INFORMATION SYSTEMS LABORATORY

Head:

Prof. Dr. Bogomir Horvat

Phone: +386 2 220 72 00


RESEARCH PROJECTS


Applied projects

L2-6547 Širokopasovna brezžična dostopovna omrežja (Broadband Wireless Access Networks)

Leader: Assoc. Prof. Dr. Gorazd Kandus (Faculty of Electrical Engineering and Computer Science)

Participants: Prof. Dr. Zmago Brezočnik; Rado Slatinek, MSc; Prof. Dr. Bogomir Horvat

Project partners: Iskratel Ltd.

Financed by: Iskratel Ltd., Metrel, d. o. o.

The aim of this project is to find, test and evaluate technological solutions for wireless broadband-access networks. The first phase will include selection of the network's architecture, and definition of the required broadband service set. Afterwards, overview and evaluation of existing standards and selection of an appropriate frequency area will follow. During the radio interface design, procedures for the improvement of radio-link quality and transmission bit-rate will be sought. Development of new algorithms based on the programmable radio concept and their implementation on the DSP level are planned. At the network level, new routing methods will be tested for different kinds of traffic with the help of the OPNET simulation tool. The access network will serve stationary and mobile users and will be based on the IP protocol stack. Efficient methods for resource and mobility management, as well as dynamic radio-channel allocation, will also be investigated.

Digital and Information Systems Laboratory EL - 5

Industrial projects

METREL-GMI Razvoj modela 10kV generatorja za merilnik izolacije (Model development of 10kV generator for insulation measurement)

Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and Computer Science)

Participants: Asst. Prof. Dr. Mitja Solar, Anton Vesenjak Project partners: Metrel d.o.o.


In the project, a DC-DC converter which converted DC input voltage within the range 7 to 12 V into 500V, 1000V, 2500V, 5000V and 10kV output voltage was constructed. For a power supply line, regulator or battery cells were used. In the case of peak-power, supply regulator or battery cells have to obtain the currents of 8A and, at least, 16W of power. The output current from DC-DC converter has to be limited to 1,5 mA on each selected voltages. The exception is 10kV, where a current of 1mA is achieved.

Burn-in Burn-in sistem (Burn-in system)

Leader: Dr. Iztok Kramberger (Faculty of Electrical Engineering and Computer Science)

The Burn-In project represents a system for performing the final tryout procedure for different types of the digital transmitters from the Company Elti. Between its activities, the system assures real-time information about all the errors and events that could, in some way, influence the quality and reliability of the completed products. With this purpose in mind, on-time and fast analysis of the measured data is required for each individual measurement's end-point. As the Burn-In process represents the final tryout of the digital transmitters it is necessary to ensure the independence of any possible human/technical factors that could, in some way, influence the quality and reliability of the digital transmitters. Therefore, the tryout procedure is straight-forward and fully transparent, and includes automated device identification and completely dynamic attachment/detachment features at the testing points. The acquiring of the measurement data at the testing point is performed on the local area network at the level of the IP protocol. This project includes several different applications for network configuration and definition of the common measurement values with appropriate parameter descriptors. The project also includes two web applications for the control and management of the Burn-In process, that enable a review of the measurement and alarm values within the graphical or table presentations. The system is designed for simultaneous tryout processes, at 250 testing points (for example 250 digital transmitters), while the measured parameter values are also stored within data storage for later examination.


ELTI SFN ELTI SFN pretvornik (ELTI SFN converter)

Leader: Dr. Iztok Kramberger (Faculty of Electrical Engineering and Computer Science)

The GPRS Remote Control is a network-based application for the remote monitoring and supervision of Elti digital transmitters. It provides remote monitoring and control of common digital transmitter’s parameters over the Internet network. The basic network concept is a multi-point-to-point architecture which means that the digital transmitters are connecting throught the Internet to a fixed point application server that collects all data transmitted in a single database, and offers a complete solution for device management from a single point of view. Devices can connect to the application server thought any available network technologies that feature IP protocol as, for example, GPRS. While the application server requires a static internet address (IP), the digital transmitter devices can feature either static or dynamic IP addresses. This feature basically depends on their type of connection. GPRS Remote Control application running on the application server is a Web-based application using a system service for connectivity, with devices and a database for data storage. The basic feature of the Web application is that a standard Web-browser is used as a user-interface. From this point of view, the digital transmitters can be controlled from any computer connected to the Internet using a standard Web browser for running the application. The Web-application is multithreaded which means that it can run multiple users at the same time. For communication between the Web-application and the Web-browser, secure HTTP (HTTPS) is chosen for securing the data path while each user has to log-in using its user name and password given from the system administrator. To ensure proper HTTPS communication between the application server and the user’s web-browser, a server certificate has to be installed on the application server. For achieving appropriate security level, the data path through the established Internet connection from the device to the application server is secured using a 128-bit TEA encryption algorithm. At the connection's establishment each of the devices is identified using a unique 32-bit device identification number while the encryption algorithm uses the configurable TEA public key for encrypting the communication channel. After successful identification of the device the system service generates a random 128-bit TEA key for data encryption of the current TCP session.

PUBLICATIONS

Tomaž Aljaž, Bojan Imperl, “Impact of extreme PSTN conditions on VoIP gateway echo cancellation,” J. - Commun. Netw., Vol. 5, no. 2, pp. 68-74, Apr.-Jun. 2006.


Gorazd Kandus, Srečo Plevel, Tomaž Javornik, “Advanced V-BLAST detection algorithm in multi-model spatial multiplexing MIMO system,” WSEAS trans. commun., Vol. 5, pp. 202-209, 2006.

Srečo Plevel, Tomaž Javornik, Gorazd Kandus, Igor Jelovčan, “Transmission scheme selection algorithm for spatial multiplexing MIMO systems with linear detection,” WSEAS trans. commun., Vol. 5, pp. 1169-1176, 2006.

Peter Rulić, Iztok Kramberger, Zdravko Kačič, “Razčlenjevanje barvne slike, zajete s splošnonamenskimi barvnimi kamerami,” Electrotechnical Review, Vol. 73, No. 2-3, pp. 117-124, 2006.

Anita Solar, Mitja Solar, Franci Štampar, “Stability of the annual shoot diameter in Persian walnut: a case study of different morphotypes and years,” Trees (Berl. West), Vol. 20, pp. 449-459, 2006.

Robert Blatnik, Gorazd Kandus, Tomaž Javornik, “Experimental test-bed for VoIP/VoWLAN voice quality measurements,” Proceedings of the 4th WSEAS Int. Conf. on Environment, Ecosystems and Development (EED'06), Benetke, Italy, Nov. 2006, pp. 5-10.

Tine Celcer, Tomaž Javornik, M. H. Capstick, Mihael Mohorčič, Gorazd Kandus, “Analysis of HAP propagation channel measurement data,” 15th IST Mobile and Wireless Summit, Mikonos, Greece, Jun. 2006.

Tine Celcer, Gorazd Kandus, Tomaž Javornik, Mihael Mohorčič, Srečo Plevel, “Evaluation of diversity gain and system capacity increase in a multiple HAP system,” Future satellite communication: new systems, protocol and services: proceedings of the 2006 International Workshop on Satellite and Space Communications (IWSSC2006), Leganés (Madrid), Spain, Sep. 2006, pp. 114-118.

Tomaž Javornik, Gorazd Kandus, Andrej Hrovat, Igor Ozimek, “Comparison of WiMAX coverage at 450MHz and 3.5GHz,” SoftCOM 2006, 14th International Conference on Software, Telecommunications & Computer Networks, Split, Dubrovnik, Croatia, Sep. 2006.

Gorazd Kandus, Tomaž Javornik, Igor Jelovčan, Srečo Plevel, “Effects of nonlinear high power amplifier on the area covered by WiMAX signal,” IEEE 2006 Sarnoff symposium, Princeton, New Jersey, Mar. 2006.

E. Leitgeb, et al. (10 avtorjev), “Importance of optical wireless systems in European networks,” 15th IST Mobile and Wireless Summit, Mikonos, Greece, Jun. 2006, pp.529-533.


E. Leitgeb, S. Sheikh Muhammad, Ch. Chlestil, M. Gebhrt, Tomaž Javornik, Gorazd Kandus, Igor Jelovčan, U. Birnbacher, O. Koudelka, W. Kogler, “Importance of optical wireless systems in European networks,” 46th IUVSTA Workshop & 5th International Symposium on Ultrafast Surface Dynamics, Abashiri, Hokkaido, Japan, May 2006.

Dejan Miletić, Janez Stergar, “Improving recognition efficiency in mobile device with a recursive filter implementation,” Advances in speech technology: proceedings, 2006, pp. 165-173.

Massoud Momeni, Dušan Prelog, Bogomir Horvat, Manfred Glesner, “Design of Delta-Sigma modulators with comparator-based switched-capacitor gain stages,” 2006 IEEJ interantional analog VLSI workshop proceedings, Hangzhou, China, Nov. 2006.

Srečo Plevel, Tomaž Javornik, Gorazd Kandus, Igor Jelovčan, “Link adaption for spatial multiplexing MIMO systems,” 9th WSEAS Int. Conf. on Applied Mathematics (MATH'06), 5th WSEAS Int. Conf. on Telecommunications and informatics (TELE-INFO'06), 5th WSEAS Int. Conf. on Signal processing (SIP'06), Istanbul, Turkey, May 2006.

Dušan Prelog, Janez Stergar, “Simulation of a II. order switched-capacitor sigma-delta modulator for A/D conversion,” MIPRO 2006: 29th International Convention, Opatija, Croatia, May 2006, pp. 147-152.

Andrej Vilhar, Roman Novak, Gorazd Kandus, “Multihoming benefits for network mobility in HAP networks,” ASMS 2006, 3rd Advanced Satellite Mobile Systems Conference, Herrsching am Ammersee, Munchen, Germany, May 2006.

Iztok Kramberger, Zdravko Kačič, “Analiza streoskopskega slikovnega toka v okolju multimodalnih komunikacijskih vmesnikov,” Računalniška obdelava slik in njena uporaba v Sloveniji 2006: zbornik strokovne konference ROSUS 2006, Maribor, Slovenia, mar. 2006, pp. 41-47.

Tomaž Rotovnik, Andrej Žgank, Matej Grašič, Bojan Kotnik, Bojan Imperl, Zdravko Kačič, “Voice driven auto attendant system - a pilot project,” Content and networking: proceedings of the International Symposium on Telecommunications [also] VITEL 2006, Ljubljana, Slovenia, Oct. 2006.

Janez Stergar, Dejan Miletić, “Rapid deployment of content for mobile devices,” Content and networking: proceedings of the International Symposium on Telecommunications [also] VITEL 2006, Ljubljana, Slovenia, Oct. 2006.



Iztok Kramberger: “5th technology transfer day for Chamber of craft of Slovenia,” sensors on the basis of optical fibers (Donlagic), influence of electronic load on network (Milanovic), LCD technologies and their practical use (Kramberger), Maribor, Slovenia, Feb. 17, 2006.


Asst. Prof. Dr. Janez Stergar: Applying for EU projects, seminar participation, Maribor, Slovenia, Feb. 16, 2006.

Prof. Dr. Bogomir Horvat, Dejan Miletić, Marcel Ogner, Asst. Prof. Dr. Janez Stergar:

Cisco EXPO 2006 - conferency about CISCO network technologies, meeting participation, Bled, Slovenia, Mar. 1–3, 2006.

Dušan Prelog: Research collaboration with Technical University of Darmstadt, GER, postgraduate research work, Darmstadt, Germany, Mar. 15 to June 15, 2006.

Prof. Dr. Bogomir Horvat, Asst. Prof. Dr. Janez Stergar:

VITEL - International Symposium on Telecommunications, meeting participation, Ljubljana, Slovenia, Oct. 23–24, 2006.

GUESTS AND VISITORS

Silvo Lipovšek, Elizabeth Di Rocco (Cisco Systems, Belgium):

Presentation of CISCO training courses and network technologies for FERI students, visit, Nov. 24, 2006.

EL - 10 Electronic Systems Laboratory

ELECTRONIC SYSTEMS LABORATORY

Head:

Assoc. Prof. Dr. Rudolf Babič

Phone: +386 2 220 72 30


PUBLICATIONS

Rudolf Babič, Davorin Osebik, “Primerjava tonskih predojačevalnih stopenj s polprevodniškima tranzistorjema in elektroniko,” Inf. MIDEM, Vol. 36, No. 3 (119), pp. 127-133, Sep. 2006.

Bojan Jarc, Rudolf Babič, “Zmanjšanje pomnilniškega prostora za primere nerekurzivnih sit z linearnim potekom faze v klasični in modificirani obliki porazdeljene aritmetike,” Inf. MIDEM, Vol. 36, no. 1 (117), pp. 25-30, Mar. 2006.

Franc Jurkovič, “Elektromehanski televizijski sistemi z neenakomerno analizo in sintezo slike,” Electrotechnical Review, Vol. 73, No. 1, pp. 45-46, 2006.


Tomaž Dogša: “Software testing and software reliability,” software testing and software reliability was carried out at course "Software for process control", Ljubljana, Slovenia, Oct. 16, 2006.

Tomaž Dogša: “Practical course in software testing and software verification and validation,” lecture was carried out at weekly workshop "Instrumentation and control systems modernization training", Ljubljana, Slovenia, Nov. 27, 2006.

Microcomputer Systems Laboratory EL - 11

MICROCOMPUTER SYSTEMS LABORATORY

Head:

Prof. Dr. Zmago Brezočnik

Phone: +386 2 220 72 10


RESEARCH PROJECTS



3311-04-855022 CO ICT – Center odličnosti Informacijske in komunikacijske tehnologije RR6 – Verifikacija pravilnosti delovanja komunikacijskih sistemov (CO ICT – Centre of excellence Information and communication technologies RR6 – Correctness verification of communication system functioning)

Leader: Prof. Dr. Zmago Brezočnik (Faculty of Electrical Engineering and Computer Science, University of Maribor)

Participants: Dr. Boštjan Vlaovič; Dr. Aleksander Vreže; Assoc. Prof. Dr. Tatjana Kapus; Dr. Robert Meolic; Filip Samo Balan, MSc; Prof. Dr. Matjaž Colnarič

Project partners: Jožef Stefan Institute, Institute for Economic Research, Iskratel Ltd.

Financed by: Ministry of Higher Education, Science and Technology of Republic of Slovenia, Iskratel Ltd., European Union

The basic objective of this research and development project was to obtain new knowledge in the area of communications system verification and to transfer existing knowledge in this area to the industry. The planned activities were divided into seven phases: analysis of the existing verification methods and tools, choice of formal verification examples, model generation, formal verification, supplementation of the tools and methods, analysis of the results, and knowledge transfer. In order to formally verify a system specification by using the

EL - 12 Microcomputer Systems Laboratory

Spin tool, a system model in the Promela language is needed. A Promela model of the IUA (ISDN User Adaptation Layer) protocol, which is a part of the telecommunications system SI2000 software, was successfully generated. The results of this part of the research are algorithms for automatic analysis of specifications written in the SDL language, and a framework for C code inclusion in the system model written in Promela.

Applied projects

L2-6547 Širokopasovna brezžična dostopovna omrežja (Broadband Wireless Access Networks)

Leader: Assoc. Prof. Dr. Gorazd Kandus (Faculty of Electrical Engineering and Computer Science, University of Maribor)

Participants: Prof. Dr. Bogomir Horvat; Rado Slatinek, MSc; Prof. Dr. Zmago Brezočnik


Financed by: Iskratel Ltd., Metrel, d. o. o.

The aim of this project is to find, test and evaluate technological solutions for wireless broadband access networks. The first phase will include selection of the network architecture and definition of the required broadband service set. Afterwards, overview and evaluation of existing standards and selection of an appropriate frequency area will follow. During the radio interface design, procedures for the improvement of radio link quality and transmission bit rate will be sought. Development of new algorithms based on the programmable radio concept and their implementation on the DSP level are planned. At the network level, new routing methods will be tested for different kinds of traffic with the help of the OPNET simulation tool. The access network will serve stationary and mobile users and will be based on the IP protocol stack. Efficient methods for resource and mobility management as well as dynamic radio channel allocation will also be investigated.




3311-04-855106 Razvoj raziskovalne infrastrukture centra odličnosti Informacijske in komunikacijske tehnologije (ICT), podprojekt Posodobitev infrastrukture skupine za verifikacijo na FERI (Development of research infrastructure of centre of excellence Information and communication technologies (ICT), subproject Enhancement of infrastructure of verification group at FERI)

Leader: Janez Bešter (Faculty of Electrical Engineering, Univesity of Ljubljana)

Participants: Prof. Dr. Zmago Brezočnik; Dr. Boštjan Vlaovič; Dr. Aleksander Vreže, Dr. Robert Meolic; Assoc. Prof. Dr. Tatjana Kapus; Filip Samo Balan, MSc;

Project partners: Faculty of Electrical Engineering, University of Ljubljana; Faculty of Computer and Information Sciences, University of Ljubljana; Faculty of Electrical Engineering and Computer Science, University of Maribor; SETCCE - Security Technology Competence Centre; Jožef Stefan Institute; Iskratel Ltd.;

Financed by: Ministry of Higher Education, Science and Technology of Republic of Slovenia, Iskratel Ltd., European Union

Duration: Oct. 2004 to Dec. 2006

The aim of this infrastructure development and research project, was enhancement of the infrastructure for the support of development and research project Correctness verification of communication system functioning, carried out within the framework of the Centre of excellence Information and communication technologies (ICT). The investment included purchase of a powerful multiprocessor server with accessories and of verification software, as well as adaptation of the premises of the verification group at the Faculty of Electrical Engineering and Computer Science.

Industrial project

SIP-FERI-2006 Nadgradnja protokola SIP (SIP Protocol Upgrade)

Leader: Dr. Boštjan Vlaovič (Faculty of Electrical Engineering and Computer Science)

EL - 14 Microcomputer Systems Laboratory

Participants: Peter Vicman, Dr. Aleksander Vreže, Prof. Dr. Zmago Brezočnik Project partners: Iskratel Ltd.

Financed by: Iskratel Ltd.


This project comprised research activities surrounding protocol SIP and upgrade of the existing protocol stack for SIP protocol. It was a continuation of contract SIP-FERI-2005. A detailed study of recent standards was followed by graduate upgrades of the coder and the decoder with the main objective of supporting all protocol messages and information elements. Additionally, protocol SIP was used on duplicated systems.

PUBLICATIONS

Tatjana Kapus, “Checking connectivity in mobile system ambients with the temporal logic of actions,” IEICE trans. fundam. electron. commun. comput. sci., Vol. E89-A, No. 11, pp. 3333-3340, 2006.

Robert Meolic, Tatjana Kapus, “Notes on specifying systems in EST,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 23-26.


Assoc. Prof. Dr. Tatjana Kapus: Programme committee member, international conference, 15th International Conference on Software Engineering and Data Engineering, Los Angeles, United States, July 6–8, 2006.

Dr. Boštjan Vlaovič: Programme committee member, international symposium, International Symposium on Telecommunications: Content and Networking, Ljubljana, Slovenia, Oct. 23–24, 2006.

Prof. Dr. Zmago Brezočnik: Bologna process- ECTS, workshop, organisation and implementation, Maribor, Slovenia, Nov. 30, 2006.


GUESTS AND VISITORS

Marina Bagić (Faculty of Electrical Engineering and Computing, University of Zagreb, Zagreb, Croatia):

Research in the area of fomal methods, postgraduate research work, Jan. 1–31, 2006.

EL - 16 Digital Signal Processing Laboratory

DIGITAL SIGNAL PROCESSING LABORATORY

Head:

Prof. Dr. Zdravko Kačič

Phone: +386 2 220 72 20


RESEARCH PROJECTS



GIS-TK Center odličnosti informacijsko komunikacijske tehnologije Govorne in slikovne tehnologije v informacijskih in telekomunikacijskih sistemih (Centre of excellence of information and communication technologies Speech and image technologies in information and telecommunication systems)

Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science)

Participants: Dr. Andrej Žgank, Dr. Bojan Kotnik, Asst. Prof. Dr. Matej Rojc Project partners: Faculty of Electrical Engineering, Univesity of Ljubljana, Alpineon

d.o.o., Iskratel Ltd., Faculty of Electrical Engineering and Computer Science

Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia, Iskratel Ltd., European Union

Within the framework of language technology evaluation environment development for evaluation of speech-driven next generation telecommunication services, an evaluation algorithm for the evaluation of autoattendant service was carried out and an analysis of the evaluation's results performed.

Digital Signal Processing Laboratory EL - 17

Industrial projects

A-MOD Razvoj postopkov akustičnega modeliranja v sistemu razpoznavanja govora delujočega na VOIP omrežju (Development of acoustic models for the ASR system working on VOIP networks)


Participants: Dr. Tomaž Rotovnik, Dr. Andrej Žgank, Dr. Bojan Kotnik Project partners: Iskratel Ltd.

Financed by: Slovenian Research Agency

The goal of the project is to develop algorithms for robust speech processing and to perform the analysis of acoustic models’ topologies to achieve the required speech recognition accuracy. In 2006 different topologies of acoustical models were developed and evaluated.


AWLSST Analysis of word length in spoken Slovenian texts

Leader: Dr. Darinka Verdonik (Faculty of Electrical Engineering and Computer Science), Peter Grzybek

Participants: Emmerich Kelih, Aleksander Friedl, Dr. Mirjam Sepesy Maučec Project partners: Karl Franzens Universität Graz, Institut fuer Slavistik

Financed by: Karl Franzens Universität Graz

The project is divided into two phases. The first one encompasses development of text corpus and the second, the analysis of the text.. The project will provide insight into the synergic functioning of the language as a dynamic system. Comparison of the results with the analysis of written texts will help to provide answers to the questions as how different the spoken and written texts are regarding their complexity and what are the theoretic models to statistically evaluating the frequency of word length in spoken texts.

COST Action 2102 Cross-modal analysis of verbal and non-verbal communication

Leader: Asst. Prof. Dr. Matej Rojc (Faculty of Electrical Engineering and Computer Science)

Financed by: European Union, Slovenian Research Agency

The objectives of the project are cross modal analysis of audio and video signals, data


analysis and search for correlation of features. The research also includes emotional speech analysis, cultural differences and socio-cultural variations, as well as using audio and video in the context of speech recognition and synthesis, data coding and work within the framework of MPEG7 standard.

ECESS European Centre of Excellence for Speech Synthesis (ECESS)


Project partners: NOKIA, Adam Mickiewicz University, UCL London, ATR, Kyoto, Middle East Technical University, Ankara, LAIP, University of Lausanne, Chinese Academy of Sciences, TU Dresden, Ludwig-Maximilians-Universität München, ICP, University of the Basque Country, Siemens, CSTR, University of Edinburgh, Universität Bonn

Financed by: Faculty of Electrical Engineering and Computer Science

The goal of the European Centre of Excellence for Speech Synthesis is to define recommendations for the development and validation of text-to-speech synthesis systems. The research work is carried out in the fields of defining standard language resources' definitions of multilingual text-to-speech systems and methodologies for their evaluation. In 2006, an acoustic processing module was developed and a TTS speech corpus defined that is compliant with the TC-STAR specifications.

MDIDiITS Multimedia data indexing and data mining in information and telecommunication systems

Leader: Prof. Dr. Zdravko Kačič (Faculty of Electrical Engineering and Computer Science), Jean-Francoise Bonastre (University of Avignon)

Participants: Dr. Andrej Žgank, Prof. Dr. Peter Kokol, Prof. Dr. Tatjana Welzer Družovec, Matej Mertik, Corinne Fredouille, Georges Linares, Asst. Prof. Dr. Boštjan Brumen, Dr. Tomaž Rotovnik, Marko Hölbl

Project partners: University of Avignon


The work encompasses co-operation in the developing automatic indexing of audiovisual data and data mining. The objective of the project is also to contribute to integration of developed data mining techniques into information and telecommunication systems. It will broaden the understanding of data mining and its implications in various fields, such as data security and quality. The aim is to promote sharing and dissemination of information and state-of-the-art on current data mining and knowledge discovery methods, and to use new processing and storage paradigm to support data and intensive processing. The goal is to


incorporate the research results into daily usage.

In the field of automatic multimedia content analysis, the main research work will be focused on automatic segmentation of audio signals, analysis of the langiuage dependencies of the applied methods, and evaluation of their accuracy.

For indexing the audio files we will also use text-mining techniques based on Porter's filtering method, and machine learning algorithms appropriate for the text mining such as support vector machines, Bayesian methods, and neural networks. All these are incorporated into the Multimetod environment developed at FERI.

In 2006 these activities were carried out within visits by researchers from both institutions over a duration of four weeks.



KORP-NET Oblikovanje slovenskega korpusnega omrežja (Development of Slovenian corpus network)


Project partners: Fakulteta za družbene vede, Univerza v Ljubljani, Inštitut Jožef Stefan, Univerza na Primorskem, Filozofska fakulteta, Univerza v Ljubljani

Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia

Duration: Oct. 2004 to Sept. 2006

The goal of the project was the development of a reference corpus, definition of the criteria for its balanced structure, as well as analysis of the modern Slovenian language's characteristics and communication environment. Also an analysis of the state-of-the-art in the field of language resources for the Slovenian language and the need for their creation was accomplished. Here, the basic goal was to link together the existing language resources and to find out priorities for further development of resources. In 2006 specifications of spoken and written language resources and criteria for corpus quality verification were defined.


Industrial project

COM-ASR Razvoj komercialnega ASR (ASR)


Participants: Matej Grašič, Dr. Tomaž Rotovnik, Dr. Bojan Kotnik, Dr. Andrej Žgank



Duration: Sept. 2005 to June 2006

The goal of the project was the development of an ASR system to be used in speech-driven teleservices developed within VoiceXML environment. In 2006 the multichannel system was developed and its accuracy evaluated.

IVR-ASR Medijski strežnik – IVR: Sistem avtomatskega razpoznavanja govora izoliranih besed (Media server – IVR: Isolated word speech recognition system)


Participants: Dr. Bojan Kotnik, Dr. Andrej Žgank, Dr. Vladimir Hozjan, Dr. Tomaž Rotovnik


Financed by: Iskratel Ltd., Slovenian Research Agency

Duration: July 2004 to June 2006

The goal of the project was the development of a multi-channel isolated word speech recognition system for the Slovenian language. The system will be used for the development of VoiceXML applications. In 2006 the evaluation of multichannel system was carried out.


EPIA Modification and Evaluation of Pitch Marking Algorithms



Participants: Dr. Bojan Kotnik Project partners: Siemens AG

Financed by: Siemens AG

Duration: Feb. to Dec. 2006

The goal of the project in 2006 was further development of pitch-detection and pitch-marking algorithms. Accuracy of the developed algorithms was evaluated at different noises and different signal/noise ratios.

PSA Pitch Synchronous Analysis





The goal of the project was the development of a speech analysis algorithm, using pitch-synchronous approach and annotation of speech database. In 2006 a pitch marking algorithm was evaluated using a hand-annotated speech database.

IHNE Inter Harmonic Noise Estimation





The goal of the project in 2006 was the development of an algorithm for inter-harmonic noise evaluation. Evaluation of the developed algorithm was carried out, based on the hand labelled speech database.


PUBLICATIONS

Vladimir Hozjan, Zdravko Kačič, “A rule-based emotion-dependent feature extraction method for emotion analysis from speech,” J. Acoust. Soc. Am., Vol. 119, Iss. 5, pp. 3109-3120, 2006.

Peter Rulić, Iztok Kramberger, Zdravko Kačič, “Razčlenjevanje barvne slike, zajete s splošnonamenskimi barvnimi kamerami,” Electrotechnical Review, Vol. 73, No. 2-3, pp. 117-124, 2006.

Mirjam Sepesy Maučec, Janez Brest, Zdravko Kačič, “Statistical alignment models in machine translation from Slovenian to English,” Electrotechnical Review, Vol. 73, No. 5, pp. 273-278, 2006.

Tomaž Rotovnik, “Notranje vodenje in prevzemanje tveganja,” Banč. vestn., Vol. 55, no. 9, pp. 45-47, Sep. 2006.

Matej Rojc, Zdravko Kačič, “Sinteza govora v avtomatiziranih storitvah konvergenčnih omrežij,” SRC info, no. 47, pp. 27-30, 2006.

Janez Brest, Mirjam Sepesy Maučec, Borko Bošković, Sašo Greiner, Viljem Žumer, “Optimizacija z omejitvami: eksperimentalni rezultati s samo-prilagodljivim algoritmom diferencialne evolucije,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 91-94.

Janez Brest, Viljem Žumer, Mirjam Sepesy Maučec, “Control parameters in self-adaptive differential evolution,” Bioinspired optimization methods and their applications: proceedings of the Second International Conference on Bioinspired Optimization Methods and their Applications - BIOMA 2006, Ljubljana, Slovenia, Oct. 2006, pp. 35-44.

Janez Brest, Viljem Žumer, Mirjam Sepesy Maučec, “Self-adaptive differential evolution algorithm in constrained real-parameter optimization,” 2006 IEEE International Conference on Fuzzy Systems, 2006 IEEE Congress on Evolutionary Computation, 2006 IEEE World Congress on Computational Intelligence, Vancouver, Canada, Jul. 2006, pp. 919-926.

Frank Diehl, Asuncion Moreno, Andrej Žgank, Zdravko Kačič, “Extended use of local codebook features for continuous density hidden Markov models,” Advances in speech technology: proceedings, Maribor, Slovenia, 2006, pp. 105-116.

Bojan Kotnik, “Epoch determination algorithm for pitch synchronous speech processing,” Advances in speech technology: proceedings, Maribor, Slovenia, 2006, pp. 127-139.


Bojan Kotnik, Harald Höge, Zdravko Kačič, “Evaluation of pitch detection algorithms in adverse conditions,” Speech Prosody: 3rd international conference, Dresden, Germany, May 2006.

Matej Rojc, “Improving the fitting accuracy of reconstructed F0 contours using tilt intonation model,” Advances in speech technology: proceedings, Maribor, Slovenia, 2006, pp. 21-26.

Tomaž Rotovnik, “Large vocabulary continuous speech recognition with subword units stem - ending,” Advances in speech technology: proceedings, Maribor, Slovenia, 2006, pp. 147-157.

Mirjam Sepesy Maučec, Janez Brest, Zdravko Kačič, “Slovenian to english machine translation using corpora of different sizes and morpho-syntactic information,” Jezikovne tehnologije: zbornik 9. mednarodne multikonference Informacijska družba IS 2006, Ljubljana, Slovenia, Oct. 2006, pp. 222-225.

Mirjam Sepesy Maučec, Zdravko Kačič, “Statistical machine translation using the IJS-ELAN corpus,” 5th international conference on language resources and evaluation, Genova, Italy, May 2006, pp. 87-90.

Darinka Verdonik, Matej Rojc, “Are you ready for a call? - Spontaneous conversations in tourism for speech-to-speech translation systems,” 5th International Conference on Language Resources and Evaluation, Genova, Italy, May 2006.

Damjan Vlaj, “Comparison of de-correlating methods for GMM based VAD algorithm,” Advances in speech technology: proceedings, Maribor, Slovenia, 2006, pp. 97-104.

Andrej Žgank, “Slovenian BNSI broadcast news text corpus,” Advances in speech technology: proceedings, Maribor, Slovenia, 2006, pp. 75-82.

Andrej Žgank, Zdravko Kačič, “Conversion from phoneme based to grapheme based acoustic models for speech recognition,” INTERSPEECH 2006 - ICSLP: ninth international conference on spoken language processing, Pittsburgh, Pensylvania, USA, Sep. 2006, pp. 1587-1590.

Andrej Žgank, Tomaž Rotovnik, Matej Grašič, Marko Kos, Damjan Vlaj, Zdravko Kačič, “SloParl - Slovenian parlamentary speech and text corpus for large vocabulary continuous speech recognition,” INTERSPEECH 2006 - ICSLP: ninth international conference on spoken language processing, Pittsburgh, Pensylvania, USA, Sep. 2006, pp. 197-200.

Andrej Žgank, Tomaž Rotovnik, Matej Grašič, Marko Kos, Damjan Vlaj, Zdravko Kačič, “Slovenska govorna in tekstovna baza parlamentarnih razprav za avtomatsko razpoznavanje govora,” Jezikovne tehnologije: zbornik 9. mednarodne multikonference Informacijska družba IS 2006, Ljubljana, Slovenia, Oct. 2006, pp. 115-118.


Andrej Žgank, Tomaž Rotovnik, Mirjam Sepesy Maučec, Zdravko Kačič, “Osnovna zgradba razpoznavalnika slovenskega tekočega govora UMB Broadcast News,” Jezikovne tehnologije: zbornik 9. mednarodne multikonference Informacijska družba IS 2006, Ljubljana, Slovenia, Oct. 2006, pp. 99-118.

Andrej Žgank, Darinka Verdonik, Aleksandra Zögling Markuš, Zdravko Kačič, “SINOD - Slovenian non-native speech database,” 5th International Conference on Language Resources and Evaluation, Genova, Italy, May 2006.

Iztok Kramberger, Zdravko Kačič, “Analiza streoskopskega slikovnega toka v okolju multimodalnih komunikacijskih vmesnikov,” Računalniška obdelava slik in njena uporaba v Sloveniji 2006: zbornik strokovne konference, ROSUS 2006, Maribor, Slovenia, Mar. 2006, pp. 41-47.

Tomaž Rotovnik, Andrej Žgank, Matej Grašič, Bojan Kotnik, Bojan Imperl, Zdravko Kačič, “Voice driven auto attendant system - a pilot project,” Content and networking: proceedings of the International Symposium on Telecommunications [also] VITEL 2006, Ljubljana, Slovenia, Oct. 2006.

Mirjam Sepesy Maučec, “Babilon - sistem simultanega prevajanja govora,” Pomurska akademija Pomurju: zbornik prispevkov, 2006, Slovenia, pp. 40-41.


Marko Kos, Zdravko Kačič, Tomaž Rotovnik, Mirjam Sepesy Maučec, Andrej Žgank, Bojan Kotnik, Matej Rojc, Matej Grašič, Aleksandra Zögling Markuš: “Govorne tehnologije v sodobnih komunikacijskih sistemih in omrežjih,” presentation on the international business and educational event HEVREKA 05, Ljubljana, Slovenia, Oct. 24, 2006.

Darinka Verdonik: “Govorne tehnologije v sodobnih komunikacijskih sistemih in omrežjih,” presentation on the international business and educational event HEVREKA 05, Ljubljana, Slovenia, Oct. 24, 2006.

Zdravko Kačič, Bojan Kotnik, Andrej Žgank, Tomaž Rotovnik: “Virtualna voditeljica Maja,” presentation on the international business and educational event HEVREKA 06, Ljubljana, Slovenia, Oct. 24, 2006.

Darinka Verdonik: “Language technologies - linguistics in the computer world : ein Gastvortrag am Institut für Slawistik der Karl-Franzens-Universität,” invited lecture, Graz, Austria, Dec. 15, 2006.



Prof. Dr. Zdravko Kačič: Programme committee member, conference, 5th biennial conference on Language resources and Evaluation (LREC), Genova, Italy, May 24–26, 2006.

Dr. Andrej Žgank: Programme committee member, conference, The Ninth International Conference on Spoken Language Processing, Pittsburgh, United States, Sept. 17–21, 2006.

Prof. Dr. Zdravko Kačič: Advances in Speech Technology AST 2006, workshop, organisation and implementation, Maribor, Slovenia, July 6–7, 2006.

Prof. Dr. Zdravko Kačič: European Centre of Excellence for Speech Synthesis, meeting, organisation and implementation, Maribor, Slovenia, July 5, 2006.

Prof. Dr. Zdravko Kačič: Reviewer for International Journal of Speech Technology, associate editor.

Dr. Bojan Kotnik: Reviewer for EURASIP Signal Processing.

Asst. Prof. Dr. Matej Rojc: Reviewer for Computer Speech and Language.


Prof. Dr. Zdravko Kačič, Asst. Prof. Dr. Matej Rojc:

Meeting participation on ECESS Meeting, project meeting participation, Berlin, Germany, Jan. 19–20, 2006.

Prof. Dr. Zdravko Kačič, Dr. Mirjam Sepesy Maučec, Dr. Darinka Verdonik, Dr. Andrej Žgank:

Participation at SloFon 1, meeting participation, Ljubljana, Slovenia, Apr. 20–22, 2006.

Dr. Bojan Kotnik: Participation at the 3rd International Conference Speech Prosody 2006, meeting participation, Dresden, Germany, May 2–5, 2006.


Prof. Dr. Zdravko Kačič, Dr. Andrej Žgank:

Participation at the LREC 2006, visit, Genova, Italy, May 22–28, 2006.

Dr. Mirjam Sepesy Maučec: Participation at the SALTMIL Workshop on Minority Languages satellite conference of the LREC 2006, meeting participation, Genova, Italy, May 23, 2006.

Dr. Darinka Verdonik: Participation at the 18th Euro-International Systemic Functional Linguistics Congress and Workshop, meeting participation, Gorizia, Italy, July 19–22, 2006.

Dr. Andrej Žgank: Participation at the Interspeech 2006, meeting participation, Pittsburgh, United States, Sept. 17–21, 2006.

Dr. Darinka Verdonik: Participation at the project meeting Analysis of word length in spoken Slovenian texts, project meeting participation, Graz, Austria, Sept. 21, 2006.

Dr. Darinka Verdonik: Participation at the Slovenian linguistic conference, meeting participation, Zagreb, Croatia, Oct. 5–6, 2006.

Dr. Tomaž Rotovnik, Dr. Mirjam Sepesy Maučec, Dr. Andrej Žgank:

Participation at conference Jezikovne tehnologije 2006, meeting participation, Ljubljana, Slovenia, Oct. 9–10, 2006.

Prof. Dr. Zdravko Kačič, Dr. Andrej Žgank:

Participation at VITEL 2006, meeting participation, Ljubljana, Slovenia, Oct. 23–24, 2006.

Asst. Prof. Dr. Matej Rojc: Participation in the 1st Management Committee Meeting COST 2102, project meeting participation, Bruselj, Belgium, Nov. 30 to Dec. 3, 2006.

Dr. Darinka Verdonik: Participation at the project meeting Analysis of word length in spoken Slovenian texts, project meeting participation, Graz, Austria, Dec. 15, 2006.

Dr. Andrej Žgank: Consortium meeting – preparation of FP7 project proposal, project meeting participation,


Aschaffenburg, Germany, Dec. 15, 2006.

GUESTS AND VISITORS

Rüdiger Hoffmann (TU Dresden, Dresden, Germany), Hans G. Tillmann (Ludwig-Maximilians-Universität München, München, Germany), Harald Höege (Siemens AG, Munich, Germany):

Co-operation within European Centre of Excellence, research work, July 5, 2006.

Georges Linares (University of Avignon, Avignon, France):

Research work in the frame of the Bilateral collaboration, research work, Dec. 18–22, 2006.

Institute of Power Engineering PE - 1

INSTITUTE OF POWER ENGINEERING

Head:

Prof. Dr. Ivan Zagradišnik

Phone: +386 2 220 70 40


URL: http://www.me.feri.uni-mb.si/

The research work at the Institute of Power Engineering is divided into three main areas: electromagnetic devices; production, transmission and distribution of electrical energy; and power system control. The research on electromagnetic devices is focused on numerical methods. The research on electrical energy deals mainly with optimisation processes, reliability, and the quality of electrical energy. Modernising control of power systems is the subject of the third topic.

The institute of Power Engineering co-operates with many universities and institutes: University Ljubljana, Faculty of Electrical Engineering - Slovenia; University Zagreb, Faculty of Electrical Engineering and Computer Science - Croatia; University J. J. Strossmayer Osijek, Faculty of Electrical Engineering - Croatia; University Kragujevac - Serbia; University Sts. Cyril&Methodious Skopje, Faculty of Electrical Engineering - Macedonia; University Tuzla, Faculty of Electrical Engineering - Bosnia and Hercegovina; Technische Universität Graz, Elektrotechnische fakultet - Austria; Universität Johannes Kepler Linz, Institut für elektrische Maschinen und Regelungstechnik - Austria; Technical University of Budapest, Institute for electric machines - Hungary; Universität Paderboren - Germany; University D'Artois - France; Katolieke Universiteit Leuven, Institute for electric machines and drives - Belgium; Technische Universität Achen - Germany; Northeastern University Boston - USA; Association of EU Universities Dortmund - Germany; Physikalisch-Technische Bundesanstalt Braunschweig - Germany; Institute of Electrical Engineering Warsava - Polska; University Lodz, Institute of Mechatronics and

PE - 2 Institute of Power Engineering

Information Systems - Polska; Instituto Nacionale Galileo Ferraris Torino - Italia; Doshisha University Kyoto - Japon.

Electrical Machines

Laboratory Head:


Power Engineering Laboratory

Head: Prof. Dr. Jože Voršič

Electromechanical Systems Control

Laboratory Head:

Prof. Dr. Bojan Grčar

Fundamentals and Theory of Electrotechnics

Laboratory Head:

Prof. Dr. Igor Tičar

Institute of Power Engineering Head:


Applied Electromagnetics

Laboratory Head:

Prof. Dr. Mladen Trlep

Institute of Power Engineering PE - 3

Electrical Machines Laboratory

Head: Prof. Dr. Ivan Zagradišnik

Employees: Florijan Leskovar, Eng.; Miralem Hadžiselimović, BSc

Power Engineering Laboratory

Head: Prof. Dr. Jože Voršič

Employees: Assoc. Prof. Dr. Gorazd Štumberger; Prof. Dr. Jože Pihler; Andrej Hanžič MSc; Janez Ribič, BSc; Marjan Stegne, BSc; Jurček Voh; Andrej Korak, MSc

Electromechanical System Control Laboratory

Head: Prof. Dr. Bojan Grčar

Employees: Prof. Dr. Drago Dolinar; Asst. Prof. Dr. Jožef Ritonja; Asst. Prof. Dr. Boštjan Polajžer; Matej Toman, BSc; Zlatko Strelec

Fundamentals and Theory of Electrotechnics Laboratory

Head: Prof. Dr. Igor Tičar

Employees: Andrej Orgulan, MSc; Dr. Peter Kitak, BSc; Andrej Stermecki, BSc

Applied Electromagnetics Laboratory

Head: Prof. Dr. Mladen Trlep

Employees: Prof. Dr. Anton Hamler; Asst. Prof. Dr. Marko Jesenik; Asst. Prof. Dr. Bojan Štumberger; Viktor Goričan, BSc; Dr. Gorazd Hrovat, BSc; Anton Habjanič, BSc; Matjaž Gaber, BSc

PE - 4 Electrical Machines Laboratory

ELECTRICAL MACHINES LABORATORY

Head:


Phone: +386 2 220 70 40


RESEARCH PROJECTS


Industrial projects

LABES-BV-02_2003 Analiza segrevanj eksplozijsko varnih motorjev (Heating analysis of explosion proof electric motors)

Leader: Prof. Dr. Ivan Zagradišnik (Faculty of Electrical Engineering and Computer Science)

Participants: Miralem Hadžiselimovič, Mitja Hribernik, Tine Marčič

Financed by: Bartec Varnost, d. o. o.

We have measured, analysed and calculated the three-phase explosive safety electric motors for the Bartec Varnost company Zagorje.

LABES-MMB-01_2003

Analiza prekinitev napajalnih napetosti trifaznega transformatorja v vezavah Yzn5 in Dyn5 (Analysis of Power Failures for Three Phase Transformer connected in Yzn5 and Dyn5)


Participants: Mitja Hribernik, Miralem Hadžiselimovič Project partners: MMB s.p.

Financed by: MMB s.p.

We analyzed the power failures of three phase transformer connected in Yzn5 and Dyn5 for the MMB s.p. company.

Electrical Machines Laboratory PE - 5

LABES-RO-01_2006 Prenova ventilatorskih motorjev tip R09 (Fan motors renovation - type R09)


Participants: Tine Marčič Project partners: Tehnološki center za električne stroje, Hidria Rotomatika Fans

Financed by: Hidria Rotomatika Fans

For the Rotomatika fans Spodnja Idrija company we cooperated in renovating three and single phase induction fans' drive motors with outer rotor type R09 4M H35. The main goal of this renovation is the reconstruction of R09 motors, so that the fans' motors will be competitive on the world market where Rotomatika sells the majority of fans. The main goal of the renovation is the enlargement of the efficiency, first of all, of the motors (together with fans). The motors have, at the moment, an efficiency of 48 %. After the renovation they should have the efficiency of 58 %, which, at the moment, is the efficiency of comparable European producers.


LABES-OS-01_2006 Measurements of bearing currents


Participants: Željko Hederić, Stjepan Štefanko, Miralem Hadžiselimovič Project partners: Elektrotehnički fakultet Osijek

Financed by: Aklimat, d. o. o., Elektrotehnički fakultet Osijek

Development of experimental methods for measuring shaft and bearing currents in three-phase induction motors supplied by a controller with a Rogowsky coil.



Industrial project

AE BS-2 Prenos električne moči v rotirajoče telo na osnovi koncepta generatorja na pogonski gredi (Electric power transfer in the rotating body on the basis of electrical generator)

Leader: Asst. Prof. Dr. Bojan Štumberger (Faculty of Electrical Engineering and Computer Science)

Participants: Asst. Prof. Dr. Marko Jesenik, Viktor Goričan, Assoc. Prof. Dr. Gorazd Štumberger, Miralem Hadžiselimovič, Prof. Dr. Anton Hamler, Prof. Dr. Mladen Trlep

Project partners: KolektorGroup d.o.o., Tehnološki center za električne stroje

Financed by: KolektorGroup, d. o. o., Tehnološki center za električne stroje


The object of the work was a feasibility study of the transfer of electric power in a rotating body, on the basis of an electrical generator mounted on the drive shaft. Different magnetic structures of an electric generator were analyzed in accordance with the restrictions and demands of a power electronic converter, which will be mounted on the generator's terminals.

PUBLICATIONS

Miralem Hadžiselimović, Gorazd Štumberger, Tine Marčič, Bojan Štumberger, Ivan Zagradišnik, “Measurement of magnetic nonlinear characteristics of DC electromagnetic brake,” Prz. Elektrotech., Vol. 82, no. 12, pp. 76-79, 2006.

Tine Marčič, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “Vpliv modulacijske frekvence na izgube elektromotornega pogona, harmonsko popačenje toka in temperaturo asinhronskega motorja,” Electrotechnical Review, Vol. 73, No. 2-3, pp. 125-130, 2006.

Andrej Stermecki, Igor Tičar, Ivan Zagradišnik, Peter Kitak, “FEM-based design of an induction motor's part winding to reduce the starting current,” IEEE trans. magn., Vol. 42, No. 4, pp. 1299-1302, Apr. 2006.


Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Mladen Trlep, “Performance comparison of three-phase flux reversal permanent magnet motors with surface and inset permanent magnets,” Prz. Elektrotech., Vol. 82, No. 12, pp. 107-110, 2006.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, Anton Hamler, Mladen Trlep, “Permanent magnet synchronous motor with exterior-rotor: distributed or concentrated windings - motor performance comparison,” Compel, Vol. 25, No. 3, pp. 721-726, 2006.

Ivan Zagradišnik, Tine Marčič, Miralem Hadžiselimović, “Analysis of single-phase induction motor with permanent split capacitor and closed rotor slots,” Prz. Elektrotech., Vol. 82, No. 5, pp. 33-35, 2006.

Miralem Hadžiselimović, Tine Marčič, Bojan Štumberger, Gorazd Štumberger, Ivan Zagradišnik, “Analytical and numerical analysis of magnetic field in a single - phase transformer,” Book of digests, First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 29-30.

Tine Marčič, Miralem Hadžiselimović, Ivan Zagradišnik, Matej Gajzer, “Usage of totaly enclosed fan-cooled induction motors in ventilator drives,” XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2005, pp. 157-158.

Tine Marčič, Miralem Hadžiselimović, Ivan Zagradišnik, Bojan Štumberger, “A study of magnetic flux density harmonics in a three phase squirrel-cage induction machine at ideal no-load condition,” Electromagnetic fields in mechatronics, electrical and electronic engineering: proceedings of ISEF'05 (Studies in applied electromagnetics and mechanics, vol. 27), 2006, pp. 396-401.

Tine Marčič, Bojan Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “An induction motor's magnetic field analysis and determination of its iron losses,” Book of digests, First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 69-70.

Tine Marčič, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “Analysis of induction motor drive losses in the field-weakening region,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1173-1178.

Silvo Ropoša, Miralem Hadžiselimović, “Meritev vrtljajev v sesalno enoto integriranega univerzalnega motorja,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 391-394.


Silvo Ropoša, Ivan Zagradišnik, Bojan Štumberger, Miralem Hadžiselimović, “Simplified approach for the universal motor performance calculation,” XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 37-38.

Andrej Stermecki, Igor Tičar, Ivan Zagradišnik, Peter Kitak, “FEM analysis of a compressor induction motor drive's starting characteristics,” IEEE CEFC 2006: digest book, The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 305.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Anton Hamler, Mladen Trlep, Viktor Goričan, Marko Jesenik, “High-performance permanent magnet brushless motor with balanced concentrated windings and similar slot and pole numbers,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e829-e831.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Mladen Trlep, Anton Hamler, “Permanent magnet brushless DC motor; integrated motor drive electrical subsystem simulation,” Book of digests, First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 13-14.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “Torque ripple reduction in exterior-rotor permanent magnet synchronous motor,” Proceedings of the 17th International Symposium on Soft Magnetic Material, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e826-e828.

Gorazd Štumberger, Miralem Hadžiselimović, Bojan Štumberger, Damijan Miljavec, Drago Dolinar, Ivan Zagradišnik, “Comparison of capabilities of reluctance synchronous motor and induction motor,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, vol. 304, issue 2, 2006), Vol. 304, iss. 2, pp. e835-e837.

Ivan Zagradišnik, Miralem Hadžiselimović, Tine Marčič, Bojan Štumberger, Gorazd Štumberger, “Heating analysis for explosion proof protected motors fed from 400V/50HZ and 460V/60HZ supply,” Book of digests, First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 71-72.

Miralem Hadžiselimović, Bojan Štumberger, “Določitev karakteristike vrtilnega momenta trifaznega asinhronskega motorja s pomočjo krožnega diagrama,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 379-382.


Miralem Hadžiselimović, Bojan Štumberger, “Določitev mehanske časovne konstante enosmernega servomotorja s trajnimi magneti na statorju,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 383-386.

Miralem Hadžiselimović, Bojan Štumberger, “Določitev vzbujalnega toka sinhronskega generatorja s pomočjo ASA diagrama,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 423-426.

Miralem Hadžiselimović, Bojan Štumberger, “Meritev magnetnega polja in obremenilne karakteristike enofaznega asinhronskega motorja z zasenčenimi poli,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 387-390.

Miralem Hadžiselimović, Gorazd Štumberger, Tine Marčič, Bojan Štumberger, Ivan Zagradišnik, “Measurement of magnetic nonlinear characteristics of DC electromagnetic brake,” Zastosowania elektromagnetyzmu w nowoczesnych technikah i informatyce: XVI sympozjum środowiskowe, Wisła, Poland, 2006, pp. 111-115.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Mladen Trlep, “Performance comparison of three-phase flux reversal permanent magnet motors with surface and inset permanent magnets,” Zastosowania elektromagnetyzmu w nowoczesnych technikah i informatyce: XVI sympozjum środowiskowe, Wisła, Poland, 2006, pp. 189-191.


Miralem Hadžiselimovič: Participation at the III Joint European Magnetic Symposia, meeting participation, San Sebastian, Spain, June 26–30, 2006.

Prof. Dr. Ivan Zagradišnik: Participation at the 9th international conference OIPE 2006, visit, Napoli, Italy, Sept. 13–15, 2006.

Miralem Hadžiselimovič: Participation at the scientific meeting of Polish society of applied electromagnetics, meeting participation, Wisla, Poland, Sept. 25–27, 2006.

GUESTS AND VISITORS

Željko Hederić Measurements and calculations of bearing currents


(Elektrotehnički fakultet Osijek, Osijek, Croatia):

in three phase induction motors, postgraduate research work, Oct. 1 to Dec. 23, 2006.

Power Engineering Laboratory PE - 11

POWER ENGINEERING LABORATORY

Head:

Prof. Dr. Jože Voršič

Phone: +386 2 220 70 50


RESEARCH PROJECTS


Applied projects

L2-7560-1792 Načrtovanje in vodenje naprednega sistema za točkasto varjenje (Design and control of an advanced spot welding system)

Leader: Assoc. Prof. Dr. Gorazd Štumberger (Faculty of Electrical Engineering and Computer Science)

Participants: Dr. Boštjan Polajžer; Prof. Dr. Drago Dolinar; Tine Marčič; Matej Gajzer, MSc; Matej Toman; Peter Virtič; Zlatko Strelec; Dr. Oto Težak; Andrej Hanžič, MSc

Project partners: Indramat elektromotorji, Proizvodnja električnih motorjev, d.o.o., Tehnološki center za električne stroje

Financed by: Indramat elektromotorji, Proizvodnja električnih motorjev, d. o. o., Slovenian Research Agency

The system of spot-welding is a complex electromagnetic device composed of numerous elements. Some elements dominantly influence the reliability of operation under prescribed specifications which, consequently, means that there exists the possibility considerably increasing the system's performances. The existing transformer is oversized. The design of an advanced adaptive control for a power-supply inverter will enable compensation of flux density DC component in the transformer's iron core, which will reduce the dimensions of the transformer considerably.

The goal of the project is to find an optimal transformer design and active control algorithm, which should together lead to transformer reduction with prevention of the overload

PE - 12 Power Engineering Laboratory

conditions on the primary, at the same time. To reach this goal, analytical and experimental methods will be employed. The optimal transformer design and appropriate control of the power supply inverter will be determined by differential evolution – a stochastic search algorithm.

L2-6385-0796 Raziskave vplivov na povečanje izklopne zmogljivosti plinskega odvodnika (Influence research on increasing disconnection ability of gas arrester)


Participants: Andrej Hanžič, MSc; Assoc. Prof. Dr. Jože Pihler; Marjan Stegne Project partners: Iskra Zaščite

Financed by: Iskra Zaščite, Ministry of Education, Science and Sport of the Republic of Slovenia

This work deals with a modern application of overvoltage protection in low voltage networks. The basic intent of the work is analysing an integrated protection device composed of several protection elements. This is so-called combined overvoltage protection or protection modules composed of resistors, varistors, and gas arresters. The optimal and efficient operation of a protection device can be obtained with an adequate combination and dimensioning of separate protection elements. It is suitable to create a mathematical model such as a protection device with the help of an adequate program tool that can verify the simulations of an elaborated properties model and, therefore, a quickly and practical solution can be found.

In the year 2006 we finished a mathematical model of an integrated overvoltage protection in low voltage power network and by doing this we supplemented a gas arrester model. Furthermore we gauged both models by measured values obtained real elements of integrated overvoltage protection. We measured these values at the ICEM laboratory regarding ISKRA Zaščite elements and other producer protection elements. We had problems with the non-operation of some protection elements under high pretension test conditions.

We have successfully confirmed these computing models and these can be a basis for further research work in this area.



VNDSVS Vetrne naprave z difuzorjem v SV Sloveniji (Wind devices with diffusor in NE Slovenia)


Participants: Andrej Korak; Janez Ribič; Vincenc Butala; Andrej Hanžič, MSc Project partners: Faculty of Mechanical Engineering, University of Ljubljana, Faculty

of Electrical Engineering, Univesity of Ljubljana

Financed by: Grozd Ure in OVE

The basis for the project is the commercialisation of an already developed product. Technical development in the field of wind turbines goes in two directions. The first direction represents so-called conventional wind turbines – with three-bladed rotors. The other direction represents diffuser augmented wind turbines, where the rotor is surrounded by a coat in the form of a widened tube. The latter type of wind turbine has much better efficiency at low wind speed, compared to the conventional type. On the basis of computations, the first Slovenian prototype of a diffuser-augmented wind turbine will be made. The prototype of the wind turbine will be made on the basis of the project's documentation and SWOT analysis of the product. The prototype will be used for measurement of the wind turbines' electrical parameters in various operating regimes and for changing electrical load. The project enables the largest Slovenian electricity generator HSE to enter the area of planning large wind-turbines and, eventually, to sell these technologies on the energy market as a separate consortium.

Solarna elektrarna Elektrarna na solarno energijo (Solar Power Plant)


Participants: Kristijan Brecl; Janez Krč; Jurček Voh; Andrej Hanžič, MSc; Marko Topič

Project partners: Faculty of Mechanical Engineering, University of Ljubljana, Faculty of Electrical Engineering, Univesity of Ljubljana

Financed by: Grozd Ure in OVE

Storing electricity has presented a problem since the very beginning of electrification and electricity generation. Therefore, electricity should be used immediately, without intermediate storage. In addition to this, PV systems without electricity storage cannot be sufficient for a normal supply to consumers, especially due to the low efficiency of solar cells plus daily and annual variations in solar insolation. The problem of storing and supplying electricity can be


solved by a parallel connection of the system with the electric network. In this way the use of storage batteries is avoided, which represents an advantage in the price of the PV system, its life expectancy and in reducing environmental pollution. The work will be done in the field of following the PV cell's characteristics at various levels of insolation and adapting the load, all with the purpose of exploiting available solar radiation to the maximum possible extent. To achieve this it would be necessary to change the load's resistance which is, of course impossible, since it is given (e.g. DA/AC converter, storage battery). The problem can be solved with an additional DC converter, having a variable conduction factor. This measure can lead to a 200% to 300% increase in efficiency at the low-level of PV cell's irradiation. Since DC/AC converters with the integrated adaptation of voltage to load are not yet commercially available, the task of our project team is to develop a prototype of such a converter. The basic objective is to erect a small PV power plant for the purpose of supplying electricity to consumers. Since the system will be controlled and the acquisition of measurement data will be performed through intranet connection of the controller and analogue process unit for data acquisition, it will enable long-term monitoring of PV system's operation for the purpose of further research work and parallel operation of the system with a low-voltage electric network.

Industrial projects

RMOAMPO Računalniški modeli za opravljanje analiz meritev na prenapetostnih odvodnikih (Computer models for analysing overvoltage arrestor measurements)

Leader: Assoc. Prof. Dr. Jože Pihler (Faculty of Electrical Engineering and Computer Science)

Participants: Darko Koritnik, MSc; Marjan Stegne; Janez Ribič Project partners: ICEM-TC, Iskra Zaščite

Financed by: Iskra Zaščite, Ministry of Economics of the Republic of Slovenia

The research and development tests on low and middle-voltage overvoltage arresters were performed at the ICEM-TC laboratory. ICEM-TC and UM FERI are cooperating with ISKRA-ZAŠČITE for which we perform the majority of these tests, and also in the research area. For this reason we have created a mathematical model in a different program tool from which we were able to implement preparations for research tests and perform test analyses. We have created a regression procedure for the arrangement of measured results, and have compared model's simulations results with the measured values.


APL Akreditacija preskusnega laboratorija (Accreditation of testing laboratory)


Participants: Darko Koritnik, MSc; Marjan Stegne; Lidija Korpar Koritnik Project partners: ICEM-TC

Financed by: Ministry of Economics of the Republic of Slovenia, ICEM-TC

In the year 2006, quality system documentation, mastership of documentation and test implementations were performed.

UIUN Ugotavljanje izvorov upadov napetosti (Determining Origins of Voltage Sags)


Participants: Assoc. Prof. Dr. Jože Pihler; Prof. Dr. Jože Voršič; Jurček Voh; Matej Toman; Zlatko Strelec; Marjan Stegne; Dr. Boštjan Polajžer; Andrej Korak; Andrej Hanžič, MSc; Prof. Dr. Drago Dolinar; Klemen Deželak; Janez Ribič

Project partners: Gospodarsko interesno združenje distribucije električne energije

Financed by: Elektro Maribor, d. o. o., ELEKTRO PRIMORSKA, Javno podjetje za distribucijo električne energije, d. d., Elektro Ljubljana, d. d., ELEKTRO CELJE, Javno podjetje za distribucijo električne energije, Elektro Gorenjska, javno podjetje za distribucijo električne energije, d. d.

Voltage sags that appear in distribution networks have different origins. They can be caused by different events that appear within the distribution network or in high voltage transmission networks. Transmission networks and distribution networks are normally linked by a transformer. The aim of this study is to find reliable tools for determining the origins of voltage drops, based on current and voltage measurements performed on the transformer terminals connected to the distribution network.

AUNSNNZM Analiza upadov napetosti na srednje napetostnem nivoju zaradi motenj v 110 kV omrežju in SN omrežju (Voltage dip analysis at the medium voltage level due to disturbance in 110 kV system and MV system)

Leader: Prof. Dr. Jože Voršič (Faculty of Electrical Engineering and


Computer Science) Participants: Andrej Hanžič, MSc; Andrej Korak; Darko Koritnik, MSc; Assoc.

Prof. Dr. Jože Pihler; Janez Ribič; Marjan Stegne; Assoc. Prof. Dr. Gorazd Štumberger; Jurček Voh; Klemen Deželak


Financed by: ELEKTRO CELJE, Javno podjetje za distribucijo električne energije, Elektro Maribor, d. o. o., ELEKTRO PRIMORSKA, Javno podjetje za distribucijo električne energije, d. d., Elektro Ljubljana, d. d., Elektro Gorenjska, javno podjetje za distribucijo električne energije, d. d.

The problem of electricity quality is an urgent matter for companies distributing electricity due to compensations, which will gradually be introduced in this area. In this respect, the impact of disturbance, which appears in 110 kV systems due to incidents (malfunctions, switching manipulations, as well as the opening and closing of larger users), on voltage dips and electricity quality in MV systems is of crucial importance for companies distributing electricity. The above mentioned incidents in 110 kV systems may result in disturbance and the power failure of sensitive users in MV systems, which could cause extensive damage.

Within the framework of the study we carried out an analysis of the legislation within this field and an analysis of the current condition in the world. A dynamic model of the connected systems was constructed, enabling an analysis of the impact of disturbance (incidents) arising in 110 kV systems, on voltage dips and electricity quality in MV systems from a physical and legislative viewpoint.

Within the framework of the study, in cooperation with a fund provider in each distributional company’s system, one distribution transformer substation (DTS) was selected, for which an analysis of the impact of conventional incidents in a conventional point of the110 kV system, on the medium voltage system, was carried out. The results of the analysis showed sensitivity of the selected DTS to incidents in the 110 kV system and the suitability of the DTS for the connection of highly sensitive users.

VMEJRO Vključevanje majhnih elektrarn v javna razdeljevalna omrežja (Integration of small power station into public distributional systems)


Participants: Andrej Korak; Darko Koritnik, MSc; Viljem Muzek; Assoc. Prof. Dr. Jože Pihler; Silvo Ropoša; Janez Ribič; Marjan Stegne; Andrej Hanžič, MSc; Jurček Voh; Assoc. Prof. Dr. Gorazd Štumberger


Financed by: Elektro Maribor, d. o. o., ELEKTRO CELJE, Javno podjetje za distribucijo električne energije, Elektro Gorenjska, javno podjetje za


distribucijo električne energije, d. d., Elektro Ljubljana, d. d., ELEKTRO PRIMORSKA, Javno podjetje za distribucijo električne energije, d. d.

The need for both power supply and accessibility of technologies enables the usage of small and micro energy converters in public systems on a larger scale. Their usage and integration into public distribution companies, has at the level of standardization, already been examined to a certain extent. There has been no concrete guidance for the distribution companies at the level of regulations in this area, so far. This concerns low power generators which principally use gas, hydro potential, solar and wind energy, as energy products.

Together with technical measures and restrictions, in the process of connecting these energy converters, there is a need for considering their operational features and the reaction of the system to the converters, as well as the existing technical regulation in our country.

This study discusses the starting points for the connection and parallel operation of micro energy converters within public low-voltage distribution systems. The starting points are designed on the basis of solving integration and operation cases regarding such devices in Europe, and also in some cases in the United States, Canada, Japan and (rarely) in Slovenia.

VČHKES Študija za izvedbo daljnovodne povezave ČHE Kozjak – RTP Maribor (Study of ČHE Kozjak - RTP Maribor powerline connection)


Participants: Sašo Kreslin; Prof. Emeritus Dr. Dali Đonlagić; Andrej Korak; Srečko Lesjak; Andrej Orgulan, MSc; Janez Ribič; Assoc. Prof. Dr. Franc Jakl; Assoc. Prof. Dr. Gorazd Štumberger; Prof. Dr. Igor Tičar; Assoc. Prof. Dr. Jože Pihler; Jurček Voh

Project partners: Dravske elektrarne Maribor d.o.o.

Financed by: HSE Invest

Energy storage is important for power stations which ensure electricity in a band (thermal-power and nuclear power stations) so that they can operate at their maximum efficiency. Over many decades pumped storage hydroelectric power stations have mainly been used for storing large amounts of energy, which can also be expected in the near future. Pumped storage hydroelectric power stations were first used only for energy storage and covering peaks, whereas now they have become an important and comprehensive controlling tool. What also needs to be taken into consideration when connecting these energy converters, apart from technical measures and restrictions, are their operational features and the system’s response to them, as well as the existing technical regulation in our country.


This research is focused on the power connection of the Kozjak pumped-storage hydroelectric power station into the electrical power system. The study covers the analysis of the suggested solutions concerning connection, the choice of the most suitable connection, given the location, the effect on the environment, and an analyses of the suggested solutions in the light of reliability. In so doing, it bases itself on the statistics of the losses of similar transformers and overhead lines set in a similar environment (snow, wind, isoceraunical level) and on the data of the supplier of the varspeed generator.

The research is to provide an answer as whether it is justifiable to set up a parallel overhead line in the area of Zg. Duplek or whether it is better to upgrade the existing line into a multiple circuit line; how strong is the existing bracing system of the towers; is it possible to strengthen the towers or is it necessary to build new ones in the common course line. It might be more appropriate to open a system towards Kainachtal and build a double circuit line Hrenca – Kozjak; how reliable is the heavy line along the valley of the Drava and if it is even capable of transferring the desired amount of energy.

KZVOVO Kvantifikacija zanesljivosti vključitve objektov v omrežje upoštevaje integralne kriterije (Reliability quantification of objects integration into network regarding integral criteria)

Leader: prof. dr. Jože Voršič Participants: prof. dr. Branko Butinar, mag. Andrej Korak, prof. dr. Jože Pihler Project partners: FKKT

Financed by: HSE

The electro-energetic system is one of the largest and most important systems for societal functioning. It should be planned so that it provides economical, reliable and an environmentally-friendly supply of electric energy. Although all three attributes are an important reliability of supply, unambiguty comes first.

RPZGO Razpršena proizvodnja na zaključenem geografskem območju (Dispersed production in concluded geographic area)

Leader: prof. dr. Gorazd Štumberger Participants: mag. Andrej Hanžič, mag. Andrej Orgulan, Sebastijan Seme Project partners: TCPE

Financed by: HSE

General optimization of working diagrams for a system of electrical-energy production units


from dispersed production with an emphasis on renewable sources, was performed in this research. The goal of optimization is to ensure the energy-supply of a concluded geographical area with minimum usage of conventional energy sources. Simplified models of individual production units were used during optimization, and optimization was performed based on weather forecasts and the forecasted consumption diagramme.


SLO-BiH 2006/2007 Research of new earth electrodes and possibility of their introducing with emphases on foundation earth electrode


Participants: Janez Ribič, Marjan Stegne, Izudin Kapetanović, Nermin Sarajlić, Tatjana Konjić

Project partners: Faculty of Electrical Engineering, University of Tuzla, Slovenian Research Agency

Financed by: Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije

The research work comprehends the research of instantaneous circumstances in a power electric system within an earth system area and the momentary way of earthling in a building foundation. On these bases we can analyse detailed realisation earthling in a building foundation. After this analysis we will create a mathematical model of this earthling electrode and use it for the defined program tool. This model will later be included in a computer model of integrated overvoltage protection.

In 2006 we analysed an earthling system. We devoted over attention to the earthing electrodes in a building foundation. On the bases of detailed electrochemical analysis the reasonableness of building in galvanised steel ribbon when creating a concrete foundation and their connection with an armature in a building foundation, was researched

SLO-BiH 2006/2008 Impact of disturbances, which appears in 110 kV systems due to incidents, on power quality in MV network

Leader: prof. dr. Jože Voršič Participants: prof. dr. Gorazd Štumberger, asis. mag. Andrej Korak, Jurček Voh,

asis. Klemen Deželak, doc. dr. Tatjana Konjić, prof. dr. Izudin Kapetanović, doc. dr. Nermin Sarajlić, asis. Izudin Softić, asis. Mensur Kasumović

Project partners: Faculty of Electrical Engineering, University of Tuzla, Slovenian


Research Agency


High quality demands are set regarding the voltage level to consumers. The rule of parallel connection of consumers to the same voltage applies when connecting consumers. Many consumers are very sensitive to oscillation or deviation of voltage, which logically calls for the strictest rules in this area. Therefore, the SIST EN 50160 standard has been applied, which determines what characteristics of low supply voltage need to be observed. When the electricity supply is reliable enough, we need to ensure that the consumers power quality is also within those parameters which are seemingly invisible. By that we mean especially voltage form (voltage dips, rapid changes and harmonics). Such disturbance can appear on the voltage level of consumers or it can be a consequence of lightning or switching surges on higher voltage levels.

KSKI Quality of medium voltage composite insulators


Participants: Marjan Stegne; Darko Koritnik, MSc; Janez Ribič Project partners: ICEM-TC

Financed by: DOMITRAN

Research into a composite insulator's quality was performed. Ways to sample test products, regarding the specific terms of the producer and ways of type testing, were developed after studying production technology and used materials.

PUBLICATIONS

Matjaž Dolinar, Drago Dolinar, Gorazd Štumberger, Boštjan Polajžer, Jožef Ritonja, “A three-phase core-type transformer iron core model with included magnetic cross saturation,” IEEE trans. magn., Vol. 42, No. 10, pp. 2849-2951, Oct. 2006.

Matjaž Gaber, Jože Pihler, “Načrtovanje tokovnega udarnega generatorja,” Electrotechnical Review, Vol. 73, No. 1, pp. 53-58, 2006.

Miralem Hadžiselimović, Gorazd Štumberger, Tine Marčič, Bojan Štumberger, Ivan Zagradišnik, “Measurement of magnetic nonlinear characteristics of DC electromagnetic brake,” Prz. Elektrotech., Vol. 82, no. 12, pp. 76-79, 2006.


Peter Kitak, Jože Pihler, Igor Tičar, Andrej Stermecki, Christian Magele, Oszkar Biró, Kurt Preis, “Use of an optimization algorithm in designing medium-voltage switchgear insulation elements,” IEEE trans. magn., Vol. 42, No. 4, pp. 1347-1350, Apr. 2006.

Tine Marčič, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “Vpliv modulacijske frekvence na izgube elektromotornega pogona, harmonsko popačenje toka in temperaturo asinhronskega motorja,” Electrotechnical Review, Vol. 73, No. 2-3, pp. 125-130, 2006.

Boštjan Polajžer, Jožef Ritonja, Gorazd Štumberger, Drago Dolinar, J.-P. Lecointe, “Decentralized PI/PD position control for active magnetic bearings,” Electr. eng. (Berl.), Vol. 89, No. 1, pp. 53-59, Oct. 2006.

Boštjan Polajžer, Gorazd Štumberger, Drago Dolinar, “Design and analysis of radial active magnetic bearings,” ICS newsl., Vol. 13, No. 2, pp. 3-8, Jul. 2006.

Boštjan Polajžer, Gorazd Štumberger, Drago Dolinar, “Impact of iron core saturation on radial forces of active magnetic bearings,” Prz. Elektrotech., Vol. 82, No. 5, pp. 41-43, 2006.

Miran Rošer, Gorazd Štumberger, “Vpliv višjih harmonskih komponent toka na povečanje izgub v prenosnem vodu,” Electrotechnical Review, Vol. 73, No. 2-3, pp. 143-148, 2006.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Mladen Trlep, “Performance comparison of three-phase flux reversal permanent magnet motors with surface and inset permanent magnets,” Prz. Elektrotech., Vol. 82, No. 12, pp. 107-110, 2006.


Drago Dolinar, Petar Ljušev, Gorazd Štumberger, “Impact of magnetic saturation on the input-output linearizing tracking control of an induction motor,” Recent developments of electrical drives: best papers from the International Conference on Electrical Machines, ICEM'04, 2006, pp. 247-260.

Drago Dolinar, Gorazd Štumberger, “Low speed tracking control improvement of linear synchronus reluctance machine,” Proceedings of the IASTED International Conference on Modelling, Identification, and Control, Lanzarote, Spain, Feb. 2006, pp. 97-102.


Drago Dolinar, Gorazd Štumberger, Petar Ljušev, “Improved rotor flux linkage oriented control of an induction motor with included magnetic saturation,” ICEM 2006, XVII International conference on electrical machines, Crete island, Greece, Sep. 2006.

Matjaž Dolinar, Drago Dolinar, Gorazd Štumberger, “Primerjava modelov železnih jeder tristebrnega trifaznega transformatorja,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 435-437.


Matjaž Dolinar, Drago Dolinar, Gorazd Štumberger, Boštjan Polajžer, “Comparison of different iron core models of three phase core-type transformers,” XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 15-16.

Matjaž Dolinar, Drago Dolinar, Gorazd Štumberger, Boštjan Polajžer, “A three phase core-type transformer iron core model with included magnetic cross saturation,” Technical digests, IEEE International Magnetics Conference, San Diego, California, May 2006, pp. 356.

Matjaž Dolinar, Gorazd Štumberger, Boštjan Polajžer, Drago Dolinar, “Determining the magnetically nonlinear characteristics of a three phase core-type power transformer,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e813-e815.

Matjaž Gaber, Gorazd Hrovat, Mladen Trlep, Jože Pihler, “The use of Bezier patches in 2D calculations with FEM,” 12th International IGTE symposium on numerical fields calculation in electrical engineering, Graz, Austria, Sep. 2006, pp. 394-399.

Matjaž Gaber, Mladen Trlep, Jože Pihler, “FEM-based computation of flashover condition for a special three-electrode spark gap design,” IEEE CEFC 2006: digest book, The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, Apr. 2006, pp. 306.

Oriol Costa Garrido, Gorazd Štumberger, Jože Voršič, “Optimizing operational diagrams of electric energy production units based on renewable energy sources,” 15. Mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2006.

Bojan Grčar, Peter Cafuta, Gorazd Štumberger, Aleksandar M. Stanković, “Non-holonomy in IM torque control,” 9th IEEE International workshop on advanced motion control, AMC'06, Istanbul, Turkey, Mar. 2006, pp. 573-58.


Anton Habjanič, Mladen Trlep, Jože Pihler, “The influence of an additional substance in the trenches surrounding the grounding grid's conductors on the grounding grid's performance,” IEEE CEFC 2006: digest book, The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 430.

Miralem Hadžiselimović, Tine Marčič, Bojan Štumberger, Gorazd Štumberger, Ivan Zagradišnik, “Analytical and numerical analysis of magnetic field in a single - phase transformer,” Book of digests, First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, 2006, pp. 29-30.

Peter Kitak, Jože Pihler, Igor Tičar, Andrej Stermecki, “Potential control inside switch device using FEM and stochastic optimization algorithm,” IEEE CEFC 2006: digest book, The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 415.

Andrej Korak, Jože Voršič, “Izračun zanesljivosti oskrbe z električno energijo,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 319-322.

Andrej Korak, Jože Voršič, “UPS devices reliability,” Electronic proceedings, 13th IEEE Mediterranean Electrotechnical Conference, Málaga, Spain, May 2006.

Darko Koritnik, Jože Voršič, “Program for checking the air-termination system of lightning protection ŠČIT,” Collection de rapports, Paris, France, 2006.

Tine Marčič, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “Analysis of induction motor drive losses in the field-weakening region,” EPE-PEMC 2006: conference proceedings, 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1173-1178.

Andrej Orgulan, Jože Voršič, Andrej Kosmačin, “Solar energy potential in the urban areas,” Science day in Slovenian and Austrain Styria in the field of nanotechnology and energy research, Maribor, Slovenia, Mar. 2006, pp. 3-17.

Boštjan Polajžer, Drago Dolinar, Gorazd Štumberger, “Analysis of VSI-FED induction machine,” Proceedings, XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, , Maribor, Slovenia, Jun. 2006, pp. 85-86.

Boštjan Polajžer, Gorazd Štumberger, Drago Dolinar, “Numerical analysis of radial active magnetic bearings,” EPE-PEMC 2006: conference proceedings, 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1913-1918.


Boštjan Polajžer, Gorazd Štumberger, Sebastijan Seme, Drago Dolinar, “Ugotavljanje izvorov upadov napetosti,” Zbornik, 15. Mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2006.

Silvo Ropoša, Jože Voršič, “Postopek priključitve malih elektrarn v javna razdeljevalna omrežja,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 335-338.

Silvo Ropoša, Jože Voršič, “Problemi s časi odklopitev elektrarn v primeru okvar v omrežju,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 331-334.

Miran Rošer, Gorazd Štumberger, “Analiza napetostnih in tokovnih razmer ob delovanju SHUNT stikala,” 15. Mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2006.

Miran Rošer, Gorazd Štumberger, “Analysis of inrush currents in a distribution transformer,” XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 31-32.

Miran Rošer, Gorazd Štumberger, “Vpliv avtomatskega ponovnega vklopa na napetostne razmere,” 15. Mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2006.

Miran Rošer, Gorazd Štumberger, Viktor Tajnšek, “Meritev in izračun energije ob prisotnosti višjih harmonskih komponent v toku in napetosti,” 15. Mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2006.

Sebastijan Seme, Boštjan Polajžer, Peter Bregant, Denis Ferjančič, Gorazd Štumberger, “Ugotavljanje izvorov upadov napetosti na osnovi kriterija spremembe trenutne moči in energije,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 359-362.

Marjan Stegne, Jože Pihler, Vitodrag Kumperščak, “Prispevek delnih praznitev k preboju trdega dielektrika,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 399-402.

Andrej Stermecki, Peter Kitak, Igor Tičar, Jože Pihler, Oszkar Biró, Kurt Preis, “Reduction in cogging torque using optimization algorithm,” 12th International IGTE symposium on numerical fields calculation in electrical engineering, Graz, Austria, Sep. 2006, pp. 318-323.


Sašo Škorjanc, Gorazd Štumberger, Jože Voršič, “Izračun elektromagnetnega polja vodnikov,” 15. Mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2006.

Primož Šlibar, Gorazd Štumberger, “Determining magnetically nonlinear characteristics of electromagnetic devices with sinusoidal and stepwise changing voltages,” XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 33-34.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Anton Hamler, Mladen Trlep, Viktor Goričan, Marko Jesenik, “High-performance permanent magnet brushless motor with balanced concentrated windings and similar slot and pole numbers,” Proceedings of the 17th International Symposium on Soft Magnetic Material, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e829-e831.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Mladen Trlep, Anton Hamler, “Permanent magnet brushless DC motor; integrated motor drive electrical subsystem simulation,” Book of digests, First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 13-14.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “Torque ripple reduction in exterior-rotor permanent magnet synchronous motor,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e826-e828.

Bojan Štumberger, Gorazd Štumberger, Marko Jesenik, Viktor Goričan, Anton Hamler, Mladen Trlep, “Power capability and flux-weakening performance of interior permanent magnet synchronous motor with multiple flux barriers,” IEEE CEFC 2006: digest book, The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, Apr. 2006, pp. 416.

Gorazd Štumberger, “Analogija med pretakanjem električnega toka po prenosnem vodu in pretakanjem vode v odprtem kanalu,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 323-326.

Gorazd Štumberger, Miralem Hadžiselimović, Bojan Štumberger, Damijan Miljavec, Drago Dolinar, Ivan Zagradišnik, “Comparison of capabilities of reluctance synchronous motor and induction motor,” Proceedings of the 17th International Symposium on Soft Magnetic Material, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e835-e837.

Gorazd Štumberger, Boštjan Polajžer, Matej Toman, Drago Dolinar, “Orthogonal decomposition of currents, power definitions and energy transmission in three-phase systems treated in the time domain,” International conference on renewable energies and power quality (ICREPQ'06), Palma de Mallorca, Spain, Apr. 2006.


Gorazd Štumberger, Sebastijan Seme, Klemen Deželak, Boštjan Polajžer, Matej Toman, Drago Dolinar, “The impact of magnetically nonlinear iron core characteristics on reponses of a three-phase power transformer dynamic model,” Electromagnetic fields in mechatronics, electrical and electronic engineering: proceedings of ISEF'05, 2006, pp. 503-508.

Gorazd Štumberger, Bojan Štumberger, Drago Dolinar, “Analysis of cross-saturation effects in a linear synchronous reluctance motor performed by finite element method and measurements,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1907-1912.

Gorazd Štumberger, Bojan Štumberger, Drago Dolinar, “Dynamic two-axis model of a linear synchronous reluctance motor based on current and position-dependent characteristics of flux linkages,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e832-e834.

Gorazd Štumberger, Bojan Štumberger, Boštjan Polajžer, Matej Toman, Drago Dolinar, “Cross saturation effects in electric machines under dynamic operating conditions,” XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 1-2.

Tanja Tacer, Danilo Klasinc, Jože Pihler, “The possibility of building small hydro power plants in the old bed of the river Drava,” Science day in Slovenian and Austrain Styria in the field of nanotechnology and energy research, Maribor, Slovenia, Mar. 2006, pp. 18-28.

Amir Tokić, Jože Pihler, Nedžimija Demirović, “Piecewise modeling of nonlinear inductance and nonlinear resistance in electrical network transient simulations,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 343-346.

Matej Toman, Gorazd Štumberger, “Vpliv višjih harmonikov na delovanje distribucijskega transformatorja,” 15. Mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2006.

Matej Toman, Gorazd Štumberger, Drago Dolinar, “Effects of unbalanced nonlinear loads on performances of the three phase transformer,” Proceedings, XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 49-50.

Žiga Voršič, Jože Pihler, Dijana Močnik, “Mala hidroelektrarna Ceršak,” 15. Mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, Jun. 2006.

Žiga Voršič, Jože Pihler, Jože Voršič, “Uporaba matričnih turbin pri obnovi hidroelektrarn,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 347-350.


Ivan Zagradišnik, Miralem Hadžiselimović, Tine Marčič, Bojan Štumberger, Gorazd Štumberger, “Heating analysis for explosion proof protected motors fed from 400V/50HZ and 460V/60HZ supply,” Book of digests, First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 71-72.


Andrej Korak, Jože Voršič, “Verjetnostna analiza zanesljivosti priključka občutljivega odjemalca na razdelilno omrežje,” 12. međunarodni simpozij "Električne instalacije", dani Josipa Lončara, Šibenik, Croatia, May 2006, pp. 19-24 (S-17).

Jože Pihler, Darko Koritnik, Mitja Koprivšek, Matija Strehar, “Kakovost in preizkušanje inštalacijskih odklopnikov, razvojni trendi in novosti,” 27. posvetovanje Kotnikovi dnevi: izobraževalni program, Radenci, Slovenia, Mar. 2006, pp. 1/VII-16/VII.

Aleš Steny, Jože Voršič, Žiga Voršič, “Pravila za vključitev razpršene proizvodnje v distribucijska omrežja,” 12. međunarodni simpozij "Električne instalacije", dani Josipa Lončara, Šibenik, Croatia, May 2006, pp. 26-32 (S-1).


Gorazd Štumberger, “Electric energy transmission and orthogonal current decomposition in the presence of higher harmonic components,” Science day in Slovenian and Austrain Styria in the field of nanotechnology and energy research, Maribor, Slovenia, Mar. 2006, pp. 29-41.

Gorazd Štumberger, “Zmogljivost pogona z asinhronskim motorjem ovrednotene z diferenčno evolucijo in magnetno nelinearnim dvoosnim modelom,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 439-442.

Miro Žunec, Igor Tičar, Franc Jakl: “Determination of current and temperature distribution in overhead conductors by using electromagnetic-field analysis tools”, IEEE trans. power deliv., Vol. 21, No. 3, str. 1524-1529, jul. 2006.

André Leblond, Franc Jakl, “Guidelines for meteorological icing models, statistical methods and topographical effects = Guide concernant les modeles de givrage atmosphériques, les


méthodes statistiques et l'effet de la topographie, ” Electra (Paris. 1967), No. 225, str. 49-55 (ang.) , str. 48-54 (fra), apr. 2006.

Franc Jakl: “Ugotavljanje neelastičnega raztezka vodnikov na daljnovodu 2X400 kV Maribor-Kainachtal (Avstrija)”, Zbornik petnajste mednarodne Elektrotehniške in računalniške konference ERK 2006, Portorož, sep. 2006, Zv. A, str. 363-366.

Franc Jakl, Krešimir Bakić, “Obnovljivi viri energije : sedmi unikatni koledar [za leto 2007],” Slovensko društvo elektroenergetikov: SLOKO CIGRE: CIRED. 1 nam. koledar (14 listov), barve, Ljubljana, 2006.


Franc Jakl: “"Draft 2: De-icing on Overhead Lines",” invited lecturer at the 33th Meeting CIGRE WGB2.12 Electrical Aspects of Overhead Lines & JTF 12-5 WGB2.12/WGB2.16, Toronto, Canada, Apr. 24, 2006.

Franc Jakl: “"Optical Ground Wire Damage on Overhead Transmission Lines of ELES-Elektro Slovenija for the Period of 1988 - 2001",” invited lecturer at the 34th Meeting CIGRE WGB2.12 Electrical Aspects of Overhead Lines & JTF 12-5 WGB2.12/WGB2.16, Aix-en-Provence, France, Aug. 25, 2006.


Prof. Dr. Jože Voršič, Jurček Voh, Andrej Hanžič, MSc, Lidija Korpar Koritnik, Marjan Stegne, Assoc. Prof. Dr. Jože Pihler, Assoc. Prof. Dr. Gorazd Štumberger, Darko Koritnik, MSc:

Komunalna energetika - Power Engineering 2006, international conference, organisation and implementation, Maribor, Slovenia, May 9–11, 2006.


Assoc. Prof. Dr. Franc Jakl: Participation at 10th Meeting CIGRE WGB2.16 Meteorology for Overhead Lines, meeting participation, Sydney, Australia, Apr. 4–7, 2006.


Assoc. Prof. Dr. Franc Jakl: Participation at 33th Meeting CIGRE WGB2.12 Electrical Aspects of Overhead Lines, meeting participation, Toronto, Canada, Apr. 24–25, 2006.

Assoc. Prof. Dr. Jože Pihler: Participation at CEFC 2006, Miami Florida, meeting participation, Miami, Florida, United States, Apr. 28 to May 5, 2006.

Andrej Korak, Assoc. Prof. Dr. Jože Pihler, Prof. Dr. Jože Voršič:

DEHN GmbH, Neumarkt, Nemčija, factory visit and arrangement of mutual co-operation in the development, visit, Neumarkt, Germany, May 30 to June 2, 2006.

Assoc. Prof. Dr. Franc Jakl: Participation at 34th Meeting CIGRE WGB2.12 Electrical Aspects of Overhead Lines, meeting participation, Paris, France, Aug. 25–26, 2006.

Assoc. Prof. Dr. Franc Jakl: Participation at 11th Meeting CIGRE WGB2.16 Meteorology for Overhead Lines, meeting participation, Paris, France, Aug. 26–31, 2006.

Assoc. Prof. Dr. Franc Jakl: Paticipation at 41ST General Meeting od Inernational CIGRE, meeting participation, Paris, France, Aug. 27 to Sept. 1, 2006.

GUESTS AND VISITORS

Tatjana Konjić, Nermin Sarajlić (Faculty of Electrical Engineering, University of Tuzla, Tuzla, Bosina and Herzegovina):

Co-operation on bilateral project between Republic of Slovenia and Bosnia and Hercegovina, scientific collaboration, Sept. 1, 2006.

PE - 30 Electromechanical Systems Control Laboratory

ELECTROMECHANICAL SYSTEMS CONTROL LABORATORY

Head:

Prof. Dr. Bojan Grčar

Phone: +386 2 220 70 71


RESEARCH PROJECTS


Applied projects

L2-7560-1792 Načrtovanje in vodenje naprednega sistema za točkasto varjenje (Design and control of and advanced spot welding system)


Participants: Dr. Boštjan Polajžer; Prof. Dr. Drago Dolinar; Tine Marčič; Matej Gajzer, MSc; Matej Toman; Peter Virtič; Zlatko Strelec; Dr. Oto Težak; Andrej Hanžič, MSc

Project partners: Indramat elektromotorji, Proizvodnja električnih motorjev, d.o.o., Tehnološki center za električne stroje

Financed by: Indramat elektromotorji, Proizvodnja električnih motorjev, d. o. o., Slovenian Research Agency

A system of spot welding is a complex electromagnetic device composed of numerous elements. Some elements dominantly influence the reliability of operation under prescribed specifications which consequently means that there exists the possibility of a considerable increase in the system performances. The existing transformer is oversized. The design of advanced adaptive control for a power supply inverter will enable compensation for the flux density DC component in a transformer iron core, which will reduce the dimensions of the transformer considerably.

Electromechanical Systems Control Laboratory PE - 31

The goal of the project is to find an optimal transformer design and active control algorithm, which should together lead to transformer reduction with prevention of the overload conditions on the primary, at the same time. To reach this goal, analytical and experimental methods will be employed. The optimal transformer design and appropriate control of the power supply inverter will be determined by differential evolution – a stochastic search algorithm.


EPADO Power Distribution Network Automation System - DINAS

Leader: Prof. Dr. Bojan Grčar (Faculty of Electrical Engineering and Computer Science)

Participants: Asst. Prof. Dr. Jožef Ritonja, Dr. Boštjan Polajžer, Prof. Dr. Drago Dolinar

Project partners: Iskra Sistemi d.d. Ljubljana, Iskra Techno R&D, Sipronika d.o.o Ljubljana, UM-FERI, Faculty of Technical Sciences Novi Sad

Financed by: Ministry of Higher Education, Science and Technology – EUREKA project

The project is assigned to the development, testing and introduction to the marketing of systems for the automation, protection and restoration of the medium voltage networks. The main scope of the project involves the development and implementation of the advanced cost-effective software and hardware solutions for control and protection. In the case of damaged lines, the whole system quickly and automatically restores the power supply to the disconnected users. The contribution of FERI to the project concern development of basic algorithms for signal processing and protection, technical support in upgrading existing algorithms, and consulting at all project stages.


Industrial project


Leader: Asst. Prof. Dr. Bojan Štumberger (Faculty of Electrical Engineering


and Computer Science) Participants: Asst. Prof. Dr. Marko Jesenik, Viktor Goričan, Assoc. Prof. Dr.

Gorazd Štumberger, Miralem Hadžiselimovič, Prof. Dr. Anton Hamler, Prof. Dr. Mladen Trlep




The object of the work is a feasibility study of electric power transfer in the rotating body, on the basis of an electrical generator mounted on the drive shaft. Different magnetic structures of an electric generator were analyzed in accordance with the restrictions and demands of a power electronic converter, which will be mounted on the generator's terminals.


BI-US/04-05 Induction machine (IM) torque control with improved efficiency

Leader: Prof. Dr. Bojan Grčar (Faculty of Electrical Engineering and Computer Science)

Participants: Aleksander Stanković, Assoc. Prof. Dr. Gorazd Štumberger, Assoc. Prof. Dr. Peter Cafuta, Hugo-Rodrigez Cortes

Financed by: ARRS


In the project, IM torque-control is studied as an example of a non-holonomic system with drift terms. Following the famous Brockett integrator problem, several control propositions were introduced. The work extends the control scheme from the state to the output control in several steps. By introducing adjusted amplitude, frequency and phase modulation of the IM stator current vector, the rotor flux linkage vector is implicitly forced to generate the required periodic trajectory observed in the rotor reference framework. Improvements in the transient feedback performance, maximal steady-state efficiency, avoidance of singularities and sufficient robustness were actually achieved by making the current modulation dependent on the torque error signal. In contrast with Brockett's original work, instead of global only local stability could be assured. The overall IM control requires cascaded high-gain current controllers, along with machine torque estimation. Simulation and experimental results illustrate the main characteristics of the proposed control, with an emphasis on the generated machine torque and estimated periodic trajectories of the rotor flux linkage vector.


PUBLICATIONS

Matjaž Dolinar, Drago Dolinar, Gorazd Štumberger, Boštjan Polajžer, Jožef Ritonja, “A three-phase core-type transformer iron core model with included magnetic cross saturation,” IEEE trans. magn., Vol. 42, No. 10, pp. 2849-2951, Oct. 2006.

Boštjan Polajžer, Jožef Ritonja, Gorazd Štumberger, Drago Dolinar, J.-P. Lecointe, “Decentralized PI/PD position control for active magnetic bearings,” Electr. eng. (Berl.), Vol. 89, No. 1, pp. 53-59, Oct. 2006.

Boštjan Polajžer, Gorazd Štumberger, Drago Dolinar, “Design and analysis of radial active magnetic bearings,” ICS newsl., Vol. 13, No. 2, pp. 3-8, Jul. 2006.

Boštjan Polajžer, Gorazd Štumberger, Drago Dolinar, “Impact of iron core saturation on radial forces of active magnetic bearings,” Prz. Elektrotech., Vol. 82, No. 5, pp. 41-43, 2006.

Jožef Ritonja, “Regulacija aktivnih magnetnih ležajev,” Ventil (Ljubl.), 12, 1, pp. 19-24, 2006.

Jožef Ritonja, Boštjan Polajžer, Drago Dolinar, “Določitev PI/PD regulatorjev za vodenje aktivnih magnetnih ležajev,” Electrotechnical Review, Vol. 73, No. 2-3, pp. 131-136, 2006.

Drago Dolinar, Petar Ljušev, Gorazd Štumberger, “Impact of magnetic saturation on the input-output linearizing tracking control of an induction motor,” Recent developments of electrical drives: best papers from the International Conference on Electrical Machines, ICEM'04, 2006, pp. 247-260.

Drago Dolinar, Gorazd Štumberger, “Low speed tracking control improvement of linear synchronus reluctance machine,” Proceedings of the 25th IASTED International Conference on Modelling, Identification, and Control, Lanzarote, Spain, Feb. 2006, pp. 97-102.

Drago Dolinar, Gorazd Štumberger, Petar Ljušev, “Improved rotor flux linkage oriented control of an induction motor with included magnetic saturation,” ICEM 2006, XVII International conference on electrical machines, Crete island, Greece, Sep. 2006.




Matjaž Dolinar, Drago Dolinar, Gorazd Štumberger, Boštjan Polajžer, “Comparison of different iron core models of three phase core-type transformers,” Proceedings, XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 15-16.

Matjaž Dolinar, Drago Dolinar, Gorazd Štumberger, Boštjan Polajžer, “A three phase core-type transformer iron core model with included magnetic cross saturation,” Technical digests, IEEE International Magnetics Conference, San Diego, California, May 2006, pp. 356.

Matjaž Dolinar, Gorazd Štumberger, Boštjan Polajžer, Drago Dolinar, “Determining the magnetically nonlinear characteristics of a three phase core-type power transformer,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e813-e815, 2006.


Bojan Grčar, Boštjan Polajžer, “Model based methods for distance protection algorithms,” Proceedings of the 15th International Conference on Power System Protection - PSP 2006, Bled, Slovenia, Sep. 2006, pp. 190-194.

Robert Ivanuša, Vladislav Rajkovič, Oto Težak, “Odločitveni model izbire študija,” Management sprememb: zbornik 25. mednarodne konference o razvoju organizacijskih znanosti, Portorož, Slovenia, Mar. 2006, pp. 425-436.

Boštjan Polajžer, Drago Dolinar, Gorazd Štumberger, “Analysis of VSI-FED induction machine,” XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 85-86.

Boštjan Polajžer, Gorazd Štumberger, Drago Dolinar, “Numerical analysis of radial active magnetic bearings,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1913-1918.

Boštjan Polajžer, Gorazd Štumberger, Sebastijan Seme, Drago Dolinar, “Ugotavljanje izvorov upadov napetosti,” 15. Mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2006.

Marko Polak, Jožef Ritonja, Bojan Grčar, “On-line power system frequency estimation,” Proceedings of the 15th International Conference on Power System Protection - PSP 2006, Bled, Slovenia, Sep. 2006, pp. 195-200.


Jožef Ritonja, Boštjan Polajžer, Drago Dolinar, “Decentralized control for active magnetic bearings,” EPE-PEMC 2006: conference proceedings, 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1413-1418.

Jožef Ritonja, Boštjan Polajžer, Drago Dolinar, “Simplified active magnetic bearing control design,” XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 87-88.

Sebastijan Seme, Boštjan Polajžer, Peter Bregant, Denis Ferjančič, Gorazd Štumberger, “Ugotavljanje izvorov upadov napetosti na osnovi kriterija spremembe trenutne moči in energije,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 359-362.

Gorazd Štumberger, Miralem Hadžiselimović, Bojan Štumberger, Damijan Miljavec, Drago Dolinar, Ivan Zagradišnik, “Comparison of capabilities of reluctance synchronous motor and induction motor,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e835-e837.

Gorazd Štumberger, Boštjan Polajžer, Matej Toman, Drago Dolinar, “Orthogonal decomposition of currents, power definitions and energy transmission in three-phase systems treated in the time domain,” International conference on renewable energies and power quality (ICREPQ'06), Palma de Mallorca, Spain, Apr. 2006.

Gorazd Štumberger, Sebastijan Seme, Klemen Deželak, Boštjan Polajžer, Matej Toman, Drago Dolinar, “The impact of magnetically nonlinear iron core characteristics on reponses of a three-phase power transformer dynamic model,” Electromagnetic fields in mechatronics, electrical and electronic engineering: proceedings of ISEF'05, 2006, pp. 503-508.

Gorazd Štumberger, Bojan Štumberger, Drago Dolinar, “Analysis of cross-saturation effects in a linear synchronous reluctance motor performed by finite element method and measurements,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1907-1912.




Matej Toman, Gorazd Štumberger, “Vpliv višjih harmonikov na delovanje distribucijskega transformatorja,” 15. Mednarodno posvetovanje Komunalna energetika, Maribor, Slovenia, May 2006.

Matej Toman, Gorazd Štumberger, Drago Dolinar, “Effects of unbalanced nonlinear loads on performances of the three phase transformer,” XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 49-50.


Prof. Dr. Drago Dolinar: "Modelling and Control of Electrical Machines", invited lectures, formal call, Bethune, France, Apr. 3–14, 2006.

Prof. Dr. Bojan Grčar: "New developments in nonlinear induction machine torque control", invited lecture, formal call, Boston, United States, June 6, 2006.

Asst. Prof. Dr. Jožef Ritonja: "Automating with Programmable Controllers", invited lecture, formal call, Bethune, France, Oct. 11–22, 2006.

Prof. Dr. Bojan Grčar: "Signal and model based methods for numerical distance protection", invited lecture, formal call, Čačak, Yugoslavia, Nov. 22, 2006.


FUNDAMENTALS AND THEORY OF ELECTROTECHNICS LABORATORY

Head:

Prof. Dr. Igor Tičar

Phone: +386 2 220 70 04


RESEARCH PROJECTS


Industrial projects

VČHKES Študija za izvedbo daljnovodne povezave ČHE Kozjak - RTP Maribor (Study of ČHE Kozjak - RTP Maribor powerline connection)


Participants: Sašo Kreslin; Prof. Emeritus Dr. Dali Đonlagić; Andrej Korak; Srečko Lesjak; Andrej Orgulan, MSc; Janez Ribič; Assoc. Prof. Dr. Franc Jakl; Assoc. Prof. Dr. Gorazd Štumberger; Prof. Dr. Igor Tičar; Assoc. Prof. Dr. Jože Pihler; Jurček Voh

Project partners: Dravske elektrarne Maribor d.o.o.

Financed by: HSE Invest

Energy storage is important for power stations which ensure electricity in a band (thermal power stations and nuclear power stations) so that they can operate with their maximum efficiency. For many decades pumped storage hydroelectric power stations have mainly been used for storing large amounts of energy, which can also be expected in the near future. Pumped storage hydroelectric power stations were first used only for energy storage and covering peaks, whereas now they have become an important and comprehensive controlling tool. What also needs to be taken into consideration when connecting these energy


converters, apart from technical measures and restrictions, are their operational features and the system’s response to them, as well as the existing technical regulation in our country.

The research is focused on the power connection of the pumped storage hydroelectric power station Kozjak into the electrical power system. The study covers an analysis of the suggested solutions concerning connection, choice of the most suitable connection given the location, the effect on the environment and the analysis of the suggested solutions in the light of reliability. In so doing, it bases itself on the statistics of the losses of similar transformers and overhead lines set in a similar environment (snow, wind, isoceraunical level) and on the data of the supplier of the varspeed generator.

The research is to provide an answer as to whether it is justifiable to set up a parallel overhead line in the area of Zg. Duplek or is it better to upgrade the existing line into a multiple circuit line; how strong is the existing bracing system of the towers; is it possible to strengthen the towers or is it necessary to build new ones in the common course line. It might be more appropriate to open a system towards Kainachtal and build a double circuit line Hrenca – Kozjak; how reliable is the heavy line along the valley of Drava and if it is even capable of transferring the desired amount of energy.

PUBLICATIONS

Peter Kitak, Jože Pihler, Igor Tičar, Andrej Stermecki, Christian Magele, Oszkar Biró, Kurt Preis, “Use of an optimization algorithm in designing medium-voltage switchgear insulation elements,” IEEE trans. magn., Vol. 42, No. 4, pp. 1347-1350, Apr. 2006.

Kurt Preis, Oszkar Biró, Gerhard Buchgraber, Igor Tičar, “Thermal-electromagnetic coupling in the finite-element simulation of power transformers,” IEEE trans. magn., Vol. 42, No. 4, pp. 999-1002, Apr. 2006.

Andrej Stermecki, Igor Tičar, Peter Kitak, “Comparison between two modelling approaches to a PM brushless motor study,” Prz. Elektrotech., Vol. 82, no. 5, pp. 17-19, 2006.

Andrej Stermecki, Igor Tičar, Ivan Zagradišnik, Peter Kitak, “FEM-based design of an induction motor's part winding to reduce the starting current,” IEEE trans. magn., Vol. 42, No. 4, pp. 1299-1302, Apr. 2006.

Miro Žunec, Igor Tičar, Franc Jakl, “Determination of current and temperature distribution in overhead conductors by using electromagnetic-field analysis tools,” IEEE trans. power deliv., Vol. 21, No. 3, pp. 1524-1529, Jul. 2006.


Peter Kitak, Jože Pihler, Igor Tičar, Andrej Stermecki, “Potential control inside switch device using FEM and stochastic optimization algorithm,” The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 415.

Andrej Orgulan, Tomaž Slatinek, “Vpliv osvetljenih površin na svetlobno onesnaženje,” Razsvetljava delovnih mest: zbornik, Maribor, Slovenia, 2006, pp. 149-156.

Andrej Orgulan, Jože Voršič, Andrej Kosmačin, “Solar energy potential in the urban areas,” Science day in Slovenian and Austrain Styria in the field of nanotechnology and energy research, Maribor, Slovenia, Mar. 2006, pp. 3-17.

Kurt Preis, Oszkar Biró, Igor Tičar, “Calculation of the torque on a permanent magnet rotation in a conducting tube,” The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 173.

Andrej Stermecki, Peter Kitak, Igor Tičar, Jože Pihler, Oszkar Biró, Kurt Preis, “Reduction in cogging torque using optimization algorithm,” 12th International IGTE symposium on numerical fields calculation in electrical engineering, Graz, Austria, Sep. 2006, pp. 318-323.

Andrej Stermecki, Igor Tičar, Ivan Zagradišnik, Peter Kitak, “FEM analysis of a compressor induction motor drive's starting characteristics,” The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 305.


Igor Tičar: “Visit of the international conference CEFC 2006,” paper presentation, Miami, Florida, United States, Apr. 30, 2006.

Igor Tičar, Andrej Stermecki, Peter Kitak: “Visit of the international conference IGTE 2006,“ paper presentation, Graz, Austria, Sep. 17–20. 2006.


Prof. Dr. Igor Tičar: Visit to the fuel cell development and testing laboratories, reasearch institute of AVL., project meeting participation, Graz, Austria, Dec. 20, 2006.

Prof. dr. Igor Tičar, Peter Kitak, Andrej Stermecki

Cooperation on research work with IGTE TU Graz, Graz, Austria, Mar.15, 2006, Jun. 8-9, 2006 and Dec. 11, 2006.


GUESTS AND VISITORS

Prof. Dr. Oscar Biro, Prof. Dr. Kurt Preis (Institut für Grundlagen und Theorie der Elektrotechnik, Graz, Austria):

Cooperation with Fundamentals and Theory of Electrotechnics Laboratory, FERI Maribor, postgraduate research work, Apr. 26, 2006.

Prof. Dr. Tomaž Slivnik (FER Ljubljana, Ljubljana, Slovenia)

Cooperation with Fundamentals and Theory of Electrotechnics Laboratory, FERI Maribor, postgraduate research work, Apr. 26, 2006.

Applied Electromagnetics Laboratory PE - 41

APPLIED ELECTROMAGNETICS LABORATORY

Head:

Prof. Dr. Mladen Trlep

Phone: +386 2 220 70 41


Analysis of the electromagnetic field in an induction motor.

PE - 42 Applied Electromagnetics Laboratory

RESEARCH PROJECTS



RMS Razvoj mehatronskih sklopov (Development of mechatronic connections)

Leader: Prof. Dr. Anton Hamler (Faculty of Electrical Engineering and Computer Science)

Participants: Asst. Prof. Dr. Bojan Štumberger, Gorazd Hrovat, Asst. Prof. Dr. Marko Jesenik, Viktor Goričan, Anton Habjanič, Prof. Dr. Mladen Trlep

Project partners: Iskra MEHANIZMI, d.d.

Financed by: Ministry of Economics of the Republic of Slovenia, Iskra MEHANIZMI, d. d.

Development of different mechatronic connections which are used, first of all in the car industry, is carried out within the framework of the project. It is a long-term project. The task of the Applied electromagnetics laboratory of the Faculty of Electrical Engineering and Computer Sciences in the year 2006 is the development of two electromechanical converters for mechatronic connections’ drives, which are developed as prototypes and now discussions with the partners are in progress.

SS-U1.1 Policentrični tehnološki center kot mednarodni inovacijski sistem slovenske avtomobilske dobaviteljske industrije – Strukturni skladi, Ukrep 1.1: Spodbujanje inovacijskega okolja

Leader: Asst. Prof. Dr. Aleš Hace (Faculty of Electrical Engineering and Computer Science), Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science)

Participants: Aljaž Kapun, Dr. Gregor Edelbaher, Dejan Kos, Milan Čurkovič, Prof. Dr. Anton Hamler

Project partners: Faculty of Electrical Engineering and Computer Science, AET, d.o.o., Iskra Industrija sestavnih delov d.d., Iskra MEHANIZMI, d.d.

Within the project we are developing new mechatronic systems for the European automotive industry in cooperation with Iskra Mehanizmi d.d.. Thus our activities are directed towards the development of new types and the control of stepping motors. We are also developing a system for the measurement and analysis of stepping motors.



BI-PL/05-07-005 Numerical modelling of electromagnetic structures

Leader: Prof. Dr. Mladen Trlep (Faculty of Electrical Engineering and Computer Science), Prof. Dr. Andrzej Krawczyk (Electrotechnical Institute)

Participants: Asst. Prof. Dr. Bojan Štumberger, Anton Habjanič, Asst. Prof. Dr. Marko Jesenik, Gorazd Hrovat, Viktor Goričan, R. Starzynski, Prof. Dr. Anton Hamler, Prof. Dr. S. Wiak, Matjaž Gaber, S. Sikora, J. Sikora, Prof. Emeritus Dr. Božidar Hribernik

Financed by: Ministry of School, Science and Sport of the Republic of Slovenia, Polish academy of Sciences

Applications of numerical methods for electromagnetic field analysis in biological tissues together with the development of an inverse approach with the DRM method for use in medical diagnostics was the work covered by this project. New software, which will provide some specific solutions and will be adapted to existing program solutions, is being developed.

BI-MK/06-07-002 Application of FEM in design and analysis of electrical machines

Leader: prof. dr. Mladen Trlep, prof. dr. Lidija Petkovska (Faculty of Electrical Engineering, Skopje)

Participants: Prof. Dr. A. Hamler, Prof. Dr. I. Tičar, Asst. Prof. Dr. M. Jesenik, Asst. Prof. Dr. B. Štumberger, Dr. G. Hrovat, V. Goričan, Anton Habjanič, Prof. Dr. M. Čundev, Dr. G. Cvetkovski, Dr. V. Stoilkov, Dr. K. Najdenkovski

Financed by: Ministry of School, Science and Sport of the Republic of Slovenia

The main result of the project will be an upgrade/development of the new modules/programs for calculating the parameters and performance characteristics of electrical machines, based on the FEM results. A special stress will be put on the investigation of possibilities offered by the Finite Element Method in the design of electrical machines. There new concepts will be developed in the procedure of creating and producing prototypes of electrical machines.



Industrial project

MS32 Izdelava prototipa in osvajanje pilotne proizvodnje stikala MS 32 (Production of prototype and preparing pilot production of the switch MS 32)

Leader: Prof. Dr. Anton Hamler (Faculty of Electrical Engineering and Computer Science)

Participants: Prof. Dr. Mladen Trlep; G. Hrovat; Asst. Prof. Dr. Bojan Štumberger; Asst. Prof. Dr. Marko Jesenik; Viktor Goričan; Boris Bizjak, MSc

Financed by: Ministry of the Economy, Iskra Stikala, d. d.

Duration: Jan. 2000 to May 2006

This project was related to the development of a technically pretentious motor protection switch, the production of which will be cheaper than the production of existing less pretentious switches. Analysis of the magnetic, electrical and heating conditions, already done from the basic idea of switch construction, was our job in this project. Because the construction of the type of switch defined is 70% of costs, it bears the main burden of the switch price. The construction has likewise a basic influence on switch efficiency, which can be changed during development and switch construction only, as in earlier mentioned analysis. Pilot switch production is in the stage of testing.



Participants: Asst. Prof. Dr. Marko Jesenik, Viktor Goričan, Assoc. Prof. Dr. Gorazd Štumberger, Miralem Hadžiselimovič, Prof. Dr. Anton Hamler, Prof. Dr. Mladen Trlep





The object of the work was a feasibility study of electric power transfer in a rotating body, on the basis of an electrical generator mounted on the drive shaft. Different magnetic structures of the electric generator were analyzed in accordance with the restrictions and demands of a power electronic converter which will be mounted on the generator's terminals.

AE BS-1 Integrirani generator izmenične napetosti s korekcijo faktorja moči (Integrated generator of alternating with power factor correction)


Participants: Prof. Dr. Anton Hamler, Prof. Dr. Mladen Trlep, Asst. Prof. Dr. Marko Jesenik, Viktor Goričan

Project partners: Tehnološki center za električne stroje, Iskra Avtoelektrika d.d.

Financed by: Tehnološki center za električne stroje


The object of the work was the analysis of an integrated generator with power factor correction. Two concepts of an integrated generator with a power electronic converter were analyzed in respect to the complexity and structure of a power electronic converter. The load characteristics of an integrated generator were determined, together with concentrated generator parameters for different speeds and different load conditions.

PUBLICATIONS

Viktor Goričan, Anton Hamler, Marko Jesenik, Bojan Štumberger, Mladen Trlep, “Measurement of alternating magnetic properties of grain-oriented materials using a round rotation single sheet tester,” Phys., B Condens. matter, No. 372, pp. 194-197, 2006.

Anton Habjanič, Mladen Trlep, “FEM analysis of the local non-homogeneity influence on the grounding grid parameters,” Prz. Elektrotech., Vol. 82, No. 5, pp. 30-32, 2006.

Anton Habjanič, Mladen Trlep, “The simulation of the soil ionization phenomenon around the grounding system by the finite element method,” IEEE trans. magn., Vol. 42, No. 4, pp. 867-870, Apr. 2006.

Miralem Hadžiselimović, Gorazd Štumberger, Tine Marčič, Bojan Štumberger, Ivan Zagradišnik, “Measurement of magnetic nonlinear characteristics of DC electromagnetic brake,” Prz. Elektrotech., Vol. 82, No. 12, pp. 76-79, 2006.


Gorazd Hrovat, Anton Hamler, “Coupled current and thermal problem in the motor protection switch; verification of calculated temperature with measured ones,” IEEE trans. compon. packag. technol., Vol. 29, No. 4, pp. 764-769, 2006.

Gorazd Hrovat, Anton Hamler, “Determination of heat circumstances in the motor protection switch considering air flow,” IEEE trans. magn., Vol. 42, No. 4, pp. 1071-1074, Apr. 2006.

Marko Jesenik, Viktor Goričan, Mladen Trlep, Anton Hamler, Bojan Štumberger, “Finite element magnetic field calculation in the anisotropic magnetic material,” Prz. Elektrotech., Vol. 82, No. 5, pp. 20-22, 2006.

Marko Jesenik, Viktor Goričan, Mladen Trlep, Anton Hamler, Bojan Štumberger, “Transient analysis of magnetic field including anisotropic magnetic material characteristics,” IEEE trans. magn., Vol. 42, No. 4, pp. 959-962, Apr. 2006.

Marko Jesenik, Viktor Goričan, Mladen Trlep, Anton Hamler, Bojan Štumberger, “Transient anisotropic magntic field calculation,” Phys., B Condens. matter, No. 372, pp. 185-189, 2006.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “An algorithm for determination of topology from a set of line segments,” WSEAS Trans. Comput., Vol. 5, Iss. 7, pp. 1582-1588, Jul. 2006.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A compression method for FEM data represented by quadrilaterals,” WSEAS transactions on computer research, Vol. 1, Iss. 2, pp. 207-213, 2006.

Miran Rodič, Karel Jezernik, Mladen Trlep, “Dynamic emulation of mechanical loads: and advanced approach,” IEE proc., Electr. power appl., Vol. 153, no. 2, pp. 159-166, Mar. 2006.

Miran Rodič, Karel Jezernik, Mladen Trlep, “Mechatronic systems` control design using dynamic emulation of mechanical loads,” Automatika (Zagreb), 47, 1/2, pp. 11-18, 2006.


Mladen Trlep, Anton Hamler, Marko Jesenik, Bojan Štumberger, “Interactive teaching of electromagnetic field by simultaneous FEM analysis,” IEEE trans. magn., Vol. 42, No. 4, pp. 1479-1482, Apr. 2006.


Miloš Beković, Anton Hamler, “Numeric field calculation for determining electromechanical characteristics of universal motor,” VIII international workshop for candidates for a doctor's degree, Wisła, Poland, Oct. 2006, Vol. 2, pp. 379-382.

Matjaž Gaber, Gorazd Hrovat, “Modeli izračunov in model simulacije razelektritve,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 411-414.

Matjaž Gaber, Gorazd Hrovat, Mladen Trlep, Jože Pihler, “The use of Bezier patches in 2D calculations with FEM,” 12th International IGTE symposium on numerical fields calculation in electrical engineering, Graz, Austria, Sep. 2006, pp. 394-399.

Matjaž Gaber, Mladen Trlep, “Atmosferske razelektritve,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 403-406.

Matjaž Gaber, Mladen Trlep, Jože Pihler, “FEM-based computation of flashover condition for a special three-electrode spark gap design,” The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 306.

Viktor Goričan, Anton Hamler, Marko Jesenik, Bojan Štumberger, Mladen Trlep, “Interaction of z component of magnetic field between two samples of GO material in the round rotational single sheet tester (RRSST),” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, Iss. 2, pp. e558-e560.

Anton Habjanič, Mladen Trlep, “FEM analysis of grounding system parameters considering additional substance,” Electromagnetic fields in mechatronics, electrical and electronic engineering: proceedings of ISEF'05, 2006, pp. 175-178.

Anton Habjanič, Mladen Trlep, “Optimal design of the grounding grid by FEM considering different layered soil models,” First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 41-42.

Anton Habjanič, Mladen Trlep, Jože Pihler, “The influence of an additional substance in the trenches surrounding the grounding grid's conductors on the grounding grid's performance,” The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 430.

Miralem Hadžiselimović, Tine Marčič, Bojan Štumberger, Gorazd Štumberger, Ivan Zagradišnik, “Analytical and numerical analysis of magnetic field in a single - phase transformer,” First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 29-30.


Anton Hamler, Viktor Goričan, Borivoj Šuštaršič, Albin Sirc, “The use of soft magnetic composite materials in synchronous electric motor,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, Iss. 2, pp. e816-e819.

Anton Hamler, Gorazd Hrovat, Bojan Štumberger, Marko Jesenik, Mladen Trlep, “Coupled electric, thermal and thermal strain problems,” EMF 2006: book of summaries, 2006, pp. 87-88.

Gorazd Hrovat, Matjaž Gaber, “Vpliv izbire končnega elementa na rezultate strukturne analize bimetalnega sprožnika,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 463-470.

Gorazd Hrovat, Matjaž Gaber, Anton Hamler, “The magnetic analysis of contact system in the motor protection switch,” 12th International IGTE symposium on numerical fields calculation in electrical engineering, Graz, Austria, Sep. 2006, pp. 305-308.

Marko Jesenik, Viktor Goričan, Mladen Trlep, Anton Hamler, Bojan Štumberger, “The finite element method magnetic field calculation considering the material hysteresis,” EMF 2006: book of summaries, 2006, pp. 155-156.

Marko Jesenik, Viktor Goričan, Mladen Trlep, Anton Hamler, Bojan Štumberger, “Transient finite element magnetic field calculation method in the anisotropic magnetic material based on the measured magnetization curves,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e820-e822.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A compression method form FEM quadrilateral data,” 6th WSEAS Int. Conf. on Applied Computer Science (ACS'06), Tenerife, Spain, Dec. 2006, pp. 402-407.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A rapid algorithm for construction from a set of line segments,” 9th WSEAS Int. Conf. on Applied Mathematics (MATH'06), 5th WSEAS Int. Conf. on Telecommunications and informatics (TELE-INFO'06), 5th WSEAS Int. Conf. on Signal processing (SIP'06), Istanbul, Turkey, May 2006.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A tool for efficient transferring of triangular FEM elements through internet,” The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 220.

Tine Marčič, Miralem Hadžiselimović, Ivan Zagradišnik, Bojan Štumberger, “A study of magnetic flux density harmonics in a three phase squirrel-cage induction machine at ideal no-


load condition,” Electromagnetic fields in mechatronics, electrical and electronic engineering: proceedings of ISEF'05, 2006, pp. 396-401.

Tine Marčič, Bojan Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “An induction motor's magnetic field analysis and determination of its iron losses,” First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 69-70.

Dean Ogrizek, Mladen Trlep, “The dual reciprocity method used for electrical impedance tomography,” EHE'06, 2006, pp. 2.41-2.45.

Silvo Ropoša, Ivan Zagradišnik, Bojan Štumberger, Miralem Hadžiselimović, “Simplified approach for the universal motor performance calculation,” XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 37-38.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Anton Hamler, Mladen Trlep, Viktor Goričan, Marko Jesenik, “High-performance permanent magnet brushless motor with balanced concentrated windings and similar slot and pole numbers,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e829-e831.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Mladen Trlep, Anton Hamler, “Permanent magnet brushless DC motor; integrated motor drive electrical subsystem simulation,” First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 13-14.

Bojan Štumberger, Gorazd Štumberger, Miralem Hadžiselimović, Ivan Zagradišnik, “Torque ripple reduction in exterior-rotor permanent magnet synchronous motor,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e826-e828.

Bojan Štumberger, Gorazd Štumberger, Marko Jesenik, Viktor Goričan, Anton Hamler, Mladen Trlep, “Power capability and flux-weakening performance of interior permanent magnet synchronous motor with multiple flux barriers,” The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 416.

Gorazd Štumberger, Miralem Hadžiselimović, Bojan Štumberger, Damijan Miljavec, Drago Dolinar, Ivan Zagradišnik, “Comparison of capabilities of reluctance synchronous motor and induction motor,” Proceedings of the 17th International Symposium on Soft Magnetic Materials, Bratislava, Slovakia, Sep. 2006, Vol. 304, iss. 2, pp. e835-e837.

Gorazd Štumberger, Bojan Štumberger, Drago Dolinar, “Analysis of cross-saturation effects in a linear synchronous reluctance motor performed by finite element method and


measurements,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1907-1912.



Mladen Trlep, Anton Hamler, Marko Jesenik, Bojan Štumberger, “The impact of ground surface and conducting bodies under transmission lines on electric field distribution,” The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 429.

Mladen Trlep, Anton Hamler, Marko Jesenik, Bojan Štumberger, “The impact of ground surface configuration and conducting bodies located under overhead transmission lines on electromagnetic field distribution,” EHE'06, Coimbra, Portugal, 2006, pp. 1.59-1.63.

Peter Virtič, “2D magnetic field analysis in linear permanent magnet synchronous machine,” OWD'2006: VIII international workshop for candidates for a doctor's degree, Wisła, Poland, Oct. 2006, Vol. 2, pp. 383-386.

Peter Virtič, Bojan Štumberger, “2D analytical solution of magnetic field in linear permanent magnet synchronous machine; comparison of analitycal and numerical solution of magnetic field by permanent magnets,” First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 23-24.

Ivan Zagradišnik, Miralem Hadžiselimović, Tine Marčič, Bojan Štumberger, Gorazd Štumberger, “Heating analysis for explosion proof protected motors fed from 400V/50HZ and 460V/60HZ supply,” First Macedonian-Polish symposium on applied electromagnetics, Ohrid, Macedonia, Jun. 2006, pp. 71-72.

Miralem Hadžiselimović, Bojan Štumberger, “Določitev karakteristike vrtilnega momenta trifaznega asinhronskega motorja s pomočjo krožnega diagrama,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 379-382.

Miralem Hadžiselimović, Bojan Štumberger, “Določitev mehanske časovne konstante enosmernega servomotorja s trajnimi magneti na statorju,” Proceedings of the 15th


Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 383-386.

Miralem Hadžiselimović, Bojan Štumberger, “Določitev vzbujalnega toka sinhronskega generatorja s pomočjo ASA diagrama,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 423-426.

Miralem Hadžiselimović, Bojan Štumberger, “Meritev magnetnega polja in obremenilne karakteristike enofaznega asinhronskega motorja z zasenčenimi poli,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 387-390.


Marko Jesenik, Viktor Goričan, Mladen Trlep, Anton Hamler, Bojan Štumberger, “Magnetic field calculation based on the numerical consideration of the material hysteresis,” Proceedings, 12th International IGTE symposium on numerical fields calculation in electrical engineering, Graz, Austria, Sep. 2006, pp. 91-95.



Prof. Dr. Mladen Trlep: Member of international programme board, international conference, I International Conference on Electromagnetic Fields, Health and Environment, Madeira, Portugal, Apr. 27–29, 2006.

Prof. Dr. Mladen Trlep: Reviewer, international conference, I International Conference on Electromagnetic Fields, Health and Environment, Madeira, Portugal, Apr. 27–29, 2006.

Prof. Dr. Mladen Trlep, Asst. Prof. Dr. Bojan Štumberger, Matjaž Gaber:

Reviewer, international conference, The 12th Biennial IEEE Conference on Electromagnetic Fields Computation, Miami, United States, Apr. 30


to May 3, 2006.

Prof. Dr. Mladen Trlep: Member of editorial board, Guest Editor of the Przeglad Elektrotechniczny, international symposium, First Macedonian-Polish symposium on applied electromagnetics, Ohrid, The Former Yugoslav Republic Macedonia, June 8–10, 2006.

Prof. Dr. Mladen Trlep: Member of international programme board, international symposium, First Macedonian-Polish symposium on applied electromagnetics, Ohrid, The Former Yugoslav Republic Macedonia, June 8–10, 2006.

Prof. Dr. Mladen Trlep: Member of steering committee, international symposium, 7th International Sympusioum on Electric and Magnetic Fields, Aussois, France, June 19–22, 2006.

Prof. Dr. Mladen Trlep: Reviewer, international symposium, 7th International Sympusioum on Electric and Magnetic Fields, Aussois, France, June 19–22, 2006.

Asst. Prof. Dr. Marko Jesenik: Section chair, international symposium, 7th International Sympusioum on Electric and Magnetic Fields, Aussois, France, June 19–22, 2006.

Asst. Prof. Dr. Bojan Štumberger: Reviewer, international conference, International Conference on Magnetism, Kyoto, Japan, Aug. 20–25, 2006.

Prof. Dr. Anton Hamler: Reviewer for Material science & engineering.


Prof. Dr. Mladen Trlep: Participation at the International Conference on Electromagnetic Fields, Health and Environment, meeting participation, Madeira, Portugal, Apr. 27–29, 2006.

Asst. Prof. Dr. Bojan Štumberger: Participation at the scientific conference CEFC


2006 (The twelfth biennal IEEE conference on electromagnetic field computation), meeting participation, Miami, United States, Apr. 30 to May 3, 2006.

Anton Habjanič, Asst. Prof. Dr. Bojan Štumberger:

Participation at the First Macedonian-Polish symposium on applied electromagnetics, meeting participation, Ohrid, The Former Yugoslav Republic Macedonia, June 8–10, 2006.

Prof. Dr. Anton Hamler, Asst. Prof. Dr. Marko Jesenik:

Participation at the scientific international conference EMF 2006, meeting participation, Aussois, France, June 19–22, 2006.

Asst. Prof. Dr. Bojan Štumberger: Participation at the III Joint European Magnetic Symposia, meeting participation, San Sebastian, Spain, June 26–30, 2006.

Asst. Prof. Dr. Marko Jesenik: Participation at the International seminar on electromagnetic fields: the role of dosimetry in high-quality EMF risk assessment, meeting participation, 1000 Ljubljana, Slovenia, Sept. 13, 2006.

Asst. Prof. Dr. Marko Jesenik: Participation at the International seminar on electromagnetic fields: the role of dosimetry in high-quality EMF risk assessment, meeting participation, Zagreb, Croatia, Sept. 14–15, 2006.

Matjaž Gaber, Asst. Prof. Dr. Marko Jesenik:

Participation at the 12th International IGTE Symposium on Numerical Field Calculation in Electrical Engineering, meeting participation, Graz, Austria, Sept. 18–20, 2006.

Matjaž Gaber, Gorazd Hrovat:

Participation at the scientific international conference ERK 2006, meeting participation, Portorož, Slovenia, Sept. 25–27, 2006.

Asst. Prof. Dr. Bojan Štumberger: Participation at the scientific meeting of Polish society of applied electromagnetics, meeting participation, Wisla, Poland, Sept. 25–27, 2006.

Miloš Beković: CEEPUS sommer school for postgraduate


students, formal call, Gliwice, Poland, Oct. 16–20, 2006.

Miloš Beković: VIII International Phd Workshop OWD 2006, seminar participation, Wisla, Poland, Oct. 21–24, 2006.

GUESTS AND VISITORS

Lidija Petkovska (Faculty of Electrical Engineering, Ss. Cyril and Methodius University, Skopje, The Former Yugoslav Republic Macedonia):

Research work in the frame of the Bilateral Slovenian Macedonian Project, research work, Dec. 10–17, 2006.

Institute of Robotics RO - 1

INSTITUTE OF ROBOTICS

Head:

Prof. Dr. Karel Jezernik

Phone: +386 2 220 73 00


URL: http://www.ro.feri.uni-mb.si

The Institute of Robotics performs basic and applied research for the development and building of robotics systems, production automatization, sensor systems, control theory, modelling, identifications, computer process control, industrial robotics, servo-systems, robot controllers, and real-time control systems. We develop advanced-control algorithms for the control of position, speed, and torque with the use of various kinds of executive modules and constructions of robotic mechanisms. We continually develop and build new educational tools to improve the quality of the educational process and to introduce new technologies to students.

In the Kinematics and Simulation Laboratory, we conduct robot and robotization kinematics control and process simulation. We use both real and simulated controllers and mechanisms. Simulations deal with virtual and real systems and processes. We also investigate nonlinear and robust control for this reason.

In the Power Electronics Laboratory, we study electronic power devices. We research resonance converters and basic structures of DC/DC converters through modulation procedures.

The Institute of Robotics co-operates with many universities abroad. In the Socrates-Erasmus project we co-operate with Universidade do Minho - Portugal, Technische Universität

RO - 2 Institute of Robotics

Braunschweig - Germany, Technische Universität Wien - Austria, Universitat Politechnica de Catalunya - Spain, Universitat Rovira i Virgili - Spain, Loughborough University - United Kingdom. In the CEEPUS programme we co-operate with Technical University of Timisoara - Romania, Budapest University of Technology and Economics - Hungary, Cracow University of Technology - Poland, Vienna University of Technology - Austria in Technical University of Košice - Slovak republic.

The institute members are listed below by the laboratory with which they are affiliated.

Power Electronics Laboratory

Head: Prof. Dr. Miro Milanović

Industrial Robotics

Laboratory Head:


Kinematics and Simulations Laboratory

Head: Assoc. Prof. Dr. Peter Cafuta

Institute of Robotics Head:


Institute of Robotics RO - 3

Power Electronics Laboratory

Head: Prof. Dr. Miro Milanović

Employees: Asst. Prof. Dr. Franc Mihalič; Dr. Alenka Hren; Anton Otič; Mitja Truntič

Industrial Robotics Laboratory

Head: Prof. Dr. Karel Jezernik

Employees: Prof. Dr. Riko Šafarič; Asst. Prof. Dr. Martin Terbuc; Asst. Prof. Dr. Suzana Uran; Dr. Gregor Edelbaher; Asst. Prof. Dr. Aleš Hace; Asst. Prof. Dr. Miran Rodič; Dr. Andreja Rojko; Janez Pogorelc, MSc; Milan Čurkovič; Jože Harnik; Igor Hedrih; Aljaž Kapun; Jože Korelič; Dejan Kos; Rok Klobučar; Gregor Pačnik; Dr. Aleš Polič; Dr. Evgen Urlep; Jernej Otič.

Kinematics and Simulation Laboratory

Head: Assoc. Prof. Dr. Peter Cafuta Asst. Prof.

Employees: Asst. Prof. Dr. Boris Curk, Marijan Španer

RO - 4 Power Electronics Laboratory

POWER ELECTRONICS LABORATORY

Head:

Prof. Dr. Miro Milanovič

Phone: +386 2 220 73 30


RESEARCH PROJECTS



M2-0101 Sistem gorivnih celic kot pomožni vir energije za zagotavljanje avtonomnosti vojaških vozil (The Fuel cell system for auxiliary power source for military vehicles applications)

Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science)

Participants: Jože Korelič; Dr. Alenka Hren; Janko Horvat; Janez Pogorelc, MSc; Asst. Prof. Dr. Miran Rodič; Matej Gajzer, MSc


The main issues of the project work start with the feasibility study and energy storage principles. A review in the area of power electronics converters was also carried out. Due to the limited space in vehicles the thermal issues were the main point of interest. The problem of power buffering could be solved by using a super-capacitor or by using the batteries. In both cases thermal models of them are needed. To evaluate the system's behaviour mathematical models of converters, L-Ion batteries, Fuel-cell, and a Super-capacitor were investigated. The power management between different energy sources is studied with the possibility of applying the algorithm by using DSP unit TMS320 or appropriate FPGA circuits. From the results of this feasibility study, optimal control for power management will be performed.

Power Electronics Laboratory RO - 5

Industrial projects

STVPK Sodobne tehnologije vodenja za povečanje konkurenčnosti (Modern technologies for the increased competitive position)

Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Zoran Marinšek (INEA d.o.o.)

Participants: Jože Korelič, Milan Čurkovič, Dr. Gregor Edelbaher, Dr. Evgen Urlep, Darko Hercog, Marijan Španer, Anton Otič, Asst. Prof. Dr. Miran Rodič

Project partners: INEA d.o.o., Institut "Jozef Stefan", Premogovnik Velenje d.d.

Financed by: Ministry of Economics of the Republic of Slovenia, Premogovnik Velenje, d. d., European Union

The goal of the proposed project is to develop and build 500V and 1000 V, 4 Q inverters for use in Ex environment in underground coalmines. The equipment can be applied in transporters, pumps and ventilators. A system for the testing and building of converters and electro-motor drives will also be developed.

The Velenje Coalmine company is a big consumer of services in the area of automatization, where reliability and safety of applied solutions is of great importance. With the use of developed systems and technologies the company will be able to set more detailed demands regarding automatic control systems and, at the same time, will be able to influence the development of a solution, even before its final realization (verification of specifications). Thus, the level of satisfaction with the automatization service will be increased. The research team from the Institute of Robotics, within the framework of standardizing of software for control systems, also develops a system for automatic speed-sensorless control of induction motors. Thereby the reliability and safety of drive operations are improved. Additionally their energetic efficiency will be increased, resulting in reduced costs.


HySYS - FP6 EU Fuel Cell Hybrid Vehicle System Component Development

Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science), Joerg Wind (Daimler-Chrysler AG)

Participants: Asst. Prof. Dr. Miran Rodič Project partners: Centro Ricerche Fiat Societa Consortile per Azioni, Conti Temic

Microelectronic GmbH, Consejo Superior de Investigaciones Cientificas, AVL List GmbH, Volvo Technology Corporation, Ente per le Nuove Tecnologie, l'Energia e l'Ambiente, Saft S.A., Netherlands Organisation for Applied Scientific Research, Fischer


AG Praezisionsspindeln, FuMA-Tech Gesellschaft für funktionelle Membranen und Anlagentechnologie mbH, Rheinisch-Westfälische Technische Hochschule Aachen, Magna Steyr Fahrzeugtechnik AG & Co KG, MicroChemical Systems SA, Volkswagen AG, Selin Sistemi S.p.A., Rivoira S.p.A., Renault Recherche Innovation, ATB Technologies GmbH, Université de Montpellier, University of Applied Sciences Esslingen, Peugeot Citroën Automobiles, EPFL, Robert Bosch Gmbh

Financed by: Daimler-Chrysler AG, European Commission

The objective of the project is research on low-cost components for fuel cell (FC-) and electric-drive systems, which can be used in future hybridized FC-vehicles (medium term objective), and ICE vehicles.

Other goals of the project are: improvement of the fuel cell components and systems, improvement of the components and systems of electric drives in electric vehicles (synergies – FC and ICE hybrids), optimization of system architecture for the low energy consumption, development of low-cost components for mass production, and validation of components and system operation in the FC vehicles. Almost all major car producers in the EU are participating in the project. Additionally, leading companies and research institutions, dealing with the development and production of fuel cell systems and corresponding power electronics components are included. From the academic sphere five universities are participating.

Within our group, the research is performed in the field of electric motor control (IPMSM of 120 kW) in the vehicle driveline.

Hi-CEPS - FP6 EU Highly Integrated Combustion Electric Propulsion System

Leader: Vittorio Ravello (Centro Ricerche Fiat Societa Consortile per Azioni), Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science)

Participants: Asst. Prof. Dr. Miran Rodič Project partners: Ecole Nationale Supérieure de Mécanique et d'Aérotechnique

(ENSMA), EICAS Automazione S.p.A, Netherlands Organisation for Applied Scientific Research, Selin Sistemi S.p.A., Centre National de la Recherche Scientifique – CNRS, Saft S.A., Bertrandt AG, Department of Physical Chemistry, Uni Vienna, Aristotle University Thessaloniki, informatics department, Magna Steyr Fahrzeugtechnik AG & Co KG, Faculty of Electrical Engineering and Computer Science, Getrag Ford Transmissions Sweden AB, Peugeot Citroën Automobiles, Eneftech Innovation SA, Ricardo UK Limited, Ecocat Oy, Centro Ricerche Fiat Societa Consortile per Azioni, FEV


Motorentechnik GmbH, Ford Research Centre Aachen, Rheinisch-Westfälische Technische Hochschule Aachen, University of L'Aquila, AVL List GmbH, Center for Research and Technology


The main objective of the project is to conduct research into innovative and cost competitive highly integrated thermal-electric hybrid configurations for mass produced vehicles for the European market from 2010/2012.

Requirements:

•“social needs” (lower consumption and acoustic/regulated emissions reduction) and

•“customer demands” (enhanced performance, improved drivability, high thermal comfort, acceptable cost for purchase and operation).

System analyses and verification tests will be performed for split hybrid powertrains with two different hybrid vehicle platforms, and for a combined one with a dedicated test bench. The outcome will be used for a complete assessment and comparison (both at technical level and in terms of cost).

Three different complex hybrid solutions, each with different engines, (gasoline, diesel and natural gas) and a comprehension of the related after treatment systems will be investigated. In order to ensure significant synergy between the developed solutions, each will share the electric device's technology and all the possible parts of the related devices. Relevant results and solutions deriving from past and on-going EU and national projects will be used wherever possible.

The activities of our group will be focused on the design of power electronics converters and control of the electric motor in driveline.


Industrial project

AIZ Generator in 3 fazni AC- enofazni AC pretvornik za napajanje 4 kW-nih izmeničnih bremen (Generator and three phase AC to single AC converter for 4KW alternating load supply)


Participants: Matej Gajzer, Dr. Evgen Urlep, Jože Korelič, Primož Šlibar, Dr. Alenka Hren, Dejan Kos

Project partners: Iskra Avtoelektrika d.d., Tehnološki center za električne stroje


Financed by: Iskra Avtoelektrika, d. d., Tehnološki center za električne stroje


The three-phase to single-phase converter was developed and tested in the laboratory. The three-phase input voltage was changed to between 30-225V and the frequency was changed to between 80-430Hz. The converter supplies a load of 4300 W with constant voltages of 220V and frequency 50Hz. The project was concluded in June 2006.

MOGEUS Motor-Generator in AC-DC pretvornik za brezkontaktni prenos energije na rotirajoče telo (Motor-Generator and AC-DC converter for contact less energy transfer on rotating part)


Participants: Jože Korelič, Dejan Kos, Asst. Prof. Dr. Miran Rodič, Primož Šlibar, Matej Gajzer, Anton Otič, Asst. Prof. Dr. Franc Mihalič

Project partners: Tehnološki center za električne stroje, KolektorGroup d.o.o.


Duration: May 2005 to Dec. 2006

A power electronics system with power factor correction was developed for the KolektorGroup, d. o. o. company. Such a principle enables optimal energy transfer from the generator to the load by means of minimal dissipation on the power converter. Investigation and design were performed on the contact-less energy transfer of 1500 W for the rotating display. The project was concluded on December 2006.

RESPRE Resonančni pretvornik za brezkontaktni prenos energije na rotirajoče telo (Resonant converter for contact lees energy transfer on rotating part)


Participants: Jože Korelič, Primož Šlibar, Mitja Truntič Project partners: KolektorGroup d.o.o., Technologycal center for electric machines


Duration: Mar. 2005 to Dec. 2006


The aim of the project was to solve the energy transfer on a rotating part. A resonant converter carried out with four MOS-FET was chosen. Output voltage on the rotating part was regulated. Energy transferred to the load was 600W (project desired output power was 500W).

PUBLICATIONS

Alenka Hren, Jože Korelič, Miro Milanovič, “RC-RCD clamp circuit for ringing losses reduction in a flyback converter,” IEEE trans. circuits syst., 2 Analog digit. signal process., Vol. 53, No. 5, pp. 369-373, May 2006.

Franc Mihalič, Dejan Kos, “Reduced conductive EMI in switched-mode DC-DC power converters without EMI filters: PWM versus randomized PWM,” IEEE trans. power electron., Vol. 21, No. 6, pp. 1783-1794, Nov. 2006.

Miro Milanovič, Jože Korelič, Alenka Hren, Franc Mihalič, Primož Šlibar, “Reduction of ringing losses in flyback converter by using the RC-RCD clamp circuit,” Automatika (Zagreb), God 47, br. 1/2, pp. 31-37, 2006.

Aljaž Kapun, Miro Milanovič, Jože Korelič, “Voltage ripple cancellation in buck converter based on hybrid structured connection,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 112-117.

Ludvik Kolman, Miro Milanovič, Alenka Hren, “An isolated single-phase rectifier with power factor correction,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 695-700.

Franc Mihalič, Dejan Kos, Miran Rodič, Miro Milanovič, “Snubbers in the three-phase AC to DC buck converter,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 940-945.

Miro Milanovič, Mitja Truntič, Jože Korelič, Primož Šlibar, Valentin Koblar, “Contact-less energy transfer carried out by resonant-link based AC-DC converter,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 733-738.

Mitja Truntič, Miro Milanovič, “Step down converter controlled by fuzzy logic control system with genetic algorithm membership optimization,” XIX Symposium Electromagnetic Phenomena in Nonlinear Circuits, Maribor, Slovenia, Jun. 2006, pp. 115-116.



Miro Milanovič: “5th technology transfer day for Chamber of craft of Slovenia,” sensors on the basis of optical fibers (Donlagic), influence of electronic load on network (Milanovic), LCD technologies and their practical use (Kramberger), Maribor, Slovenia, Feb. 17, 2006.


Dr. Alenka Hren: Organising committee member, international conference, The 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 30 to Sept. 1, 2006.

Asst. Prof. Dr. Franc Mihalič: Proceedings editor, international conference, The 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 30 to Sept. 1, 2006.

Prof. Dr. Miro Milanovič: Programme committee chairman, international conference, The 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 30 to Sept. 1, 2006.

Mitja Truntič, Prof. Dr. Miro Milanovič, Asst. Prof. Dr. Franc Mihalič, Dr. Alenka Hren:

Reviewer, international conference, The 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 30 to Sept. 1, 2006.

Dr. Alenka Hren: Reviewer, international symposium, 2006 IEEE International Symposium on Industrial Electronics, Montreal, Canada, Sept. 7–13, 2006.

Dr. Alenka Hren, Asst. Prof. Dr. Franc Mihalič:

Reviewer, international conference, The 32nd Annual Conference of the IEEE Industrial Electronics Society, Paris, France, Nov. 5–8, 2006.

Prof. Dr. Miro Milanovič: Reviewer for IEEE Transactions on Power Electronics.

Asst. Prof. Dr. Franc Mihalič: Reviewer for IEEE Transactions on Industrial Electronics.



Prof. Dr. Miro Milanovič, Asst. Prof. Dr. Miran Rodič:

Workgroup meeting for EU FP-6 project HySYS, research center of Magna., project meeting participation, Graz, Austria, Mar. 29, 2006.


Kick-off meeeting for EU FP-6 project HI-CEPS, research center of Fiat., project meeting participation, Torino, Italy, Sept. 11–12, 2006.


HySYS General assembly., project meeting participation, Graz, Austria, Nov. 14–15, 2006.

Asst. Prof. Dr. Miran Rodič, Mitja Truntič:

Meeting for the definition of future activities in EU FP-6 project HySYS, research centre of Daimler-Chrysler., project meeting participation, Stutgart, Germany, Nov. 29, 2006.


Visit to the fuel cell development and testing laboratories, research institute of AVL., project meeting participation, Graz, Austria, Dec. 20, 2006.

GUESTS AND VISITORS

Yehia Tadros (Daimler-Chrysler AG, Sindelfingen, Germany):

Visit at Institute of Robotics, presentation of Institute activities, discussion regarding activities in the frame of HySYS and future cooperation possibilities, visit, Sept. 4, 2006.

RO - 12 Industrial Robotics Laboratory

INDUSTRIAL ROBOTICS LABORATORY

Head:


Phone: +386 2 220 73 00


RESEARCH PROJECTS


Applied projects

L2-6164 Ekspertni sistem za načrtovanje vodenje in regulacije asihronskega motorja (Expert system for designing of induction motor control)

Leader: Dr. Franci Lahajnar (KolektorGroup d.o.o.) Participants: Milan Čurkovič, Jože Korelič, Asst. Prof. Dr. Miran Rodič, Prof. Dr.

Karel Jezernik

Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia, KolektorGroup, d. o. o.

The goal of the proposed project was to develop an expert system that enables rapid engineering of motor control systems. The main emphasis was on the development of software and hardware for the control of induction motors.

Within the framework of software development, we were engaged in the implementation, analysis and testing of previously proposed methods of induction motor control, where special attention was on speed sensorless control. In the last phase of the project, software for position and speed control of the servodrive using a trapeze profile was developed.

Development of a generic induction motor control hardware system, on the basis of which rapid development of the systems, specified by the customers, will be possible in the future, was carried out.

The focus of future work will be the research and potential breakthroughs with new or improved methods in the area of low speed, and sensorless induction motor control.

Industrial Robotics Laboratory RO - 13

On the basis of the achieved results the project will be concluded with the development of an expert system which, with its features of automatic code generation, will enable rapid development of custom designed systems.


M2-0101 Sistem gorivnih celic kot pomožni vir energije za zagotavljanje avtonomnosti vojaških vozil (The Fuel cell system for auxiliary power source for military vehicles applications)


Participants: Jože Korelič; Dr. Alenka Hren; Janko Horvat; Janez Pogorelc, MSc; Asst. Prof. Dr. Miran Rodič; Matej Gajzer, MSc


The main issues of the project work starts with the feasibility study and energy storage principles. A review in the area of power electronics converters was also carried out. Due to the limited space in vehicles, the thermal issues were the main point of interest. The problem of power buffering could be solving by using of super-capacitor or by using the batteries. In both cases thermal models of them are needed. To evaluate the system's behaviour, mathematical models of converters, L-Ion batteries, Fuel-cell, and Super-capacitor were investigated. Power management between different energy sources is studied with the possibility of applying the algorithm by using DSP unit TMS320 or appropriate FPGA circuits. From the results of this feasibility study, optimal control for power management will be performed.

SS-U1.1 Policentrični tehnološki center kot mednarodni inovacijski sistem slovenske avtomobilske dobaviteljske industrije – Strukturni skladi, Ukrep 1.1: Spodbujanje inovacijskega okolja

Leader: Asst. Prof. Dr. Aleš Hace (Faculty of Electrical Engineering and Computer Science), Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science)

Participants: Aljaž Kapun, Dr. Gregor Edelbaher, Dejan Kos, Milan Čurkovič, Prof. Dr. Anton Hamler

Project partners: Faculty of Electrical Engineering and Computer Science, AET, d.o.o., Iskra Industrija sestavnih delov d.d., Iskra MEHANIZMI, d.d.

Within the project we are developing new mechatronic systems for the European automotive


industry in cooperation with Iskra Mehanizmi d.d.. Thus our activities are directed toward the development of new types and control of stepping motors.

CO STV RRP3 Center odličnosti za sodobne tehnologije vodenja - RR projekt: AK3a-3 (Center of Exelence for Advanced Control Technologies - R&D Project: AK3a-3)


Participants: Asst. Prof. Dr. Martin Terbuc; Aleksander Polutnik, MSc; Alojz Hojnik; Božidar Bratina; Asst. Prof. Dr. Marjan Golob; Asst. Prof. Dr. Nenad Muškinja

Project partners: Inštitut Jožef Stefan, Faculty of Electrical Engineering and Computer Science, Špica International, INEA d.o.o., TELEM d.o.o.., Faculty of Electrical Engineering, Univesity of Ljubljana

Financed by: Ministry of Higher Education, Science and Technology of the Republic of Slovenia, European Union

The main objective of the project part (PP) «The technologies of the remote and distributed control« within the complete project »The Centre of Excellence for modern technology control« is to perform research and development (R&D) activities in the area of new communication technologies for the purpose of remote and distributed control. The research results of the (R&D) activities will be verified with the (R&D) subprojects and the demonstration project which will expose the usage of new cognitions, methods and the elements of the newest communication technologies for need in system control.

The motivation to perform the PP is to raise the competitive capabilities of the Slovene economy, as well as of the users and providers- the project members- of the system's control. Greater competition capability depends on a capability to follow the fast development of communication technologies and implementation of them in an industrial setting.

The interest of the project's investors – the project's partners is to join the individual R&D of the activities into a unified R&D project. The corner point of the research will be in the following areas:

- the use of the newest communication technologies in the systems of remote and distributed control

- the development of elements and subsystems for remote and distributed system management

- the development of methodology for safety assurance and an analysis of the stability functioning of industrial remote control systems,


- the use on open source technology based program solutions for the purpose of remote and distributed control and

- the distribution of the results and the education of workers with knowledge in the area of using open-source, by the development of the modern systems of remote and distributed control.

Industrial projects

STVPK Sodobne tehnologije vodenja za povečanje konkurenčnosti (Modern technologies for the increased competitive position)

Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Zoran Marinšek (INEA d.o.o.)

Participants: Jože Korelič, Milan Čurkovič, Dr. Gregor Edelbaher, Dr. Evgen Urlep, Darko Hercog, Marijan Španer, Anton Otič, Asst. Prof. Dr. Miran Rodič

Project partners: INEA d.o.o., Institut "Jozef Stefan", Premogovnik Velenje d.d.

Financed by: Ministry of Economics of the Republic of Slovenia, Premogovnik Velenje, d. d., European Union

The goal of the proposed project was to develop and build 500V and 1000 V, 4 Q inverters for the use in Ex environment in underground coalmines. The equipment can be applied in transporters, pumps and ventilators. Also a system for the testing and building of converters and electro-motor drives was developed.

The Velenje Coalmine company is a big consumer of services in the area of automatization, where the reliability and safety of applied solutions is of great importance. With the use of developed systems and technologies, the company is able to set more detailed demands regarding automatic control systems and, at the same time, was able to influence the development of the solution already before its final realization (verification of specifications). Thus the level of satisfaction with automatization service was increased. The research team from the Institute of Robotics, within the framework of standardizing software for control systems, was also developed a system for automatic speed-sensorless control of induction motors. Thereby, the reliability and safety of drives' operation are improved. Additionally their energetic efficiency was increased, resulting in reduced costs.



Hi-CEPS - FP6 EU Highly Integrated Combustion Electric Propulsion System

Leader: Vittorio Ravello (Centro Ricerche Fiat Societa Consortile per Azioni), Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science)

Participants: Asst. Prof. Dr. Miran Rodič Project partners: Ecole Nationale Supérieure de Mécanique et d'Aérotechnique

(ENSMA), EICAS Automazione S.p.A, Netherlands Organisation for Applied Scientific Research, Selin Sistemi S.p.A., Centre National de la Recherche Scientifique – CNRS, Saft S.A., Bertrandt AG, Department of Physical Chemistry, Uni Vienna, Aristotle University Thessaloniki, informatics department, Magna Steyr Fahrzeugtechnik AG & Co KG, Faculty of Electrical Engineering and Computer Science, Getrag Ford Transmissions Sweden AB, Peugeot Citroën Automobiles, Eneftech Innovation SA, Ricardo UK Limited, Ecocat Oy, Centro Ricerche Fiat Societa Consortile per Azioni, FEV Motorentechnik GmbH, Ford Research Centre Aachen, Rheinisch-Westfälische Technische Hochschule Aachen, University of L'Aquila, AVL List GmbH, Center for Research and Technology


The main objective of the project is to conduct research into innovative and cost-competitive highly integrated thermal-electric hybrid configurations for mass produced vehicles for the European market from 2010/2012.

Requirements:

•“social needs” (lower consumption and acoustic/regulated emissions reduction) and

•“customer demands” (enhanced performance, improved drivability, high thermal comfort, acceptable cost for purchase and operation).

System analyses and verification tests will be performed for split-hybrid powertrains with two different hybrid vehicle platforms, and for a combined one with a dedicated test bench. The outcome will be used for a complete assessment and comparison (both at technical level and in terms of cost).

Three different complex hybrid solutions, each with different engines, (gasoline, diesel and natural gas), and a comprehension of the related after-treatment systems will be investigated. In order to ensure significant synergy between the developed solutions, each will share the electric devices technology and all the possible parts of the related devices. Relevant results and solutions deriving from past and on-going EU and national projects will be used wherever possible.


The activities of our group will be focused on the design of power electronics converters and the control of the electric motor in driveline.

EDIPE E-learning Distance Interactive practical Education, Leonardo da Vinci CZ/06/B/PP-168022

Leader: Pavol Bauer (Delft University of Technology) Participants: Prof. Dr. Karel Jezernik, Istvan Nagy, Vitezslav Hajek, Dusan Maga,

Bernard Davat, Marian P. Kazmierkowski, Dan Lascu, Stefanos Manias, Andreas Steiml, Thomas Wolbank, Pavol Bauer, Asst. Prof. Dr. Suzana Uran, Darko Hercog, Viliam Fedak

Project partners: Faculty of electrical engineering and communication, Brno University of Technology, Dept. of Electrical and Computer Engineering, National Technical University of Athens, Institute of Electrical Drives and Machines, Delft University of Technology, Faculty of Electrical Engineering and Computer Science, Institute for Electrical Power Engineering and Power Electronics, Ruhr Uni Bochum, Institut National Polytechnique de Lorraine, ENSEM, Department of Automation and Applied Informatics at BUTE, Institute of Control and Industrial Electronics, Warsaw University of Technology, Politehnica University Timisoara, Electronics and Telecommunications Faculty, Technical University of Kosice, Faculty of Electrical Engineering and Informatics, Faculty of Mechatronics, Alexander Dubcek University in Trencin


Recent progress in information and communication technology brings out many different possibilities for using the Internet in educational processes among others, also the use of remote-laboratories. Remote labs contain a set of real experiments, which are physically placed in the classical labs, while the user can access and execute these experiments from a remote-computer. European project „E-learning Distance Interactive Practical Education” (EDIPE) is a Leonardo da Vinci project that involves 14 partners from different parts of the European Union. The main aim of this project is the development of remote experiments in the field of Electrical Engineering fundamentals, through electronics, power electronics and the dynamics of electro-mechanical systems. In total, 18 different remote experiments will be realized, while the main emphasis will be given on the quality of learning materials.

HySYS - FP6 EU Fuel Cell Hybrid Vehicle System Component Development

Leader: Prof. Dr. Miro Milanovič (Faculty of Electrical Engineering and Computer Science), Joerg Wind (Daimler-Chrysler AG)

Participants: Asst. Prof. Dr. Miran Rodič


Project partners: Centro Ricerche Fiat Societa Consortile per Azioni, Conti Temic Microelectronic GmbH, Consejo Superior de Investigaciones Cientificas, AVL List GmbH, Volvo Technology Corporation, Ente per le Nuove Tecnologie, l'Energia e l'Ambiente, Saft S.A., Netherlands Organisation for Applied Scientific Research, Fischer AG Praezisionsspindeln, FuMA-Tech Gesellschaft für funktionelle Membranen und Anlagentechnologie mbH, Rheinisch-Westfälische Technische Hochschule Aachen, Magna Steyr Fahrzeugtechnik AG & Co KG, MicroChemical Systems SA, Volkswagen AG, Selin Sistemi S.p.A., Rivoira S.p.A., Renault Recherche Innovation, ATB Technologies GmbH, Université de Montpellier, University of Applied Sciences Esslingen, Peugeot Citroën Automobiles, EPFL, Robert Bosch Gmbh

Financed by: Daimler-Chrysler AG, European Commission

The aims of the project are:

- Fuel cell (FC) system and component improvements

- Component improvement for electric vehicle drives (synergy FC in ICE-hybrid)

- System architecture optimization for less consumption, high efficiency and reliability

- Optimization of energy consumption

- Development of cheap components for mass production

- Component and system evaluation for FC

SLO-TR/1 Sliding modes in motion control systems

Leader: Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science), Prof. Dr. Asif Šabanović (Sabanci University)

Participants: Dr. Andreja Rojko, Kemalettin Erbatur, Gokhan Goktug, Asst. Prof. Dr. Aleš Hace, Dr. Ahmet Onat, Asst. Prof. Dr. Miran Rodič, Asst. Prof. Dr. Suzana Uran

Financed by: TUBITAK, Slovenian Research Agency

This project comprises the development of new robust motion control algorithms that will include some recent advances in sliding mode control. Special attention will be devoted to the research of elastic servodrives and robot mechanisms.


29298-IC-1-2003-1-AT-ERASMUS-PROGUC-1

SOCRATES ERASMUS Project MARE – Joint European Master Degree Programme »Remote Engineering«

Leader: Michael Auer (Carinthia Tech Institute) Participants: Prof. Dr. Riko Šafarič, Rajko Svečko, Živa Hohnjec, Matjaž Debevc,

Andrej Knuplež


The main task of the project MARE is to elaborate a complete new joint curriculum in the field of »Remote Engineering«. The programme is planned as a joint master's degree programme.

The use of virtual and remote laboratories and workplaces is one of the future directions for advanced teleworking/e-working environments, especially in engineering and science but also in all other areas of society. This would also provide a benefit for people with special needs and people working from their home.

All over the world there is a lack of specialists in this field and the number of needed specialists will increase dramatically over the next few years.

The general objective of the curriculum is to mediate fundamentals, applications and experiences in the field of remote engineering by an interdisciplinary approach in combination with »learning by doing« phases. In this way we create, in Europe, a unique possibility to study »Remote Engineering«.

Technology-enhanced learning in a dual mode will be the central didactic approach.

The study program is open to students from all over and outside Europe and requires a bachelor degree in engineering or in the science of informatics.

Graduates will be able to work in remote working environments and to develop such environments.

This project represents an important contribution to the information Society Policies (Lisbon Agenda) and the eEurope Action.

SLO-HR/1 Robot visual servoing

Leader: Asst. Prof. Dr. Aleš Hace (Faculty of Electrical Engineering and Computer Science), Asst. Prof. Dr. Mirjana Bonković (Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture,University of Split)

Participants: Darko Hercog, Liljana Bodrožič, Majda Štula, Darko Stipaničev, Prof. Dr. Riko Šafarič, Rok Klobučar, Prof. Dr. Karel Jezernik


Financed by: Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture,University of Split, Faculty of Electrical Engineering and Computer Science

Computer vision enables non-contact environment sensation and introduces a new paradigm in the field of intelligent robot control. It can be applied to humanoid robots, automatic vehicle steering without humans, flexible manufacturing systems, telerobotics, and teleoperation systems, etc. Our research project deals with robot visual control. In robot visual servoing, such as Image Based Visual Servoing (IBVS) approach, only vision information is utilized in the position feedback. Here, the control signal is computed directly from the image features, thus the knowledge of compound Jacobian matrix may be required. In this case, the robot, along with the vision system, must be calibrated prior to the operation. In our research we develop algorithms for uncalibrated visual servoing.


Industrial project

AIZ Generator in 3 fazni AC- enofazni AC pretvornik za napajanje 4 kW-nih izmeničnih bremen (Generator and three phase AC to single AC converter for 4KW alternating load supply)


Participants: Matej Gajzer, Dr. Evgen Urlep, Jože Korelič, Primož Šlibar, Dr. Alenka Hren, Dejan Kos

Project partners: Iskra Avtoelektrika d.d., Tehnološki center za električne stroje

Financed by: Iskra Avtoelektrika, d. d., Tehnološki center za električne stroje


A three-phase to single-phase converter was developed and tested in the laboratory. The three-phase input voltage was changed to between 30-225V and the frequency was changed to between 80-430Hz. The converter supplies a load of 4300 W with constant voltages of 220V and frequency 50Hz. The project was concluded in June 2006.


RESPRE Resonančni pretvornik za brezkontaktni prenos energije na rotirajoče telo (Resonant converter for contact lees energy transfer on rotating part)


Participants: Jože Korelič, Primož Šlibar, Mitja Truntič Project partners: KolektorGroup d.o.o., Technologycal center for electric machines



The aim of the project was to solve the energy transfer on a rotating part. A resonant converter carried out with four MOS-FET was chosen. Output voltage on a rotating part is regulated. Energy transferred to the load was 600W (project desired output power was 500W).

MOGEUS Motor-Generator in AC-DC pretvornik za brezkontaktni prenos energije na rotirajoče telo (Motor-Generator and AC-DC converter for contact less energy transfer on rotating part)


Participants: Jože Korelič, Dejan Kos, Asst. Prof. Dr. Miran Rodič, Primož Šlibar, Matej Gajzer, Anton Otič, Asst. Prof. Dr. Franc Mihalič

Project partners: Tehnološki center za električne stroje, KolektorGroup d.o.o.


Duration: May 2005 to Dec. 2006

A power electronics system with power factor correction was developed for the KolektorGroup, d. o. o. company. Such a principle enables optimal energy transfer from the generator to the load by means of minimal dissipation on the power converter. Investigation and design were performed of the contact-less energy transfer of 1500 W for rotating display. The project was concluded on December 2006.



101-E-VINTER (71-751-03 0305 0004)

Phare 2003 - Creating an innovative learning environment, e-skill, and competence development, supporting the informal-lifelong-learning-form enforcement

Leader: Borka Jerman Blažič (Institut "Jozef Stefan"), Prof. Dr. Karel Jezernik (Faculty of Electrical Engineering and Computer Science)

Participants: Asst. Prof. Dr. Suzana Uran; Živa Hohnjec; Jernej Otič; Matjaž Debevc; Jože Korelič; Janez Pogorelc, MSc

Project partners: Faculty of Electrical Engineering and Computer Science, Inštitut Jožef Stefan, SETCCE, Center RS za poklicno izobraževanje



In accordance with the PHARE 2003 ’’Lifelong learning’’ priority areas and guidelines, as well as national and European policy on the meaning and evaluation of informal learning, the E-VINTER project ensures the shift from standard learning forms and classical classrooms towards the creation of an innovative and stimulative learning environment for the acquisition of knowledge, especially e-skills and e-competences, which support personal and professional growth.

The E-VINTER project has met its objectives with three concrete working packages:

· Establishment of an Expert Centre for Evaluation, Standardization, and Counselling for the purposes of selecting optimal e-tools for the establishment of e-learning environments,

· Development of e-skills and competences within the framework of preparations for the national vocational training qualification, and

· A pilot implementation of training through the established innovative learning environments in the designated regions: the Drava Region, the Mura Region, and Carinthia.

The efficient implementation of the project is granted by the modern methods of knowledge transfer and quality partnership which, in accordance with the policy of harmonious regional development, places the achievements of the research and development sphere into regional/ local environments.

PUBLICATIONS

Gregor Edelbaher, Karel Jezernik, Evgen Urlep, “Low-speed sensorless control of induction machine,” IEEE trans. ind. electron. (1982. Print), Vol. 53, No. 1, pp. 120-129, Feb. 2006.


Alenka Hren, Jože Korelič, Miro Milanovič, “RC-RCD clamp circuit for ringing losses reduction in a flyback converter,” IEEE trans. circuits syst., 2 Analog digit. signal process., Vol. 53, No. 5, pp. 369-373, May 2006.

Franc Mihalič, Dejan Kos, “Reduced conductive EMI in switched-mode DC-DC power converters without EMI filters: PWM versus randomized PWM,” IEEE trans. power electron., Vol. 21, No. 6, pp. 1783-1794, Nov. 2006.

Miro Milanovič, Jože Korelič, Alenka Hren, Franc Mihalič, Primož Šlibar, “Reduction of ringing losses in flyback converter by using the RC-RCD clamp circuit,” Automatika (Zagreb), God 47, No. 1/2, pp. 31-37, 2006.

Miran Rodič, Karel Jezernik, Mladen Trlep, “Dynamic emulation of mechanical loads: and advanced approach,” IEE proc., Electr. power appl., Vol. 153, No. 2, pp. 159-166, Mar. 2006.

Miran Rodič, Karel Jezernik, Mladen Trlep, “Mechatronic systems` control design using dynamic emulation of mechanical loads,” Automatika (Zagreb), 47, 1/2, pp. 11-18, 2006.

Suzana Uran, Darko Hercog, Karel Jezernik, “Remote lab experiment RC oscillator for learning of control,” Int. j. online eng., Vol. 2, No. 4, 2006.

Karl Benkič, Jernej Otič, Marko Malajner, Peter Planinšič, “Teaching "communications in automation" through practical accession with independent student projects,” 48th International symposium ELMAR-2006 focused on multimedia signal processing and communications, Zadar, Croatia, Jun. 2006, pp. 279-283.

Mirjana Bonković, Aleš Hace, Karel Jezernik, “A new method for uncalibrated visual servoing,” 9th IEEE International workshop on advanced motion control, AMC'06, Istanbul, Turkey, Mar. 2006, pp. 624-629.

Simon Brezovnik, Riko Šafarič, Karl Gotlih, Miran Brezočnik, “Zasnova in izvedba robotske celice za uporovno točkovno varjenje,” Rast obsega - potrebni pogoj za uspeh: dobavitelj - kupec - orodjar: zbornik posvetovanja, Portorož, Slovenia, Oct. 2006, pp. 93-94.

Mehmet Dal, Karel Jezernik, “Experimental comparison of disscrete time sliding mode and conventional, PI current controllers for IM drives,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1155-1160.

Gregor Edelbaher, Branko Fošner, Jože Korelič, Evgen Urlep, Milan Čurkovič, Miran Rodič, “Sensorless control of IM in mining applications,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1842-1843.


Gregor Edelbaher, Evgen Urlep, Milan Čurkovič, Jože Korelič, Branko Fošner, “Uvajanje reguliranih pogonov v Premogovniku Velenje,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 375-378.

Aleš Hace, Aleš Polič, Karel Jezernik, “Rapid control prototyping of mechatronic systems,” The 32nd Annual Conference of the IEEE Industrial Electronics Society, Paris, France, Nov. 2006.

Darko Hercog, Milan Čurkovič, Karel Jezernik, “DSP based rapid control prototyping systems for engineering education and research,” Proceedings of the IEEE International Conference on Control Applications (CCA), International Conference on Computer Aided Control Systems design (CACSD), and International Symposium on Intelligent Control (ISIC), Munchen, Germany, Oct. 2006, pp. 2292-2297.

Darko Hercog, Bruno Villaca, Bojan Gergič, Martin Terbuc, “Moodle booking system for remote experiments,” International Symposium Remote Engineering Virtual Instrumentation, Maribor, Slovenia, Jun. 2006.

Karel Jezernik, Aleš Polič, Aleš Hace, “Rapid prototyping of mechatronic systems with mixed continuous and discrete-event dynamics,” IEEE 3rd International conference on mechatronics also [ICM 2006], Budapest, Hungary, Jul. 2006, pp. 242-247.

Aljaž Kapun, Dejan Kos, Karel Jezernik, “Implementacija metode za redukcijo nihanja navora koračnega motorja na FPGA sistemu,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 427-430.

Aljaž Kapun, Miro Milanovič, Jože Korelič, “Voltage ripple cancellation in buck converter based on hybrid structured connection,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 112-117.

Rok Klobučar, “Uncalibrated visual servo control for 2 DOF parallel manipulator,” Tagungsband REMUS'06: Internationale Konferenz, 2006, pp. 157-162.

Dejan Kos, Milan Čurkovič, Karel Jezernik, “FPGA based BLDC motor current control with spectral analysis,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1217-1222.

Dejan Kos, Aljaž Kapun, Milan Čurkovič, Karel Jezernik, “Efficient stepper motor torque ripple minimization based on FPGA hardware implementation,” The 32nd Annual Conference of the IEEE Industrial Electronics Society, Paris, France, Nov. 2006.


Franc Mihalič, Dejan Kos, Miran Rodič, Miro Milanovič, “Snubbers in the three-phase AC to DC buck converter,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 940-945.

Miro Milanovič, Mitja Truntič, Jože Korelič, Primož Šlibar, Valentin Koblar, “Contact-less energy transfer carried out by resonant-link based AC-DC converter,” EPE-PEMC 2006: conference proceedings, 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 733-738.

Jernej Otič, Karl Benkič, Peter Planinšič, “Education of remote control, communications and computer vision by a small electric vehicle controlled remotely over the internet,” IWSSIP 2006: proceedings of the 13th International Workshop on Systems, Signals and Image Processing [and] proceedings COST 292 special session Semantic Multimodal analysis of digital media, Budapest, Hungary,2006, pp. 411-414.

Jernej Otič, Peter Planinšič, “Small electric vehicle guided remotely by wireless and the internet communication, using a video camera,” International Symposium Remote Engineering Virtual Instrumentation, Maribor, Slovenia, Jun. 2006.

Gregor Pačnik, Rok Klobučar, “Parametric reconstruction of a scene from two views,” Tagungsband REMUS'06: Internationale Konferenz, 2006, pp. 193-198.

Janez Pogorelc, “E-učenje tehniških vsebin,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 333-336.

Aleš Polič, Karel Jezernik, “Event-driven control strategy for a three phase inverter,” ISIE 2006: program, International Symposium on Industrial Electronics 2006, Montreal, Canada, Jul. 2006, pp. 1442-1447.

Aleš Polič, Karel Jezernik, “FPGA based discrete event current control strategy for a three phase inverter,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 246-251.

Aleš Polič, Karel Jezernik, “Uporaba DSP2 - ROBY krmilnika v robotiki,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 143-146.

Aleš Polič, Evgen Urlep, Karel Jezernik, “Speed sensorless variable structure and event driven torque control of PMSM,” 9th IEEE International workshop on advanced motion control, AMC'06, Istanbul, Turkey, Mar. 2006, pp. 553-558.


Miran Rodič, Uroš Rupar, Jože Korelič, Karel Jezernik, “Automatic approach to parameter scaling in induction motor control algorithms,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1211-1216.

Asif Šabanović, S. Khan, M. Elitas, Karel Jezernik, “Sliding mode adaptive controller for PZT actuators,” The 32nd Annual Conference of the IEEE Industrial Electronics Society, Paris, France, Nov. 2006.

Riko Šafarič, Marjan Plenjšek, Darko Hercog, “Telerobotics experiments with LEGO mindstorm,” International Symposium Remote Engineering Virtual Instrumentation, Maribor, Slovenia, Jun. 2006.

Martin Terbuc, “Use of free/open source software in e-education,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1737-1742.

Martin Terbuc, Gregor Globačnik, Karel Jezernik, “Distribucija GNU/Linuxa za elektrotehnike,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 71-74.

Suzana Uran, Darko Hercog, Karel Jezernik, “Matlab web server and web-based control design learning,” The 32nd Annual Conference of the IEEE Industrial Electronics Society, Paris, France, Nov. 2006.

Suzana Uran, Darko Hercog, Karel Jezernik, “Remote lab experiment RC oscilator for learning of control,” International Symposium Remote Engineering Virtual Instrumentation, Maribor, Slovenia, Jun. 2006

Suzana Uran, Karel Jezernik, “MATLAB web server and M-file application,” EPE-PEMC 2006: conference proceedings, 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 2088-1092.

Evgen Urlep, Janko Horvat, Karel Jezernik, “Pseudo sensorless control of PMSM,” 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 2006, pp. 1950-1955.

Evgen Urlep, Karel Jezernik, “Speed sensorless variable structure control of PMSM,” IECON'2006, The 32nd Annual Conference of the IEEE Industrial Electronics Society, Paris, France, Nov. 2006.

Evgen Urlep, Karel Jezernik, “Vodenje SMTM z opazovalnikom magnetnega sklepa trajnega magneta,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 431-434.


Karel Jezernik, Gregor Edelbaher, “Nov sistem mehkega zagona asinhronskih motorjev,” 27. posvetovanje Kotnikovi dnevi: izobraževalni program, Radenci, Slovenia, Mar. 2006, pp. 1/III-12/III.

Aleš Polič, Karel Jezernik, “Mechatronic systems - innovative products with embedded control,” IFAM International Trade Fair of Automation & Mechatronic, Portorož, Slovenia, Feb. 2006, pp. 71-78.


Andreja Rojko, Evgen Urlep, Janez Pogorelc, Jernej Otič: “Presentation of Institute of robotics at 39th International trade fair in Celje,” exibits, video presentation, lecture, Celje, Slovenia, June 9, 2006.

Aleš Hace, Karel Jezernik, Janez Pogorelc, Miran Rodič, Suzana Uran, Jernej Otič, Aleš Polič: “Presentation of Institute of Robotics at fair Hevreka'06,” presentation of Institute of Robotics at fair Hevreka'06, Ljubljana, Slovenia, Oct. 26, 2006.


Dejan Kos, Dr. Evgen Urlep, Asst. Prof. Dr. Miran Rodič, Asst. Prof. Dr. Aleš Hace, Prof. Dr. Karel Jezernik, Jože Korelič:

Reviewer, international workshop, The 9th International Workshop on Advanced Motion Control, Istanbul, Turkey, Mar. 27–29, 2006.

Asst. Prof. Dr. Aleš Hace: Reviewer, international workshop, 9th International Workshop on Variable Structure Systems, Alghero, Italy, June 5–7, 2006.

Dr. Gregor Edelbaher, Dr. Evgen Urlep, Asst. Prof. Dr. Miran Rodič:

Reviewer, international conference, 37th IEEE Power Electronics Specialists Conference, Jeju, Republic of Korea, June 12–18, 2006.

Asst. Prof. Dr. Aleš Hace: Organising committee member, international symposium, International Symposium on Remote Engineering and Virtual Instrumentation 2006, Maribor, Slovenia, June 29–30, 2006.


Asst. Prof. Dr. Aleš Hace: Reviewer, international symposium, International Symposium on Remote Engineering and Virtual Instrumentation 2006, Maribor, Slovenia, June 29–30, 2006.

Asst. Prof. Dr. Aleš Hace: Organising committee member, international conference, IEEE International Conference on Mechatronics, Budimpešta, Hungary, July 3–5, 2006.

Asst. Prof. Dr. Aleš Hace: Reviewer, international conference, 4th IEEE International Conference on Industrial Informatics, Singapore, Singapore, Aug. 16–18, 2006.

Asst. Prof. Dr. Martin Terbuc, Asst. Prof. Dr. Miran Rodič, Jože Harnik, Janez Pogorelc, MSc, Jože Korelič, Dr. Gregor Edelbaher:

Organising committee member, international conference, The 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 30 to Sept. 1, 2006.

Dejan Kos, Dr. Evgen Urlep, Asst. Prof. Dr. Suzana Uran, Asst. Prof. Dr. Martin Terbuc, Asst. Prof. Dr. Miran Rodič, Prof. Dr. Karel Jezernik, Asst. Prof. Dr. Aleš Hace, Dr. Gregor Edelbaher:

Reviewer, international conference, The 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 30 to Sept. 1, 2006.

Prof. Dr. Karel Jezernik: Organising committee member, international symposium, 2006 IEEE International Symposium on Industrial Electronics, Montreal, Canada, Sept. 7–13, 2006.

Dr. Evgen Urlep, Dejan Kos, Dr. Gregor Edelbaher:

Reviewer, international symposium, 2006 IEEE International Symposium on Industrial Electronics, Montreal, Canada, Sept. 7–13, 2006.

Asst. Prof. Dr. Aleš Hace: Reviewer, conference, IEEE Conference on Control Applications, Munich, Germany, Oct. 4–6, 2006.


Asst. Prof. Dr. Aleš Hace, Prof. Dr. Karel Jezernik:

Reviewer, international conference, The 32nd Annual Conference of the IEEE Industrial Electronics Society, Paris, France, Nov. 5–8, 2006.

Prof. Dr. Karel Jezernik: Reviewer for Journal of Robotic Systems.

Prof. Dr. Karel Jezernik: Reviewer for IEEE Transactions on Industrial Electronics.

Prof. Dr. Karel Jezernik: Reviewer for IEEE-ASME Transactions on Mechatronics.

Prof. Dr. Riko Šafarič: Reviewer for Proceedings of the IEEE.

Prof. Dr. Riko Šafarič: Reviewer for Journal of Systems and Control Engineering - Part I.

Prof. Dr. Karel Jezernik: Reviewer for International Journal of Control.

Prof. Dr. Karel Jezernik: Reviewer for IEE Proceedings - Electric Power Applications.

Prof. Dr. Karel Jezernik: Reviewer for Automatica - A Journal of IFAC.

Asst. Prof. Dr. Suzana Uran: Reviewer for Transactions of the Institute of Measurement and Control.

Asst. Prof. Dr. Miran Rodič: Reviewer for IEEE Transactions on Industrial Electronics.

Prof. Dr. Karel Jezernik: Reviewer for IEE Electronics Letters.

Asst. Prof. Dr. Miran Rodič: Reviewer for IEE Proceedings - Electric Power Applications.

Asst. Prof. Dr. Miran Rodič: Reviewer for European Power Electronics and Drives Journal.

Asst. Prof. Dr. Aleš Hace: Reviewer for IEEE-ASME Transactions on Mechatronics.


Asst. Prof. Dr. Aleš Hace: Reviewer for IEEE Transactions on Industrial Electronics.

Prof. Dr. Karel Jezernik: Reviewer for Journal of Intelligent and Robotic Systems.

Dejan Kos: Reviewer for IEEE Transactions on Industrial Electronics.

Dr. Aleš Polič, Asst. Prof. Dr. Miran Rodič:

Reviewer for IEEE-ASME Transactions on Mechatronics.

Dr. Evgen Urlep: Reviewer for Automatica - A Journal of IFAC.

GUESTS AND VISITORS

Mehmet Dal (Kocaely University, Izmit, Turkey):

Research cooperation, scientific collaboration, June 20 to Sept. 20, 2006.

Gyula Mester (University of Szeged, Szeged, Hungary):

Collaborative research study on the use of Matlab/Simulink program in robotics education. Work with our product DSP2-card, research work, Jan. 18–21, 2006.

Vadim Utkin (The Ohio State University, Columbus, United States):

Invited lecture: "Sliding mode control: design principles and applications for electric motors", research work, Jan. 27 to Feb. 1, 2006.

Joaquim Ros (Universitat Politecnica de Catalunya, Barcelona, Spain):

Socrates/Erasmus teaching staff mobility program. Lecture "Programmable logic control on distance learning", scientific collaboration, Apr. 23–26, 2006.

Atsuo Kawamura (Yokohama National University, Yokohama, Japan):

Working visit, representation of our research results, formal call, Sept. 3–5, 2006.

Kinematics and Simulations Laboratory RO - 31

KINEMATICS AND SIMULATIONS LABORATORY

Head:

Assoc. Prof. Dr. Peter Cafuta

Phone: +386 2 220 73 40


PUBLICATIONS

Boris Curk, “Robotiziran Powerball,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 167-170.


Marijan Španer, “Pravokotni ravninski mehanizmi kot učila,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 373-376.


Marijan Španer: “Presentation of Institute of robotics at 39th International trade fair in Celje,” exibits, video presentation, lecture, Celje, Slovenia, June 9, 2006.


Asst. Prof. Dr. Boris Curk: Reviewer, international conference, The 12th International Power Electronics and Motion Control Conference, Portorož, Slovenia, Aug. 30 to Sept. 1, 2006.

RO - 32 Kinematics and Simulations Laboratory


Assoc. Prof. Dr. Peter Cafuta: Bologna process - mechatronics, formal call, Linz, Austria, Mar. 10, 2006.

Assoc. Prof. Dr. Peter Cafuta: Visiting research laboratories, research work, Istanbul, Turkey, Mar. 29, 2006.

Assoc. Prof. Dr. Peter Cafuta: Formal visit, formal call, Čačak, Yugoslavia, Nov. 21, 2006.

Institute of Mathematics and Physics MP - 1

INSTITUTE OF MATHEMATICS AND PHYSICS

Head:

Prof. Dr. Vitodrag Kumperščak

Phone: +386 2 220 73 90


URL: http://www.mp.feri.uni-mb.si

Members of the Institute of Mathematics and Physics are participating in research activities at the Faculty for Electrical Engineering and Computer Sciences and at the Institute for Mathematics, Physics, and Mechanics in Ljubljana. Because our research work is not unilaterally organised, we are reporting on individual contributions.

MP - 2 Institute of Mathematics and Physics

Members of the Institute of Mathematics and Physics are organised into one laboratory.

Applied Mathematics Laboratory

Head: Prof. Dr. Vitodrag Kumperščak

Employees: Assoc. Prof. Dr. Gorazd Lešnjak; Assoc. Prof. Dr. Boštjan Brešar; Vladimir Grubelnik, MSc; Milan Kutnjak, MSc; Dr. Marjan Logar; Assoc. Prof. Dr Tatjana Petek; Assist. Prof. Dr. Iztok Peterin; Jasna Strnad, BSc; Aleksandra Tepeh Horvat, MSc.

Applied Mathematics Laboratory

Head:


Institute of Mathematics and Physics

Head:


Applied Mathematics Laboratory MP - 3

APPLIED MATHEMATICS LABORATORY

Head:


Phone: +386 2 220 73 90


PUBLICATIONS

Boštjan Brešar, Michael A. Henning, Sandi Klavžar, “On integer domination in graphs and Vizing-like problems,” Taiwan. j. math., Vol. 10, No. 5, pp.1317-1328, 2006.

Boštjan Brešar, Sandi Klavžar, “[Theta]-graceful labelings of partial cubes,” Discrete math., Vol. 306, Iss. 13, pp. 1264-1271, 2006.

Boštjan Brešar, Sandi Klavžar, Riste Škrekovski, “Roots of cube polynomials of median graphs,” J. graph theory, Vol. 52, No. 1, pp. 37-50, 2006.

Vladimir Grubelnik, Marko Marhl, “La formazione di gocce nei liquidi in caduta libera,” Fis. sc., Vol. 34, No. 3, pp. 114-120, Jul./sep. 2006.

Gorazd Lešnjak, Nung-Sing Sze, “On injective Jordan semi-triple maps of matrix algebras,” Linear algebra appl., Vol. 414, Iss. 1, pp. 383-388, 2006.

Iztok Peterin, “A charaterization of planar median graphs,” Discuss. Math., Graph Theory, Vol. 26, No. 1, pp. 41-48, 2006.

Vladimir Grubelnik, Marko Marhl, “Kako delujejo barvni monitorji?,” Fiz. šoli, Vol. 12, No. 1, pp. 10-17, Nov. 2006.

Marjan Stegne, Jože Pihler, Vitodrag Kumperščak, “Prispevek delnih praznitev k preboju trdega dielektrika,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. A, pp. 399-402.

MP - 4 Applied Mathematics Laboratory


Boštjan Brešar: “On broadcast domination in graphs,” lecture, Cracow, Poland, Sept. 13, 2006.

Boštjan Brešar: “Domination invariants in products of graphs,” lecture, Clemson, United States, Oct. 27, 2006.


Assoc. Prof. Dr. Boštjan Brešar: Reviewer for Discussiones Math. Graph Theory, referee of scietific articles.

Asst. Prof. Dr. Iztok Peterin: Reviewer for Discussiones Math. Graph Theory.

Assoc. Prof. Dr. Boštjan Brešar: Reviewer for Discrete Mathematics, referee of scientific articles.

Assoc. Prof. Dr. Boštjan Brešar: Reviewer for Mathematical Reviews.

Assoc. Prof. Dr. Boštjan Brešar: Reviewer for Graphs and Combinatorics.

Assoc. Prof. Dr. Gorazd Lešnjak: Reviewer for Linear Algebra and Applications.

Assoc. Prof. Dr. Tatjana Petek: Reviewer for Linear Algebra and Applications, referee of scientific articles.


Assoc. Prof. Dr. Gorazd Lešnjak: Research on bilateral project SLO - P R China "Preservers", scientific collaboration, Linfen, People Republic of China, June 18–26, 2006.

Asst. Prof. Dr. Iztok Peterin: Research on bilateral project SLO - Poland, scientific collaboration, Zielona Gora, Poland, June 19–24, 2006.

Assoc. Prof. Dr. Gorazd Lešnjak, Assoc. Prof. Dr. Tatjana Petek:

Research on bilateral project SLO - USA "Nonlinear preservers", scientific collaboration, Williamsburg, United States, Sept. 20–30, 2006.

Applied Mathematics Laboratory MP - 5

Asst. Prof. Dr. Boštjan Brešar: Research work on bilateral project SLO - USA "Cartesian product graphs and graph invariants", scientific collaboration, Greenville, United States, Oct. 20–30, 2006.

GUESTS AND VISITORS

Douglas F. Rall (Furman University, Greenville, United States):

Research work on bilateral project SLO - USA, scientific collaboration, Aug. 19–28, 2006.

Leiba Rodman (College of William and Mary, Williamsburg, United States):

Research work on bilateral project SLO - USA, scientific collaboration, Dec. 9–10, 2006.

Institute of Computer Science CS - 1

INSTITUTE OF COMPUTER SCIENCE

Head:

Prof. Dr. Viljem Žumer

Phone: ++386 2 220 74 50


URL: http://www.cs.feri.uni-mb.si/rac/

The Institute of Computer Science has 53 employees, including 5 full professors, 4 associate professors, 5 assistant professors, assistants, researchers, and technical staff. The main activities of the Institute of Computer Science are teaching graduate and postgraduate courses and research work. Research work currently being performed includes the national programme group Computer Systems, Methodologies and Intelligent Services projects financed by the Ministry of Higher Education, Science and Technology, 3 development research projects, 15 international projects, 6 applied research projects and 1 industrial project.

During the past year, the institute has published more than 100 papers, presented a great deal of research work, and in addition, organised meetings, conferences, and visits to other institutions. The main research areas of the institute are: computer graphics, artificial intelligence, computer animation, multimedia, programming languages, computer architecture, internet computing, medical informatics, software engineering, signal and image processing, and system software.

CS - 2 Institute of Computer Science

Members of the institute are divided into seven laboratories and seven centres of technology.

Institute of Computer Science


Programming Methodologies Laboratory

Head: Assoc. Prof. Dr. Marjan Mernik

Computer Graphics and Artificial Intelligence

Laboratory Head:

Prof. Dr. Nikola Guid

Computer Architecture and Languages

Laboratory Head:


System Design Laboratory

Head: Prof. Dr. Peter Kokol

System Software Laboratory

Head: Prof. Dr. Damjan Zazula

Heterogeneous Computer Systems Laboratory

Head: Assoc. Prof. Dr. Milan Ojsteršek

Geometric Modelling and Multimedia Algorithms

Laboratory Head:

Prof. Dr. Borut Žalik

Institute of Computer Science CS - 3

Computer Graphics and Artificial Intelligence Laboratory

Head: Prof. Dr. Nikola Guid

Employees: Asst. Prof. Dr. Simon Kolmanič; Dr. Damjan Strnad; Andrej Nerat

Centre for Computer Animation and Multimedia

Head: Prof. Dr. Niko Guid

Computer Architecture and Languages Laboratory


Employees: Assoc. Prof. Dr. Janez Brest; Sašo Greiner, MSc; Borko Bošković; Simon Tutek; Aleš Zamuda

Centre for Programming Languages


System Design Laboratory


Employees: Assoc. Prof. Dr. Milan Zorman; Dr. Petra Povalej; Gregor Štiglic; Matej Mertik; Mateja Verlič

Centre for Medical Informatics


System Software Laboratory


Employees: Asst. Prof. Dr. Božidar Potočnik; Dr. Danilo Korže; Dr. Andrej Šoštarič; Dr. Dean Korošec; Dr. Mitja Lenič; Dr. Aleš Holobar; Boris Cigale, MSc; Dr. Matjaž Divjak; Smiljan Šinjur; Dušan Heric; Jurij Munda; Daniel Bernard; Rok Istenič

Centre for Interactive Network Applications


CS - 4 Institute of Computer Science

Centre for Biomedical Signal and Image Processing


Heterogeneous Computer Systems Laboratory


Employees: Ervin Schaffranietz, MSc; Branko Horvat, MSc; Borut Gorenjak, MSc; Albin Bregant; Janez Brezovnik

Centre for Heterogeneous Processing


Laboratory for Geometric Modelling and Multimedia Algorithms

Head: Prof. Dr. Borut Žalik

Employees: Asst. Prof. Dr. David Podgorelec; Asst. Prof. Dr. Matej Gomboši; Asst. Prof. Dr. Sebastian Krivograd; Dr. Gregor Klanjšek; Dr. Mirko Zadravec; Vid Domiter; Boštjan Pivec; Denis Špelič, Bojan Rupnik, Blaž Repnik, Denis Obrul

Centre for Geometric Modelling

Head: Prof. Dr. Borut Žalik

Programming Methodologies Laboratory

Head: Assoc. Prof. Dr. Marjan Mernik

Employees: Matej Črepinšek; Tomaž Kosar; Damijan Rebernak; Marjan Horvat

Computer Graphics and Artificial Intelligence Laboratory CS - 5

COMPUTER GRAPHICS AND ARTIFICIAL INTELLIGENCE LABORATORY

Head:

Prof. Dr. Nikola Guid

Phone: +386 2 220 74 70


PUBLICATIONS

Nikola Guid, Simon Kolmanič, Damjan Strnad, “SURFMOD: teaching tool for parametric curve and surface methods in CAGD based on comparison and analysis,” IEEE trans. ed., Vol. 49, No. 2, pp. 292-301, May 2006.

Simon Kolmanič, Nikola Guid, “FlattGen: Teaching tool for surface flattening,” Comput. appl. eng. educ., Vol. 14, No. 2, pp. 106-119, 2006.

Simon Kolmanič, Nikola Guid, “Reconstructing 3D curves with euclidean minimal spanning trees,” Electrotechnical Review, Vol. 73, No. 2-3, pp. 84-92, 2006.

Andrej Nerat, Nikola Guid, “Ogrodje spletne storitve za modeliranje in vizualizacijo dreves,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 67-70.

Aleš Zamuda, Janez Brest, Nikola Guid, Viljem Žumer, “Construction of virtual trees within ecosystems with ecomod tool,” Proceedings of the VIPSI-2006 Slovenia: Multidisciplinary, Interdisciplinary, Transdisciplinary: M+I+T++, Bled, Slovenia, Dec. 2006.

Aleš Zamuda, Nikola Guid, “Modeliranje, simulacija in upodabljanje gozdov,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 391-392.


Prof. Dr. Nikola Guid: Member of international programme board,

CS - 6 Computer Graphics and Artificial Intelligence Laboratory

international conference, 29th International Convention MIPRO, Opatija, Croatia, May 22–26, 2006.

Prof. Dr. Nikola Guid: Programme committee member, international conference, Information society 2006, Ljubljana, Slovenia, Oct. 9–14, 2006.


Prof. Dr. Nikola Guid, Dr. Simon Kolmanič, Dr. Damjan Strnad:

During our visit introduction talking with potential partners have been held, where the research field of both sides have been presented and the potential common interests have been investigated, formal call, Ljubljana, Slovenia, June 19, 2006.

Prof. Dr. Nikola Guid, Dr. Simon Kolmanič Andrej Nerat, Dr. Damjan Strnad:

Preparation of common project declaration, formal call, Ljubljana, Slovenia, June 23, 2006.

Prof. Dr. Nikola Guid, Dr. Simon Kolmanič Andrej Nerat, Dr. Damjan Strnad:

During our visit introduction talking with potential partners have been held, where the research field of both sides have been presented and the potential common interests have been investigated, formal call, Ig, Slovenia, June 23, 2006.

Prof. Dr. Nikola Guid, Dr. Simon Kolmanič:

Preparation of common project declaration, formal call, Ljubljana, Slovenia, June 26, 2006.

Prof. Dr. Nikola Guid, Dr. Simon Kolmanič, Dr. Damjan Strnad:

During our visit introduction talking with potential partners have been held, where the research field of both sides have been presented and the potential common interests have been investigated, formal call, Ljubljana, Slovenia, Nov. 24, 2006.

Computer Architecture and Languages Laboratory CS - 7

COMPUTER ARCHITECTURE AND LANGUAGES LABORATORY

Head:


Phone: +386 2 220 74 50


RESEARCH PROJECTS


Industrial projects

ELL Programska oprema za elektronsko vodenje likvidacijskih listov (Electronic support for digital signings of documents)

Leader: Assoc. Prof. Dr. Marjan Mernik (Faculty of Electrical Engineering and Computer Science)

Participants: Matej Črepinšek, Tomaž Kosar

The project goal is to develop a software for company expenses. The project was carried out in Lotus Notes platform and includes document input, interactive monitoring and support for the payment process. The main features are the centralized control of documents, and electronic notification of people involved in the signing process.

CS - 8 Computer Architecture and Languages Laboratory



BI-US/05-06/009 Grammar Interface Technology and Applications in Software Engineering

Leader: Assoc. Prof. Dr. Marjan Mernik (Faculty of Electrical Engineering and Computer Science), Barrett Bryant (University of Alabama at Birmingham)

Participants: Faizan Javed, Matej Črepinšek, Tomaž Kosar, Alan Sprague, Damijan Rebernak, Jeff Gray

Project partners: University of Alabama at Birmingham



Grammatical inference (grammar induction or language learning) is a process of learning a grammar from positive and/or negative sentences. Machine learning of grammars finds many applications in syntactic pattern recognition, computational biology, natural language acquisition, software engineering, etc. In the previous project "BI-US/03-04/5 GenParse: Generating a parser from examples" we were successful in inferring context-free grammars for small domain-specific languages. The results were promising and more investigations need to be done. In the proposed project we would like to have explored ideas further to be also applicable for inferring real world grammars. Furthermore, we would like to have explored the usability of grammatical inference in other applications also, such as metamodel recovery.

BI-PT/04-06-008 Grammar-based Systems

Leader: Assoc. Prof. Dr. Marjan Mernik (Faculty of Electrical Engineering and Computer Science), Pedro Henriques (University of Minho)

Participants: Matej Črepinšek, Maria Joao Pereira Varanda, Tomaž Kosar, Damijan Rebernak

Project partners: University of Minho



The project was a continuation of our previously successful project entitled "Automatic generation of Language-based tools" where we showed that from formal language definition


(attribute grammars) not just complete compiler/interpreter can be automatically generated but also many other language-based tools, such as: syntax-directed editors, type checkers, visualizers, animators, etc. In this project the importance of grammars (e.g. context-free grammars, attribute grammars) in various research fields (e.g. software engineering, information theory, evolutionary computations) was further explored. Their benefits were investigated and compared to ordinary systems. We have already started working on one such grammar-based system - GAPS: Grammatical Approach to Problem Solving.

PUBLICATIONS

Borko Bošković, Janez Brest, Viljem Žumer, “Objektno orientirano načrtovanje in implementacija računalniškega šaha,” Electrotechnical Review, Vol. 73, No. 1, pp. 31-37, 2006.

Janez Brest, Sašo Greiner, Borko Bošković, Marjan Mernik, Viljem Žumer, “Self-adapting control parameters in differential evolution: a comparative study on numerical benchmark problems,” IEEE trans. evol. comput., Vol. 10, No. 6, pp. 646-657, Dec. 2006.

Ivan Pešl, Viljem Žumer, Janez Brest, “Optimizacija s pomočjo kolonije mravelj,” Electrotechnical Review, Vol. 73, No. 2-3, pp. 93-98, 2006.

Mirjam Sepesy Maučec, Janez Brest, Zdravko Kačič, “Statistical alignment models in machine translation from Slovenian to English,” Electrotechnical Review, Vol. 73, No. 5, pp. 273-278, 2006.

Borko Bošković, Sašo Greiner, Janez Brest, Viljem Žumer, “Adaptivni algoritem diferencialne evolucije za uglaševanje parametrov ocenitve funkcije računalniškega šaha,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 83-86.

Borko Bošković, Sašo Greiner, Janez Brest, Viljem Žumer, “A differential evolution for the tuning of a chess evaluation function,” 2006 International Conference on Neural Networks, 2006 IEEE International Conference on Fuzzy Systems, 2006 IEEE Congress on Evolutionary Computation, 2006 IEEE World Congress on Computational Intelligence, Vancouver, Canada, Jul. 2006, pp. 6742-6747.

Janez Brest, Mirjam Sepesy Maučec, Borko Bošković, Sašo Greiner, Viljem Žumer, “Optimizacija z omejitvami: eksperimentalni rezultati s samo-prilagodljivim algoritmom diferencialne evolucije,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 91-94.

CS - 10 Computer Architecture and Languages Laboratory

Janez Brest, Viljem Žumer, Mirjam Sepesy Maučec, “Control parameters in self-adaptive differential evolution,” Bioinspired optimization methods and their applications: proceedings of the Second International Conference on Bioinspired Optimization Methods and their Applications - BIOMA 2006, Ljubljana, Slovenia, Oct. 2006, pp. 35-44.

Janez Brest, Viljem Žumer, Mirjam Sepesy Maučec, “Self-adaptive differential evolution algorithm in constrained real-parameter optimization,” 2006 International Conference on Neural Networks, 2006 IEEE International Conference on Fuzzy Systems, 2006 IEEE Congress on Evolutionary Computation, Vancouver, Canada, Jul. 2006, pp. 919-926.

Sašo Greiner, Janez Brest, Viljem Žumer, “Advantages of dynamic method-oriented mechanism in a statically typed object-oriented programming language Z0,” ITI 2006: proceedings of the 28th International Conference on Information Technology Interfaces, Cavtat/Dubrovnik, Croatia, Jun. 2006, pp. 433-438.

Mirjam Sepesy Maučec, Janez Brest, Zdravko Kačič, “Slovenian to english machine translation using corpora of different sizes and morpho-syntactic information,” Jezikovne tehnologije: zbornik 9. mednarodne multikonference Informacijska družba IS 2006, Ljubljana, Slovenia, Oct. 2006, pp. 222-225.

Aleš Zamuda, Janez Brest, Nikola Guid, Viljem Žumer, “Construction of virtual trees within ecosystems with ecomod tool,” Proceedings of the VIPSI-2006 Slovenia: Multidisciplinary, Interdisciplinary, Transdisciplinary: M+I+T++, Bled, Slovenia, Dec. 2006.

Aleš Zamuda, Nikola Guid, “Modeliranje, simulacija in upodabljanje gozdov,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 391-392.


Borko Boškovič: “Presentation of BBChess chess program at Researches in Europe,” participation with BBChess program and poster, Maribor, Slovenia, Sept. 22, 2006.

Borko Boškovič: “Presentation of BBChess chess program at fair Hevreka'06,” participation with BBChess program, poster, and Institute of Computer Science handbills, Ljubljana, Slovenia, Oct. 24, 2006.

Borko Boškovič: “Presentation of BBChess chess program at Institutes and laboratories fair,” participation with BBChess program, poster, and Computer Architecture and Languages Laboratory handbills, Maribor, Slovenia, Nov. 29, 2006.



Asst. Prof. Dr. Janez Brest: Reviewer for IEEE Transactions on Very Large Scale Integration (VLSI) Systems.

Asst. Prof. Dr. Janez Brest: Reviewer for Journal Of Parallel Distributed Computing.

Asst. Prof. Dr. Janez Brest: Reviewer for IEEE Transactions on Evolutionary Computation.

DECORATIONS, AWARDS, AND HONOURS

Aleš Zamuda: award for the best paper in students paper competition ERK 2006, Portorož, Slovenia, Sept. 26, 2006.

Aleš Zamuda: FERI award for research achievements, Maribor, Slovenia, Dec. 14, 2006.

CS - 12 System Design Laboratory

SYSTEM DESIGN LABORATORY

Head:

Prof. Dr. Peter Kokol

Phone: +386 2 220 74 57


RESEARCH PROJECTS



METOD 2004-176004

METOD - MetaTool for Educational platform Design

Leader: Prof. Dr. Peter Kokol (Faculty of Electrical Engineering and Computer Science)

Participants: Gregor Štiglic, Matej Mertik, Asst. Prof. Dr. Petra Povalej, Asst. Prof. Dr. Milan Zorman, Mateja Verlič

Project partners: Western Greece Development Center, Faculty of Electrical Engineering and Computer Science, TelabGesbR, Czech Technical University Prague, Intelligent Computer Systems Centre, Department Educational Sciences and Media Research, ZEUS Consulting S.A.-LogicDIS Group, IDEC S.A., Gjovik College – Higher Education Institution, The Centre for interdisciplinary and multidisciplinary research and studies, II. high school Maribor, School of textiles Maribor, Secondary school of health-care

Rapid advancement in ICT, including multimedia, virtual reality, intelligent systems and telecommunications (i.e. Internet) has enabled the development of computer-supported educational platforms (CSET), which can improve the quality, user friendliness and accessibility of training, education and lifelong learning. The major advantage of such a type of learning is the immediate feedback to the learner. There is no waiting period for correction and, therefore, learners do not “practice their mistakes”. The various channels, through which educational information is brought to the student largely improve the efficiency by employing both brain hemispheres. In addition computer-supported platforms are the basis for

System Design Laboratory CS - 13

supporting or even developing new innovative types of learning (innovative pedagogy), i.e. problem based learning, evidence based learning, etc. But literature overview, recent research supported by consortium own experiences gained in various projects and the results of some pre-studies noted various disadvantages of current CSETs, the most important being:

• that after the novelty effect of drill and practice wears off the motivational power is lost,

• the platforms are static - the educators or trainees can not adapt them to specific environments (for example disabled people), changed educational requirements, new educational programmes, etc.,

• normally, the educators or trainees can not develop such platforms by themselves, because of the lack of knowledge, the lack of time, non existence of the platform development paradigm, etc.

The specific aims of the projects are:

• To design a general computer-supported educational platform development paradigm.

• To develop a framework for integrating machine learning and machine intelligence in the educational platforms, enabling self adaptation according to special educator's and trainee's needs and characteristics.

• To design a metatool enabling all kinds of educators (including parents or senior family members) to develop, adapt and maintain their own educational platforms without great effort.

• To provide courses, conferences and workshops for target groups on the above three topics.

• To disseminate the project's achievements to a wider audience using both ICT and conventional approaches.

The long term aims are to improve the skills and competence of people by the integration of new computer-supported educational platforms, specially designed for specific environments and requirements into the training and educational process. The paradigm and metatool will enable the building of educational and training environments, supporting and developing innovative pedagogical approaches and curricula, accelerate e-Learning and lifelong learning, encourage the development of teaching and learning materials, and build virtual learning environments. As a result the quality, user friendliness and accessibility of training and educational processes will be significantly improved.

Concurrently ICT enabling these educational platforms to be made accessible to a variety of different target groups (trainees, employed and unemployed workers, people with disabilities, etc) with the additional advantages of asynchronous learning, distant learning and lifelong acquisition of skills and competencies.


Citing the above two program objectives will be supported »to improve the skills and competencies of people, …« and »to improve the quality of, and access to, continuing vocational training …« together with the call priority “New technologies”. Wider EU initiatives like lifelong learning, innovative pedagogy, e – Learning supporting the basic objectives of learning (such as active citizenship, personal fulfilment, social inclusion and employability/adaptability) will also be taken into account. They will be addressed using all accessible new information technologies such as: Internet, wireless communication, ultra high performance computers, virtual reality, intelligent systems, agent technology and all the related knowledge. The environment and the platforms will be accessible to all citizens through the internet and both will be user friendly, flexible and adaptable for all levels of education, for all ICT skill levels, and also for people with disabilities.

BI-ES/04-05-2003 Cellular automata for classification

Leader: Asst. Prof. Dr. Milan Zorman (Faculty of Electrical Engineering and Computer Science), Jose Luis Sanches de la Rosa (University of La Laguna, Tenerife)

Participants: Gregor Štiglic, Matej Mertik, Mateja Verlič, Asst. Prof. Dr. Petra Povalej, Dr. Mitja Lenič, Asst. Prof. Dr. Milan Zorman

Project partners: Faculty of Electrical Engineering and Computer Science, University of La Laguna, Tenerife

Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia, Ministry of External Affairs of Spain

The use of intelligent systems and machine learning methods is becoming more and more popular in fields like medicine, chemistry and biology. In these fields we are not only faced with technical problems, but also with a lack of confidence towards machine learning techniques due to lack of knowledge. In some cases those methods, which are capable of presenting deduction processes are not powerful enough and vice versa. To solve this problem we started to develop hybrid methods a few years ago. Hybrids were aimed at combining those advantages of the joined methods which contributed to the quality of acquired knowledge. One of the main goals of each method for intelligent system construction is the induction of a classifier with high classification accuracy. Since that is a very demanding task that cannot always be reached using existing methods, our novel idea is to use cellular automata (CA) for classification purposes. CA are discrete dynamical systems whose behavior is completely specified in terms of a local relationship. Space CA use is represented by a uniform grid, with each cell containing a few bits of data; time advances in discrete steps and the laws of the "universe" are expressed in, say, a small look-up table, through which at each step each cell computes its new state from that of its close neighbours. Thus, the system's laws are local and uniform. One of the main advantages of the CA used for classification, compared to other single and ensemble methods, is the social aspect - groups of different methods which defend a common decision are formed and they contribute


altogether to the final classification, which is not made sequentially as in the case of ensemble methods. Within the framework of the project, a CA will be presented as a powerful hybrid that can geometrically combine different methods for intelligent system construction into one classifier. We will implement the classical methods of machine learning, already existing hybrid methods of machine learning and we will also develop and test completely new hybrid methods. Since the explanation power of CA depends on the explanation power of methods included in a hybrid, the induction of classifier CA can also be influenced by improving their explanation power in such a way that the domain experts are able to easily follow the decision making process. The quality of this novel approach will be tested on several public and real-world databases and also compared to other methods, on the basis of classification accuracy and the quality of extracted knowledge evaluated by domain experts.

We can pose our problem of supervised classifier design in terms of the input and output of a top level task. This trained classifier consists of a complete procedure for predicting the class or label of a new unlabelled subject that will fail, on average, with the probability supplied, assuming that the subject is extracted from the same population as the sample used in the design. It is assumed that the design procedure cannot exert control over the composition of the training sample that is given externally. The main specification of the classifier is its performance, as measured by the mean probability of error. The design of a classifier can be considered as a complex search in a large space of objects that satisfy multiple constraints. One of the criteria for subdividing the design problem is the functional decomposition, which partitions the problem in building several components based on their functions. In the classifier process, several components executing particular functions can be identified. Firstly, a selection or pruning of the set of original features can be considered. Secondly, a transformation on the pruned data can take place to adapt or condition the data. Third, the chosen classifier has to predict the final class of the subject from the data. Each of these stages must be designed as part of the global classifier. There are deep couplings between the stages, and they have to be tuned adequately using domain knowledge. A knowledge based system (KBS) is proposed to automate the design process of a classifier following the guidelines suggested above. The structure of the domain knowledge allow us to reduce the complexity of the problem by constraining the space of possible designs. Through the use of heuristics that favour robustness over complexity, it is expected to attain reliably performing classifiers. The KBS structure is made explicit to favour the explanation of the classifier construction's decisions.

Both approaches (CA and KBS) are focused on different search strategies with the common aim of making classifiers cooperate. As an example, the initial methods to the first approach could be provided by the output of the KBS. In the project we will try to achieve the next objectives: (1) to develop a novel approach for machine learning with the use of CA and KBS; (2) to achieve results with higher classification accuracy and explanation power, compared with already existing methods; (3) to acquire and evaluate new knowledge from different domains with the help of a new approach; (4) to prove that by using different machine learning methods in one CA, it is possible to achieve better classification accuracy, as with


the use of ensemble methods.

BI-CZ/05-06/011 Multi-Agent Systems for Decision Support in Medicine II

Leader: Prof. Dr. Peter Kokol (Faculty of Electrical Engineering and Computer Science), Lenka Lhotska (Czech Technical University of Prague)

Participants: Matej Mertik, Mateja Verlič, Gregor Štiglic, Asst. Prof. Dr. Petra Povalej, Asst. Prof. Dr. Milan Zorman

Project partners: Czech Technical University in Prague, Faculty of Electrical Engineering


The project is focused on the utilization of a multiagent system as a platform for the development of decision support in the medical domain. A knowledge-based model of the agents’ mutual awareness (social knowledge) is presented. A tri-base acquaintance (3bA) model is used for formalization of agent’s social behaviour knowledge and agent’s cooperation neighbourhood knowledge. The project focuses particularly on analyzing the content of 3bA knowledge bases for applications in medical decision support.

The applicability of agent architecture developed in the Gerstner Laboratory has been proven by applications in several areas, e.g. in the field of production planning and scheduling (system ProPlanT), supply chain management (project ExPlanTech), coalition formation (system CPlanT). The intended application we focus on is decision support in medical diagnostics.





Financed by: Slovenian Research Agency – project PROTEUS

The objective of the project is to contribute to the integration of developed data mining techniques into information and telecommunication systems. It will broaden the understanding of data mining and its implications to various fields, such as data security and quality . The aim is to promote the sharing and dissemination of information and state-of-the-


art on current data mining and knowledge discovery methods, and to use new processing and storage paradigm to support the data and processing intensive process. The goal is to incorporate the research results into the daily usage.

In the field of automatic multimedia content analysis the main research work will be focused on automatic segmentation of audio signal, analysis of langiuage dependencies of applied methods and evaluation of their accuracy.

For indexing the audio files we will also use the text mining techniques based on the Porters filtering method and machine learning algorithms appropriate for the text mining, such as support vector machines, Bayesian methods and neural networks. All these are incorporated in the Multimetod environment developed at FERI.



V2-0131 MAGSIS MAGSIS - Multi-agentni sistemi v Sloveniji (MAGSIS - Multi-agent systems to Slovenia)

Leader: Prof. Dr. Peter Kokol (Faculty of Electrical Engineering and Computer Science)

Participants: Mateja Verlič, Gregor Štiglic, Asst. Prof. Dr. Petra Povalej

Financed by: Ministry of the Information Society, Ministry of Education, Science and Sport of the Republic of Slovenia

Duration: Oct. 2004 to Sep. 2006

The MAGSIS project was focused on agent technologies research and agent-based applications in slovenian information society. The use of agent systems in Slovenia will enable higher productivity in information society and competitiveness of Slovenia in the electronic services and information IT markets.

PUBLICATIONS

Peter Kokol, Marko Kokol, Petra Kokol, “The information density of literary works through history,” Cybern. syst., Vol. 37, No. 4, pp. 361-371, Jun. 2006.

Peter Kokol, Mitja Lenič, “Analyzing software with the complexity theory,” WSEAS Trans. Syst., Vol. 5, Iss. 10, pp. 2484-2488, Oct. 2006.


Peter Kokol, Mateja Verlič, Miljenko Križmarić, “Modelling teens clothing fashion preferences using machine learning,” WSEAS transactions on information science and applications, Vol. 3, Iss. 10, pp. 2054-2065, Oct. 2006.

Helena Blažun, Peter Kokol, Dušanka Mičetić-Turk, Zmago Turk, Ana Habjanič, Tatjana Ribič, “Information and communication technology - challenge for elderly people,” Developing research in nursing, social care education and multisectoral cooperation, Maribor, Slovenia, 2006, pp. 24-27.

Dejan Dinevski, Andrej Brodnik, Peter Kokol, Janja Jakončič-Faganel, “Kriteriji za kakovost elektronskih učnih gradiv,” Management sprememb: zbornik 25. mednarodne konference o razvoju organizacijskih znanosti, Portorož, Slovenia, Mar. 2006, pp. 260-267.

Ana Habjanič, Peter Kokol, Helena Blažun, “Subjective meaning of quality in elderly care,” Developing research in nursing, social care education and multisectoral cooperation, Maribor, Slovenia, 2006, pp. 44-45.

Marjan Horvat, Milan Zorman, “Izboljšava odločitvenih dreves z evolucijsko večkriterijsko optimizacijo,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 75-78.

Peter Kokol, Helena Blažun, Dušanka Mičetić-Turk, Patricia A. Abbott, “E-learning in nursing education - challenges and opportunities,” Consumer-centered computer-supported care for healthy people: proceedings of NI2006: the 9th International Congress on Nursing Informatics, Amsterdam, Netherlands, 2006, pp. 387-390.

Peter Kokol, Helena Blažun, Dušanka Mičetić-Turk, Vida Gönc, Patricia A. Abbott, “E-learning in nursing education - challenges and opportunities,” Developing research in nursing, social care education and multisectoral cooperation, Maribor, Slovenia, 2006, pp. 14-19.

Matej Mertik, Mitja Lenič, Gregor Štiglic, Peter Kokol, “Estimating software quality with advanced data mining techniques,” International conference on software engineering advances (ICSEA 2006), 2006.

Dušanka Mičetić-Turk, Peter Kokol, Zmago Turk, Helena Blažun, “Continuing professional education and work - integrated learning a necessary condition for nurses professional development,” Zbornik radova: reforma višeg i visokog školstva: higher education reform, Belgrade, Serbia, 2006, pp. 26-36.

Petra Povalej, Mateja Verlič, Peter Kokol, Jose Luis Sanchez, Jose F. Sigut, “Identifying lymphoma in microscopy images with classificational cellular automata,” Nineenth IEEE


symposium on computer-based medical systems [also] CBMS 2006, Salt Lake City, Utah, USA, Jun. 2006, pp. 309-314.

Gregor Štiglic, Peter Kokol, “Evolutionary tuning of combined multiple models,” Knowledge-based intelligent information and engineering systems: proceedings of the 10th international conference, Bournemouth, UK, Oct. 2006, Vol. 3, pp. 1297-1304.

Gregor Štiglic, Matej Mertik, Vili Podgorelec, Peter Kokol, “Using visual interpretation of small ensembles in microarray analysis,” Nineenth IEEE symposium on computer-based medical systems [also] CBMS 2006, Salt Lake City, Utah, USA, Jun. 2006, pp. 691-695.

Mateja Verlič, Peter Kokol, “Metod - metatool for education platform design,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 31-34.

Tatjana Welzer-Družovec, Peter Kokol, Ana Habjanič, Marjan Družovec, “Teaching IT in the postgraduate health care and nursing program,” Advancing health information management and health informatics: issues, strategies, and tools: proceedings of the eleventh international symposium on health information management research, Halifax, Nova Scotia, Canada, Jul. 2006, pp. 128-131.

Milan Zorman, Jose Francisco Sigut, José Luis Sánchez de la Rosa, Silvia Alayón, Peter Kokol, Mateja Verlič, “Evolutionary built decision trees for supervised segmentation of follicular lymphoma images,” Intelligent systems and control: proceedings of the Ninth IASTED International conference on Intelligent systems and control, Honolulu, Hawaii, USA, Aug. 2006, pp. 182-187.

Dušanka Mičetić-Turk, Peter Kokol, Zmago Turk, Helena Blažun, “New opportunities in nursing education,” Developing research in nursing, social care education and multisectoral cooperation, Maribor, Slovenia, 2006, pp. 9-13.

Mitja Lenič, Petra Povalej, Peter Kokol, “Impact of purity measures on knowledge extraction in decision trees,” Foundations and novel approaches in data mining, Berlin, Germany, 2006, pp. 229-242.

Petra Povalej, Matej Mertik, Peter Kokol, “Knowledge engineering,” Wiley encyclopedia of biomedical engineering, Vol. 4, 2006, pp. 2116-2122.

Gregor Štiglic, Mateja Verlič, Peter Kokol, “Software agents,” Wiley encyclopedia of biomedical engineering, Vol. 5, 2006, pp. 3277-3285.



Mateja Verlič: “Lessons learned from e-learning,” presentation of experiences from e-learning projects, Jyvaskyla, Finland, Sept. 22, 2006.


Prof. Dr. Peter Kokol: Programme committee member, conference, Biomedical Engineering 2006, Insbruck, Austria, Feb. 12–14, 2006.

Prof. Dr. Peter Kokol: Chairman, international conference, The IASTED International Conference on Sotfware Engineering, Innsbruck, Austria, Feb. 14–16, 2006.

Prof. Dr. Peter Kokol: Programme committee member, international conference, Knowledge Management in Organizations - New Trends in Knowledge Management 2006, Maribor, Slovenia, June 13–14, 2006.

Prof. Dr. Peter Kokol: Member of steering committee, international symposium, The 19th IEEE International Symposium on Computer-Based Medical Systems, Salt Lake City, United States, June 22–23, 2006.

Prof. Dr. Peter Kokol: Section chair, conference, Knowledge-based intelligent information and engineering systems : 10th international conference, Bournemouth, United Kingdom, Oct. 9–11, 2006.

Prof. Dr. Peter Kokol: Programme committee member, international conference, International Conference on E-Governance, New Delhi, India, Dec. 15–17, 2006.

Prof. Dr. Peter Kokol: Reviewer for Journal of Applied Systems Studies, editorial board.

Prof. Dr. Peter Kokol: Reviewer for IEEE Software.

Prof. Dr. Peter Kokol: Reviewer for IEEE Computer.



Gregor Štiglic: Research work on application of machine learning techniques in bioinformatics., visit, London, United Kingdom, Mar. 12–15, 2006.

Matej Mertik: Research work in the field of Cellular automata., research work, Jyväskylä, Finland, July 10 to Oct. 5, 2006.

Prof. Dr. Peter Kokol, Alojz Tapajner:

Participation at METOD project meeting., visit, 26221 Patras, Greece, Aug. 2–7, 2006.

Petra Povalej, Mateja Verlič:

Project meeting participation., visit, Avignon, France, Dec. 1–8, 2006.

GUESTS AND VISITORS

Jose Luis Sanches de la Rosa (University of La Laguna, Tenerife, La Laguna, Spain):

Bilateral project cooperation visit, scientific collaboration, Feb. 1–20, 2006.

CS - 22 System Software Laboratory

SYSTEM SOFTWARE LABORATORY

Head:

Prof. Dr. Damjan Zazula

Phone: +386 2 220 74 80


RESEARCH PROJECTS



V2-0219 Digitalna forenzika in njena vloga pri sodnih postopkih (Digital forensics and its role in judicial processes)

Leader: Dr. Danilo Korže (Faculty of Electrical Engineering and Computer Science)

Participants: Igor Belič, MSc; Mario Casar; Benjamin Lesjak, MSc; Milan Gabor; Polona Novak; Asst. Prof. Dr. Rok Lampe; Jurij Munda; Urška Kežmah, MSc; Dr. Liljana Selinšek

Project partners: Viris d.o.o., Faculty of Law, University of Maribor, Faculty of Criminal Justice and Security, University of Maribor

Financed by: Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije, Slovenian Research Agency

Interdisciplinary investigation of computer and internet forensics and law will adress the security of information systems and their forensics and so contribute to further developments in the area of slovene legislation about computer forensics, and judge the adoption and consideration of digital evidences, which were gathered during the investigation process.

The research will primary analyse the present state of the art in the area of digital evidence in solving computer crime in Slovenia. In continutation of the project, the comparative study of results, methods and best pratice in some european countries will be performed in the area of interest. Some guidelines of the European Union will be studied and the harmony of the present practice with these guidelines will be checked.

In the research, the possibilies for usage and verification of tools and procedures will be

System Software Laboratory CS - 23

exposed, which are used in collecting digital evidences and their improvements, which could contribute to enlarging the percent of successfully considered digital evidences in judicial processes.

From the judicial viewpoint, the possibilities of proposing some corrections to the present legislation will be studied, so that it could be improved to enable easier input into the force of digital evidence in the judicial process.

V2-0220 Empirična analiza stanja varovanja in uporabe osebnih podatkov s pravnega in informacijsko-komunikacijskega vidika (Empirical analysis of state of protection and use of personal data from legal and information-communication viewpoint)

Leader: Dr. Mitja Lenič (Faculty of Electrical Engineering and Computer Science)

Participants: Jurij Munda; Jurij Toplak, MSc; Tomaž Klenovšek, MSc; Dr. Tomaž Keresteš; Benjamin Lesjak, MSc; Asst. Prof. Dr. Aleš Holobar; Smiljan Šinjur; Boris Cigale, MSc; Prof. Dr. Damjan Zazula; Urška Kežmah, MSc

Project partners: Faculty of Law, University of Maribor

Financed by: Slovenian Research Agency, Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije

Research addresses increasingly urgent issues of use, protection and potential abuse of personal data in modern information society. The personal data of individuals are stored in electronic form in an increasingly simplified and accessible way with the goal of improving society's operational efficiency. That trend also significantly exposes personal data and increases the risk of its' abuse. The goal of this research is to determine the legal state of art in Slovene legislation and to execute empirical analysis and determine actual state, with the application of automated tools, on the world-wide web. The intention is to identify potential ways of abusing personal data and suggest improvements and other measures to prevent personal data abuse, thereby increasing the confidence of people in information society and use of modern technologies on which the information society is built.


DePaSSE BI-CY/06-07-001

Detection of pathological changes in surface electromyograms using statistical and entropy-based approaches (Bilateral Slovenian-Cypriot project)

Leader: Prof. Dr. Damjan Zazula (Faculty of Electrical Engineering and Computer Science)


Participants: Dr. Matjaž Divjak; Rok Istenič; Asst. Prof. Dr. Aleš Holobar; Breda Jesenšek Papež, MSc

Project partners: University of Cyprus, Nicosia

Financed by: Cyprus Research Promotion Foundaction, Slovenian Research Agency

A bilateral research project whose aim is computer-based diagnosis of surface electromyograms (SEMG) was approved for the period between October 2005 and October 2007. This project collaboration links four research groups, two from Cyprus (Department of Computer Science, University of Cyprus, and Cyprus Institute for Neurology and Genetics, both in Nicosia) and two from Slovenia (beside the System Sofware Laboratory, there is also a group from the Neurology Department in the Teaching Hospital of Maribor).

In 2006 two visits were made, namely two Slovenian researchers visited Nicosia in September, and three Cyprian researchers visited Maribor in December. Agreement was made with medical partners, as to how recordings of surface electromyograms included in research will be done. Recordings will be taken with standard 4- or 8-channel recording devices at different levels of isometric muscle contractions. The groups from the University of Cyprus and University of Maribor will analyse the recorded data, each with their own procedures, namely by statistical and entropy methods.

BI-IT/05-08-024 Extraction of Clinic-Relevant Information from Multichannel Surface Electromyograms

Leader: Prof. Dr. Damjan Zazula (Faculty of Electrical Engineering and Computer Science)

Participants: Rok Istenič, Asst. Prof. Dr. Aleš Holobar Project partners: Politecnico di Torino

Financed by: Ministery of Foregin Affairs of the Italian Republic, Slovenian Research Agency

A bilateral research project whose aim is computer decomposition of surface electromyograms (SEMG) was approved for the period between 2006 and 2008. In 2006 two visits were made, namely two Slovenian researchers visited Torino in August and September and two Italian researchers visited Slovenia in December.

During his one month stay in Italy Rok Istenič carried out comprehensive research of activity index, which is computed directly from surface recorded EMG signals and which should be an indicator of muscle force produced at definite muscle contraction. Prof. Damjan Zazula gave three lectures for the postgraduate students at Politecnico di Torino during his visit.

During the visit of prof. Roberto Merletti and dr. Marco Minetto in Slovenia we organized a workshop on diagnosis with needle and decomposed surface EMG which took part at the


Clinical Center in Ljubljana.

PUBLICATIONS

Jorge Cardoso, Mitja Lenič, “Web process and workflow path mining using the multimethod approach,” Int. j. bus. intell. data min. (Print), Vol. 1, No. 3, pp. 304-328, 2006.

Dušan Heric, Božidar Potočnik, “Image enhancement by using directional wavelet transform,” CIT. J. Comput. Inf. Technol., Vol. 14, No. 4, pp. 299-305, 2006.

Dušan Heric, Božidar Potočnik, “Podporni informacijski sistemi za simulacijo kinematike lokomotornih sistemov,” Uporab. inform. (Ljubl.), Vol. 14, No. 3, pp. 142-146, Jul., Aug., Sep. 2006.

Dušan Heric, Damjan Zazula, “Combined edge detection using wavelet transform and signal registration,” Image vis. comput., available online 7 July 2006.

Aleš Holobar, Milan Ojsteršek, Damjan Zazula, “Distributed Jacobi joint diagonalization on clusters of personal computers,” Int. j. parallel program., Vol. 34, No. 6, pp. 509-530, 2006.

Aleš Holobar, Damjan Zazula, “Time-frequency based decomposition of multichannel surface electromyograms,” WSEAS Trans. Biol. Biomed., Vol. 3, Iss. 5, pp. 376-382, 2006.

Peter Kokol, Mitja Lenič, “Analyzing software with the complexity theory,” WSEAS Trans. Syst., Vol. 5, Iss. 10, pp. 2484-2488, Oct. 2006.

Smiljan Šinjur, Damjan Zazula, “A novel approach to image matching using convex layers,” WSEAS transactions on information science and applications, Vol. 3, Iss. 12, pp. 2381-2385, Dec. 2006.

Konrad Steblovnik, Damjan Zazula, “Designing agent-based household appliances,” Intelligent production machines and systems: 2nd I*PROMS Virtual Conference, Amsterdam, Netherland, Jul. 2006, pp.171-178.

Boris Cigale, Mitja Lenič, Dušan Heric, Damjan Zazula, “Prototip inteligentnega pralnega stroja s spektralno separacijo (PIPSss) - projektno vodena predavanja in vaje na smeri logika in sistemi,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 329-332.

Boris Cigale, Mitja Lenič, Damjan Zazula, “Segmentation of ovarian ultrasound images using cellular neural networks trained by support vector machines,” Knowledge-based intelligent


information and engineering systems: proceedings of the 10th international conference, Bournemouth, UK, Oct. 2006, Vol. 3, pp. 515-522.

Matjaž Divjak, Aleš Holobar, Damjan Zazula, “On prototyping of virtual learning learning environments: teacher oriented approach,” Lifelong and blended learning, Vienna, Austria, 2006.

Matjaž Divjak, Damjan Zazula, “Disparity estimation based on blind decomposition of images by convolutive kernel compensation technique,” 48th International symposium ELMAR-2006 focused on multimedia signal processing and communications, Zadar, Croatia, Jun. 2006, pp. 77-80.

Dušan Heric, Božidar Potočnik, “Edge relaxation in image using directional hierarchical image decomposition,” Norsig 2006: proceedings of the 7th Nordic signal processing symposium, Reykjavik, Iceland, Jun. 2006, pp. 210-213.

Dušan Heric, Božidar Potočnik, “Generično okolje za simulacijo lokomotornih sistemov,” V partnerstvu z informatiko do poslovne odličnosti: zbornik posvetovanja, Dnevi slovenske informatike, Portorož, Slovenia, Apr. 2006.

Dušan Heric, Božidar Potočnik, “Multiscale edge detector,” 48th International symposium ELMAR-2006 focused on multimedia signal processing and communications, Zadar, Croatia, Jun. 2006, pp. 37-40.

Dušan Heric, Božidar Potočnik, Damjan Zazula, “Computer-aided learning of image segmentation,” Lifelong and blended learning, Vienna, Austria, 2006.

Dušan Heric, Damjan Zazula, “Segmentacija barvnih slik,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 173-176.

Aleš Holobar, Marco Gazzoni, Roberto Merletti, Damjan Zazula, “Dekompozicija večkanalnih površinskih elektromiogramov, posnetih med zmernimi dinamičnimi mišičnimi skrčitvami,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 275-278.

Aleš Holobar, Damjan Zazula, “Identification of motor unit discharge patterns in time-frequency plane,” 7th WSEAS Int. conf. on neural networks (NN`06), 7th WSEAS Int. conf. on fuzzy systems (ES`06), 7th Int. conf. evolutionary computing (EC`06), 7th WSEAS Int. conf. on acoustics & music: theory and applications (AMTA`06), 7th Int. conf. on mathematics and computers in biology and chemistry (MCBC`06), 7th WSEAS Int. conf. on mathematics and


computers in business and economics (MCBE`06), 7th Int. conf. on automation & information (ICAI`06), Cavtat, Croatia, Jun. 2006.

Rok Istenič, “A simulation tool for fluid blending,” Lifelong and blended learning, Vienna, Austria, 2006.

Rok Istenič, Damjan Zazula, “Uspešnost modela z Gaussovo porazdelitvijo pri dekompoziciji večkanalnih površinskih elektrogramov,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 259-262.

Mitja Lenič, Boris Cigale, Jurij Munda, “Zaznavanje plagiatov v dokumentih OpenOffice.org,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 325-328.

Mitja Lenič, Boris Cigale, Damjan Zazula, “Segmentacija ultrazvočnih slik s celično nevronsko mrežo, naučeno z metodo podpornih vektorjev,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 109-112.

Matej Mertik, Mitja Lenič, Gregor Štiglic, Peter Kokol, “Estimating software quality with advanced data mining techniques,” International conference on software engineering advances (ICSEA 2006), 2006.

Branko Pečnik, Božidar Potočnik, “Natančnost sistemov računalniškega vida na osnovi geometrije več pogledov,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 201-204.

Božidar Potočnik, “Assessment of region-based moment invariants for object recognition,” 48th International symposium ELMAR-2006 focused on multimedia signal processing and communications, Zadar, Croatia, Jun. 2006, pp. 27-32.

Božidar Potočnik, “Primernost nizko-nivojskih vizualnih značilk za ugotavljanje podobnosti med slikami,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 189-192.

Božidar Potočnik, “Segmentacija poljubnih digitalnih slik s postopki rojenja vzorcev,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 193-196.

Božidar Potočnik, “A spatial filter for dark regions detection,” 48th International symposium ELMAR-2006 focused on multimedia signal processing and communications, Zadar, Croatia, Jun. 2006, pp. 33-36.


Damijan Rebernak, Mitja Lenič, Marjan Mernik, “Teaching compiler construction using LISA tool,” Lifelong and blended learning, Vienna, Austria, 2006.

Smiljan Šinjur, “Generating the simulated environment for robots,” Lifelong and blended learning, Vienna, Austria, 2006.

Damjan Zazula, Aleš Holobar, “Blind source separation based on a single observation,” Biosignal processing and classification: proceedings of the 2nd international workshop on biosignal processing and classification, Setúbal, Portugal, Aug. 2006, pp. 76-85.

Damjan Zazula, Aleš Holobar, Matjaž Divjak, “Convolution kernel compensation applied ti 1D and 2D blind source separation,” SIGMAP 2006: proceedings of the third international conference on signal processing and multimedia applications, Setúbal, Portugal, Aug. 2006, pp. 126-133.

Damjan Zazula, Aleš Holobar, Matjaž Divjak, Dean Korošec, “Virtual environments for simulated learning and training,” Developing research in nursing, social care education and multisectoral cooperation, Maribor, Slovenia, 2006, pp. 67-74.

Boris Cigale, Damjan Zazula, “Sledenje zorenju mešičkov s pomočjo 3D ultrazvočnih posnetkov jajčnikov,” Računalniška obdelava slik in njena uporaba v Sloveniji 2006: zbornik strokovne konference ROSUS 2006, Maribor, Slovenia, Mar. 2006, pp. 54-59.

Vojko Flis, Jože Matela, Božidar Potočnik, Tomaž Tomažič, Nina Kobilica, “Oris nekaterih aplikacij analize slike v medicini,” Računalniška obdelava slik in njena uporaba v Sloveniji 2006: zbornik strokovne konference ROSUS 2006, Maribor, Slovenia, Mar. 2006, pp. 129-137.

Mitja Frangež, Božidar Potočnik, “Razpoznavanje registrskih tablic z nevronskimi mrežami,” Računalniška obdelava slik in njena uporaba v Sloveniji 2006: zbornik strokovne konference ROSUS 2006, Maribor, Slovenia, Mar. 2006, pp. 118-125.

Igor Hedrih, Damjan Zazula, “Sledenje mehanizma kamere znani obliki,” Računalniška obdelava slik in njena uporaba v Sloveniji 2006: zbornik strokovne konference ROSUS 2006, Maribor, Slovenia, Mar. 2006, pp. 110-117.

Dušan Heric, Božidar Potočnik, Damjan Zazula, “Rekonstrukcija objektov v volumskih slikah,” Računalniška obdelava slik in njena uporaba v Sloveniji 2006: zbornik strokovne konference ROSUS 2006, Maribor, Slovenia, Mar. 2006, pp. 68-73.

Jurij Rakun, Damjan Zazula, “Uporabnost računalniškega odkrivanja tiskarskih napak v industrijskih okoljih,” Računalniška obdelava slik in njena uporaba v Sloveniji 2006: zbornik strokovne konference ROSUS 2006, Maribor, Slovenia, Mar. 2006, pp. 90-96.


Mitja Lenič, Petra Povalej, Peter Kokol, “Impact of purity measures on knowledge extraction in decision trees,” Foundations and novel approaches in data mining, Berlin, Germany, 2006, pp. 229-242.


Aleš Holobar, Damjan Zazula: “Decomposition of surface electromyograms.,” presentation at the Politechnico di Torino, Torino, Italy, Jan. 19, 2006.

Damjan Zazula, Boris Cigale, Veljko Vlaisavljević: „The 3D ultrasound detection of ovarian follicles and their growth using multiresolution image analysis“, lecture in the framework of the School for Ultrasound diagnostics: gynaecology, Maribor, Feb. 18, 2006.

Damjan Zazula: „Introduction to statistical signal processing“, lecture on Graduate course on Advanced Techniques for biomedical Signal Processing – part 2, Torino, Italy, Sept. 5, 2006.

Damjan Zazula: „Introduction to higher-order statistics (cumulants)“, lecture on Graduate course on Advanced Techniques for biomedical Signal Processing – part 2, Torino, Italy, Sept. 6, 2006.

Aleš Holobar: “Principal component analysis and Independent component analysis of voluntary end electrically elicited EMG signals.,” lecture on Graduate course on Advanced Techniques for biomedical Signal Processing, Torino, Italy, Sept. 7, 2006.

Damjan Zazula: „A nonlinear extension of convolution kernel compensation“, lecture on Graduate course on Advanced Techniques for biomedical Signal Processing – part 2, Torino, Italy, Sept. 7, 2006.

Aleš Holobar: “The Convolution Kernel Compensation (CKC) method for surface EMG decomposition.,” lecture on Graduate course on Advanced Techniques for Biomedical Signal Processing, Torino, Italy, Sept. 7, 2006.

Damjan Zazula, Aleš Holobar: „Application of CKC in the case of few observations“, presenation at the University of Cyprus, Nicosia, Cyprus, Sept. 20, 2006.

Aleš Holobar, Damjan Zazula: “A novel approach to surface EMG decomposition: convolution kernel compensation,” presenation at the University of Cyprus, Nicosia, Cyprus, Sept. 20, 2006.


Aleš Holobar: “Decomposition of surface EMG into motor unit action potential trains: Analysis of features of individual motor units.,” lecture on Hands–on Course on Multichannel Surface EMG, Torino, Italy, Oct. 16, 2006.

Damjan Zazula: „Advanced EMG signal processing and perspectives“, lecture on Slovenian-Italian Workshop on quantitative needle and high resolution surface EMG, Ljubljana, Slovenia, Dec. 4, 2006.

Aleš Holobar: “Decomposition of surface EMG into the constituent motor unit action potential trains: theory and applications.,” lecture on Slovenian-Italian Workshop on quantitative needle and high resolution surface EMG, Ljubljana, Slovenia, Dec. 4, 2006.


Asst. Prof. Dr. Božidar Potočnik, Prof. Dr. Damjan Zazula, Dr. Matjaž Divjak, Dr. Mitja Lenič, Dr. Danilo Korže, Dr. Dušan Heric, Jurij Munda, Smiljan Šinjur, Boris Cigale, MSc, Daniel Bernad:

Computer-assisted image processing and its application in Slovenia 2006, conference, organisation and implementation, Maribor, Slovenia, Mar. 23, 2006.

Prof. Dr. Damjan Zazula: Special section Special Track CoLoS on the 9th international conference Interactive Computer-Aided Learning – ICL 2006, organization, Villach, Austria, Sept. 27-29, 2006.

Prof. Dr. Damjan Zazula, Asst. Prof. Dr. Aleš Holobar:

Slovenian-Italian Workshop on Quantitative Needle and High Resolution Surface EMG, workshop, organization, Clinical centre, Ljubljana, Slovenia, Dec. 4, 2006.

Prof. dr. Damjan Zazula: Reviewer for CIT - Journal of Computing and Information Technology.

Prof. dr. Damjan Zazula: Reviewer for Electrotechnical Review.

Prof. Dr. Damjan Zazula, Reviewers for EURASIP Signal Processing.


Asst. Prof. Dr. Aleš Holobar:


Reviewers for IEEE Transactions on Biomedical Engineering.

Prof. Dr. Damjan Zazula: Reviewer for Medical and Biological Engineering and Computing.


Reviewer for Circuits, Systems, and Signal Processing.

Asst. Prof. Dr. Aleš Holobar: Reviewer for EURASIP Signal Processing.

Prof. Dr. Damjan Zazula: Reviewer for Digital Signal Processing.

Dr. Dušan Heric: Reviewer for Image and Vision Computing.

Asst. Prof. Dr. Aleš Holobar: Reviewer for Journal of Electromyography and Kinesiology.

Asst. Prof. Dr. Aleš Holobar: Reviewer for Journal of Neurophysiology.

Asst. Prof. Dr. Aleš Holobar: Reviewer for IEEE Transactions on Biomedical Engineering.

Asst. Prof. Dr. Božidar Potočnik: Reviewer for Informacije MIDEM.

Prof. Dr. Damjan Zazula: Reviewer for Circuits, Systems, and Signal Processing.

Prof. Dr. Damjan Zazula: Reviewer for IEEE Transactions on Neural Systems and Rehabilitation Engineering.

Asst. Prof. Dr. Aleš Holobar: Reviewer for IEEE Transactions on Circuits & Systems.

Asst. Prof. Dr. Aleš Holobar: Reviewer for Medical Engineering & Physics.

Asst. Prof. Dr. Aleš Holobar: Reviewer for IEEE Signal Processing Letters.

Asst. Prof. Dr. Aleš Holobar: Reviewer for Biomedical Signal Processing and Control.


Asst. Prof. Dr. Božidar Potočnik: Reviewer for Medical & biological engineering & computing.

Asst. Prof. Dr. Božidar Potočnik: Reviewer for WSEAS Transactions on Computers.

Asst. Prof. Dr. Božidar Potočnik: Reviewer for WSEAS Transactions on Information Science and Applications.


Dr. Mitja Lenič: A course “Software Design and Implementation” has been given to undergraduate students of Computer Science. A course was a part of Socrates-Erasmus staff mobility project, formal call, Madeira, Portugal, Nov. 21 to Jan. 27, 2006.

Asst. Prof. Dr. Aleš Holobar: Part-time project research work at the Laboratory for Engineering of the Neuromuscular System – LISiN, Politecnico di Torino, Italy, Jan. to Nov., 2006.

Rok Istenič: Research visit to the Laboratory for Engineering of the Neuromuscular System – LISiN, Politecnico di Torino, Italy, Aug. 26. to Sept. 24, 2006.

Prof. Dr. Damjan Zazula: Visit and lectures at the Laboratory for Engineering of the Neuromuscular System – LISiN, Politecnico di Torino, Italy, Sept. 4-10, 2006.


Visit and lectures at the University of Cyprus, Nikosia, Sept. 18-23, 2006.

Dr. Mitja Lenič: Visit and lectures at the University of Jyväskylä, Finland, Sept. 20-27, 2006.

GUESTS AND VISITORS

Siane Slami (IUT "A", Lille, France):

Undergraduate research work in Computer Vision research field, Apr. 1 to Jun. 30, 2006.


Franck Angely (Ecole Centrale de Nantes, Nantes, France):

Undergraduate research work on analysis of 24-hour electrocardiogram recordings, Apr. 10 to Aug. 4, 2006.

Prof. Dr. Roberto Merletti, Dr. Marco Alessandro Minetto (LISiN, Politecnico di Torino, Turin, Italy):

Research visit in the framework of Slovenian-Italian bilateral project Extraction of Clinic-Relevant Information from MultichannelSurface Electromyograms, visit, Dec. 2–5, 2006.

Prof. dr. Constantinos Pattichis, dr. Prodromos Kaplanis, dr. Christodoulos Christodoulou (University of Cyprus, Nikosia, Cyprus):

Research visit in the framework of Slovenian-Cypriot bilateral project collaboration and arrangements with the partners from the Teaching Hospital of Maribor, Dec. 10-14, 2006.


Jurij Rakun: second place on the IEEE Region 8 Student Paper Contest final, paper title The Computer-Aided Detection of Inferior Printing Quality and Errors, mentor Prof. Dr. Damjan Zazula, Malaga, Spain, May 19, 2006.

CS - 34 Heterogeneous Computer Systems Laboratory

HETEROGENEOUS COMPUTER SYSTEMS LABORATORY

Head:

Assoc. Prof. Dr. Milan Ojsteršek

Phone: +386 2 220 74 51


RESEARCH PROJECTS


Applied projects

EKOFARM3 Centraliziran sistem za kontrolo ekološkega kmetovanja (Centralized system for ecofarming controls)

Leader: Assoc. Prof. Dr. Milan Ojsteršek (Faculty of Electrical Engineering and Computer Science)

Participants: Ervin Schaffranietz, MSc

Financed by: Ministry of Agriculture, Forestry and Food

Farmers, who want to trade their crops, products or meat as ecological products, have to breed, grow or produce them in a way that meets strict ecological criteria. Within this project, the system of the previous project has been upgraded to enable support for more controlling organizations. They operate via a central server at the Ministry of Agriculture providing central control.

CHP Spletni portal CHP (CHP Web Portal)

Leader: Assoc. Prof. Dr. Milan Ojsteršek (Faculty of Electrical Engineering and Computer Science)

Participants: Branko Horvat, MSc; Ervin Schaffranietz, MSc; Janez Brezovnik; Albin Bregant; Borut Gorenjak, MSc

Financed by: Municipality of Sežana, Ljudska univerza Koper, Municipality of

Heterogeneous Computer Systems Laboratory CS - 35

Selnica, Faculty of Mechanical Engineering, University of Maribor, Municipality of Moravske Toplice, Municipality of Pivka, Municipality of Kidričevo, Lokalna turistična organizacija Kokra, Municipality of Videm pri Ptuju, Municipality of Slovenska Bistrica, Municipality of Oplotnica, Municipality of Kungota, Municipality of Zagorje ob Savi, Municipality of Maribor, Univerzitetna knjižnica Maribor, Municipality of Radovljica, Municipality of Koper, Faculty of Electrical Engineering and Computer Science, Municipality of Sveti Jurij, Faculty of Business and Economics Maribor, Avditorij Portorož, Fakulty for Civil Engineering, University of Maribor, Municipality of Piran, Municipality of Postojna, Municipality of Muta, Municipality of Zreče, Municipality of Kranj, Municipality of Hoče-Slivnica

Portal infrastructure facilitates creating, integrating, and managing information documents. This way, we can achieve higher efficiency of accessing such information since users spend less time to find, use, and analyze information. In addition, administrators spend less time helping users. The basic features of portals are: documents management, information search, integration of application services and content within an information system with external information systems, cross-referencing content and services, providing collaboration services, information categorization, providing independence between data and its presentation in various media, multi-lingua information presentation, authentication and authorization of access to data and services and security consideration, and personalization with customization. The portal is being updated with new functionality on a regular basis.



DKMORS Izdelava digitalne knjižnice Ministrstva za obrambo Republike Slovenije (Developing the Digital Library of the Ministry of Defence of the Republic of Slovenia)

Leader: Assist. Prof. Dr. Dejan Dinevski (University of Maribor), Assoc. Prof. Dr. Milan Ojsteršek (Faculty of Electrical Engineering and Computer Science)

Participants: Branko Horvat, MSc; Andrej Brodnik; Dr. Metka Zorič-Venuti; Janez Brezovnik; Prof. Dr. Peter Kokol

Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia, Ministry of Defence

CS - 36 Heterogeneous Computer Systems Laboratory


The main purpose of the project was developing and employing information technology for establishing a special military digital library based on intra- and Internet environment. The principal tasks were research into the feasibility of establishing a digital library as an upgrade of the classical library and the research of the best computer hardware, software and communication solution for accessing the library-information sources of the library-information system of the Ministry of defence for the users/employees of the Ministry. The project aimed at developing a computer-aided model of the digital library with an upgrade ability and the suggestion of digital library implementation. Within 2006, the phases of modelling, research, implementation, testing, and final deployment has been accomplished. The project was brought successfully to its end.

PUBLICATIONS

Aleš Holobar, Milan Ojsteršek, Damjan Zazula, “Distributed Jacobi joint diagonalization on clusters of personal computers,” Int. j. parallel program., Vol. 34, No. 6, pp. 509-530, 2006.

Branko Horvat, Milan Ojsteršek, “Towards the novel classification schemes in digital libraries,” WSEAS transactions on information science and applications, Vol. 3, Iss. 12, pp. 2571-2576, Dec. 2006.

Rok Kokalj, et al. (12 avtorjev), “Nacionalna strategija e-izobraževanja, 2006-2010, E-izobraževanje: pot v družbo najuspešnejših,” Vzgoja in izobraževanje v informacijski družbi: zbornik konference, 2006.

Geometric Modelling and Multimedia Algorithms Laboratory CS - 37

GEOMETRIC MODELLING AND MULTIMEDIA ALGORITHMS LABORATORY

Head:

Prof. Dr. Borut Žalik

Phone: +386 2 220 74 71


RESEARCH PROJECTS


Applied projects

7785/18140/SR Namenska programska oprema s področja algoritmov računalniške geometrije in GIS (Special purpose software library from area of computational geometry and GIS algorithms)

Leader: Prof. Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science)

Participants: Dr. Mirko Zadravec, Denis Obrul Project partners: S&T Hermes Plus

Financed by: S&T Hermes Plus

The aim of the project is the update of a software library for the management of a topological system of polygons. The software library is implemented in Java and represents a core of the software solution for the application of subsidies in agriculture. The S&T Slovenija d.d. company is developing this software solution for the Agency of the Republic of Slovenia for Agricultural Markets and Rural Development (AAMRD). The extended library will offer existing functionality of topological operations on polygons and it will also offer search for neighbours of small polygons, the merging of such polygons with larger polygons, move of an edge, informing user about polygons with many points, and the solution of problems when two holes of polygon touch in one point.

CS - 38 Geometric Modelling and Multimedia Algorithms Laboratory


J1-7218 Algoritmi za analizo dodeljevanja lokacij (Algorithms for analysing facility location)

Leader: Justo Sergio Cabello (Institute for Mathematics, Physics and Mechanics, University of Ljubljana)

Participants: Asst. Prof. Dr. Krista Rizman Žalik, Prof. Dr. Borut Žalik Project partners: Institute for Mathematics, Physics and Mechanics, University of

Ljubljana


In this project, we consider problems arising in facility location analysis and we will provide efficient algorithmical solutions to them. Whenever facilities have to be placed or removed, we can search for a model to quantitatively measure the impact of the decision, and the best decision translates into an optimization problem. The functions to optimize may be simple ones, but in most real applications we have to deal with a trade-off between different criteria. When we aim for efficient algorithms for solving these different problems, the algorithms need be tailored to each particular problem, and different problems call for drastically different algorithmical solutions. The techniques to be used in our project will be mainly drawn from the fields of computational geometry, graph algorithms and data structures. The interaction between these fields and location analysis has been proven and keeps being successful.

M2-0141 Razvoj sistema za simuliranje realistične pokrajine za bojno usposabljanje posadk (Development of a system for visualization of realistic terrain required for training battle crews)

Leader: Dr. Gregor Klajnšek (Faculty of Electrical Engineering and Computer Science)

Participants: Blaž Repnik, Bojan Rupnik, Dr. Mirko Zadravec, Asst. Prof. Dr. Sebastian Krivograd

Project partners: EM. Tronic d.o.o.


The goal of the project is to create a software system that would support as realistic representation of terrain as possible using existing hardware in the middle price range. The model of the terrain will be based upon a digital model of relief, but the user will also be able to change the geometry of the terrain through an external application. Beside the realistic representation of the terrain, the system will support visualization of static (trees, houses, electrical wiring, …) and dynamic objects (targets) that can be found on the real training polygon. Because the aim of the project is to support efficient tactical training of battle crews,


the system will be able to perform the visualization of the training polygon from various different angles simultaneously and offer the possibility of simulating the interaction with some specific battle devices through special user interfaces.

M2-0138 Razvoj in integracija prikaza lokacije klicočega v GIS (Development and integration of a system for locating caller in GIS)

Leader: Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science)

Participants: Blaž Repnik Project partners: IGEA d.o.o., Faculty of Mechanical Engineering, University of

Ljubljana


The aim of this project is determining the location of the caller, who calls the number 112. In the case of an accident, the location of the caller is of crucial importance. This information should be related with the existing system GIS_UJME. In this way the reaction time of the intervention groups is reduced. During this project, the possibilities of passing the geo-location of the caller from the stationary, mobile, and IP phones of all providers located in Slovenia will be investigated. After this, prototype implementation and integration with the existing system GIS_UJME will be carried out.


BI-CN/06-07/03 Research on the algorithms of Computer Graphics and Computational Geometry

Leader: Prof. Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science), Yong Kui Liu (Dalian Nationalities University, College of Computer Science and Engineering)

Participants: Asst. Prof. Dr. Matej Gomboši, Asst. Prof. Dr. David Podgorelec, Asst. Prof. Dr. Krista Rizman Žalik, Dr. Mirko Zadravec, Dr. Gregor Klajnšek, Vid Domiter, Asst. Prof. Dr. Sebastian Krivograd

Project partners: Dalian Nationalities University, College of Computer Science and Engineering

Financed by: Government of Peoples Republic of China, Slovenian Research Agency, Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije

An informal cooperation between both research groups in the research areas of algorithms of


computer graphics and computational geometry was established as early as 2002. Before this common project had started, this cooperation had already resulted in two original scientific papers. Through the project, we strengthened our cooperation, focused on the development of new methods, which are numerically stable and computationally efficient. We have identified three research topics as the basis for further cooperation: general voxel traversing algorithm; algorithms for polygon clipping and set operations between regions; approximation and compression of 3D free-formed surface models. To date, an original scientific paper has been accepted for publication as a result of this bilateral project, and will be published soon.

COST A27 Understanding pre-industrial structures in rural and mining landscapes


Participants: Asst. Prof. Dr. Matej Gomboši, Asst. Prof. Dr. Sebastian Krivograd, Dr. Gregor Klajnšek, Dr. Mirko Zadravec, Vid Domiter, Boštjan Pivec, Denis Špelič, Asst. Prof. Dr. David Podgorelec

Project partners: European Union

Financed by: European Union, Slovenian Research Agency

The COST A27 action incorporates three working groups. The Laboratory for Geometric Modelling and Multimedia Algorithms (the Gemma Lab) joined the third working group (WG3: Virtual Landscapes and Databases) in 2005 to participate in the development of geographic information systems (GIS) solutions for storage, visualization and processing of spatial data obtained from research activities of other project groups. In 2006, the Gemma Lab members participated in both project meetings, on the Greek island Samos and in Ghent, Belgian. We have prepared materails for the project web-page, and started work on a common GIS-related book. We have also gained some valuable testing data urgently needed for evaluation and improvements of our algorithms for the compression, simplification and progressive transmission of spatial data.


Applied project

HPlus-GERK Programska oprema za operacije nad območji GERK (Special purpose software library for performing topological operations on GERK areas)

Leader: Asst. Prof. Dr. David Podgorelec (Faculty of Electrical Engineering


and Computer Science) Participants: Prof. Dr. Borut Žalik, Dr. Mirko Zadravec, Dr. Gregor Klajnšek Project partners: S&T Hermes Plus


Duration: Dec. 2005 to Mar. 2006

The goal of the project was to extend the software library, created inside a related project, with additional functionality required for performing topological operations on GERK areas. The library represents a core of the software solution for the application of subsidies in agriculture. The S&T Slovenija d.d. company developed this software solution for the Agency of the Republic of Slovenia for Agricultural Markets and Rural Development (AAMRD). The additional functionality incorporates limiting the polygons input inside the boundaries of GERK, computing the intersections between the input polygons and those polygons, representing the layers (OMD, VVO,…), and automatic void filling inside the GERK area by the software-created polygons.

HPlus-GIS Namenska programska oprema za podporo urejevalniku mnogokotnikov v okolju GIS (Special purpose software library for support of the GIS polygon editor)

Leader: Dr. Gregor Klajnšek (Faculty of Electrical Engineering and Computer Science)

Participants: Prof. Dr. Borut Žalik, Dr. Mirko Zadravec Project partners: S&T Hermes Plus


Duration: Dec. 2005 to Mar. 2006

The aim of the project was the development of a software library for the management of topological system of polygons. The library represents a core of the software solution for application of subsidies in agriculture. The S&T Slovenija d.d. company developed this software solution for the Agency of the Republic of Slovenia for Agricultural Markets and Rural Development (AAMRD). The library offers functionality for the execution of simple topological operations (ie. insertion of points, deletion of points, move of points, insertion of polygons, deletion of polygons, merge of polygons,…) as well for execution of advanced operations, such as ensuring topological consistency of polygons, determination of intersections between polygons and performing Boolean operations on polygons (map overlay of polygons). The software library is implemented in Java.


ZEIA01 Modeliranje 3D terena za programski paket GEOS (3D Terrain Modelling for GEOS program package)


Participants: Boštjan Pivec, Bojan Rupnik Project partners: ZEIA d.o.o

Financed by: ZEIA d.o.o

Duration: Nov. 2005 to Mar. 2006

The goal of the project was to build a module for a GEOS program package which has been developed by ZEIA company. With this module it is possible to realistically visualize 3D terrain according to input triangular mesh. The module also supports different lighting effects and colourisation for triangles, camera walk-over terrain, rotatiton of 3D view, loading and mapping DOF (digital ortophoto aeroimages) in various file formats (TIFF, BMP, JPEG).


BI-GR/01/05 Web GIS application in the East Aegean area and algorithms of computational geometry

Leader: Prof. Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science), Andreas Vassilopoulos (Geocultural Park Of East Aegean “PYTHAGORAS”)

Participants: Asst. Prof. Dr. Matej Gomboši, Dr. Gregor Klajnšek, Dr. Mirko Zadravec, Vid Domiter, Asst. Prof. Dr. Sebastian Krivograd, Asst. Prof. Dr. David Podgorelec

Project partners: Geocultural Park Of East Aegean “PYTHAGORAS”

Financed by: Slovenian Research Agency, Goverment of Greece, Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije


The main project goal was the development of a Web GIS application, which collects environmental parameters and uses them for flood simulation and flood prediction. At the same time, the application also reports when a critical water level is reached or a potential danger threatens the particular area. The Greek side has successfully established a theorethical influence model, where the major influence goes to slope, geological structure of the surface, and flora.The central activity of the Slovenian side was a study of the use of


computer geometry algorithms in rainfall observation and water movement prediction. The Slovenian side has developed a rasterization algorithm of a river network, which helps distribute river parts in information cells and as such contributes to the final decision regarding water behaviour.

BI-CZ/05-06-005 Bilateral cooperation in computational geometry research for visualization

Leader: Prof. Dr. Borut Žalik (Faculty of Electrical Engineering and Computer Science), Ivana Kolingerova (University of West Bohemia)

Participants: Asst. Prof. Dr. David Podgorelec, Vid Domiter, Dr. Mirko Zadravec, Dr. Gregor Klajnšek, Asst. Prof. Dr. Sebastian Krivograd, Asst. Prof. Dr. Matej Gomboši

Project partners: University of West Bohemia

Financed by: Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije, Government of the Czech Republic, Slovenian Research Agency


In this bilateral project, our scientific colaboration with the research group from the University of West Bohemia in Pilsen, in the development of algorithms for applied computational geometry successfully continued. In 2006, researchers from both groups spent 18 days visiting their partner universities in Slovenia or the Czech Republic. A common paper in a recognized internation scientific journal Computers & Geosciences has been published as the project’s outcome. In addition, the exchange of ideas has encouraged, refined and accelerated several independent publications of researchers from one or other groups. Among the problems that were discussed and collectively solved, let us mention new methods, improvements and applications of 2D and 3D Delaunay triangulation, triangular mesh compression with triangle strips, surface reconstruction from a point cloud, new algorithms and applications of geometric data sorting, 3D morphing and multimorphing.

PUBLICATIONS

Gorazd Hren, Anton Jezernik, Borut Žalik, “Web-based framework for bidirectional link of VMRL and CAD assemblies,” International journal of product lifecycle management, Vol. 1, No. 3, pp. 303-320, 2006.

Ivana Kolingerová, Borut Žalik, “Reconstructing domain boundaries within a given set of points, using Delaunay triangulation,” Comput. geosci., Vol. 32, pp. 1310-1319, 2006.


Sebastian Krivograd, Mladen Trlep, Borut Žalik, “An algorithm for determination of topology from a set of line segments,” WSEAS Trans. Comput., Vol. 5, Iss. 7, pp. 1582-1588, Jul. 2006.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A compression method for FEM data represented by quadrilaterals,” WSEAS transactions on computer research, Vol. 1, Iss. 2, pp. 207-213, 2006.

Krista Rizman Žalik, “Discovering significant biclusters in gene expression data,” WSEAS transactions on information science and applications, Vol. 2, iss. 9, pp. 1454-1461, Sep. 2005.

Vid Domiter, Borut Žalik, “Constrained delaunay triangulation with sweeping,” Contrib. geom. model. multimed., Vol. 6, No. 3, pp. 1-17, 2006.

Branko Kaučič, Borut Žalik, “Comparison of heuristics for terrain guarding,” Contrib. geom. model. multimed., Vol. 6, No. 2, pp. 1-17, 2006.

David Podgorelec, Denis Špelič, “Handling the geometrical redundacy in 2D geometric constraint solving,” Contrib. geom. model. multimed., Vol. 6, No. 1, pp. 1-35, 2006.

Denis Špelič, Franc Novak, Borut Žalik, “2D Delaunay triangulation benchmarks,” Contrib. geom. model. multimed., Vol. 6, No. 4, pp. 1-11, 2006.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A compression method form FEM quadrilateral data,” 6th WSEAS Int. Conf. on Applied Computer Science (ACS'06), Tenerife, Spain, Dec. 2006, pp. 402-407.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A rapid algorithm for construction from a set of line segments,” 9th WSEAS Int. Conf. on Applied Mathematics (MATH'06), 5th WSEAS Int. Conf. on Telecommunications and informatics (TELE-INFO'06), 5th WSEAS Int. Conf. on Signal processing (SIP'06), Istanbul, Turkey, May 2006.

Sebastian Krivograd, Mladen Trlep, Borut Žalik, “A tool for efficient transferring of triangular FEM elements through internet,” IEEE CEFC 2006: digest book, The twelfth biennal IEEE conference on electromagnetic field computation, Miami, Florida, May 2006, pp. 220.

Boštjan Pivec, “Algoritem s sestavljanjem delov površja,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 205-208.

Krista Rizman Žalik, “Fuzzy c-means clustering and facility location problems,” Proceedings of the 10th IASTED International Conference on Artificial Intelligence and Soft Computing, Palma de Mallorca, Spain, Aug. 2006, pp. 256-261.


Mirko Zadravec, Gregor Klajnšek, David Podgorelec, Matic Petek, “Geometrijska in topološka podpora operacijam v GIS,” Sodobne tehnologije in storitve: OTS'2006, zbornik enajste konference, Maribor, Slovenia, Jun. 2006, pp. 111-122.

Borut Žalik, Algoritmi računalniške geometrije: Maribor, Slovenia, Faculty of Electrical Engineering and Computer Science, 2006.


Sebastian Krivograd: “Compression of FEM Data Represented by Triangles,” presentation on department of Computer Graphics and Computational Geometry, Dalian, People Republic of China, Mar. 22, 2006.

Matej Gomboši: “Inclusion Algorithms with Geometric Buffers,” presentation on department of Computer Graphics and Computational Geometry, Dalian, People Republic of China, Mar. 22, 2006.

Matej Gomboši: “Short Presentation of Faculty of Electrical Engineering and Computer Science,” presentation on department of Computer Graphics and Computational Geometry, Dalian, People Republic of China, Mar. 22, 2006.

Sebastian Krivograd: “Short Presentation of Slovenia and Maribor,” presentation on department of Computer Graphics and Computational Geometry, Dalian, People Republic of China, Mar. 22, 2006.

David Podgorelec: “Significance of Adaptive Sorting Algorithms in Geometric Applications,” presentation at the Department of computer science and engineering, Plzen, Czech Republic, June 8, 2006.

Vid Domiter: “Terrain Construction from Isolines,” presentation of project work at Department of Geology, Natioal university of Athens, Athens, Greece, Oct. 11, 2006.

Denis Špelič: “sparcoNET – SPort, heAlth and ReCreatiOn NETwork: Application developed for Microsoft's ImagineCup competition,” presentation at the Department of computer science and engineering, Plzen, Czech Republic, Nov. 7, 2006.


Prof. Dr. Borut Žalik: Reviewer for Computers & Graphics.


Prof. Dr. Borut Žalik: Reviewer for Computers & geosciences.

Prof. Dr. Borut Žalik: Reviewer for IEEE Transactions on Systems, Man, and Cybernetics. Part A: Systems and humans..


Asst. Prof. Dr. Matej Gomboši, Asst. Prof. Dr. Sebastian Krivograd:

Visit in a frame of project "Research on the algorithms of Computer Graphics and Computational Geometry", scientific collaboration, Dalian, People Republic of China, Mar. 14–28, 2006.

Asst. Prof. Dr. David Podgorelec, Prof. Dr. Borut Žalik:

Visit in a frame of bilateral cooperation in computational geometry research for visualisation, scientific collaboration, Plzen, Czech Republic, June 4–9, 2006.

Asst. Prof. Dr. Matej Gomboši, Denis Špelič:

Visit within bilateral project "Web GIS application in the East Aegean area and algorithms of computational geometry", scientific collaboration, Athens, Greece, June 5–12, 2006.

Vid Domiter, Boštjan Pivec:

Visit within bilateral project "Web GIS application in the East Aegean area and algorithms of computational geometry", scientific collaboration, Athens, Greece, Oct. 8–15, 2006.

Asst. Prof. Dr. David Podgorelec, Denis Špelič:

Visit in a frame of bilateral cooperation in computational geometry research for visualisation, scientific collaboration, Plzen, Czech Republic, Nov. 5–10, 2006.

Vid Domiter, Boštjan Pivec:

Visit within bilateral project "Web GIS application in the East Aegean area and algorithms of computational geometry", scientific collaboration, Athens, Greece, Dec. 12–17, 2006.


GUESTS AND VISITORS

Ilias Giotitsas, Joanna Manta, Kostis Foukarakis (Geocultural Park Of East Aegean “PYTHAGORAS”, Athens, Greece):

Visit in the frame of project "Development of a GIS for informing the local authority about environmental issues", scientific collaboration, Feb. 26 to Mar. 3, 2006.

Jindra Parus (University of West Bohemia, Plzen, Czech Republic):

Visit in a frame of project "Bilateral cooperation in computational geometry research for visualization", scientific collaboration, June 19–24, 2006.

Josef Kohout, Ivana Kolingerova (University of West Bohemia, Plzen, Czech Republic):

Visit in a frame of project "Bilateral cooperation in computational geometry research for visualization", scientific collaboration, Oct. 22–27, 2006.

Yannis Maglaras (Geocultural Park Of East Aegean “PYTHAGORAS”, Athens, Greece):

Visit in the frame of bilateral project "Web GIS application in the East Aegean area and algorithms of computational geometry", scientific collaboration, Nov. 28 to Dec. 2, 2006.

CS - 48 Programming methodology laboratory

PROGRAMMING METHODOLOGY LABORATORY

Head:

Assoc. Prof. Dr. Marjan Mernik

Phone: +386 2 220 74 55


RESEARCH PROJECTS


Industrial projects

ELL Programska oprema za elektronsko vodenje likvidacijskih listov (Electronic support for digital signings of documents)

Leader: Assoc. Prof. Dr. Marjan Mernik (Faculty of Electrical Engineering and Computer Science)

Participants: Matej Črepinšek, Tomaž Kosar

The project goal is to develop a software for company expenses. The project was carried out in Lotus Notes platform and includes document input, interactive monitoring and support for payment process. The main features are centralized control of documents and electronic notification of people involved in the signing process.



BI-US/05-06/009 Grammar Interface Technology and Applications in Software Engineering

Leader: Assoc. Prof. Dr. Marjan Mernik (Faculty of Electrical Engineering and Computer Science), Barrett Bryant (University of Alabama at

Programming methodology laboratory CS - 49

Birmingham) Participants: Faizan Javed, Matej Črepinšek, Tomaž Kosar, Alan Sprague,

Damijan Rebernak, Jeff Gray Project partners: University of Alabama at Birmingham



Grammatical inference (grammar induction or language learning) is a process of learning grammar from positive and/or negative sentences. Machine learning of grammars finds many applications in syntactic pattern recognition, computational biology, natural language acquisition, software engineering, etc. Heuristic and evolutionary algorithms were successfuly applied in inferring context-free grammars for small domain-specific languages. Furthermore, we explored the usability of grammatical inference in other applications, such as metamodel recovering.

BI-PT/04-06-008 Grammar-based Systems

Leader: Assoc. Prof. Dr. Marjan Mernik (Faculty of Electrical Engineering and Computer Science), Pedro Henriques (University of Minho)

Participants: Matej Črepinšek, Maria Joao Pereira Varanda, Tomaž Kosar, Damijan Rebernak




The project is a continuation of our previous successful project entitled "Automatic generation of Language-based tools" where we have shown that from formal language definition (attribute grammars) not just complete compiler/interpreter can be automatically generated but also many other language-based tools such as: syntax-directed editors, type checkers, visualizers, animators, etc. In the project the importance of grammars (e.g. context-free grammars, attribute grammars) in various research fields (e.g. software engineering, information theory, evolutionary computations) was further explored. Their benefits were investigated and compared to ordinary systems.

PUBLICATIONS

Janez Brest, Sašo Greiner, Borko Bošković, Marjan Mernik, Viljem Žumer, “Self-adapting control parameters in differential evolution: a comparative study on numerical benchmark problems,” IEEE trans. evol. comput., Vol. 10, No. 6, pp. 646-657, Dec. 2006.


Tomaž Kosar, Marjan Mernik, “Embedded domain-specific languages in prolog,” Acta electrotech. inform., Vol. 6, No. 3, pp. 53-58, 2006.

Damijan Rebernak, Marjan Mernik, Pedro Rangel Henriques, Daniela Da Cruz, Maria Joao Varando Pereira, “Specifying Languages Using Aspect-oriented Approach: AspectLISA,” CIT. J. Comput. Inf. Technol., Vol. 14, No. 4, pp. 343-350, 2006.

Damijan Rebernak, Marjan Mernik, Pedro Rangel Henriques, Maria Joao Varando Pereira, “AspectLISA: an aspect-oriented compiler construction system based on attribute grammars,” Electronic notes in theoretical computer science, No. 2, pp. 37-53, 2006.

Bogdan Filipič, Iztok Fister, Marjan Mernik, “Evolutionary search for optimal combinations of markers in clothing manufacturing,” Genetic and Evolutionary Computation Conference: GECCO 2006, Seattle, Washington, USA, Jul. 2006, pp. 1661-1666.

Marjan Horvat, Milan Zorman, “Izboljšava odločitvenih dreves z evolucijsko večkriterijsko optimizacijo,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 75-78.

Faizan Javed, Marjan Mernik, Alan Sprague, Barrett Richard Bryant, “Incrementally inferring context-free grammars for domain-specific languages,” SEKE 2006: proceedings [of] the 18th International Conference on software engineering & knowledge engineering, San Francisco, California, USA, Jul. 2006, pp. 363-368.

Damijan Rebernak, Matej Črepinšek, Marjan Mernik, “Web service for designing and implementing formal languages,” ITI 2006: proceedings of the 28th International Conference on Information Technology Interfaces, Cavtat/Dubrovnik, Croatia, Jun. 2006, pp. 463-468.

Damijan Rebernak, Mitja Lenič, Marjan Mernik, “Teaching compiler construction using LISA tool,” Lifelong and blended learning, Vienna, Austria, 2006.

Damijan Rebernak, Marjan Mernik, Pedro Rangel Henriques, Daniela Da Cruz, Maria Joao Varando Pereira, “Specifying languages using aspect-oriented approach: AspectLISA,” ITI 2006: proceedings of the 28th International Conference on Information Technology Interfaces, Cavtat/Dubrovnik, Croatia, Jun. 2006, pp. 695-700.

Liu Shih-Hsi, Marjan Mernik, Barrett Richard Bryant, “Entropy-driven exploration and exploitation in evolutionary algorithms,” Bioinspired optimization methods and their applications: proceedings of the Second International Conference on Bioinspired Optimization Methods and their Applications - BIOMA 2006, Ljubljana, Slovenia, Oct. 2006, pp. 15-24.


Xiaoqing Wu, Barrett Richard Bryant, Jeffrey G. Gray, Marjan Mernik, “Separation of concerns in compiler development using aspect-orientation,” Applied computing 2006: proceedings of the 2006 ACM symposium on applied computing, Dijon, France, Apr. 2006, Vol. 2, pp. 1585-1590.


Marjan Mernik: “Invited lecture,” recent Advances in Compiler Generators: The LISA Approach, Covilha, Portugal, March 17, 2006.

Tomaž Kosar: “Invited lecture,” a comparison study on various implementation approaches of domain-specific language, Sydney, Australia, July 10, 2006.

Damijan Rebernak: “Invited lecture,” aspectLISA: an aspect-oriented compiler construction system based on attribute grammars, Sydney, Australia, July 10, 2006.


Assoc. Prof. Dr. Marjan Mernik: Programme committee member, conference, Symposium on Applied Computing, Dijon, France, Apr. 23–27, 2006.

Assoc. Prof. Dr. Marjan Mernik: Programme committee member, conference, Bioinspired Optimization Methods and their Applications, Ljubljana, Slovenia, Oct. 9–10, 2006.

Assoc. Prof. Dr. Marjan Mernik: Programme committee member, conference, Domain-Specific Aspect Languages, Portland, United States, Oct. 23, 2006.

Assoc. Prof. Dr. Marjan Mernik: Reviewer for IEEE Transactions on Evolutionary Computation.

Assoc. Prof. Dr. Marjan Mernik: Reviewer for Information and Software Technology Journal.

Assoc. Prof. Dr. Marjan Mernik: Reviewer for Science of Computer Programming.



Assoc. Prof. Dr. Marjan Mernik: Research work on project "Grammar Inference Technology and Applications in Software Engineering", scientific collaboration, Birmingham, United States, May 29 to Aug. 1, 2006.

Tomaž Kosar, Damijan Rebernak:

Overview of research at computing department and possibilities for joint collaborations, scientific collaboration, Sydney, Australia, July 10–20, 2006.

GUESTS AND VISITORS

Tony Sloane (Macquarie University, Sydney, Australia):

Research work on domain-specific languages, scientific collaboration, Apr. 3–5, 2006.

Maria Joao Pereira Varanda, Pedro Henriques, Daniela da Cruz (University of Minho, Braga, Portugal):

Research work on project "Grammar-based Systems", scientific collaboration, June 25–28, 2006.

Jan Heering (Centrum voor Wiskunde en Informatica, Amsterdam, The Netherlands):

Research work on domain-specific languages, scientific collaboration, Aug. 16–18, 2006.

Maria Ganzha, Marcin Paprzycki (Warsaw School of Social Psychology, Warsaw, Poland):

IEEE Distinguish lecture "Introduction to Software Agents and their Applications", scientific collaboration, Oct. 12–14, 2006.


Denis Justinek, Igor Tasič, Denis Špelič, Sergej Jurečko, Tomaž Kosar: sparcoNET team acchieved following results on Imagine Cup competition: 1. place on national competition in Ljubljana, 1. place on central and eastern Europe, Maribor, 7. - 12. place on world final competition, India, Aug. 7, 2006.

Tomaž Kosar: award for success achieved on ImagineCup competition, Ljubljana, Slovenia,


Oct. 10, 2006.

Assoc. Prof. Dr. Marjan Mernik: FERI award for research achievements, Maribor, Slovenia, Dec. 14, 2006.

Institute of Informatics IN - 1

INSTITUTE OF INFORMATICS

Head:

Prof. Dr. Ivan Rozman

Phone: +386 2 220 74 10


URL: http://www.in.feri.uni-mb.si/

Contemporary society is highly dependant on information communication technologies and their applications. The efficiency of using them is related to the successful usage and fusion of technical/technological and business/organizational knowledge and skills. Studies of Informatics, therefore, in addition to some foundation knowledge that is common to computing (such as computer networks, algorithms, operation systems, programming, and databases) offers in-depth knowledge relating to the analysis, design, and implementation of information systems, strategic planning of informatics, and organization. The acquired knowledge enables successful project management and usage of modern methodologies for the development and reengineering of information systems. The main mission of informatics is to assure (better) business decision making, which is a consequence of modelling, modernizing, and improving the efficiency of business processes. To achieve this, it is reasonable to rest on the existing comprehensions, reference models, and applications of methods and technologies for knowledge management. Recognition of the importance of systematic approaches, usage of standards and establishment of quality assurance systems is reflected in better information systems and business solutions. The significance of information security and protection originates from the characteristics of contemporary operations – openness and interoperability. In addition to technology-related aspects of integration informatics need to be capable of managing the gap between information technologies and different groups of users. The connection role of informatics requires them to be familiar with knowledge and skills related to communication methods and team work and,

IN - 2 Institute of Informatics

nevertheless, they should be aware of the ever growing impact of advanced technological solutions on societal processes.

Information Systems Laboratory


Employees: Assoc. Prof. Dr. Marjan Heričko; Assoc. Prof. Dr. Bojan Novak; Assoc. Prof. Dr. Branko Matjaž Jurič; Asst. Prof. Dr. Romana Vajde Horvat; Asst. Prof. Dr. Vili Podgorelec; Asst. Prof. Dr. Aleš Živkovič; Tomislav Rozman, PhD; Davor Bonačić, MSc; Boštjan Kežmah, MSc; Katja Harej, BSc; Gregor Polančič, BSc; Boštjan Šumak,

Information System

Laboratory Head:


Database Technologies

Laboratory Head:

Prof. Dr. Tatjana Welzer Družovec

Computer Mediated Communication

Laboratory Head:

Prof. Dr. József Györkös

Real-Time Systems

Laboratory Head:

Prof. Dr. Matjaž Colnarič

Institute of Informatics Head:


Institute of Informatics IN - 3

BSc; Maja Pušnik, BSc; Marko Tekavc, BSc; Luka Pavlič, BSc; Andrej Krajnc, BSc; Kristjan Košič, BSc; Uroš Goljat, Ing.; Miha Strehar; Jernej Novak

COT - Centre of excellence for Advanced Information Technologies and Services


Database Technology Laboratory

Head: Prof. Dr. Tatjana Welzer Družovec

Employees: Asst. Prof. Dr. Boštjan Brumen; Dr. Izidor Golob; Aida Kamišalić, BSc; Marko Hölbl, BSc; Mirjam Bonačić, BSc; Andrej Sevčnikar, BSc; Zoran Kancler, Ing.

Computer Mediated Communication Laboratory

Head: Prof. Dr. József Györkös

Employees: Andrej Bregar, MSc; Boris Lahovnik, BSc

Real-Time Systems Laboratory

Head: Prof. Dr. Matjaž Colnarič

Employees: Asst. Prof. Dr. Domen Verber; Asst. Prof. Dr. Roman Gumzej; Dr. Matej Šprogar; Stanislav Moraus, BSc; Bojan Hadjar, Ing.; Rok Ostrovršnik, BSc

IN - 4 Information Systems Laboratory

INFORMATION SYSTEMS LABORATORY

Head:


Phone: +386 2 220 74 10


RESEARCH PROJECTS


Applied projects

L5 6708-0592-04 Referenčni model za nadaljnje vključevanje e-poslovanja v pravni sistem (Referential model for further integration of e-business into the juridical system)

Participants: Assoc. Prof. Dr. Marjan Heričko; Assoc. Prof. Dr. Branko-Matjaž Jurič; Boštjan Kežmah, MSc; Andrej Krajnc

This interdisciplinary research from the domains of law and informatics is financed by the Faculty of Law. Its goals are to further develop e-business and to increase confidence in it. Some contracts that are made over electronic mail require a third independent party – an e-notary – to ensure proper judical protection. The primary aim of the research is to deal with external operation of jurisdiction and notaries, and with capabilities for composing e-notarial documents and for processing of e-certifications. The research addresses judicially-regulating as well as technological challenges, and lays a foundation for introduce a referential model of the appropriate information architecture enabling efficient design and implementation of IT solutions. On the basis of the unified infrastructure and architecture, high integrability and connectivity will be assured, regardless of the heterogeneity of applied programming tools and platforms. This kind of open architecture, which relies on standards as are XML and web services, is a necessary prerequisite for successful integration into international electronic business structures, such as SEEM (»Single European Electronic Market«).

Information Systems Laboratory IN - 5


KZSEPOebXML Konceptualna zasnova sistema e-poslovanja na osnovi ebXML (Conceptual design of an e-business system based on ebXML)

Leader: Assoc. Prof. Dr. Marjan Heričko (Faculty of Electrical Engineering and Computer Science)

Participants: Assoc. Prof. Dr. Branko-Matjaž Jurič; Asst. Prof. Dr. Aleš Živkovič; Boštjan Kežmah, MSc; Simon Beloglavec; Boštjan Šumak; Maja Pušnik; Andrej Krajnc

Financed by: IRC Celje, d. o. o.

The goal of the project is to research and define architectural and infrastructural models of an integrated e-business system which is accordant with the ebXML (Electronic Business XML) specifications. The project will comprise the development of a standardized model for the creation and storage of selected documents, with regard to the directions of SEEM (Single European Electronic Market), the definition of corresponding vocabularies, schemas and ebXML Core Components, the proposal for operationalization of vocabulary transformation mechanisms, and the definition of transformation templates. A strategy for the establishment of an ebXML Messaging Services based architecture for the interchange of documents, and an ebXML Registry and Repository to locate and access selected ebXML documents, will also be introduced.

Industrial projects

OKTTxml Izobraževanje in svetovanje za potrebe razvoja varnih sodobnih programskih rešitev na osnovi storitveno naravnanih arhitektur, objektno-komponentnih tehnologij in tehnologij XML (Education and consulting for the needs of the development of secure contemporary IT solutions based on service oriented architectures, object and component oriented technologies, and XML technologies)

Leader: Assoc. Prof. Dr. Marjan Heričko (Faculty of Electrical Engineering and Computer Science), Assoc. Prof. Dr. Branko-Matjaž Jurič (Faculty of Electrical Engineering and Computer Science)

Participants: Asst. Prof. Dr. Aleš Živkovič; Boštjan Kežmah, MSc; Simon Beloglavec; Maja Pušnik; Boštjan Šumak; Marko Tekavc; Miha Strehar; Andrej Krajnc



The aim of the project is to offer an educational and consultation program for the needs of the development of secure contemporary IT solutions. The program is related to the domains of service-oriented architectures, object and component oriented technologies, and XML technologies, with a special emphasis on transformations of XML documents, security of networks and information systems, contemporary architectures, UML modelling, software development processes, design patterns, agile methods, and the Java platform.

OSPRVIS Oblikovanje standardnih postopkov razvoja vojaških informacijskih sistemov (The Definition of Standard Procedures for the Development of Military Information Systems)

Leader: Asst. Prof. Dr. Aleš Živkovič (Faculty of Electrical Engineering and Computer Science)

Participants: Assoc. Prof. Dr. Marjan Heričko; Boštjan Kežmah, MSc; Kristjan Košič; Maja Pušnik; Boštjan Šumak

Project partners: Gaudeamus, izobraževanje, svetovanje, poslovne in informacijske storitve Simon Vrečar s.p., ENTER, poslovno svetovanje, Tilen Živan Škraba s.p., eCTRL, INFORMACIJSKE TEHNOLOGIJE, d.o.o.


The project starting point is the specifics of the command and control information systems. The systems do not depend only on the primary user - Slovenian army - but are also integrated into the entire structure of the NATO force. Therefore, the high level of interoperability is already required at the beginning of the development process. The selection of appropriate development methods plays the important role in this process. The project aim is to develop a custom development process model that will enable strictly-controlled development, management and monitoring of the military IS projects. The process model will be based on best practices of conventional as well as agile methods. The integrated decision support model will help to decide which process model is the best choice for the selected project.


CROmEU CROMEU, Know-how Transfer and Capacity Building for participation in EU Community Programmes in Croatia by using Certified EU Project Manager Skills Scheme

Leader: Asst. Prof. Dr. Romana Vajde Horvat (Faculty of Electrical Engineering and Computer Science)


Participants: Dr. Tomislav Rozman; Gregor Polančič; Katja Harej; Katja Kous

The main goal of the international project CROmEU is to improve the knowledge and conditions for cooperation in European projecs for the research and industry sphere in Croatia.

Within the EU, and under the Leonardo da Vinci program a job certification scheme for a variety of jobs, required directly by companies on the European market, is being established. The scheme is called EQN (European Qualification Scheme). For each job the training and certification materials and rules have been established. Currently a scheme has been established for 16 jobs, such as European project management, innovation management, security management of IT systems, configuration management, risk management, etc. Over 6000 certificates have already been granted. The university of Maribor has cooperated in the development of a job scheme for EU project managers (www.manageur.com). The scheme will be transferred to Croatia within the CROmEU project.

BI-FI/04-05/007 Improvement of the efficiency and integration patterns for the needs of web services and e-business

Leader: Assoc. Prof. Dr. Branko-Matjaž Jurič (Faculty of Electrical Engineering and Computer Science)

Participants: Assoc. Prof. Dr. Marjan Heričko; Prof. Dr. Tatjana Welzer Družovec; Asst. Prof. Dr. Aleš Živkovič; Boštjan Kežmah, MSc; Simon Beloglavec; Boštjan Šumak; Maja Pušnik

The purpose of the project is to improve the efficiency of integration patterns for the needs of developing high quality web services and related information systems for e-business support, primarily for B2B (Business-to-Business) and B2G (Business-to-Government) integration. The project has the following goals:

- identification of bottlenecks and the disadvantages of existing integration patterns related to web services;

- introduction and optimization of solutions to overcome the identified bottlenecks and disadvantages;

- proof of improved efficiency by providing pilot models of e-business applications, which are exposed to measurements based on quantitative metrics defined within the model for the evaluation of distributed architectural efficiency;

- identification of improvements and best practices, and modification of integration patterns, with the aim of enhancing the efficiency of e-business applications through the use of web services;

- definition of procedures to apply integration patterns to information systems of mainly small and medium sized enterprises (SME)


UOOMPOOnetPP Application of OO Metrics to Estimate .NET Project Software Size


Participants: Asst. Prof. Dr. Aleš Živkovič Project partners: Eötvös Loránd University, Faculty of Informatics

The focus of this project would be a practical application of metrics suitable for object, component and aspect -oriented development in specifics target environment, namely Microsoft .NET. The concrete environment is needed to build a bridge between two metric groups - source code metrics on one side and high level project metrics on the other side. Within the project of a subgroup of source code metrics that has the greatest impact and higher correlation coefficient with high level metrics for estimating project size will be defined collected and tested to formally prove their importance. In a more general sense, the project will define a framework for a software metrics plan that can be used within software companies and further applied on .NET environment. The framework itself will focus on specific metrics used within software projects to estimate project size. However, the results and the framework itself are expected to be applicable to other metrics families, as well. For the practical part of the project conceptual definition of architecture will be established that will enable the end user to easily compose a tool for metrics gathering and analysis in .NET environment. The analysis will be founded on UML models composed in Visio. The UML models will then be used to calculate project size in function points. The correctness of results will be statistically proven using actual hours; further on correlation between function points and selected source-code metrics for .NET environment will be investigated.


Industrial project

ROUSAVS Raziskava o uporabi storitvenih arhitektur v Sloveniji (Survey on the SOA Usage in Slovenia)


Participants: Assoc. Prof. Dr. Branko-Matjaž Jurič; Boštjan Šumak; Andrej Krajnc Project partners: Oracle Software d.o.o.

Duration: Jan. to Apr. 2006

Following the initiative from Oracle Slovenia, the Institute of Informatics did a research survey on the usage of SOA in Slovenia. In the survey IT solution providers and medium and large


enterprises with their own IT departments were included. The expectations and objectives of Slovenian enterprises related to the introduction of SOA were gathered, and the major risk factors and planned activities for SOA introduction were identified. The survey revealed key business and technology expectations towards SOA and gave insight into the usage of technologies and software platforms.

The general conclusion of the survey is that SOA has outgrown the limits of IT departments and is seen as an important approach for improving the efficiency and competitive positions of the companies.

UPJEE Uporaba plaforme Java EE (The Practical Use of Java EE Platform)


Participants: Assoc. Prof. Dr. Branko-Matjaž Jurič; Luka Pavlič; Marko Tekavc

Financed by: HERMES SoftLab

Duration: June to Oct. 2006

In the scope of the project, knowledge transfer between the partners was established in the forms of workshops and consultancy about the practical use of advanced server side Java technologies, as well as good design practices/patterns, that should be applied when designing advanced information solutions using Java EE, portal servers and Web 2.0.

ISECE Interoperabilnost sistemov elektronskega cestninjenja v Evropi (Interoperability of the European Tolling Systems)

Leader: Prof. Dr. Ivan Rozman (Faculty of Electrical Engineering and Computer Science)

Participants: Assoc. Prof. Dr. Marjan Heričko; Asst. Prof. Dr. Aleš Živkovič

Financed by: Razvojni center IRC Celje, d. o. o., Slovenia

Duration: Jan. to June 2006

The project included the preparation, coordination and execution of activities for developing interoperable electronic toll collection architecture that could be implemented in Europe. The project continued the eToll Collection project that resulted in the working prototype of the complete satellite based free flow system. The prototype was tested on all highways in Slovenia. The project resulted is one possible architectural solution that enables interoperability of all existing and new tolling systems in Europe according to EG9 directions.


PISZVSASOA Prenova IS z vpeljavo storitvene arhitekture SOA (Introducing SOA for IS renovation)

Participants: Assoc. Prof. Dr. Branko-Matjaž Jurič; Assoc. Prof. Dr. Marjan Heričko

Financed by: FJA Oda Team

Duration: June to Sept. 2006

Within the scope of the project, knowledge transfer related to SOA was carried out. Best practices and approaches were identified and consulting activities were performed relating to the reengineering of applications in the Symass II information system.

VSTPZPOIS Vzpostavitev slovenske tehnološke platforme za programsko opremo in storitve (Slovenian Technological Platform for Software and Services)


Participants: Asst. Prof. Dr. Aleš Živkovič; Boštjan Kežmah, MSc; Assoc. Prof. Dr. Branko-Matjaž Jurič; Asst. Prof. Dr. Vili Podgorelec; Maja Pušnik; Boštjan Šumak; Regina Polutnik, MSc; Uroš Goljat; Andrej Krajnc

Financed by: Ministry of Education and Sport

Duration: Jan. to Oct. 2006

In the year 2006 the activities for setting-up a Slovenian Technology Platform for Software and Services were started. The first version of the national Strategic Research Agenda was prepared, platform web portal developed and set-up, first platform’s conference with international participation organized and established relationship to the European platform for software and services named NESSI. Beside many activities on the European, as well as the Slovenian level, took place in order to disseminate and promote the ideas and vision of the platform.


NPR_PB_IPzPnNMpPOT

Nadgradnja programske rešitve, podatkovnih baz in izmenjav podatkov za pripravo na nove mehanizme pri popolnem odprtju trga (Upgrade of programs, databases and data exchanges for preparation for new mechanisms for total opening of the market)


Participants: Boštjan Kežmah, MSc; Uroš Goljat; Jernej Novak; Andrej Krajnc

Duration: Sept. to Dec. 2006

This three-month project involved an upgrade a program solution for the Energy Agency of the Republic of Slovenia to support new types of reporting and new channels for the electronic delivery of reports and, at the same time, to upgrade underlying technologies to the .NET 2.0 Framework and MS SQL Server 2005.


ManagerEUr ManagerEUr - Certified EU project manager

Participants: Prof. Dr. Ivan Rozman; Asst. Prof. Dr. Romana Vajde Horvat; Katja Harej; Gregor Polančič; Dr. Tomislav Rozman; Regina Polutnik, MSc

Duration: Nov. 2003 to Oct. 2006

The project aimed at developing a European skill card for a certified EU project manager. This skill card will be made available through an up-to-date solution (MM 1032 multimedia project CREDIT, 1998 – 2001), which offers an online system for browsing the skills card, performing self-assessment online, collecting evidence, and receiving a formal assessment of the evidence online. A skills gaps profile will show which course modules the student would still have to attend to manage the accreditation as a certified EU project manager. The project will develop the courses, the skills card, and configure the accreditation system for online services.

PUBLICATIONS

Simon Beloglavec, Marjan Heričko, “Identifikacija ustreznih realizacij načrtovalskih vzorcev,” Electrotechnical Review, Vol. 73, No. 1, pp. 71-76, 2006.


Andrej Bregar, Matjaž B. Jurič, “Pomen odločitvenih modelov za pogajanja v e-poslovanju,” Uporab. inform. (Ljubl.), Vol. 14, No. 3, pp. 134-141, Jul., Aug., Sep. 2006.

Marjan Heričko, Ivan Rozman, Aleš Živkovič, “A formal representation of functional size measurement methods,” J. syst. softw., Vol. 79, Iss. 9, pp. 1341-1358, 2006.

Matjaž B. Jurič, Ivan Rozman, Boštjan Brumen, Matjaž Colnarič, Marjan Heričko, “Comparison of performance of Web services, WS-security, RMI, and RMI-SSL,” J. syst. softw., Vol. 79, pp. 689-700, 2006.

Marjan Krašna, Andrej Jakl, Darko Goričanec, Ivan Rozman, “Optimization of energy distribution: a software approach,” WSEAS transactions on fluid mechanics, Vol. 1, Iss. 6, pp. 607-614, Jun. 2006.

Ivan Rozman, Matjaž B. Jurič, Izidor Golob, Marjan Heričko, “Qualitative and quantitative analysis and comparison of Java distributed architectures,” Softw. pract. exp., Vol. 36, Iss. 14, pp. 1543-1562, 2006.

Marko Tekavc, Matjaž B. Jurič, “Izkušnje pri načrtovanju in razvoju storitvene arhitekture,” Uporab. inform. (Ljubl.), Vol. 14, no. 2, pp. 86-90, Apr., May, Jun. 2006.

Luka Pavlič, Vili Podgorelec, Marjan Heričko, “Učinkovitejša uporaba znanja,” Moj mikro (Slov. izd.), Vol. 22, no. 9, pp. 9-10, Sep. 2006.

Ambrož Stropnik, Vasilije Vasić, Vili Podgorelec, “Potencial tehnologij semantičnega spleta v industrijskem podjetju,” Inf. bilt. - Gorenje, Vol.15, No. 7-8, pp. 1-12, Jul.-Aug. 2006.

Boštjan Kežmah, “Praktični prikaz aktualne prakse na področju varnosti informacijskih sistemov,” Informatika in pravo: zbornik vabljenih predavanj druge konference, Maribor, Slovenia, 2006, pp. 62-68.

Luka Pavlič, Vili Podgorelec, “Predstavitev in uporaba tehnologij semantičnega spleta na področju prava,” Informatika in pravo: zbornik vabljenih predavanj druge konference, Maribor, Slovenia, 2006, pp. 79-90.

Gregor Polančič, “Uporaba odprtega programja v sodobnih pisarnah,” Informatika in pravo: zbornik vabljenih predavanj druge konference, Maribor, Slovenia, 2006, pp. 91-101.

Andrej Bregar, Matjaž B. Jurič, “Pomen odločitvenih modelov za avtomatizirana pogajanja v e-poslovanju,” V partnerstvu z informatiko do poslovne odličnosti: zbornik posvetovanja, Dnevi slovenske informatike, Portorož, Slovenia, Apr. 2006.


Marko Hölbl, Marjan Heričko, Tatjana Welzer-Družovec, “Enhanncements of P3P,” Zbornik 9. mednarodne multikonference Informacijska družba IS 2006, Oct. 2006, pp. 298-301.

Marko Hölbl, Marjan Heričko, Tatjana Welzer-Družovec, “Platforma za zagotavljanje zasebnosti,” V partnerstvu z informatiko do poslovne odličnosti: zbornik posvetovanja, Dnevi slovenske informatike, Portorož, Slovenia, Apr. 2006.

Matjaž B. Jurič, “Procesi, BPEL in interakcija z uporabniki,” Sodobne tehnologije in storitve: OTS'2006, zbornik enajste konference, Maribor, Slovenia, Jun. 2006, pp. 8-13.

Andrej Krajnc, Marjan Heričko, “Uporaba potrditvenih sistemov pri razvoju aplikacij,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 7-10.

Marjan Krašna, Andrej Jakl, Darko Goričanec, Ivan Rozman, “Information system for energy distribution optimization,” Proceedings of the IASME/WSEAS international conferences, Elounda, Agios Nikolaos, Kreta, Greece, Aug. 2006.

Luka Pavlič, “Grafični prikaz prevoženih poti v sistemu e-cestninjenja,” Sodobne tehnologije in storitve: OTS'2006, zbornik enajste konference, Maribor, Slovenia, Jun. 2006, pp. 103-110.

Luka Pavlič, Vili Podgorelec, Marjan Heričko, “Prototipna informacijska rešitev na osnovi semantičnega spleta,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 59-62.

Vili Podgorelec, “Izboljšanje klasifikacije podatkov z izločanjem netipičnih primerkov,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 121-124.

Vili Podgorelec, Luka Pavlič, “Networked knowledge: stimulating creativity by collaboration,” Zbornik 9. mednarodne multikonference Informacijska družba IS 2006, Oct. 2006, pp. 285-289.

Vili Podgorelec, Luka Pavlič, Marjan Heričko, “Nepostopkovno sklepanje v aplikaciji semantičnega spleta,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 55-58.

Vili Podgorelec, Luka Pavlič, Marjan Heričko, “Using semantic web technologies for project team building,” KMO'2006: knowledge management in organizations: proceedings of the First International Conference for New Trends in Knowledge Management, Maribor, Slovenia, Jun. 2006, pp. 27-32.


Gregor Polančič, “Študija izvedbe fokusne skupine v spletnem prostoru,” Zbornik 9. mednarodne multikonference Informacijska družba IS 2006, Oct. 2006, pp. 310-313.

Gregor Polančič, “Vzpostavitev osnov za razumevanje sprejetosti in učinkovitosti programskih orodij,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 11-14.

Gregor Polančič, Romana Vajde Horvat, “Towards an integrated acceptance model for software frameworks - literature review and proposed solution,” 28th International Conference on Information Technology Interfaces, Cavtat/Dubrovnik, Croatia, Jun. 2006, pp. 153-158.

Maja Pušnik, Boštjan Šumak, Matjaž B. Jurič, Marjan Heričko, “Influence of the capability maturity model on the integrability index,” Zbornik 9. mednarodne multikonference Informacijska družba IS 2006, Oct. 2006, pp. 314-317.

Tomislav Rozman, Romana Vajde Horvat, “Case study of the suitability of the process modelling methodology in a team,” 28th International Conference on Information Technology Interfaces, Cavtat/Dubrovnik, Croatia, Jun. 2006, pp. 103-108.

Tomislav Rozman, Romana Vajde Horvat, Ivan Rozman, “Proposal of BPMN extensions based on results of ontological analyses of process modelling methods,” KMO'2006: knowledge management in organizations: proceedings of the First International Conference for New Trends in Knowledge Management, Maribor, Slovenia, Jun. 2006, pp. 114-119.

Gregor Štiglic, Matej Mertik, Vili Podgorelec, Peter Kokol, “Using visual interpretation of small ensembles in microarray analysis,” Nineenth IEEE symposium on computer-based medical systems [also] CBMS 2006, Salt Lake City, Utah, USA, Jun. 2006, pp. 691-695.

Boštjan Šumak, Maya Pušnik, “Napredna obdelava podatkov XML v podatkovnih bazah,” Sodobne tehnologije in storitve: OTS'2006, zbornik enajste konference, Maribor, Slovenia, Jun. 2006, pp. 84-93.

Tomaž Taks, Gregor Polančič, “Zakaj in kako izbrati programsko ogrodje,” Sodobne tehnologije in storitve: OTS'2006, zbornik enajste konference, Maribor, Slovenia, Jun. 2006, pp. 61-69.

Marko Tekavc, Marjan Heričko, “Analiza uporabnosti metrik pri preoblikovanju,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 39-42.


Marko Tekavc, Matjaž B. Jurič, “Izkušnje pri načrtovanju in razvoju storitvene arhitekture,” V partnerstvu z informatiko do poslovne odličnosti: zbornik posvetovanja, Dnevi slovenske informatike, Portorož, Slovenia, Apr. 2006.

Romana Vajde Horvat, Katja Harej, Tomislav Rozman, “Skill card and certification system for certified EU project manager,” 28th International Conference on Information Technology Interfaces, Cavtat/Dubrovnik, Croatia, Jun. 2006, pp. 425-430.

Aleš Živkovič, Marjan Heričko, Uroš Goljat, Zoltán Porkoláb, “Improving size estimates with .NET product metrics,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 35-38.

Aleš Živkovič, Marjan Heričko, Ivan Vezočnik, “Practical experiences of implementing a satellite-based tolling system for Slovenia,” 14. mednarodni simpozij o elektroniki v prometu, Ljubljana, Slovenia, Apr. 2006, C4.

Matjaž B. Jurič, Matej Rus, Miroslav Rebernik, Ivan Rozman, “Establishment of science park and other spin-off mechanisms at the University of Maribor, Slovenia,” Science policy and human resources development in South-Eastern Europe in the context of European integration, Vienna, Austria, 2006, pp. 149-156.

Matjaž B. Jurič, Benny Mathew, Poornachandra G. Sarang, Business process execution language for web services: an architect and developer's guide to orchestrating web services using BPEL4WS, Birmingham, UK, Packt Publishing, 2006.


Boštjan Kežmah: “New, Better World of User Interfaces,” the talk involved presentation of novelties in the new Microsoft technology – Windows Presentation Foundation (WPF) with emphasis on cooperation of developer and designer, Portorož, Slovenia, May 23, 2006.

Boštjan Kežmah: “Microsoft Gadgets – New Fashion or Time for Panic?,” the talk involved presentation of novelties in the new Microsoft technology – Microsoft Gadgets with emphasis on practical presentation and applicability evaluation, Portorož, Slovenia, May 25, 2006.


Asst. Prof. Dr. Vili Podgorelec: Programme committee member, international conference, The IASTED International Conference on Sotfware Engineering, Innsbruck, Austria, Feb.


14–16, 2006.

Asst. Prof. Dr. Vili Podgorelec: Programme committee member, international conference, IADIS Virtual Multi Conference on Computer Science and Information Systems 2006, internet, Slovenia, May 15–19, 2006.

Dr. Tomislav Rozman, Gregor Polančič:

Programme committee member, conference, 2006 IRMA international conference, Washington, D.C., United States, May 21–24, 2006.

Dr. Tomislav Rozman: Reviewer, conference, 2006 IRMA international conference, Washington, D.C., United States, May 21–24, 2006.

Assoc. Prof. Dr. Marjan Heričko: Scientific coordinator, conference, Slovenian Technology Platform For Software And Services, Maribor, Slovenia, June 12, 2006.

Asst. Prof. Dr. Aleš Živkovič, Boštjan Kežmah, MSc, Maja Pušnik, Boštjan Šumak, Miha Strehar, Andrej Krajnc, Uroš Goljat, Regina Polutnik, MSc:

Organising committee member, conference, Slovenian Technology Platform For Software And Services, Maribor, Slovenia, June 12, 2006.

Assoc. Prof. Dr. Marjan Heričko, Asst. Prof. Dr. Aleš Živkovič, Asst. Prof. Dr. Vili Podgorelec:

Member of international programme board, international conference, Knowledge Management in Organizations - New Trends in Knowledge Management 2006, Maribor, Slovenia, June 13–14, 2006.

Asst. Prof. Dr. Aleš Živkovič: Organising committee chairman, conference, Eleventh Conference OTS'2006 IS Development - Advanced technologies and services, Maribor, Slovenia, June 13–14, 2006.

Asst. Prof. Dr. Aleš Živkovič: Organising committee chairman, international conference, Knowledge Management in Organizations - New Trends in Knowledge


Management 2006, Maribor, Slovenia, June 13–14, 2006.

Boštjan Šumak, Maja Pušnik, Regina Polutnik, MSc, Miha Strehar, Marko Tekavc, Luka Pavlič, Andrej Krajnc, Uroš Goljat:

Organising committee member, conference, Eleventh Conference OTS'2006 IS Development - Advanced technologies and services, Maribor, Slovenia, June 13–14, 2006.

Boštjan Kežmah, MSc, Maja Pušnik, Uroš Goljat, Miha Strehar, Andrej Krajnc:

Organising committee member, conference, Information science and law, Maribor, Slovenia, June 13–14, 2006.

Assoc. Prof. Dr. Marjan Heričko, Boštjan Šumak, Maja Pušnik, Miha Strehar, Marko Tekavc, Luka Pavlič, Andrej Krajnc, Uroš Goljat, Regina Polutnik, MSc:

Organising committee member, international conference, Knowledge Management in Organizations - New Trends in Knowledge Management 2006, Maribor, Slovenia, June 13–14, 2006.

Asst. Prof. Dr. Aleš Živkovič, Assoc. Prof. Dr. Marjan Heričko:

Proceedings editor, conference, Eleventh Conference OTS'2006 IS Development - Advanced technologies and services, Maribor, Slovenia, June 13–14, 2006.

Assoc. Prof. Dr. Marjan Heričko, Asst. Prof. Dr. Aleš Živkovič:

Proceedings editor, international conference, Knowledge Management in Organizations - New Trends in Knowledge Management 2006, Maribor, Slovenia, June 13–14, 2006.

Assoc. Prof. Dr. Marjan Heričko: Programme committee chairman, conference, Eleventh Conference OTS'2006 IS Development - Advanced technologies and services, Maribor, Slovenia, June 13–14, 2006.


Boštjan Kežmah, MSc: Programme committee chairman, conference, Information science and law, Maribor, Slovenia, June 13–14, 2006.

Boštjan Kežmah, MSc, Assoc. Prof. Dr. Branko-Matjaž Jurič, Prof. Dr. Ivan Rozman:

Programme committee member, conference, Eleventh Conference OTS'2006 IS Development - Advanced technologies and services, Maribor, Slovenia, June 13–14, 2006.

Asst. Prof. Dr. Aleš Živkovič, Assoc. Prof. Dr. Marjan Heričko:

Programme committee member, conference, Information science and law, Maribor, Slovenia, June 13–14, 2006.

Katja Harej, Dr. Tomislav Rozman:

Member of international programme board, international conference, 6th IBIMA Conference Managing Information in Digital Economy, Bonn, Germany, June 19–21, 2006.

Dr. Tomislav Rozman, Katja Harej:

Reviewer, international conference, 6th IBIMA Conference Managing Information in Digital Economy, Bonn, Germany, June 19–21, 2006.

Asst. Prof. Dr. Vili Podgorelec: Member of steering committee, international symposium, The 19th IEEE International Symposium on Computer-Based Medical Systems, Salt Lake City, United States, June 22–23, 2006.

Asst. Prof. Dr. Vili Podgorelec: Programme committee member, international symposium, The 19th IEEE International Symposium on Computer-Based Medical Systems, Salt Lake City, United States, June 22–23, 2006.

Gregor Polančič: Reviewer, conference, The 10th World Multi-Conference on Systemics, Cybernetics and Informatics,WMSCI 2006, Orlando, Florida, USA, July 16-19, 2006.

Asst. Prof. Dr. Aleš Živkovič: Member of international programme board, conference, Collaboration and Information Society,


Ljubljana, Slovenia, Oct. 9–13, 2006.

Assoc. Prof. Dr. Marjan Heričko: Programme committee chairman, conference, Collaboration and Information Society, Ljubljana, Slovenia, Oct. 9–13, 2006.

Assoc. Prof. Dr. Marjan Heričko, Prof. Dr. Ivan Rozman:

Member of international programme board, international conference, Information society 2006, Ljubljana, Slovenia, Oct. 9–14, 2006.

Asst. Prof. Dr. Romana Vajde Horvat: Organising committee chairman, expert consultation, Dan standardizacije (Standardi: velike koristi za majhna podjetja), Maribor, Slovenia, Oct. 13, 2006.

Dr. Tomislav Rozman, Gregor Polančič, Katja Kous:

Organising committee member, expert consultation, Dan standardizacije (Standardi: velike koristi za majhna podjetja), Maribor, Slovenia, Oct. 13, 2006.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Programme committee chairman, arrangement, Hevreka!06, Ljubljana, Slovenia, Oct. 24–26, 2006.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for Information and Software Technology Journal.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for Performance Evaluation Journal.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for International Journal of Distance Education Technologies.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for John Wiley & Sons, Ltd.

Assoc. Prof. Dr. Marjan Heričko: Reviewer for Uporabna informatika.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for Journal of Systems and Software.

Prof. Dr. Ivan Rozman: Reviewer for Uporabna informatika.

Assoc. Prof. Dr. Marjan Heričko, Assoc. Prof. Dr. Branko-Matjaž Jurič:

Reviewer for Organizacija – revija za management, informatiko in kadre.

Assoc. Prof. Dr. Branko-Matjaž Jurič: Reviewer for Journal of Systemics, Cybernetics and


Informatics.

Assoc. Prof. Dr. Marjan Heričko: Reviewer for Concurrency and Computation: Practice and Experience.

Asst. Prof. Dr. Vili Podgorelec: Reviewer for IEEE Transactions on Information Technology in Biomedicine.

Asst. Prof. Dr. Aleš Živkovič: Reviewer for International Journal of Web Engineering and Technology - online.

Asst. Prof. Dr. Aleš Živkovič: Reviewer for International Journal of Web Engineering and Technology - print.


Asst. Prof. Dr. Aleš Živkovič: Scientific collaboration, scientific collaboration, Budapest, Hungary, Apr. 2–9, 2006.

Assoc. Prof. Dr. Marjan Heričko: Scientific collaboration, visit, Budapest, Hungary, Apr. 2 to May 2, 2006.

Assoc. Prof. Dr. Marjan Heričko: Lecture "The role of measurments and metrics in software development", visit, Budapest, Hungary, Apr. 20, 2006.

Assoc. Prof. Dr. Marjan Heričko: Participant in the general meeting of the European platform NESSI (Network European Software & Services Initiative), meeting participation, Brusell, Belgium, June 8, 2006.

Assoc. Prof. Dr. Marjan Heričko: Participant at the conference NESSI Forum, meeting participation, Brusell, Belgium, June 8, 2006.

Assoc. Prof. Dr. Marjan Heričko: Scientific collaboration, visit, Vaasa, Finland, Aug. 14–24, 2006.

Assoc. Prof. Dr. Marjan Heričko: Representative of Slovenia at the NESSI MSC (Member States Committee) Meeting, project meeting, Barcelona, Spain, Oct. 27, 2006.


GUESTS AND VISITORS

Lorna Uden (University of Staffordshire, Staffordshire, United Kingdom):

Scientific collaboration, scientific collaboration, Mar. 5–11, 2006.

Kimmo Salmenjoki (University of Vaasa, Vaasa, Finland):

Scientific collaboration, scientific collaboration, June 3–16, 2006.

Jesus Villasante (EC Information Society and Media MG, Brusell, Belgium):

Invited lecture at the first Slovenian Technology Platform for Software and Services conference, visit, June 12, 2006.

Jose M. Cavanillas (Atos Origin, Madrid, Spain):

Invited lecture on conferences KMO'2006 and OTS'2006, visit, June 13, 2006.

Michael Roe (Microsoft Research, Cambridge, United Kingdom):

Invited lecture on conferences KMO'2006, OTS'2006 and INPRO'2006, visit, June 13, 2006.

Ernesto Damiani (University of Milan, Milan, Italy):

Invited lecture on conferences KMO'2006 and OTS'2006, visit, June 14, 2006.

Lorna Uden (University of Staffordshire, Staffordshire, United Kingdom):

Invited lecture on the conference KMO'2006, visit, June 14, 2006.

Zoltán Porkoläb (Eötvös Loránd University, Faculty of Informatics, Budapest, Hungary):

Scientific collaboration, scientific collaboration, June 19–28, 2006.

Viktória Zsók (Eötvös Loránd University, Faculty of Informatics, Budapest, Hungary):

Scientific collaboration, visit, Aug. 12–20, 2006.


Scientific collaboration, scientific collaboration, Oct. 8–16, 2006.


Assoc. Prof. Dr. Marjan Heričko: Faculty of Electrical Engineering and Computer Science


recognition for exceptional cooperation with Slovenian industry in the field of information technology, Maribor, Slovenia, Dec. 14, 2006.

Database Technologies Laboratory IN - 23

DATABASE TECHNOLOGIES LABORATORY

Head:


Phone: +386 2 235 51 30


RESEARCH PROJECTS


Applied projects

IPPM Izobraževanje in svetovanje za področje podatkovnega modeliranja (Training and consulting for the field of data modelling)

Leader: Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science)

Participants: Marko Hölbl, Aida Kamišalić, Asst. Prof. Dr. Boštjan Brumen, Dr. Izidor Golob

Project partners: SRC.SI d.o.o.

Financed by: SRC.SI, d. o. o.

The project includes training and consultation in the field a data modelling; from requests to a conceptual model and from the conceptual model to analytical systems, including consulting from mentioned areas.


NCeVZiR Načrtovanje integracije podatkovnih baz zaščite in reševanja (Integration design for databases related to protection against natural and other disasters)

Leader: Dr. Izidor Golob (Faculty of Electrical Engineering and Computer Science)

IN - 24 Database Technologies Laboratory

Participants: Prof. Dr. Tatjana Welzer Družovec, Mirjam Bonačič

Financed by: Viris, d. o. o.

The preparation of an information system, as well as in the usage of plans for natural and other disasters and their preparation, has shown, that the system should not only be uniforme, but it also has to be established, in such a way that it would be possible to optimize and integrate currentlly separated processes for collection, storing, aggregation and updating. The result of the project is a conceptual (entitety-relational) model and an integrated plan for collection, aggregation and updating.

Industrial projects

EIM Spletne strani EIM (EIM web pages)


Participants: Katja Udir-Mišič, MSc; Zoran Kancler, Dr. Izidor Golob, Dr. Marko Ivanišin

Project partners: Economic Insttitute Maribor Ltd.

Financed by: Economic Insttitute Maribor Ltd.

The project includes analysis of customer requests, the preparation of a proposed solution, the realization of a chosen solution and user training.

VzpostTehPlat Vzpostavitev tehnološke platforme "Mediji v e-omrežjih" (Establishment of technological platform »E-network media«)


Participants: Prof. Dr. Tatjana Welzer Družovec


We cooperated in the establishment of the technological platform »Media in e-networks« (a national mirror of the European "NEM" platform) and have prepared a strategic research agenda of a technological platform.







Financed by: Slovenian Research Agency – project PROTEUS

The objective of the project is to contribute to the integration of developed data mining techniques into information and telecommunication systems. It will broaden the understanding of data mining and its implications to various fields, such as data security and quality. The aim is to promote sharing and dissemination of information and state-of-the-art on current data mining and knowledge discovery methods, and to use a new processing and storage paradigm to support data and processing intensive processes. The goal is to incorporate the research results into daily usage.

In the field of automatic multimedia content analysis the main research work will be focused on automatic segmentation of an audio signal, analysis of language dependencies of applied methods and evaluation of their accuracy.

For indexing the audio files we will also use the text mining techniques based on the Porters filtering method and machine learning algorithms appropriate for the text mining like support vector machines, Bayesian methods and neural networks. All those are incorporated in the Multimetod environment developed at FERI.

BI-FI/04-05-007 Improvement of the efficiency and integration patterns for the needs of web services and e-business

Leader: Assoc. Prof. Dr. Branko-Matjaž Jurič (Faculty of Electrical Engineering and Computer Science)

Participants: Boštjan Kežmah, MSc; Maja Pušnik; Assoc. Prof. Dr. Marjan Heričko; Boštjan Šumak; Simon Beloglavec; Aleš Živkovič, MSc; Prof. Dr. Tatjana Welzer Družovec

The purpose of the project is to improve the efficiency of integration patterns for the needs of developing high quality web services and related information systems for e-business support, primarily for B2B (Business-to-Business) and B2G (Business-to-Government) integration. The project has the following goals:


- identification of bottlenecks and disadvantages of existing integration patterns related to web services;

- introduction and optimization of solutions to overcome the identified bottlenecks and disadvantages;

- proof of improved efficiency by providing pilot models of e-business applications, which are exposed to measurements based on quantitative metrics defined within the model for the evaluation of distributed architectural efficiency;

- identification of improvements and best practices, and modification of integration patterns, with the aim of enhancing the efficiency of e-business applications through the use of web services;

- definition of procedures to apply integration patterns to information systems of mainly small and medium sized enterprises (SME)

IDMTiIS Integration of Data Mining Techniques into Intelligent Systems

Leader: Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science), Apostolos Papadopoulos (Aristotle University of Thessaloniki, Department of Informatics)

Participants: Dr. Izidor Golob, Alexandros Nanopoulos, Yannis Manolopoulo, Aida Kamišalić, Asst. Prof. Dr. Boštjan Brumen, Apostolos Papadopoulos

Project partners: Aristotle University of Thessaloniki, Department of Informatics

Financed by: Goverment of Greece, Slovenian Research Agency

Data mining is an interdisciplinary research area. The results of data mining find a variety of applications, for instance: in bioinformatics, economy, software engineering, etc. The creation of an intelligent environment poses several challenges, many of which can be solved using intelligent data analysis into organizational, business and industrial processes. Automated programs for learning are needed for the machines to become easy-to-use instruments of daily life. Information handling must move from today’s data-storage perspective to future data analysis perspective. The challenge is to integrate data mining into database management systems and use it as a unit in the knowledge management systems. The objective of the project is to contribute to integration of the developed data mining techniques into intelligent systems.

The aim is to promote sharing and dissemination of information and state-of-the-art on current data mining and knowledge discovery methods, and to use new processing and storage paradigm to support data and processing intensive process. The goal is to incorporate the research results into the daily usage.


DAMAS Data Mining - Its Assessment and Security

Leader: Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science), Hannu Jaakkola (Tampere University of Technology)

Participants: Marko Hölbl, Asst. Prof. Dr. Boštjan Brumen Project partners: Tampere University of Technology

Financed by: Finish Academy, Slovenian Research Agency

Data mining is an interdisciplinary research area; the techniques are highly relevant for research in other scientific fields such as Bioinformatics, Economy, Software Engineering, and alike. Domain knowledge available in those disciplines can improve Data Mining applications.

The creation of intelligent environment poses many challenges, many of which can be solved using intelligent data analysis into organizational, business and industrial processes. Automated programs regarding learning are needed for machines to become easy-to-use instruments of daily life. Information handling must move from today’s data-storage perspective to future data analysis perspective. The challenge is to integrate data mining into database management systems and use them as a unit in knowledge management systems.

Within the project, we research:

• assessment of machine learning algorithms

• identification of security issues in data mining

• data mining and software quality control.


Industrial project

SvetZasnELES Svetovanje pri zasnovi in razvoju podatkovnega modela podatkovnega skladišča in sistema OLAP za PIS ELES (Consulting for design and development of the data warehouse and OLAP systems for ELES business information system)


Participants: Prof. Dr. Tatjana Welzer Družovec, Asst. Prof. Dr. Boštjan Brumen

Financed by: ELES Slovenia


Duration: Sept. to Dec. 2006

The project was focused on the consultancy and development of certain phases of a data model for a data warehouse, for the buisness information system.


BI-CZ Data Mining Methods and Their Application II

Leader: Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science), Jiři Kubalík (Czech Technical University Prague)

Participants: Lenka Nováková, Filip Zelezny, Asst. Prof. Dr. Boštjan Brumen, Vaclav Chudacek, Jan Macek, Dr. Izidor Golob, Asst. Prof. Dr. Vili Podgorelec, Aida Kamišalić

Project partners: Czech Technical University Prague

Financed by: Slovenian Research Agency, Czech Ministry of Education, Youth and Sport


Knowledge Discovery or Data Mining is the partially automated process of extracting patterns from databases. It has proven to be a promising approach for enhancing the intelligence of systems and services. We see a prosperous and still growing research field with important commercial applications. The link between machine learning, statistics and database technology leads to increasing cross-fertilization and sophistication in data analysis.

GRID technology is a new emerging computation paradigm that combines distributed computers to solve time-consuming problems using idle computing cycles. GRID computing has emerged as an important new field, distinguished from conventional distributed computing by its focus on large-scale inter-organizational resource sharing, innovative applications, and high-performance orientation. The most important impact GRID systems can have on data mining is the potential to solve computationally and data intensive problems. Because of the new paradigm, the already solved problems needed to be re-addressed in the light of new architecture and new requirements.

The challenge of embedding data mining in organizational, business, industrial processes and other application fields is in line with the creation of an ambient intelligence landscape. In order to move from a task-centered (performance first) to a human-centered (understanding first) vision of information handling, automated programs for learning (Machine Learning) and for data analysis (Data Mining) should become familiar, easy-to-use instruments of everyday life.


Research was based on the experience of both partner teams in machine learning, databases, data warehousing, visualization, and Grid technology.

BI-US/05-06/018 Perceiving And Enacting Social And Political Identities In Slovenia and United States – A view from globalization and European integration perspective


Participants: Asst. Prof. Dr. Marjan Družovec, Dr. Izidor Golob, Asst. Prof. Dr. Boštjan Brumen, Peter Lah, Aida Kamišalić

Project partners: St. Louis University, ZDA



This research project was a study of media impact on societies. It examined societies that are engaged in the process of globalization. The target groups in both countries were university students. The research was focused on possible influences of globalization and European integration (as one of the expressions of globalization) on young people in Slovenia and in the U.S.

The aim of this research was to explore how college students perceive and enact their social and political identities in Slovenia and in the U.S. Against this background question, the role of the media and of the Internet technology was examined.

This research was aimed to bring new knowledge in understanding the process of globalization on Slovenian and the U.S. populations. Our research built new knowledge in a critical theory of globalization. The emergence of transnational public spheres is informative for the practical goals of a critical theory of globalization. Understanding young persons’ new patterns of social and political action is crucial for the success of the project of a democratic, transnational society.

BI-PT/04-05-5 Improving information quality in data warehousing environments

Leader: Prof. Dr. Tatjana Welzer Družovec (Faculty of Electrical Engineering and Computer Science), Orlando Belo (University of Minho)

Participants: Dr. Izidor Golob, Asst. Prof. Dr. Boštjan Brumen, Aida Kamišalić, Paulo Jorge de Sousa Azevedo, Pedro Manuel Rangel Santos Henriques, Anália Maria Garcia Lourenço



Financed by: Slovenian Research Agency, Ministerio da Ciencia e do Ensino superior


This project researched methods and techniques to improve information quality in large data resources, especially data warehouses. Information quality is becoming increasingly important for today's business because of knowledge workers' constantly growing demands for data analysis. The research goals were: to study information quality in a data warehousing environment, to improve information quality and its influence on the business processes, and to develop better populating processes.

PUBLICATIONS

Marko Hölbl, Boštjan Brumen, Tatjana Welzer-Družovec, “Primerjava varnostnih mehanizmov brezžičnih tehnologij Bluetooth in wireless LAN 802.11 WPA,” Uporab. inform. (Ljubl.), Vol. 14, No. 3, pp. 109-122, Jul., Aug., Sep. 2006.


Heinrich Christian Mayr, Klaus-Dieter Schewe, Bernhard Thalheim, Tatjana Welzer-Družovec, “Integration of bargaining into e-business systems,” Informatica (Ljublj.), Vol. 30, No. 3, pp. 335-345, 2006.

Ivan Rozman, Matjaž B. Jurič, Izidor Golob, Marjan Heričko, “Qualitative and quantitative analysis and comparison of Java distributed architectures,” Softw. pract. exp., Vol. 36, Iss. 14, pp. 1543-1562, 2006.

Marko Hölbl, Marjan Heričko, Tatjana Welzer-Družovec, “Enhanncements of P3P,” Zbornik 9. mednarodne multikonference Informacijska družba IS 2006, Oct. 2006, pp. 298-301.

Marko Hölbl, Marjan Heričko, Tatjana Welzer-Družovec, “Platforma za zagotavljanje zasebnosti,” V partnerstvu z informatiko do poslovne odličnosti: zbornik posvetovanja, Dnevi slovenske informatike, Portorož, Slovenia, Apr. 2006.

Marko Hölbl, Tatjana Welzer-Družovec, Boštjan Brumen, “Public key cryptography - an alternative?,” Proceedings of the 15th Electrotechnical and Computer Science Conference ERK 2006, Portorož, Slovenia, Sep. 2006, Vol. B, pp. 15-18.


Aida Kamišalić, Tatjana Welzer-Družovec, “Podatkovni model zdravstvene oskrbe,” V partnerstvu z informatiko do poslovne odličnosti: zbornik posvetovanja, Dnevi slovenske informatike, Portorož, Slovenia, Apr. 2006.

Matjaž Planinšič, Izidor Golob, Tatjana Welzer-Družovec, “Konceptualno načrtovanje področnega skladišča,” V partnerstvu z informatiko do poslovne odličnosti: zbornik posvetovanja, Dnevi slovenske informatike, Portorož, Slovenia, Apr. 2006.

Andrej Sevčnikar, “Implementacija in integracija elektronskega podpisa v spletne aplikacije,” Sodobne tehnologije in storitve: OTS'2006, zbornik enajste konference, Maribor, Slovenia, Jun. 2006, pp. 139-146.

Tatjana Welzer-Družovec, Marjan Družovec, Marko Hölbl, Boštjan Brumen, Aida Kamišalić, Hannu Jaakkola, “Data policy for intelligent systems,” 10th International Conference on Intelligent Engineering Systems, London, UK, Jun. 2006, pp. 213-215.

Tatjana Welzer-Družovec, Izidor Golob, Marjan Družovec, Boštjan Brumen, Suzana Žilič Fišer, David Riaňo, Lenka Lhotska, “Influence of domain knowledge on data quality,” KMO'2006: knowledge management in organizations: proceedings of the First International Conference for New Trends in Knowledge Management, Maribor, Slovenia, Jun. 2006, pp. 177-179.

Tatjana Welzer-Družovec, Peter Kokol, Ana Habjanič, Marjan Družovec, “Teaching IT in the postgraduate health care and nursing program,” Advancing health information management and health informatics: issues, strategies, and tools: proceedings of the eleventh international symposium on health information management research, (iSHIMR 2006), Halifax, Nova Scotia, Canada, Jul. 2006, pp. 128-131.


Tatjana Welzer Družovec: “Data Reusability,” Socrates-Erasmus teaching mobility, Braga, Portugal, May 3, 2006.

Tatjana Welzer Družovec: “Data Quality,” Socrates-Erasmus teaching mobility, Pori, Finland, Sept. 16, 2006.

Tatjana Welzer Družovec: “Legal and Ethical Perspectives,” Socrates-Erasmus teaching mobility, Rovaniemi, Finland, Sept. 20, 2006.

Marko Hölbl: “Security of Dedicated Hash Functions,” socrates-Erasmus teaching mobility, Tarragona, Spain, Sept. 26, 2006.


Izidor Golob: “Knowledge is cool,” invited speech at the conference aimed at promotion of science, Maribor, Slovenia, Dec. 18, 2006.


Prof. Dr. Tatjana Welzer Družovec, Dr. Izidor Golob:

Member of international programme board, international conference, Knowledge Management in Organizations - New Trends in Knowledge Management 2006, Maribor, Slovenia, June 13–14, 2006.

Dr. Izidor Golob, Asst. Prof. Dr. Boštjan Brumen:

Reviewer, member of expert committee for evaluation of technological and business aspects, arrangement, Hevreka!06, Ljubljana, Slovenia, Oct. 24–26, 2006.

Prof. Dr. Tatjana Welzer Družovec, Zoran Kancler, Marko Hölbl:

Bologna process- ECTS, workshop, organisation and implementation, Maribor, Slovenia, Nov. 30, 2006.

Prof. Dr. Tatjana Welzer Družovec: Bologna process and me, workshop, co-Ordinated organisation and implementation, Ljubljana, Slovenia, Oct. 25, 2006.

Prof. Dr. Tatjana Welzer Družovec, Dr. Izidor Golob:

13th Conference Days of Slovenian Informatics 2006, conference, co-organisation and implementation, Portorož, Slovenia, Apr. 19–21, 2006.

Prof. Dr. Tatjana Welzer Družovec: 6th International Workshop on Web Based Collaboration, conference, co-organisation, Krakow, Poland, Sept. 4–8, 2006.

Prof. Dr. Tatjana Welzer Družovec: 21th IFIP International Information Security Conference, conference, co-organisation, Karlstad, Sweden, May 22–24, 2006.

Prof. Dr. Tatjana Welzer Družovec: Advances in Database and Information Systems, conference, co-organisation, Thessaloniki, Greece, Sep. 3–7, 2006.


Prof. Dr. Tatjana Welzer Družovec: GeneRation, seminar, organisation and implementation, Ljubljana, Slovenia, Mar. 2–4, 2006.

Prof. Dr. Tatjana Welzer Družovec: Preparing meeting for QA seminar for national Bologna promotores, seminar, co-organisation and implementation, Brussels, Belgium, Oct. 3–4, 2006.

Prof. Dr. Tatjana Welzer Družovec: Promotion of Bologna process, international workshop, organisation and implementation, Maribor, Ljubljana, Bruselj, Jan. 1–31, 2006.

Prof. Dr. Tatjana Welzer Družovec: Socrates-Erasmus national coordinators meeting, expert consultation, implementation, Piran, Slovenia, June 1, 2006.

Prof. Dr. Tatjana Welzer Družovec: Reviewer for Uporabna informatika, reviewer and editor committee member.

Dr. Izidor Golob: Reviewer for Uporabna informatika, reviewer on magazin Uporabna informatika.

Dr. Izidor Golob, prof. Dr. Tatjana Welzer Družovec:

First National Technology Platform Conference "Media in e-networks", coordination and co-preparation, Maribor, Slovenia, Sep. 20, 2006.


Marko Hölbl, Prof. Dr. Tatjana Welzer Družovec:

Research and PhD research project- preparation visit, working visit, Graz, Austria, Feb. 15, 2006.

Aida Kamišalić: PhD research project, research work, Tarragona, Spain, Mar. 25 to Nov. 6, 2006.

Dr. Izidor Golob, Prof. Dr. Tatjana Welzer Družovec:

Visit within the project "Improving Information Quality in Data Warehousing Environments", working visit, Braga, Portugal, May 3–8, 2006.

Prof. Dr. Tatjana Welzer Družovec: Socrates-Erasmus teaching mobility, working visit, Braga, Portugal, May 3–8, 2006.


Marko Hölbl, Prof. Dr. Tatjana Welzer Družovec:

Nacional representatives of Slovenia in IFIP TC 11, working visit, Karlstad, Sweden, May 21, 2006.

Prof. Dr. Tatjana Welzer Družovec: Research work meetings, working visit, Halifax, Nova Scotia, Canada, July 13–14, 2006.

Prof. Dr. Tatjana Welzer Družovec: Preparation project meeting for 6th framework project, working visit, Paris, France, Aug. 31, 2006.

Prof. Dr. Tatjana Welzer Družovec: Visit within the the project »Integration of Data Mining Techniques into Intelligent Systems«, working visit, Thessaloniki, Greece, Sept. 4–7, 2006.

Prof. Dr. Tatjana Welzer Družovec: Socrates-Erasmus teaching mobility, working visit, Pori, Finland, Sept. 16–20, 2006.

Marko Hölbl: Socrates-Erasmus teaching mobility, working visit, Taragona, Spain, Sept. 24–30, 2006.

Prof. Dr. Tatjana Welzer Družovec: ECTS seminar preparation and meeting on Socrates-Erasmus cooperation, working visit, Graz, Austria, Nov. 14, 2006.

Dr. Izidor Golob: Participation at the NEM Mirror Group Meeting, working visit, Dublin, Ireland, Feb. 22, 2006.

GUESTS AND VISITORS

Hannu Jaakkola (Tampere University of Technology, Tampere, Finland):

Visit within the project »Data Mining – Its Assessment and Security«, working visit, Jan. 30 to Feb. 3, 2006.

Elisa Grabner (Karl Franzens Universität Graz, Graz, Austria):

Participating on Socrates-Erasmus project, working visit, Mar. 1 to Dec. 31, 2006.

Myrna Magnan (IUT Marseille St Jerome, Universite Aix Marseille III, Marseille, France):

Socrates-Erasmus teaching mobility and project meeting ValeurTech II, working visit, Apr. 22–26, 2006.


Yannis Manolopoulo (Aristotle University of Thessaloniki, Department of Informatics, Thessaloniki, Greece):

Working visit within the project Integration of Data Mining Tecniques into Intelligent Systems, working visit, Apr. 24–28, 2006.

Bernard Godeaux, Philipe Parmentier (Haute École de la Province de Liege Léon-Eli TROCLET, Liege, Belgium):

Socrates-Erasmus teaching mobility, working visit, May 4–7, 2006.


Study visit of postgraduated MBA students from Pori, Finland at UM, UM FERI and slovenians companies, postgraduate research work, May 15–19, 2006.

Peter Lah (St. Louis University, ZDA, St. Louis, MO 63103, United States):

Visit within the project "Perceiving And Enacting Social And Political Identities In Slovenia and United States – A view from globalization and European integration perspective", working visit, May 22 to June 16, 2006.


Visit within the project »Data Mining, working visit, May 26–29, 2006.

Orlando Belo (University of Minho, Braga, Portugal):

Visit within the project "Improving Information Quality in Data Warehousing Environments" and preparation visit for new project, working visit, June 10–15, 2006.


Visit within the project »Data Mining, working visit, June 25–29, 2006.

Georges Linares, Benjamin Lecouteux (University of Avignon, Avignon, France):

Working visit within MDIDiITS project, working visit, Dec. 18–23, 2006.

Gabriele Gianini (University of Milano, Milano, Italy):

Working visit, working visit, June 14-15, 2006



Research cooperation, research visit, June 13-16, 2006.

Luis Rodríguez-Roselló (EC, Networked Audiovisual Systems, DG Information Society and Media, Brussels, Belgium):

Invited lecture at the first National Technology Platform Conference "Media in e-networks", working visit, Maribor, Sep. 20, 2006.

Jean-Michel Dupont (Executive Director of the European Technology Platform NEM Thomson):

Invited lecture at the first National Technology Platform Conference "Media in e-networks", working visit, Maribor, Sep. 20, 2006.


Prof. Dr. Tatjana Welzer Družovec: acknowledgment for exceptional contribution to development of educational programs on FERI, Maribor, Slovenia, Dec. 14, 2006.

Computer Mediated Communication Laboratory IN - 37

COMPUTER MEDIATED COMMUNICATION LABORATORY

Head:

Prof. Dr. Jozsef Györkös

Phone: +386 2 220 73 51


RESEARCH PROJECTS



GREAT-IST GREAT-IST: 6th Framework Programme (EU IST)

Participants: Andrej Bregar, MSc; Prof. Dr. Jozsef Györkös; Boris Lahovnik

GREAT-IST is a strategic project involving the target countries of Central and Eastern Europe, namely the Western Balkans, the Newly Independent States and the Associated Candidate Countries. GREAT-IST aims at fulfilling the strong needs of the "Great European East" to become a more integrated area in research and technology in Information Society Technology, in particular with the European Union Countries.

Each country shows different stages of IST uptake and research infrastructure. Therefore, the project aims at solving these priorities, by providing a wide co-operation platform open to several categories of stakeholders (science and research centres, universities and other relevant actors in IST and research community, governments, institutional levels, industrial associations and companies)

PUBLICATIONS

Andrej Bregar, Matjaž B. Jurič, “ Pomen odločitvenih modelov za avtomatizirana pogajanja v e-poslovanju,” Uporab. inform. (Ljubl.), Vol. 14, no. 3, pp. 134-141, Jul., Aug., Sep. 2006.

IN - 38 Computer Mediated Communication Laboratory

Andrej Bregar, Matjaž B. Jurič, “Pomen odločitvenih modelov za avtomatizirana pogajanja v e-poslovanju,” V partnerstvu z informatiko do poslovne odličnosti: zbornik posvetovanja, Dnevi slovenske informatike, Portorož, Slovenia, Apr. 2006.

József Györkös, Tomaž Seljak, “COBISS.NET: support to knowledge and intercultural dialogue,” The role of universities and the competitiveness of the Danube region, Maribor, Slovenia, 2006, pp. 215-219.


Boris Lahovnik: Organising committee member, conference, Slovenian Technology Platform For Software And Services, Maribor, Slovenia, June 12, 2006.

Boris Lahovnik: Organising committee member, conference, Eleventh Conference OTS'2006 IS Development - Advanced technologies and services, Maribor, Slovenia, June 13–14, 2006.

Boris Lahovnik: Organising committee member, conference, Information science and law, Maribor, Slovenia, June 13–14, 2006.

Boris Lahovnik: Organising committee member, international conference, Knowledge Management in Organizations - New Trends in Knowledge Management 2006, Maribor, Slovenia, June 13–14, 2006.

Prof. Dr. Jozsef Györkös: Vice-chairman, Programme committee vice-chairman, international conference, Information society 2006, Ljubljana, Slovenia, Oct. 9–14, 2006.

Boris Lahovnik: Organising committee member, expert consultation, DAN STANDARDIZACIJE (Standardi: velike koristi za majhna podjetja), Maribor, Slovenia, Oct. 13, 2006.

Prof. Dr. Jozsef Györkös: Programme committee member, conference, Education in Information Society, Ljubljana, Slovenia, Oct. 13–14, 2006.

Computer Mediated Communication Laboratory IN - 39

Andrej Bregar, MSc: Reviewer, member of expert committee for evaluation of technological and business aspects, arrangement, Hevreka!06, Ljubljana, Slovenia, Oct. 24–26, 2006.

Prof. Dr. Jozsef Györkös: Reviewer for Uporabna informatika.

IN - 40 Real-Time Systems Laboratory

REAL-TIME SYSTEMS LABORATORY

Head:

Prof. Dr. Matjaž Colnarič

Phone: +386 2 220 74 30


RESEARCH PROJECTS


Industrial projects

4302-7/2006-10 Inteligentni aktuatorji (Intelligent valves)

Leader: Samo Krančan (Danfoss Trata) Participants: Prof. Dr. Matjaž Colnarič, Asst. Prof. Dr. Domen Verber, Stanislav

Moraus, Rok Ostrovršnik Project partners: Danfoss Trata, ATech elektronika, Iskra Sistemi, Inštitut Jožef

Stefan


The goal of the project is to develop an advanced HVAC valve capable of self-adaptation and detection of modern communication protocols. Such valves will hopefully have the ability to minimize abnormal vibrations in system and increase the durability of mechanical components. The ability to self detect the underlying communication protocol will simplify installation and configuration of the valve and simplify its replacement in the case of a breakdown.

The task of the Laboratory for real time systems is to develop a communication module able to recognize and to configure valve for different communication protocols. (LON, EIB/KNX, Modbus ...).

Real-Time Systems Laboratory IN - 41



Z2-6398-0796 Uporaba evolucijskih modelov za zagotavljanje robustnosti vgrajenih sistemov (Application of evolutionary models to assure fault-tolerance in embedded systems)

Leader: Prof. Dr. Ivan Rozman (Faculty of Electrical Engineering and Computer Science)

Participants: Dr. Matej Šprogar

Financed by: Ministry of Education, Science and Sport of the Republic of Slovenia

Duration: Sept. 2004 to Aug. 2006

This project focused on the use of machine learning techniques, in specific genetic programming, in the design of fault-detection modules in embedded control systems. Based on analysis of the existing research and solutions, a concept of the "monitoring cell" was chosen as the working platform. The monitoring cell enables the detection of faults in the controller operation. The automatic programming of monitoring cells was made possible by the use of machine learning. The decision model was a hyper-cube, which is simple enough for implementation in the monitoring cell and also allows for formal verification of its operation. To automatically generate the hyper-cubes, a special GP library was created, consisting of special genetic operators that allow for manipulation of hyper-cubes based on the recorded data of a functioning control system. The monitoring cell was implemented in hardware.

3311-04-855022 CO ICT RR6 Center odličnosti Informacijske in komunikacijske tehnologije: Verifikacija pravilnosti delovanja komunikacijskih sistemov (CO ICT RR6 Centre of excellence Information and communication technologies: Correctness verification of communication system functioning)

Leader: Prof. Dr. Zmago Brezočnik (Faculty of Electrical Engineering and Computer Science)

Participants: Prof. Dr. Matjaž Colnarič; Filip Samo Balan, MSc; Dr. Robert Meolic; Assoc. Prof. Dr. Tatjana Kapus; Prof. Dr. Zmago Brezočnik; Dr. Aleksander Vreže; Dr. Boštjan Vlaovič

Project partners: Institute for Economic Research, Inštitut Jožef Stefan, Iskratel Ltd.

Financed by: Iskratel Ltd., European Regional Development Fund, Ministry of


Higher Education, Science and Technology of the Republic of Slovenia


The basic objective of this research and development project is to get new knowledge in the area of communication system verification and to transfer the existing knowledge in this area of the industry. The planned activities are divided into seven phases: analysis of the existing verification methods and tools, choice of formal verification examples, model generation, formal verification, supplementation of the tools and methods, analysis of the results, and knowledge transfer.

PUBLICATIONS


Matjaž Colnarič, Domen Verber, Matej Šprogar, “A concept of fault detection in embedded control systems by monitoring cells,” 6th IFAC Symposium on Fault Detection, Supervision and Safety of Technical Processes, Bejing, China, Aug. 2006, pp. 919-924.

Roman Gumzej, Matjaž Colnarič, Wolfgang A. Halang, “Introducing QoS parameters into design and development of real-time systems,” 29th International convention MIPRO 2006, conference Telecommunications & Information 2006, Opatija, Croatia, May 2006, pp. 181-186.

Roman Gumzej, Matjaž Colnarič, Wolfgang A. Halang, “Safe and timely scenario switching in UML real-time projects,” The ninth IEEE International symposium on object and component-oriented real-time distributed computing [also] ISORC 2006, Gyengju, Korea, Apr. 2006, pp. 335-342.

Matej Šprogar, Domen Verber, “Genetic programming instructions for simple hyperspace partitioning,” Intelligent systems and control: proceedings of the Ninth IASTED International conference on Intelligent systems and control, Honolulu, Hawaii, USA, Aug. 2006, pp. 80-85.

Matej Šprogar, Domen Verber, Matjaž Colnarič, “Considerations for selecting functions and terminals in genetic programming for fault-detection in embedded systems,” ICINCO 2006: proceedings of the third international conference on informatics in control, automation and robotics, Intelligent control systems and optimization, Setúbal, Portugal, Aug. 2006, pp. 142-147.

Real-Time Systems Laboratory IN - 43

Domen Verber, Bogdan Lent, Wolfgang A. Halang, “Firmware support for disjunctive dataflow driven distributed control applications,” Proceedings of IFAC workshop on programmable devices and embedded systems PDeS 2006, Brno, Slovakia, Feb. 2006, pp. 84-89.


Matjaž Colnarič: “Embedded systems,” introduction to embedded systems, Ljubljana, Slovenia, Oct. 16, 2006.

Matjaž Colnarič: “Embedded systems - fundamentals, synchonization, scheduling,” introduction to real-time systems, Ljubljana, Slovenia, Nov. 29, 2006.


Prof. Dr. Matjaž Colnarič: Member of strategic board, Coordinator of the working group, expert consultation, Artemis technology platform, Ljubljana, Slovenia, Jan. 1 to Dec. 31, 2006.

Prof. Dr. Matjaž Colnarič: Reviewer for Journal of Computing and Information Technology, editor.

Prof. Dr. Matjaž Colnarič: Reviewer for Real-Time Systems, The International Journal of Time-Critical Computing Systems, associate editor.

Prof. Dr. Matjaž Colnarič: Reviewer for ATP International, Automation Technology in Practice, associate editor.


Dr. Roman Gumzej, Stanislav Moraus, Rok Ostrovršnik, Asst. Prof. Dr. Domen Verber:

ARTIST2 - Graduate Course on Embedded Control Systems, seminar participation, Praha 2, Czech Republic, Apr. 3–7, 2006.

Prof. Dr. Matjaž Colnarič: International cooperation, visit, Osijek, Croatia, May 14–16, 2006.


Prof. Dr. Matjaž Colnarič: Co-mentor and the member of the dissertation committee of J. Stackelberg, working visit, Hagen, Germany, June 21–22, 2006.

Prof. Dr. Matjaž Colnarič: Co-mentor and the member of the dissertation committee of M. Skambraks, working visit, Hagen, Germany, Nov. 24–25, 2006.

GUESTS AND VISITORS

Martin Skambraks (Fernuniversitaet Hagen, Hagen, Germany):

Working visit, postgraduate research work, Mar. 22–26, 2006.

Jim Sena (California Polytechnic State University, San Luis Obispo, United States):

Invited lecture and a working visit, visit, Apr. 20–21, 2006.

Institute of Media Communications MC – 1

INSTITUTE OF MEDIA COMMUNICATIONS

Head:


Phone: +386 2 220 7299


URL: http://www.in.feri.uni-mb.si

University undergraduate Media Communication Studies is a multidisciplinary study programme that integrates knowledge from the areas of radio- and TV-production, information systems, graphical communication (computer graphics, art and design), and telecommunication.

The multidisciplinary programme provides students with all the technological and organizational knowledge they need for their professional work and further professional and academic development. Having in mind the development of press- and electronic-media in the future, the university level of studies in Media Communication provides the foundation, not only for performing work in radio, TV and production houses, but prepares students for a career in marketing companies, in interactive media publishing companies, in Internet-service providers, in industry, especially in developing company marketing material and selling products or services on the Internet. In the first years of studies emphasis is given to the theoretical part, while the practical work is carried out in the final years. The programme is, in part, carried out in media houses and similar environments to gain experience with specific working areas.

The programme has been developed carefully, taking into account the development in disciplines, covered by the programme, considering the specifics of Slovenia and the regions. The curriculum is harmonized with similar programmes from all over the world.

The knowledge, gained through leading and carrying out various projects by the institutes members in the above mentioned areas, is, therefore, directly incorporated into the educational process.

MC – 2 Institute of Media Communications

Employees: Asst. Prof. Dr. Marjan Družovec; Asst. Prof. Dr. Melita Zajec; Asst. Prof. Dr. Rok Lampe, Dr. Szuana Žilič - Fišer; Dr. Marko Ivanišin, Mag. Tina Tomažič, Mag. Katja Udir - Mišič, BSc., Jaka Polutnik

RESEARCH PROJECTS


Industrial projects

EIM Spletne strani EIM (EIM web pages)


Participants: Mag. Katja Udir-Mišič, Zoran Kancler, Dr. Izidor Golob, Dr. Marko Ivanišin

Project partners: Economic Insttitute Maribor Ltd.

Financed by: Economic Insttitute Maribor Ltd.

The project includes an analysis of customer’s up to date requests, the preparation of a proposed solution, and the realization of the chosen solution and user training.


V2-0219 Digitalna forenzika in njena vloga pri sodnih postopkih (Digital forensics and its role in judicial processes)

Leader: Dr. Danilo Korže (Faculty of Electrical Engineering and Computer Science)

Participants: Igor Belič, MSc; Asst. Prof. Dr. Rok Lampe; Jurij Munda; Urška Kežmah, MSc; Dr. Liljana Selinšek; Polona Novak; Benjamin Lesjak, MSc; Mario Casar; Milan Gabor

Project partners: Viris d.o.o., Faculty of Law, University of Maribor, Faculty of Criminal Justice and Security, University of Maribor

Financed by: Slovenian Research Agency, Ministrstvo za visoko šolstvo, znanost in tehnologijo Republike Slovenije

This interdisciplinary investigation of computer and internet forensics and law will adress the


security of information systems and their forensics and so contribute to further developments in the area of slovene legislation about the computer forensics and judge the adoption and consideration of the digital evidences gathered during the investigation process.

The research will primary analyse the present state of the art in the area of digital evidence in solving computer crime in Slovenia. In continutation of the project the comparative study of results, methods and best pratice in some European countries will be performed in the area of interest. Some guidelines of the European Union will be studied and the harmony of the present practice with these guidelines will be checked.

In the research, the possibilies for usage and verification of tools and procedures will be exposed, which are used in collecting digital evidence and their improvements, which could contribute to enlarging the percentage of successfully considered digital evidence in the judicial processes.

From the judicial viewpoint, the possibilities of proposing some corrections to the present legislation will be studied, so that it could be improved to enable easier input into the force of the digital evidence in the judicial process.


NATO Former Yugoslavia/Slovenia: The Role Of The Mass Media In The Peace-Building Process


Participants: Zala Volčič, Andrew Calabrese Project partners: NATO Public Diplomacy Division

Financed by: NATO Public Diplomacy Division

This project is concerned with contemporary information and communication technologies’ transformations in the former Yugoslav countries. The specific focus is on media, culture and communication, in terms of both security and policy activities. The central hypothesis is that new media developments - information and communication technologies - are creating a new transnational cultural order that is of specific importance in the countries of the former Yugoslavia after the end of wars and changes. However, political, economic and cultural rebuilding can take place only in an environment where civil relations are subjected to a democratization process. But first, one has to create a space where information and communication technologies are contributing constructively to the rebuilding of society. The project proposes to investigate the human, national and regional dimensions of post-conflict peace-building challenges; civil relations in war-torn societies; democratization processes and the role of the media; and the role of local and external actors in meeting the challenge of sustainable post-conflict security sector reform. First results already confirm some


hypothesis.

NocRazisk Researchers' Night UM

Leader: Brigita Horvat Participants: Jaka Polutnik, Dr. Suzana Žilič Fišer, Prof. Dr. Tatjana Welzer

Družovec, Asst. Prof. Dr. Marjan Družovec, Dr. Marko Ivanišin


In 2006, from the evening hours of September 22nd to the morning hours of September 23rd in altogether 32 research institutions in various EU member states, there an event took place event called Researcher's Night. This event aimed to present and promote research, above all researchers and the research profession. In 2006 the common motive was "Researchers are among us" and it aimed to demistificate the researcher's profession. The events were focused on presenting the life of researchers apart from the workplace, so the general public was able to understand that researchers are ordinary people and that among ordinary people there are many researchers.

QualiMedia Improving the Quality of Multimedia Products for Eurocultural Education and Blended Learning in Europe

Leader: Dr. Marko Ivanišin (Faculty of Electrical Engineering and Computer Science)

Participants: Mateja Verlič, Asst. Prof. Dr. Marjan Družovec, Prof. Dr. Tatjana Welzer Družovec

Project partners: Institut für Bildung und Medien der Gesellschaft für Pädagogik und Information, Media & Communicatie Institut der Universiteit van Amsterdam, Department of Comminications & Mass Media at National and Capodistrian University of Athens, Institut für Publizistik und Kommunikationswissenschaft an der Universität Wien


The project goal is to improve and accelerate the quality of developement and production in the fields of multimedia in all organisations and companies that deal with the development, production, distribution, and implementation of multimedia products and programs. To reach this goal we are organising the exchange of experience and best practices in Europe with the participation of people involved in the development and production of multimedia (production, design, didactization, distribution, and pedagogical usability).

Our requirements for quality focus in the following fields:

1.pedagogical content (Content Management, goals, aims, and feasibility of education)


2.didactical and methodological feasibility (management, environment, design, and learning feasibility)

3.design (mediality)

4.usability (interface)

Our network focuses on the following tasks and activities:

-experience exchange by implementation of european workshops

-forum for quality and further education by the implementation of european project seminars

-production and distribution of quality' suggestions and criteria

-documentation of quality' multimedia products (data base)

-distribution of best-practice multimedia products (in internet, by newsletter, fairs)

-setting up a transnational internet forum for teachers and an evaluational internet forum for learners.

PUBLICATIONS

Suzana Žilič Fišer, “Traditional television and its role in a dynamic media field,” Informatologia (Zagreb), Vol. 39, No. 3, pp. 160-175, 2006.

Suzana Žilič Fišer, “Upravljanje radiotelevizije kot proces kompleksnega usklajevanja,” Podjet. delo, leto 32, No. 5, pp. 949-959, 2006.

Tatjana Welzer-Družovec, Marjan Družovec, Marko Hölbl, Boštjan Brumen, Aida Kamišalić, Hannu Jaakkola, “Data policy for intelligent systems,” 10th International Conference on Intelligent Engineering Systems, London, UK, Jun. 2006, pp. 213-215.

Tatjana Welzer-Družovec, Izidor Golob, Marjan Družovec, Boštjan Brumen, Suzana Žilič Fišer, David Riaňo, Lenka Lhotska, “Influence of domain knowledge on data quality,” KMO'2006: knowledge management in organizations: proceedings of the First International Conference for New Trends in Knowledge Management, Maribor, Slovenia, Jun. 2006, pp. 177-179.

Tatjana Welzer-Družovec, Peter Kokol, Ana Habjanič, Marjan Družovec, “Teaching IT in the postgraduate health care and nursing program,” Advancing health information management and health informatics: issues, strategies, and tools: proceedings of the eleventh international symposium on health information management research, Halifax, Nova Scotia, Canada, Jul. 2006, pp. 128-131.


Marko Ivanišin, Regionalentwicklung im Spannungsfeld von Nachhaltigkeit und Identität: mit einem Geleitwort von Prof. Dr. Thomas A. Baue: Wiesbaden, Deutscher Universitäts-Verlag 2006.


Marko Ivanišin: “Communication Studies in Time, Space and Culture,” presentation at 2nd JETiC Annual Conference, Opatija, Croatia, June 16, 2006.

Marjan Družovec: “Radio diffusion and telecomunication,” socrates-Erasmus teaching mobility, Pori, Finland, Sept. 16, 2006.

Suzana Žilič Fišer: “Redefinition of media in digital future,” role of the media content in the digital future, Ljubljana, Slovenia, Sept. 28, 2006.

Marko Ivanišin, Suzana Žilič Fišer: “Public-Commercial Hybrid Channel 4,” presentation at Dubrovački medijski dani, Dubrovnik, Croatia, Nov. 9, 2006.

Melita Zajc: “Kako delati zgodovino v pogojih, ki jih nismo postavili sami,” lecture within MKC-Kulturni inkubator Maribor, Maribor, Slovenia, Nov. 14, 2006.

Melita Zajc: “Filmske besede pisanje o filmu,” ekranova zimska filmska šola, Ljubljana, Slovenia, Dec. 16, 2006.


Dr. Marko Ivanišin: Multimedia Workshop on Quality of Slovene E-Learning Products, workshop, implementation, Maribor, Slovenia, Dec. 15–16, 2006.

Dr. Marko Ivanišin: Multimedia Workshop on Quality of Hungarian E-Learning Products“, workshop, participation, Budapest, Hungary, April 6, 2006.

Asst. Prof. Dr. Marjan Družovec, Jaka Polutnik:

Bologna process- ECTS, workshop, organisation and implementation, Maribor, Slovenia, Nov. 30, 2006.

Asst. Prof. Dr. Marjan Družovec: WMSCI 2006, conference, co-ordinated organisation, Orlando , United States, July 16–19,


2006.

Dr. Marko Ivanišin: Presenting EduMedia Awards, arrangement, co-Ordinated organisation, Vienna, Austria, Feb. 15 to Mar. 31, 2006.

Dr. Suzana Žilič Fišer: Commission for supporting Media project, expert consultation, organisation and implementation, Ljubljana, Slovenia, Jan. 1 to Dec. 31, 2006.

Asst. Prof. Dr. Marjan Družovec: Reviewer for IEEE Intelligent Systems.


Prof. Dr. Tatjana Welzer Družovec: Preparation meeting for new Socrates-Erasmus bilateral agreement., working visit, Braga, Portugal, May 4–5, 2006.

Dr. Marko Ivanišin: Conference and closing of EduMedia and EuroMedia Awards, visit, Vienna, Austria, June 20–22, 2006.

Prof. Dr. Tatjana Welzer Družovec: Preparation meeting for new Socrates-Erasmus bilateral agreement., working visit, Rovaniemi, Finland, Sept. 20–24, 2006.

Dr. Marko Ivanišin: Project meeting and seminar organisation, project meeting participation, Amsterdam, The Netherlands, Oct. 11–15, 2006.

GUESTS AND VISITORS

Jukka Mäkelä (University of Lapland, Rovaniemi, Finland):

Preparation meeting for cooperation beetwen FERI and University of Lapland, working visit, Feb. 2, 2006.

Elisa Grabner (Karl Franzens Universität Graz, Graz, Austria):

Participating on Socrates-Erasmus project, working visit, Mar. 1 to Dec. 31, 2006.


Myrna Magnan (IUT Marseille St Jerome, Universite Aix Marseille III, Marseille, France):

Socrates-Erasmus teaching mobility and project meeting ValeurTech II, working visit, Apr. 22–26, 2006.

Bernard Godeaux, Philipe Parmentier (Haute École de la Province de Liege Léon-Eli TROCLET, Liege, Belgium):

Socrates-Erasmus teaching mobility, working visit, May 4–7, 2006.


Study visit of postgraduated MBA students from Pori, Finland at UM, UM FERI and slovenians companies, working visit, May 15–19, 2006.

Peter Lah (St. Louis University, USA, St. Louis, MO 63103, United States):

Lectures for the Study programm Media Communications, working visit, May 22 to June 16, 2006.

Patrick Lebegue (IUT A de Lille, Lille, France):

Socrates-Erasmus working visit, working visit, June 1–5, 2006.

Julia Niehs (Graz University of Technology, Graz, Austria):

ECTS seminar, seminar participation, Nov. 30, 2006.

Documents

UNIVERSITY OF MARIBOR...UNIVERSITY OF MARIBOR FACULTY OF ELECTRICAL ENGINEERING AND COMPUTER SCIENCE ANNUAL REPORT RESEARCH ACTIVITIES 2006 MARIBOR, APRIL 2007 UNIVERSITY OF MARIBOR