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Ain-Shams University

Faculty of Agriculture

DECISION SUPPORT SYSTEMS : ANIMAL PRODUCTION APPLICATIONS

By

Dr. TALAAT REFAAThttps://www.linkedin.com/in/talaatrefaat

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Ain-Shams University Faculty of Agriculture

DECISION SUPPORT SYSTEMS : ANIMAL PRODUCTION APPLICATIONS

By

Dr. TALAAT HARB M REFAAThttps://www.linkedin.com/in/talaatrefaat

April, 28, 2007

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FRAME WORK: PROBLEM

DEFINITION To establish a frame work for

presentation SUBJECT To limit the domain of work / SCOPE To organize our thoughts & ideas. To get the BEST time utilization. To decide on different issues. OBJECTIVES

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PRESENTATION TOPICS DSS definition. Types of computer-based system. Decision making process. Systems Approach: A System Life Cycle.

Requirements for DSS. Technical capabilities of DSS. Alternative terminologies for DSS. Applications.

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DSS Definition

A DSS can be described as a computer-based information system that helps a manager make key decisions and thereby improves the effectiveness of managers problem-solving process.

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Types of computer-based system

Operating Systems (OS). Application Systems: Payroll, Inventory,

Customer Invoice, Feeding Cost, Mat. Price , DietMix.

Database Management Systems (DBMS) Management Information Systems (MIS) Decision Support Systems (DSS)

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DECISION MAKING PROCESS

Cut off,,,,,, a solution,,,,,, a direction,,,, responsible freedom,,,, risk,,, objectives??.

the best alternative for the DECISION MAKER,,,,, Decision levels, STRATIGICAL, TACTICAL,

OPERATIONAL. Scientific methods ,models, simulations, team work.

Decision Making approaches : DISCRIPTIVE, SCIENTIFIC.

Pure Intuition. (live with it, observational/conventional ) Making use of experts. By means of committees. QUALITATIVE. QUANTITATIVE.

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An Organization

Is a network of interdependent systems, designed to perform the activities vital to human existence.

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Systems ApproachStructured Analysis & Design

An Organization. A System. A Procedure. The Systems Analyst. The System Study Cycle.

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A System

Is a network of interdependent procedures, that are joined together to perform an activity.

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A Procedure

Is a precise series of step- by- step instructions that explain :

will be done . WHAT is to be done , WHO will do it , WHEN it will be done , & HOW it will be done.

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The Systems Analyst

Is a methods person, who can start with a complex problem, break it down, and identify the reasonable solutions.

The ANALYST can : Study ill system, come up with superior alternatives. Given some number of objectives, device systematic

means of attaining them. Differentiate & Integrate any complex system.

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The system study cycle Problem Definition.SUBJECT , SCOPE , OBJECTIVES, reporting

machinery.

Prepare an outline of the system study.Organize into major areas ,plan.

General Information on area under study.Identify areas, background, politics.

Interaction between areas being studied.Org structure, i/p , o/p resources.

Understanding the existing system.Develop your approach, interviewing,………

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The system study cycle (cont.) Define the new systems requirements.ses , sis ,,,,,,,,,,,,,,,,,,,,,,,,,, srd

Designing the new system.Problem solving vs decision making.

Economic cost comparisons.Two concepts of cost analysis: payback period,

marginal efficiency of investment.

Selling the system.Gaining acceptance : thro’ written rep, verbal

pres.

Implementation, follow-up & re-evaluation.Old , new system , why re-evaluation. Unending

process.

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Requirements for DSSCharacteristics enable DSS to achieve Objectives: Relies heavily on: Sophisticated Quantitative

Tech of Model Building, Else ( if Analytical Optimization can’t) ,

Relies on Simulation Models. Uses Statistical Analysis to collect data , predict

trends. Non-computer-oriented people can use it in an

interactive mode. Designed to remain flexible and adaptable, to

meet specific decision-making style.

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Tools of dss

Deterministic Models Linear Programming. (LP) Resource Allocation Problems. Assignment Problems. Scheduling Problems. Dynamic Programming. Non-Linear Programming. Shortest Path Programming. Maximum Flow Problems. Transportation or Routing Problems Goal Programming.

There is more than one Classification; One is as follow:

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Tools of dss (Cont)

Probabilistic and Stochastic Models

Regression Analysis. Forecasting Models. Time Series Analysis. Decision Trees. Project Management Problems. Inventory Control Models. Queuing Models. Simulation Models.

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Technical Capabilities of DSS

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For

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Problem Motivation MPP Characteristics. MPP in Developing Countries Vs

Developed Countries A Unified Approach For:

ANALYZING, FORMULATING & SOLVING MPP

Applications

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Is it possible to systematize tackling manpower problems ?!

“Solving” an MPP, already formulated, is a part of tackling the whole management situation.

There is exist a big difference between “Solving” a specific MPP, and “Solving” a general MPP.

Yet, common features characterize MPP’s

In the literature 3 generations are identified

A Unified Approach For ANALYZING, FORMULATING & SOLVING MPP’s

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