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Investigation of earth and how its system works
Broad range of topics related to earth and its landscape
Mountain building Structure of earth
Erosion of continents Location of natural resources
Volcanoes, paleoclimate and evolution
Space-age science
Remote sensing data High performance computing and State of the art visualization.
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Free Software
can be used, studied, modified, copied andredistributed either without any restriction or withrestriction allowed by the manufacture and generally
available without any charge (Subramanyam and Xia,2008).
Open Source Software (OSS)
that is available in source code under a software licensethat permits the users to study, modify, improve anddistribute to other users (Hauge et al., 2010)
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Expansive
low resource settings i.e. low budget schools particularlysuch schools in the developing countries
Examples
ENVI, Autodesk, Intergraph, ArcGIS and ERDASIMAGINE
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Its free!
To use and distribute Simple installation No licensing costs
It works
Fits common spatial data standards Broad functionality
Customizable
Often easier to learn than proprietary packages.
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Geoscience teaching & learning
mainly involves spatial data (both raster and vector) management,
analysis, visualisation and mapping.
This is what the propriety software such as ArcGIS and Erdas Imagine are meant for.
Free and open source software also provides the same functionalities.
Categories of available free & pen source RS and GIS Tools
Desktop RS and GIS software
Spatial data management systems (SDBMS)
Spatial data viewers
Virtual browsers
Mapping applications
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Integrated raster and vector design Import and export of widely used data formats Comprehensive set of image processing tools Orthophoto, image georeferencing, transformation
and mosaicing Advanced modeling and spatial data analysis 3D visualization with interactive editing for
optimal view findings
Rich projection and coordinate system library Geo-statisitical analyses, Spatial multiple criteria evaluation
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httP://tinyurl.com/freeGISsoft
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May not support teaching and learning with all thefinesse of large, expansive system. However, can geta job done
Worth examining as an alternative to buying orusing complex software and costly data.
Offer a free access to test the range of capabilitiesand make sure that it is compatible with yourteaching and learning requirements.
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