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GIF
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See Graphics Interchange Format
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GIS
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See Geographic Information System
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GNSS
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See Global Navigation Satellite Systems
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GPRS
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See General Packet Radio Service
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GPS
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See Global Positioning System
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GRID computing
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Grid computing (or the use of a computational grid) is applying the resources of many computers in a network to a single problem at the same time - usually to a scientific or technical problem that requires a great number of computer processing cycles or access to large amounts of data.
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GSDI
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See Global Spatial Data Infrastructure supports ready global access to geographic information - www.gsdi.org
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GSM
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See Global System for Mobile Communications
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Galileo
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A constellation of 24 to 30 Medium Earth Orbit (MEO) Satellites supporting a Global Navigation Satellite Service. This primary vocation will, in time, permit the development of various Value Added Services.
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Gateway
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The technical meaning is a hardware or software set-up that translates between two dissimilar protocols. Another, sloppier meaning of gateway is to describe any mechanism for providing access to another system.
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General Packet Radio Service (GPRS)
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A service that allows non-voice data to be sent and received across GSM and TDMA communications networks. GPRS can send larger messages than SMS, and it enables cell phones to achieve transfer rates of 100 Kbps.
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Generic service
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A particular service, either provided by a market product or supplied by third party service providers, that contribute to the provision of an application service within a trans-European network. Generic services that have agreed upon as suitable for the setting up of interoperable trans-European networks are described in this guideline document.
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Geographic Information System (GIS)
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This enables you to visualise the geographic aspects of a body of data. Basically, it allows queries or analysis with the results arriving in the form of some kind of map.
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Global Navigation Satellite Systems (GNSS)
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A constellation of 24 to 30 Medium Earth Orbit (MEO) Satellites supporting a Global Navigation Satellite Service. This primary vocation will, in time, permit the development of various Value Added Services. Also called informally Galileo.
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Global Positioning System (GPS)
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A satellite navigation system used to determine terrestrial position, velocity, and time. The GPS system relays satellite signals that can be processed by a GPS receiver.
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Global Security
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The ability of an access control package to permit protection across a variety of mainframe environments, providing users with a common security interface to all.
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Global Spatial Data Infrastructure (GSDI)
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Global Spatial Data Infrastructure supports ready global access to geographic information (www.gsdi.org) through the coordinated actions of nations and organizations that promote awareness and implementation of complimentary policies, common standards and effective mechanisms for the development and availability of interoperable digital geographic data and technologies to support decision making at all scales for multiple purposes.
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Global System for Mobile Communications (GSM)
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This set of standards is widely used in Europe for cellular communications.
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Graphics Interchange Format (GIF)
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This compact file format is ideal for graphics that use only a few colours, as GIF images are limited to 256 colours.
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Groupware
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Programs that allow people to use the same documents by accessing a shared database, and work collaboratively when working in different locations.
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