Information technology is rapidly, the popularization of Internet spread widely and it seems to be accelerating. Trades and industry joined onto the party of enterprise information management. Some of the C/S architecture application transform to B/S along with the advance of technology, and among these, WebGIS should be consider seriously. In the management systems of
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The research of spatial data model is one of the hot topics of geographic information system. The performance of the application system which was constructed on the spatial data model was influenced directly by spatial data model. The abstraction, description and modeling of vector spatial data are also the research priorities of spatial data model.Taking
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The construction of ecotypic city is main target that cities develop in the 21 centuries. Urban Greenland as the main body of natural productivity in city structure is playing important role in the city ecosystem; therefore urban Greenland builds are catching governments of all countries attention in the world. That our country urban Greenland work
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Following the rapid development of the national economy, electricity consumers on the electric distribution reliability and power quality, efficiency and quality service have put forward higher requirements. On the existing electric distribution management methods can not meet the demand for high-speed development, with the GIS in the various industry in the successful application,and the network
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CyberCity often involves the modeling of Wide-field complex ground object of nature and humanity, especially difficulty in building the three-dimensional model which cover the whole city. Up to now,the construction of three-dimensional model is still a work which needs great investment,more difficult technology and complex technical requirements, and its level of technology is the very
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This thesis come from the new technique item of China Meteorological Administration (serial number CMATG2006M37) “The numerical models of mountain torrent disaster based on GIS and realization of the operation system”. Through simulating flood motion, forecasting the fluxes and the times that flood peak arrive some certain places, calculating submerging regions and accessing the disaster
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Information is an important resource, Sharing is a very effective way to play its important role. Shared platform of Poyang Lake spatial information can not only optimize and integrate the dispersed spatial data and avoid duplicate construction of information, but also promote the research and development of ecological environment and of Resources of Poyang Lake
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Information is an important resource, Sharing is a very effective way to play its important role. Shared platform of Poyang Lake spatial information can not only optimize and integrate the dispersed spatial data and avoid duplicate construction of information, but also promote the research and development of ecological environment and of Resources of Poyang Lake
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With the development of society and technology, human impact on the natural environment continuously increase in scope and intensity, which also caused ecological problems in the region continue to expand and intensify. So people study the ecological environment increasingly. Today, geographic information system technology applications have penetrated into all sectors in all fields, whether in
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Following the rapid development of the national economy, electricity consumers on the electric distribution reliability and power quality, efficiency and quality service have put forward higher requirements. On the existing electric distribution management methods can not meet the demand for high-speed development, with the GIS in the various industry in the successful application,and the network
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