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To provide evidence for groundwater management and development in Zhangye basin, comprehensive evaluation method is used to get suitability assessment. First, assessment indexes system is established, and then, AHP (analytic hierarchy process) is used to evaluate factor weight, at last, the suitability assessment is given by weighted sum using the function of spatial analysis in GIS. The paper gives...
Using ARCGIS software, built in Zhengzhou city on the digital map through the stack analysis, drawn from 1988 to 2002 in 14, built from the urban area of 73.73km2 to 159.00km2. An increase of 85.27km2, the average annual growth rate of 5.64 percent; The Zhengzhou city space expansion assumes the radiated pattern; The Zhengzhou city center of mass position has experienced first to the southeast direction...
The integration of services in heterogeneous, distributed grid environment is dynamic and diverse because of the disparate resources. Hence, this integration can be technically challenged due to the need of achieving various service when running on different platforms. So, in a grid environment, implementations of GIS (geographic information system) should not only concern their internal spatial characteristics,...
Recently, there has been a fast proliferation of applications creating geospatial data distributed somewhere that has to be processed, queried and analyzed efficiently. Consequently, there is a need for effective data processing technologies that are able to support such distributed query and analysis operations. The emergence of grid computing offers a well solution to accomplish this goal. Development...
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