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Research on the Framework of Distributed Geography Model Integration Based on Document Object Model

Author: ZhangZhongSheng
Tutor: LongYi
School: Wuhan University
Course: Cartography and Geographic Information Systems
Keywords: Model Integration DOM model definition Distributed Systems Interoperability
CLC: P208
Type: Master's thesis
Year: 2005
Downloads: 88
Quote: 2
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Abstract


For a long time , GIS has been a spatial data collection , storage, management , analysis, display and other functions of expression and assembly drawings , but most current GIS spatial analysis and simulation functionality is still relatively weak , could not do complex support management decision-making tasks. Currently , GIS has the direction of spatial decision support system , to complete this transition must be a powerful model -based analysis . Analytical models to complete lacking of GIS functions, and can solve a lot of issues of interest to policy makers , therefore , it is necessary to integrate them into the GIS system is an inevitable trend . This paper describes the integration of GIS and analytical models of the development process , from the source code integration approach , integrated approach to the model library library support model integration under way , and gives way to integrate the advantages and disadvantages of these models , and also special emphasizes the traditional model of library support model integration under way existing limitations, such as long-distance calls are not supported with the current development of distributed systems are incompatible ; lack of process modeling process control and user intervention mechanisms , in order to overcome these limitations this paper presents a model definition DOM defines analytical models ; article then presented an overview of XML and the Document Object model (DOM) parser , and on this basis, detailed description of the basic content of the DOM model definition ; then according to the model defined DOM, the traditional model of library systems and COM / DCOM, detailed description of the geological model of distributed design and implementation of an integrated framework ; article also to atmospheric Gaussian model , for example, given an XML document DOM model definition and implementation model with application definition ; Finally, this article summarized the framework for future development and prospects are briefly analyzed .

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CLC: > Astronomy,Earth Sciences > Surveying and Mapping > General issues > Mapping database and information system
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