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《Acta Scientiarum Naturalium Universitatis Pekinensis》 2007-06
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Continuous and Discrete Dynamic Fields Integrated Model and Its Database Extension

HUANG Fengru FANG Yu CHEN Bin 1)PENG Xia YIN Shuangshi(Institute of Remote Sensing & GIS,Peking University,Beijing,100871  
Based on the field model,a uniform dynamic field model is proposed to support representing the characteristics of distribution continuity and time development of spatial phenomena.Through analytical expressions and arrays data structures,data types and operating functions of the new model are extended in an object-relational database to support uniform representation,management,access and spatio-temporal querying for continuous and discrete dynamic fields.Several examples are demonstrated to discuss the representing and querying ability of the new model and its database extension.
【Fund】: 国家自然科学基金(40501052);; 国家“863”计划(2006AA12Z201)资助项目
【CateGory Index】: TP311.52
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
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