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Emergency decision-making mining must consider “obstacle” between the geographic entities in spatial topological relations and their intrinsic relationship, or the integrity and accuracy of the mining results would not be guaranteed. Based on the deep research above, the mechanism and law of geospatial information was explored, the traditional spatial topological relations were expanded. The number...
The development of Earth information science breaks through the category of traditional Geographic Information System (GIS), it is an inevitable trend that making an improvement on the storage and management of geographic data. Geographic data possess some features such as massive, complicated data structure, intensive operation and strong autocorrelation which make the storage and management of geographic...
In the traditional Spatial Decision Support System (SDSS), most of the GIS systems only take the database system as the driving core, provide the raw data and the information from limited spatial processing. It can not give substantive solutions to satisfy the weak-structure system in most decision support applications. Moreover, models in SDSS often get the wrong analytical results because of lacking...
Conceptualization of complex spatio-temporal data that have both object- and field-like properties, such as hazardous chemical leak data and rainfall et al., has not yet been incorporated into GIS data models. A new approach is proposed in this paper for organizing data about such complex spatio-temporal data in a GIS as a hierarchy of geographic regions, geographic features, geographic processes,...
The aim of this research is to develop and implement a simple and easy-used method to major industrial chemical hazard risk assessment. Firstly, a new approach for the rapid assessment and relative ranking of the hazardous chemical installations is presented, which employed a multi-criteria decision-making technique (the analytic hierarchy process) for the hazard assessment of the substances and installations...
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