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The key techniques to implement system for mine gas disaster prevention are introduced. Based on the sensitive indexes of predicting coal and gas outbursts, the reasoning knowledge models for the regional prediction and working face prediction of coal and gas outbursts are built. Making advantage of the developing tool of SuperMap Objects, an integrated system based on GIS for mine gas disaster prevention...
The Barn project, a spatial data grid prototype under development currently, provides a grid environment for applications of the nationwide geological survey data. Within Barn, in order to reduce data access latency, avoid a single point of failure, and increase the performance and load-balance of the system, we have designed and implemented a set of replica management services. These services, based...
Spatial Data Grid allows for solving larger problems and executing applications that traditional Web GIS (Geographic Information System) can not handle efficiently. The purpose of this paper is to design and implement a new mechanism to organize miscellaneous Vector Map Services, built on GT 4 (Globus Toolkit 4), and based on WSRF (Web Services Resource Framework). In this paper, we illustrate the...
Spatial data grid allows for solving larger problems and executing applications that traditional Web GIS (Geographic Information System) can not handle efficiently. In spatial data grid, all functions of GIS are encapsulated as stateful Web services. The purpose of this paper is to design and implement a new mechanism to organize miscellaneous vector map services, built on GT4 (Globus Toolkit 4),...
The Barn project, a geospatial data grid prototype, provides a grid environment for applications of the nationwide geological survey data. Barn is developed based on the Globus Toolkit. Through Web portal, users can manage the grid resources, perform browsing, querying and analysis against the spatial data. According geospatial application nodes are organized into application domains. The node management...
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