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The multi-regional economic network model has recently been constructed to describe open economic systems and to study the strength of fluctuation in open economic systems. While our previous studies focused on a completely connected topology, here we address a topology with a community structure. We find that in such a economic network with the community structure, an open system suffers more fluctuations...
This paper integrates grid technology and OGC compliant services to design and implemented a geospatial Web service platform for the western region's surveying and mapping project. It can make use of OGC common services and interoperability interfaces to supply efficient and secure data management, publishing and inquiries in the heterogeneous computer environment and as well as multi-scale seamless...
The ontology has an important role in the sharing and interoperability of geographic information and services. At present, the ontology merging usually needs people to participate in. To avoid this insufficient, this paper studies the model of ontology merging at first, and then gives an approach to merge ontology automatically. The core idea of the approach is, firstly, use the ontology similarity...
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