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This paper proposes a geospatial web portal for the Tibetan Plateau ecological safety data services based on web services, portal technology and GIS technology. It serves as an online data supporting platform for geospatial data integration, management, submission, publishing and sharing. Its framework presents a three layer architecture consisting of data resource layer, data service layer, data...
Privacy is considered to be a critical issue for providing high quality ubiquitous network services to users over the Internet. User's privacy should be protected and access to privacy information must be controlled in accordance with user's privacy preferences. Existing privacy-aware access control strategies often store all the privacy access control policies on the server side and thus fail to...
Privacy protection is a very important issue and solutions must be developed for wide acceptance of location based services (LBSs) in wireless applications. Current approaches rely mostly on the use of privacy policies to describe and solve this problem in an ad hoc way. In this paper, we propose a method based on the three-dimensional access control model to support privacy requirements. We show...
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