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As the application fields of spatial information system continue to expand, different sectors in different fields are in desperate need of spatial data sharing to reduce the expenses of spatial data acquisition and to enhance its utilized efficiency. And spatial data interoperability is an effective approach to solve this problem. The present paper proposes a grid collaborative model for spatial data...
A combined scheme of individual encryption and watermarking is presented to protect the copyright of the video programs on the public networks. The video program file is split into two files, one is the key file composed of DCT's DC coefficients in I-frames, and the other is a normal file composed of the rest. Then the watermarked key files are produced by embedding every user's identity into the...
Parallel debugger is crucial for improving the efficiency of parallel programming development. Parallel debugging interface is the basis of parallel debugging. This paper puts forward a parallel debugger design method of a new interactive, Internet-oriented, extensible parallel debugger framework based on the research of a number of parallel debugging interfaces' design methods and advantages and...
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