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In this paper, the problem of improving the secrecy communication for a cooperative jamming based network in which there is a friendly jammer, an eavesdropper and N pairs of sources and destinations is addressed. A Stackelberg game is formulated to tackle the joint utility maximization of the jammer and sources subject to a maximum jamming power constraint at the jammer. In this game, the jammer behaves...
In distributed heterogeneous scenarios, querying data from various sources efficiently and concisely is always a key challenge. In this paper, we analyze the characteristics of hydrological data and study the data integration in grid environment. We propose a query processing procedure based on domain topics and grid infrastructure. Domain topics are defined according to domain query patterns, and...
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