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In recent years, investigations on ad hoc networks have received considerable interest due to its capability to deploy quickly without any infrastructure. And with the development of mobile terminal, mobile CSCW gradually becomes the developing direction of CSCW. The ad hoc networks' characteristics and the traditional CSCW's sharing mechanism are introduced at first. And then put forward the theory...
In this paper, we address the problem of collaborative video caching in mobile ad-hoc networks. We consider network portraying static video server with wired interface to gateway node that is equipped with wireless interfaces, other nodes are requiring access to the video streams that is stored at video server. In order to reduce the average access latency as well as enhance the video accessibility,...
Smartphones are getting increasingly popular and several malwares appeared targeting these devices. General countermeasures to smartphone malwares are currently limited to signature-based antivirus scanners which efficiently detect known malwares, but they have serious shortcomings with new and unknown malwares creating a window of opportunity for attackers. As smartphones become host for sensitive...
Decentral recommender systems appear well suited for mobile scenarios, but have not been investigated thoroughly or implemented very much so far. We have designed and implemented a system to recommend images on personal digital assistants (PDAs). Our approach also incorporates recommending for groups of users that are present at a public shared display. The system exchanges rating vectors among PDAs,...
As the inherent defects of the client-server model, the dependency on the server profoundly confines the system's scalability and seriously clashes the reliability and security of the system. This situation grows into more serious when numerous peers involved in a multiparty IM session. To remedy these deficiencies, this research probes the prospects of using P2P networking paradigm in the multiparty...
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