Distributed computing is a kind of computer science, which studies how to divide the enormous task into several smaller tasks, and then assigned many computers with these sections, finally integrate the final results of these calculations. Distributed computing is different from parallel computing, it requires processing tasks independent of each other, even if an error
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The Postal Banking & Securities System (PBSS) is a new cooperation pattern between Post (Saving) and Security Companies. According to the practical situation, in the thesis we have proposed and realized a Banking & Securities System, which is based on the multilayer network structure. The system can meet all kinds of complicated service request through
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Intrusion detection technology is another security guaranty technology after “firewall”, “data encryption” or other traditional security protection way.It can recognize illegal action happening on computer or network,and can not only detect intrusion from outside but also supervise internal unauthorized action,which is applied broadly in network security area.For current Intrusion detection System(IDS) is not so advanced
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As the Internet flow and scale continuous increase, the performance requirements of routers is getting higher and higher. Centralized control plane in is ForCES-based router suffer certain limits, such as storage and computing power. Therefore, it is difficult to meet future network demand. So, it is significant to study distributed routing protocols to improve control
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Resources access control （AC） is an essential defensive measure against a large number of security attacks. Under distributed environment, use of middleware technology is one common method to support access control, but it also incurs some problems to be overcome for the method to be fully effective. 1) It does not offer a complete solution,
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Job shop scheduling is one of most complicated combinatorial optimizationproblems and has profound practice background and wide application foreground.Because of ignoring many actual constraints to simplify computation complexity, atpresent scheduling theory research doesn’t satisfy the practical application demand.Therefore, it’s more significant in theory and valuable in engineering to study the jobshop scheduling close to the
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