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Grids are likely to be the mainstay of distributed computing. Efficient Resource discovery mechanism is one of the fundamental requirement for Grid computing systems. Peer-to-peer organization of Grid resource discovery services would have several desirable features, including high scalability, high reliability, self-organization and self-healing, we propose a multi-agent based peer-to-peer approach...
With highly dynamic, structured P2P system needs very large maintenance cost. But there is little research on this kind of maintenance. This article focuses on reducing maintenance cost of structured P2P system and proposes a clone node protocol, CNP for short. We realize a new system based on vxusing CNP, i.e. CNChord. CNP can reduce maintenance cost greatly, and improve query efficiency at some...
The peer-to-peer (P2P) systems have many applications due to their virtues: high scalability and low cost. The systems using super-peers (SPs), which deal with all queries, instead of ordinary-peers (OPs), run more efficiently. So how to choose SPs from all peers is a key, but also a difficult problem because of the systems' heterogeneity and dynamic. In this paper a novel mechanism for the selection...
Tor is the second generation onion router, supporting the anonymous transport of TCP streams over the Internet. Its low latency makes it very suitable for common Internet communication applications. So Tor has become the most successful public anonymity communication service in the Internet. In this paper, we investigate Tor current circuit-building protocol. We found some performance and user experience...
Considering servers being the core position in network, this paper introduces how to monitor servers through simple network management protocol (SNMP). We expand MIB resources by defining MIB objects to monitor the resources of sever, and use multi-threading technology to collect data and process them, which can improve the collection efficiency. The experimental results prove that it is a successful...
In recent years, as the development of wireless sensor networks, people do some deep research on cluster-based protocol, most about the prolongation of the lifetime of WSN and decline of energy consumed by the sensors .This article analyses the cluster-heads generating algorithm among LEACH and presents improved approach that adjusting the nodes, threshold function. When non cluster-heads choose optimal...
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