Three methods of applying network copy program to software system s fast installation and recovery of LAN computer lab to improve software maintenance efficiency are introduced.

A fast convergent algorithm for computing the trust value in peer-to-peer networks;

Load balancing Peer-to-Peer network architecture for VoIP applications;

From the view of connection reliability of transport networks,and having analyzed the estimating method of the reliability,a determined method for the path set and cut set of an OD pair was presented,with which the n-shortest paths in the original network and its dual network could be determined.

Integration exchange network technique based on peer to peer;

A selection algorithm for data pieces in peer to peer networks

A kind of systematic structure for a multi function interactive information terminal based on peer to peer network is brought forward in allusion to the obstacles and problems for information interaction in the middle and bottom of the networked manufacturing system.