It is a primary summa on the design of regional system security automatic device, which is divided into four main parts: system research, stability calculation, security automatic device arrangement, and communication channel organization.

Regional plan is not only a process of controlling the regional system, but also a process of collecting and dealing with the information.

A hierarchical system, which is formed by division or combination of natural features based on geographic relativity and comparison of major ecosystem factors and geographic zonality, is called eco-geographic regional system.

Research on Secure Management of Trust Values in Decentralized P2P systems;

A efficient P2P system based on three-layers clustered architecture

Interaction trust model based on strength of relationships in P2P system

In structured P2P systems, the topology of underlying physical network is not considered on building logical overlay, whose route mechanism is designed from nodes border upon logic, so neighboring nodes in physical network have large delay.

In DHT-based P2P systems, DHT and the heterogeneity of node capacities can cause a load imbalance problem.

This paper gives a comprehensive research on the development of current P2P systems, especially those of routing, file storage and load balancing mechanisms in four typical P2P file storage systems.