Wang Fayi’s research while affiliated with Shenyang Agricultural University and other places

Flooding is the base of unstructured P2P(Peer to Peer) systems, such as Gnutella. Pure flooding mechanism doesn't be used in practice for a great amount of redundant generated during query propagated among network. Studies show rates of redundant messages generated are not equal in different stage, as the distance of the query propagated increase, the number of redundant message exponential growth. In this paper, we propose a search algorithm base on peers division to reduce redundant amount and retain the scope to propagate. Analysis of the key indicators shows it efficient in P2P searching.

The code design is the key of maintenance distribution network topological structure in the spatial database. This paper has analyzed the characteristics of distribution network topological structure, discussed the problems of traditional level type code in describing power distribution network topology, and designed a new distribution network topology code based on GUID (global unique identifier). That code generates automatically by the system. It can build and maintain distribution network topology in the spatial database, realize various of Web search. Practical examples show that web search based on the code can be stable and efficient used in distribution network GIS computing and analysis.