In order to achieve better filtering performance,a muti-level and multi-policy active information security filtering model which based on the two-layer filtering model was built through combining network physical level filtering and security filtering which based on content,the model can further improve the efficiency and quality of security filtering.

This paper mainly analyzes the security problems existing in the model of active information service in campus-net and several commonly used security filtering methods,introduces an active information filtering model based on content,which is expected to improve the security of campus-net further.

A designing model of a hierarchy information sharing system with active information sharing functions is presen.

Active information sharing (AIS) technology is a new information management and transfer technology.

Design and implementation of an active information service system;

Design and realization of active information service based on Push technology;

Research on Active Information Service and It s System Design;

The concept and the characteristic of mobile agent in wireless sensor network are introduced, and the basic principle of active message communication model is analyzed in TinyOS, Furthermore, scheme to realize mobile agent variation in TinyOS is provided.