Howerer,it has also exposed one and another defects since the international situation has changed,so it is difficult to achieve the goal of UN collective security system.

The new world order designed by him is the collective security led by the United States, which is different in nature from that of Wilson.

It has,at least,the following impacts: compensating,to a certain extent,for the inadequate UN collective security mechanism,enhancing the UN efficacy in maintaining peace and security,creating an UN "peacekeeping operation" mechanism,launching an UN emergency session which is helpful to the containment of hegemony and the realization of democratization in internat.

In the 1930s ,proceeding from its own interests,the Soviet Union tried to set up a European Collective Security System to get rid of the menace of Nazi Gemany.

The Modeling of Security System in PDM;

On the establishment of practical and comprehensivenetwork security system;

R&D of a security system for enterprise s public bidding management system;

Collaboration-oriented security architecture & technologies in grid-based manufacturing pattern;

Research on security architecture and security technologies for collaborative commerce and design environment;

The design on the security architecture of public WLAN based on access controller mode;