In the new century, the use of force by regional organization is more conspicuous.

How can a regional organization face a civil war in its member state? Upon the question, many people praised the action of ECOWAS in the Liberian civil war.

Under the UN charter,there are three kinds for regional organization to use force.

The application of complex networks theory in organization networks study;

To find out the current situations on the construction and function of the rehabilitation institutions in Shanghai,an expert appraisal method was applied according to the first-degree index-organization networks of "the Evaluation Index System of Rehabilitation Service for All Disabled in Shanghai".

By investigating into the present developing condition of sports community organization networks in Guangdong,the author analyzes the present situation and the function of the service on the mass sports community,then some corresponding advice are proposed.