Many changes have been taking place in the objective enviroment of public security work in mountain areas in the new century,such as the aspects of (1)the situation of public order,(2)the enviroment of enforcing the law,(3)requirement of service,(4)the feature of police force,(5)and the mechanism of guarantee.

On the public security work and the mass line;

Carrying out the public security work around strengthening the construction of the Party s ability to hold power;

Discussion on feasibility of application of satellite aerial photography to the public security work;

On the Building of the Contingent of Public Security Work and Innovation Public Security Work and Building of the Police Contingent——A View from Public Security Station in Huining;

Study on Yunnan Minority Nationalities Custom Taboos and Public Security Work;

Police work and police education is not the relation of leader and being led or practice and theory,but the relation of developing resources and nourishing each other;the deep and leaping development of police work should depend on police education.

It is decided by the quality of police work to establish steadily"take people as the basis"idea.

Emerged in social throughout, folk customs does a lot to police work.

This paper has given several experiment circuit about safe operating area protection in low-voltage-difference stabilizer .

This paper describes the operational characteristics of vehicles at two - lane highway work-zones and the model of motorist delays.