Survey and Analysis About Information and Cause of Death on In-Service Policeman in Tianjin City;

Psychological adjustment and control of police's pistol shooting competitions

The police are the concrete lawman of the Public security organ,with defending the people\'s life and the property security,the maintenance of social justice,the promotion of social justice,and the maintenance of legal sanctity sacred missions.

The prevalence of metabolic syndrome and related diseases in policemen in Hami City

[Objective] To analyze the health status of policemen in some towns of He\'nan Province,and to find out the potential threats to their health and the related factors so that evidences for preventing or treating the diseases can be provided earlier.

GMS2300 wireless anti-theft and safety alarming and monitoring system for oil and gas wells.

So by means of the frequency-domain analysis, the character of alarming signal can be deduced and used in the system of portable safety alarming system of train approaching.