Study and Simulation of Railway Safety Guarantee Technology;

The Performance Optimization and Safety Guarantee of Mobile Intelligent Network Products;

Based on the current and future situation of civil aviation safety management in China,this paper describes the theoris and the technology systems of the accident prevention,the accident rescue and the safety guarantee,which makes the research of civil aviation safety investigation systematic,theoretic,standard and sustainable.

Agricultural protection is the necessity to remove the agricultural risks and realize the largest agricultural security guarantee;

For the actual need of the transit lines security in Sichuan Province, transit lines security guarantee system for Sichuan province, which is based on GIS technology, has realized the store and management of transit lines and different disaster information along the lines.

Lack of network security guarantee is currently worried by the people around the world.

Safeguard and Evaluation of Water Resources in Zhejiang Province;

Evaluation of the Safeguard of Cultivated Land Resources in Shandong Province;

This paper predicts the supply and demand of cultivated land and analyzes the safeguard of the cultivated land and problems in the demand of cultivated land in the future,establishes the index system of safeguard evaluation of cultivated land, and evaluates the safety state of cultivated land i.