This paper introduces an approach of calculating the rolling frequency of vibrating rollers with mathematics method and based on energy theory and in accordance with the vibrating rollerearthwork system dynamics model.

In recent years,the most attractive phenomenon in traffic accidents is "re-crush",which causes extensive and heated discussion in a society.

Vehicles crashing accident reconstruction model based on lamp debris distribution field;

Computer-aided visualization of accident reconstruction;

Research on the Theory Model and Method of Accident Reconstruction;

Study in the relation between fatigue of coalminers and coalmine accidents in China;