It conducts 7 sets of indoor tests for studying the influence of gulley constraint to the fan-like accumulation formation of mud-rock flow.

The moral restriction principles abided by early enterprises should be replaced by system restriction after the development of family enterprises and change of property rights, which leads to transformation of enterprises’ trust mechanism.

It leads some parts of scholars not only scarcity law criterion, but also abandon moral restriction, these actions induce bad effect to academia and society.

A Method of Orbit Restrain Self-Calibration and Direct-Computing Orbit Elements for Orbit Determination;

A new algorithm is developed to incorporate the road constraint into a Kalman filter.

Using the road network as filtering constraint condition,a dynamical system model with road constraint is built and the corresponding robust H∞ filtering equation is derived.

The Moral Restraint of Public Administrative Service;

The paper analyzes the social attribute of scientists, the motivating meaning of moral restraint on scientific & technological creation, criticizing the immoral behavior in scientific research and the wrong viewpoint that science & technology workers shouldn t be restrained by morality rules.