Statistical energy analysis(SEA),based on the vibration and diffused noise experiment of an underwater double ribbed cylindrical shell,is applied to a vibration and radiation model and a grey prediction model to identify a system's SEA parameters according to experimental data.

Nonparametric statistics method is used to measure the regional testing data of group 1 corn hybrid strains of Henan Province, the density of which is 4000/667m~2.

Therefore,it is better described by a bi-particle graph and two more important statistical parameters, act-d.

The effect of energy parameters on the thickness and corrosion resistance of micro-arc oxidation coatings on magnesium alloys was studied in silicate aqueous solution with a home-made micro-arc oxidation current source.

Basing on conventional sounding information,this paper analyzes the stability and energy parameters in a short-time rainstorm which occurred in Zhengzhou on August 25,2006.

The adhesion of the ceramic film to the Al alloy substrate was evaluated using adhering-tearing test of adhesive tape and metallor-graphic residue stress test,while the effects of energy parameters including temperature,duty cycle and voltage on the adhesion of the black MAO ceramic film were investigated.

Based on carbonization,corrosion expansion and crack width,the analysis methods of time-dependent reliability and relative statistic parameters were proposed.

According to the principle and character of genetic algorithm,which asks for best in this arithmetic,the method adopting genetic algorithm to estimate statistic parameter of Pearson Ⅲ distribution was put forward.

Adopting the statistic parameter in《The reliabiliby of port engineering structures》, this article calculate and analyze the reliability index of difference reinforced concrete members.