In light of the specific circumstances and the analysis of observational data of Mianhuatan dam,the safety monitoring index of horizontal displacement at the top of 2#,4#,5# typical dam section is determined by means of confidence interval estimation method,typical small-probability method and structural analysis.

The safety-monitoring index of seepage was determined by use of the typical low probability method,and the impermeability of the dam body and its foundation was analyzed through comparison of measured data with the index value.

Based on analysis of Gutian River First Stage Dam s prototype observed displacement data,this paper applied typical low probability method and confidence interval method to study the safty-monitoring index of crest horizontal displacement of No.

,it is proposed that the maximum takes monitoring indices of the structural analysis method and the minimum takes the result obtained by the typical low probability method.

Throug h defining collision probability,minimum feasible probability and tiny probability,authors analyze the real-time property of Ethernet with lig ht load,and point out 3factors which influence the real-time property.

Based on recent findings in behavioral economics, the authors demonstrated that when the difference in outcome values reduces, disappears, or is no longer apparent, an alternative with a small probability is less likely to be overweighed.

Temperature error model identification of laser gyro based on minimal probability DWO;

Bandwidth selection of direct weight optimization with minimal probability and temperature error model identification of laser gyro