five-element
4.An effective way for analyzing electronic circuits by Monte Carlo statistical stimulation is described, It includes the stochastic sampling of five common distributions of the element value, the establishment of stochastic circuit equation, the stochastic sampling of m-dimensional vector of components, the analysis of reliability, the statistical distribution of the output within the value range, aud the method to derive the probability density function (PDF).
5.Based on the pilot studies on the evaluation index system and the method of sustainable development on Loess Plateau,this paper has designed the structure frame of the index system including three types of index including one advanced comprehensive index-the comprehensive index of sustainable development,five basic indexes and thirty element indexes,the Analytic Hierarchy Process which can be used to calculate the sustainable development index weight supported by entropy technology.The model can be used to evaluate the sustainable development of Loess Plateau comprehensively integrated by mathematical method such as compositive appraisement method of hierarchy multilayer、main component analytical method、regression analytical method and so on.Pilot study on the index system has been carried out on the Leoss Plateau of the Northern Shaanxi,and the results is promising.
6.The five-stage sequential extraction procedure is applied for element composition and phases in atmosphere aerosol and aerosol supplied by International Atomic Energy Agency(IAEA). Instrumental Neutron Activation Analysis(INAA) are used to determine the elemental composition of dissoluble phase, carbonate phase, oxide phase, organic phase and indissoluble phase. Distribution proportions and Enrichment Factors (EF) of elements in five phases are calculated.
7.It has been analyzed the vibration status and energy response of a five-floor shear structure with and without FPS isolator using the finite element program.
8.Simulating the course of dynamic construction of large-span tunnel on geology condition of five-grade rock mass and deep-bury by finite element programming,the excavation effect of CD method is comapared with the effect of CRD method obased on safety of the rock mass around and preliminary lining and temporary lining.
