Abstract:An analysis of the dynamics of thin elastic plate in large overall motions is presented.Using the method of multiple scales,the bifurcations of a simple supported thin elastic plate in large over all motion under combined parametric and forcing excitatio

Abstract:制备了邻菲口罗啉化学修饰碳糊电极，在含噻吩甲酰三氟丙酮的ＨＡｃ－ＮａＡｃ体系中，Ｃｏ（Ⅱ）离子经化学富集在电极表面上形成三元络合物．采用２．５次微分伏安法测定痕量Ｃｏ（Ⅱ）离子．Ｃｏ（Ⅱ）浓度在８．０×１０－９～７．０×１０－７ｍｏｌ·Ｌ－１范围内与阳极溶出峰峰高成良好的线性关系，检出限达１．２×１０－９ｍｏｌ·Ｌ－１．电极用于水样中钴的测定，结果令人满意．

Abstract:By means of computer,Appel K and Haken W came to the conclusion that the four colour conjecture is true.But one always wishes to find the reason for the proof of the four colour conjecture.By means of flat graph not plane graph,using an elementory metho

Abstract:The new sufficient conditions for the oscillation of all solutions of the neutral differential equation with continuous and piecewise constant arguments are obtained.The results improve and extend some known results in the literature.

Abstract:The problem on the structual reliability under non linear limit state equation concerning related normal random vector has been solved by presented first order second moment method.The feasibility of this method is deduced thoretically and the effectiv

Abstract:The theorey of energy spectrum in the sdIBM1 derived by the 1/N expansion technique in the consistent Q framework with high order modified terms are applied to the study of the energy spectra of the 5 medium and heavy nuclei.A great deal of experiment

Abstract:A new method on synthesizing ammonia,heat equilibrium low temperature plasma method,is introduced.This method is simple,easy to conduct and can save energy and natural resources.It may probably open up broad prospects for the ammonia synthesis industry.

Abstract:The wettabilities of Cu Cr alloys with flexible graphite and artificial carbon were tested with the method of the specific contact area of sessile drop.The specific contact areas of sessile drops with carbon(graphite)materials increase and the contact an

Abstract:A blood coagulation process is accompanied by characteristic changes of crystal surface mass,viscoelasticity and stress.According to the rules of variation of piezoelectric parameters,and noting the fact that the most sensitive part of a piezoelectric sen

Abstract:The electrochemical behavior of Ti electrodes modified by four kinds of ion beam was investigated in 1N H 2SO 4.Ion implantation and ion sputter were adopted.The ions of beam include active elements for hydrogen evolution such as W,Ni and Fe.Compared w

Abstract:讨论了连杆机构弹性动力方程的各种求解方法，提出用样条函数配点法求解高速机构的动态响应，推导了其闭式解法有关公式，通过解算一四连机构的说明此方法有效性。

Abstract:Fuzzy logic and neural network controller and their applications in an electro hydraulic servo position system are discussed.Based on these above,a comprehensive intellegent controller is proposed.Simulation and experiment results show that the controlle

Abstract:A new control method of neural network adaptive control based on direct model reference is presented and is applied to the position control of an electrohydraulic servo system in a lab.And neural network control has been blended together with sliding mode

Abstract:After analizes some disadvatages of the traditional design methods of CIMS on the atomation subsystem design,the O O(Objected Oriented)concepts and some O O design rules are given.The O O frame of the automation subsystem of ZN CIMS is presented,and

Abstract:A realization of digitized system of direct torque control was presented for permanent magnet synchronous motor.A hysteresis control technology was used in current regulator,the frequency of current regulator was nearly 10 kHz,this provided favorable cond

Abstract:Through the analysis of information flow of HVAC design,the system construction,data model and its design mehtod,management system and software resource of engineering database of integrated HVAC CAD development environment are researched.

Abstract:A new subjectenvironmental biotechnology is developed with combining modern biotechnology and environmental science.On the basis of modern technology of microorganisms screening,cultivating and genetic engineering and application of high performance new t

Abstract:Based on the analysis of system and system analysis method,the definition,principal content and basic character of gray system analysis method are discussed at full length.The situation at home and abroad of solving building heat and moisture loads is pre

Abstract:The model developed by Vlasov and Leont'ev is refined,and the static control equations are presented.The iteration method and the Galerkin theory are used to solve the equations.At last the results are compared with the theoretical results got from the ot

Abstract:采用有限元和动态Ｊ积分相结合的方法，首次精确地计算了四点弯曲试件的Ｋｉ（ｔ）Ｋ（ｔ）的值，获得了各种复合比时Ｋ１（ｔ），Ｋ（ｔ）的关系曲线，并提出了一种确定Ｋ１ｄ和ＫＩＩｄ的方法，对提出的算法程序进行了验证。

Abstract:According to the practice of ZN CIMS project,the characteristics of the information integration in the process industry,the system design and the developing strategy are analysed.Based on the CIMS architecture and propping environment,the information int

Abstract:The principle of constructing client/server system by using ODBC in VB is introduced,different ways to access ODBC database such as Direct,Attach,DAO and DC are analysed and compared,and several brief examples are showed.

Abstract:ARCH model,autoregressive conditional heteroskedasticity,is a model for time sequence analysis which developed after 1982.Based on the analysis of data character in finance markets,the form and classes of ARCH,its parameter estimation,hypothesis test,and