Abstract:We introduee C-conmections and show that the category of C-lattices and the lower adjoints of C-connections is equivalent to that of T_o topologieal spaces and con-tinuous mappings.
Abstract:We study in this paper the properties of a kind of B-differentiable func-tions derived from biobstacle problems with nonlinear mappings.It is shown that thedamped Newton method for relevant nonlinear system is globally convergent.
Abstract:In this paper,We study the oscillations of first order delay differential equation New sufficient condition for oscillations of solutions is obtained,Which improves the known results.
Xie Naixian Huang Yixiang Xie Bin Guan Xu Feng Jinqiao
Abstract:s Studies on the equilibriums of polysulfide ions in DMF-DMSO mixedsolvent by spectrometric method have been made and it has been shown that the decom-position of polysulfide ions is favourable when apparent concentrations are decreased ei-ther in the sol
Liu Rangsu Li Jiyong Wang Lingling Ouyang YuJian
Abstract:In this paper,the processes of structural relaxation of amorphous Ni-Si-B system alloys have been studied by means of measuring the changes of elctrical resis-tivity of them after isochronal annealing at various temperatures,and the oscillatingcurves rela
Abstract:We obtain several sufficient conditions for the oscillation of certain classes of higher order linear neutral differental equations. Our results improve many knownresults in the literature by relaxing the conventional hypothesis for a divergent infinitein
Abstract:本研究一类定义在单位圆周上带有两个时滞的纯量反应扩散方程,在一定条件下,我们证明了方程在鞭平凡解处的线性化有一对简单的纯虚特征值±iω1,和一对重的纯虚特性值±iω2,且是非共振的(即ω1/ω1是无理数),然后,应用[3]的中心流形的方法得到了一个六维常微分方程,用它来刻划方程在其平凡解邻域内的解的渐近性态。
Abstract:本文提出一种新的疗效分析法-加权分析。由于此法吸取了疗效程度差异的信息,因而能更科学,更有效地鉴别各种治疗方法(对同一种疾病)疗效的优劣,本文还提供了衡量疗效的加权均值理论值的点估计和区间估计-即预测疗效的置信区间。
Abstract:In this paper we explained the machanism of laser induced plasma andthe action of laser induced plasma in the process of laser beamworkpice energy coupling.We discussed physically on plasma oscillation and inverse bremsstrahlung absorption.We obtained for
Abstract:本文以连续损伤力学理论为基础,根据J.Lamaitre(1971)提出的“应变等铲性假说”,利用“利帕托夫强度理论”作为破坏准则,建立了各向同性损伤模型,并运用这一模型对混凝土材料的Pfeiffer和Bazant试件在直剪和压剪载荷作用下的损伤发展过程进行了数值模拟,并与SESWARTZ和NMTAHA实验结果作了比较,二者比较吻合,初步表明了本模型的有效性。
Abstract:The acoustic emission technique was used for the study of ceramics inthis work.The dynamic process of crack growth in ceramics under thermal stress wastested accurately by a acoustic emission testing system which consisted of transducer,pre-amplifier,filt
He Lipin Wu Chengbao Chen Hongxun
Abstract:The paper gives quantitative analyses of dynamical parameters in an au-to-regulating and auto-forming plug flow pneumatic conveying system firstly.The results show that the pressure drop proportions with plug length at a certain plug velocitylinearly. But
Abstract:This paper presents a neural network intelligence PID control systemand describes the effective learning algorithm based on the conjugate gradient.Resultsof simulation and application show that the intelligent controller can be used for unknown dynamical
Abstract:Based on Rouche's theorem,his paper presents some sufficent condi-tions for the robust stability of a special kind of polynomial with multilinear parameterdependence. These criterions have simple forms and are very easy to apply. In somespecial stuations,
Abstract:In this paper,the couse of false trip of logic conrroller in logic controlled no cirrulating current convertible system on running no-load is analysed.The relationbetween some static parameter setting and safe conversion of two thyristors is obtained,and
Zhou Zhiren Wan Jiqing Cheng Diping
Abstract:In this paper architecture of 1MB EPROM with special reading and writing method and key logic design is given. Self-encryption of 1MB EPROM can be realized effectively through using techniques of one dip with MuIti-functions and function ex-changing betwe
Wang Jinzhi Jiang Ronghan Li Desheng Qiu Shiyi Wu Zhiqiang Gong Dean
Abstract:The defects in the reliability concerning the circuit configuration,component quality and operation management of a representative electrrical distribution systemare analysed.The reliability data of the domestic and foreign electrical distribution systems
Abstract:According to the tested dsta and waveforms the dynamic characteristicsof emulation model for governing system are analysed.basic law of dynamic charac-teristics under influence of governing parameters is summarized.Then the emulation ofnegative-going char
Abstract:In this paper the principle and availability of a new technology of quicklypreparing shell molds by washing the solided shell molds with water replacing the tradi-tion 1 technology of natrual drying are described.The predeterminate effect of the newtechno
Abstract:In terms of the characteristics of building structure,a new kind of dynamical substructure method is presented in this paper.The proposed method is especially suitable for analysing the dynamical reactions of building structure using mini-computer.
Abstract:本文讨论了指数n变化的g^n快速计算问题,用存贮一些特定的值的方法(预处理方法)减少了乘法的次数,同时给出了并行快速算法。