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Species Permanence Analysis of an Ecological Model with an Impulsive Control Strategy

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Journal of Mathematical Research and Exposition 2011年第6期31卷 1035-1046页

作者： Xiao Mei WANG shou ming zhong School of Mathematics Sciences University of Electronic Science and Technology of ChinaSichuan 610054P.R.China Key Laboratory for NeuroInformation of Ministry of Education University of Electronic Science and Technology of ChinaSichuan 610054P.R.China

In this paper,on the basis of the theories and methods of ecology and ordinary differential equations,an ecological model with an impulsive control strategy is *** using the theories of impulsive equations,small amplitude perturbation skills and compar-ison technique,we get the condition which guarantees the global asymptotical stability of the prey-x-eradication and predator-y-eradication periodic *** is proved that the system is ***,numerical simulations are also illustrated which agree well with our theoretical *** these results may be useful in study of the dynamic complexity of ecosystems.

关键词： impulsive control strategy locally asymptotically stable complex dynamics peri-odic solution.

Augmented Lyapunov Approach to Exponential Stability of Discrete-Time Neural Networks

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Journal of Mathematical Research and Exposition 2011年第3期31卷 479-489页

作者： Zi Xin LIU Shu LU shou ming zhong Mao YE School of Mathematics and Statistics Guizhou College of Finance and Economics Guizhou 550004 P. R. China School of Mathematical Sciences University of Electronic Science and Technology of China Sichuan 611731 P. R. China School of Computer Science and Engineering University of Electronic Science and Technology of China Sichuan 611731 P. R. China

This paper addresses the problem of robust stability for a class of discrete-time neural networks with time-varying delay and parameter *** constructing a new augmented Lyapunov-Krasovskii function,some new improved stability criteria are obtained in forms of linear matrix inequality（LMI） *** with some recent results in the literature,the conservatism of these new criteria is reduced *** numerical examples are provided to demonstrate the less conservatism and effectiveness of the proposed results.

关键词： discrete-time neural networks robust exponential stability delay-dependent criterion time-varying delay.

Robust Non-Fragile Guaranteed Cost Control for Nonlinear Time Delay Discrete-Time Systems Based on T-S Model

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Journal of Electronic Science and Technology of China 2007年第2期5卷 153-158页

作者： Yu-Ping Zhang Hong Zhu shou-ming zhong School of Automation University of Electronic Science and Technology of China （UESTC） Chengdu 610054 China School of Applied Mathematics University of Electronic Science and Technology of China Chengdu 610054 China

This paper concerns the robust non-fragile guaranteed cost control for nonlinear time delay discrete-time systems based on Takagi-Sugeno （T-S） model. The problem is to design a guaranteed cost state feedback controller which can tolerate uncertainties from both models and gain variation. Sufficient conditions for the existence of such controller are given based on the linear matrix inequality （LMI） approach combined with Lyapunov method and inequality technique. A numerical example is given to illustrate the feasibility and effectiveness of our result.

关键词： Guaranteed cost control linear matrix Inequality non-fragil e control robust control T-S model.

Design of Dynamic Controller for Neutral Differential Systems with Multiple Delays in Control Input

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Journal of Electronic Science and Technology of China 2009年第2期7卷 165-170页

作者： Zi-Xin Liu Shu Lu shou-ming zhong School of Applied Mathematics University of Electronic Science and Technology of China Chengdu 610054 China and School of Mathematics and Statistics Guizhou College of Finance and Economics Guiyang 550004 China. School of Applied Mathematics University of Electronic Science and Technology of China Chengdu 610054 China

The design feedback controller for a problem of dynamic output class of multi-delayed neutral systems has been considered. A criterion for the existence and asymptotic stability of such controller is derived via defining a new integral operator. The criterion is expressed in terms of the linear matrix inequalities （LMIs）, which can be checked numerically using the effective LMI toolbox in MATLAB. One numerical example is given to illustrate the proposed design method. Numerical simulation shows that the new design method is valid.

关键词： Index Terms-Asymptotic stability dynamiccontroller Lyapunov method time delay.

Stability of a Class of Neural Networks with Asymmetric Connection Weights

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Journal of Electronic Science and Technology of China 2008年第3期6卷 346-349页

作者： Xiu-Zhi Gao shou-ming zhong Bing-Tao Wang School of Applied Mathematics University of Electronic Science and Technology of China Chengdu 610054 China School of Mathematics and Computational Science Xiangtan University Hunan 411105 China

This paper derives some sufficient conditions for exponential stability for the equilibrium point by dividing the state variables of the system according to the characters of the neural networks. The new conditions are described by some blocks of the interconnection matrix. An example is given to demonstrate the effectiveness of the proposed theory.

关键词： Asymmetric connection weights exponential stability Lyapunov functional neural networks

HHStability analysis of fractional order systems

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HHStability analysis of fractional order systems

Highly coupled off-resonance lattice design in diffraction-limited light sources

The Sixth International Conference of Matrices and Operators

作者： Hong Li shou-ming zhong Hou-biao Li School of Mathematics Sciences University of Electronic Science and Technology of China

＜正＞In this paper,a stability test procedure is proposed for linear fractional order systems with the fractional commensurate orderα（1＜α＜2） via eigenvalues inequality and linear matrix inequality（LMI） approa... 详细信息

关键词： linear fractional order systems eigenvalues inequality linear matrix inequality(LMI)

来源： cnki会议评论

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Nuclear Science and Techniques 2024年第9期35卷 92-102页

作者： Yi-Hao Gong Shun-Qiang Tian Xin-zhong Liu shou-Zhi Xuan Li-Yuan Tan Ling-Long Mao Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204 ShanghaiChina Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 ShanghaiChina University of Chinese Academy of Sciences 100049 BeijingChina

The round-beam operation presents many benefits for scientific experiments regarding synchrotron radiation and the weak-ening influences of intra-beam scattering in diffraction-limited synchrotron light sources.A round-beam generation method based on the global setting of skew quadrupoles and the application of a non-dominated sorting genetic algorithm was pro-posed in this *** schemes,including large-emittance coupling introduced via betatron coupling and vertical disper-sion,were explored in a candidate lattice for an upgrade-proposal of the Shanghai synchrotron radiation *** variations with lattice imperfections and their influence on the beam dynamics of beam optic distortions were *** results demonstrated that a precise coupling control ranging from 10 to 100%was achieved under low optical distortion,whereas full-coupling generation and its robustness were achieved by our proposed method by adjusting the skew quadrupole components located in the dispersion-free *** Touschek lifetime increased by a factor of 2–2.5.

关键词： Diffraction-limited storage ring(DLSR) Shanghai synchrotron radiation facility upgrade(SSRF-U) Round beam Off-resonance coupling

Research progress of permanent ferrite magnet materials

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Journal of Central South University 2024年第6期31卷 1723-1762页

作者： XU Bin CHEN Yu-feng ZHOU Yu-juan LUO Bi-yun zhong shou-guo LIU Xing-ao School of Minerals Processing and Bioengineering Central South UniversityChangsha 410083China

Permanent ferrite magnet materials are extensively employed due to their exceptional magnetic properties and *** fast development in electromobile and household appliance industries contributes to a new progress in permanent ferrite *** paper reviews the deveolpement and progress of permanent ferrite magnet industry in recent *** emergence of new raw material,the advancement of perparation methods and manufacturing techniques,and the potential applications of permanent ferrite materials are introduced and ***,nanocrystallization plays a crucial role in achieving high performance at a low cost and reducing reliance on rare earth resources,and therefore it could be a promising development trendency.

关键词： permanent ferrite magnetic materials high-performance nanosizing

基于解释水平理论的直播间活跃度和产品信息诉求的匹配效应研究

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管理学报 2024年第4期21卷 577-584页

作者：寿志钢吴美张怡孙众武汉大学经济与管理学院武汉市430072

基于解释水平理论,通过二手数据分析和仿真模拟实验研究,揭示直播间活跃度(高vs.低)与产品信息诉求(属性vs.利益)对消费者购买意愿的匹配效应。研究表明:①当直播间活跃度高时,利益诉求的产品信息更能提高消费者的购买意愿;当直播间活... 详细信息

基于解释水平理论,通过二手数据分析和仿真模拟实验研究,揭示直播间活跃度(高vs.低)与产品信息诉求(属性vs.利益)对消费者购买意愿的匹配效应。研究表明:①当直播间活跃度高时,利益诉求的产品信息更能提高消费者的购买意愿;当直播间活跃度低时,属性诉求的产品信息更能提高消费者的购买意愿。②感知有用性中介直播间活跃度和产品信息诉求对消费者购买意愿的影响。③弹幕相似性调节直播间活跃度和产品信息诉求的匹配效应,即当弹幕相似时,两种诉求策略对消费者的影响无显著差异。

关键词：直播电商直播间活跃度产品信息诉求感知信息有用性解释水平理论