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EXPERIMENTAL STUDY OF THE ASYNCHRONOUS MULTISPLITTING RELAXATION METHODS FOR THE LINEAR COMPLEMENTARITY PROBLEMS

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Journal of computational Mathematics 2002年第6期20卷 561-574页

作者： Zhong-zhi Bai(State Key Laboratory of Scientific/engineering Computing, Institute of computational Mathematicsand Scientific/engineering Computing, Academy of Mathematics and System Sciences, ChineseAcademy of Sciences, Beijing 100080, china. Institute of computational Mathematics and Scientific/engineering Computing Academy of Mathematics and System Sciences Chinese Academy of Sciences State Key Laboratory of Scientific/Engineering ComputingCAS 北京 100080

Presents a study of the numerical behaviors of the relaxed asynchronous multisplitting methods for linear complementarity problems by solving typical problems from practical applications on a real multiprocessor system. Description of the tested problems and computing environment used in the computations; Description of the asynchronous multisplitting unsymmetric accelerated overrelaxation method; Discussion of results.

关键词： linear complementarity problem matrix multisplitting asynchronous iterative methods numerical experiment

Explicit analytical solutions fof transport equations considering non-Fourier and non-Fick effects in porous media

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Progress in Natural Science:Materials International 2005年第6期 545-549页

作者： GOU Chenhua 1,2., CAI Ruixian1* and ZHANG Na1(1. Institute of engineering Thermophysics, Chinese Academy of Sciences, Beijing 100080, china.2. Graduate School, Chinese Academy of Sciences, Beijing 100080, china.

Based on the method of separation variables with addition developed in recent years, new methods of separation variables are proposed, and two algebraically explicit analytical solutions to the general partial differential equation set of non-Fourier and non-Fick heat and mass transfer in porous media drying are derived. The physical meaning of these solutions is simple and clear, and they are valuable for computational heat and mass transfer as benchmark solutions.

关键词： non-Fourier effects non-Fick effects porous media heat and mass transfer analytical solution.

A New Secure Password Authentication Scheme Using Smart Cards

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Wuhan University Journal of Natural Sciences 2008年第6期13卷 739-743页

作者： WANG Bangju1,2. WANG Yuhua3, ZHANG Huanguo1 1. School of Computer, Wuhan University/Key Laboratory of Aerospace Information Security and Trust Computing of Ministry of Education, Wuhan 430072. Hubei, china.2. School of Science, Huazhong Agricultural University, Wuhan 430070, Hubei, china.3. College of Information Science and {2., Henan University of Technology Zhengzhou 450001, Henan, china School of Computer Wuhan University/Key Laboratory of Aerospace Information Security and Trust Computing of Ministry of Education Wuhan China School of Science Huazhong Agricultural University Wuhan China College of Information Science and engineering Henan University of Technology Zhengzhou China

Thirteen security requirements for an ideal password authentication scheme using smart cards are listed and a new smart card based password authentication scheme with identity anonymity is proposed. The new scheme can satisfy all the listed ideal security requirements and has the following merits：（1） it can resist all the attacks listed in introduction; （2. less storage memory requirement due to no verification table stored in server; （3） low computational cost due to hash functions based operations; （4） even if the smart card is lost, the new system is still secure; （5） As user identity is anonymous, this scheme is more practical. The new proposed scheme can be applied in source constraint networks.

关键词： password password authentication hash function attack smart card

Dynamic feedback robust stabilization of nonholonomic mobile robots based on visual servoing

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控制理论与应用（英文版） 2010年第2期8卷 139-144页

作者： Chaoli WANG 1 , Zhenying LIANG 2., 3 , Qingwei JIA 4 (1.Department of Control Science and engineering, University of Shanghai for Science and Technology, Shanghai 2.0093, china.2.Business School, University of Shanghai for Science and Technology, Shanghai 2.0093, china.3.School of Science, Shandong University of Technology, Zibo Shandong 2.5049, china.4.Research & Development centre, Hitachi Asia Ltd, Hitachi Tower, Singapore 049318) Department of Control Science and engineering University of Shanghai for Science and Technology Shanghai China Business School University of Shanghai for Science and Technology Shanghai China School of Science Shandong University of Technology Zibo Shandong China Research & Development centre Hitachi Asia Ltd Hitachi Tower Singapore

This paper investigates the visual servoing robust stabilization of nonholonomic mobile robots. The calibration of visual parameters is not only complicated, but also needs great consumption of calculated time so that the accurate calibration is impossible in some situations for high requirement of real timing. Hence, it is interesting and important to consider the design of stabilizing controllers for nonholonomic kinematic systems with uncalibrated visual parameters. A novel uncertain model of these nonholonomic kinematic systems is proposed. Based on this model, a stabilizing controller is discussed by using dynamic feedback and two-step techniques. The proposed robust controller makes the mobile robot image pose and the orientation converge to the desired configuration despite the lack of depth information and the lack of precise visual parameters. The stability of the closed loop system is rigorously proved. The simulation is given to show the effectiveness of the presented controllers.

关键词： Nonholonomic system Uncalibrated visual parameters Stabilization Dynamic feedback

A SCALED CENTRAL PATH FOR LINEAR PROGRAMMING

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Journal of computational Mathematics 2001年第1期19卷 35-40页

作者： Ya-xiang Yuan (State Key Laboratory of Scientific and engineering Computing, Institute of computational Mathematics and Scientific/engineering Computing Chinese Academy of Sciences, Beijing 100080, china. 中科院计算数学与工程计算数学所科学与工程计算国家重点实验室北京 100080

Proposes a central path in interior point methods which scales the variables. Role of the central path in interior point methods; Methodology; Results and discussion.

关键词： central path interior point methods linear programming

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双肢薄壁高墩施工过程稳定性分析的快速算法

铁道学报 2004年第5期26卷 86-90页

作者：李开言陈政清韩艳中南大学土木建筑学院湖南长沙410075 湖南大学土木工程学院湖南长沙410082

根据能量原理,推导了双肢薄壁高墩在施工荷载作用下静力稳定系数的代数表达式。算例分析表明,运用本文推导的稳定系数表达式计算结果与ANSYS有限元计算结果非常相近。本文方法运用方便、准确性高,具有很高的现场应用价值。

关键词：双肢薄壁高墩稳定分析能量原理

On the Cauchy problem of generalized complex Ginzburg-Landau equation in three dimensions

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Progress in Natural Science:Materials International 2003年第9期 20-27页

作者： LI Donglong and GUO Boling (1. Guangxi Institute of Technology, Liuzhou 545006, china.2. Graduate School of china.Academy of {2. Physics, Beijing 100088, china.3. Institute of Applied Physics and computational Mathematics, P. O. Box 8009, Beijing 100088, china. Guangxi Institute of Technology，Liuzhou 545006，china Graduate School of china.Academy of engineering Physics，Beijing 100088，{2. Institute of Applied Physics and computational Mathematics，P. O. Box 8009，Beijing 100088，china

The generlized complex Ginzburg-Landau equation (CGL) under periodic boundary condition is studied. The existenceof global solution for this equation is established under appropriate assumption on a nonlinear σ, whic... 详细信息

关键词： generalized complex Ginzburg-Landau equation global solution.

A DUAL COUPLED METHOD FOR BOUNDARY VALUE PROBLEMS OF PDE WITH COEFFICIENTS OF SMALL PERIOD

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Journal of computational Mathematics 1996年第2期14卷 159-174页

作者： J.Z. Cui H.Y. Yang(Institute of computational Mathematics and Scientific/engineering Computing,Chinese Academy of Sciences, Beijing, {2. 中科院计算数学与科学工程计算所北京

In this paper the homogenization method is improved to develop one kind of dual coupled approximate method, which reflects both the macro-scope properties of whole structure and its loadings, and micro-scope configuration properties of composite materials. The boundary value problem of woven membrane is considered, the dual asymptotic expression of the exact solution is given, and its approximation and error estimation are discussed. Finally the numerical example shows the effectiveness of this dual coupled method.

关键词： PDE A DUAL COUPLED METHOD FOR BOUNDARY VALUE PROBLEMS OF PDE WITH COEFFICIENTS OF SMALL PERIOD

The Properties of Native Silk Fibroin (SF) Solution/Gel from Bombyx mori Silkworms during the Full Fifth Instar Larval Stage

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Journal of Wuhan University of Technology(Materials Science) 2011年第2期26卷 263-269页

作者：王洪 Key Laboratory of Textile Science & Technology Ministry of EducationDonghua University

The properties of native silk fibroin （SF） solution in the gland of silkworms during the full fifth instar larval stage were examined in an attempt to elucidate the mechanism of natural silk spinning in the *** flow and gelation behavior,birefringence phenomenon,rheological properties,specific viscosity and conformation of SF solutions from the gland of silkworms were measured by polarized light microscope,HAKKE rheometer,Ubbelohde viscometer and Solid-state 13C NMR,*** comparing their properties with regenerated SF solutions from natural silk fibers,it is believed that there exists a progressive maturation process favorable to spin silk fibers with excellent properties from native SF solution and a weak bonded and highly oriented SF gel network with SF molecules partly extended in α-helix conformation is formed in the middle section of the gland of *** suggests that a biomimetic maturation process for making spinnable solution might be necessary for artificial silk fiber spinning in order to obtain improved fiber properties.

关键词： silk fibre spin viscosity sol/gel