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Generalized gradient projection neural networks for nonsmooth optimization problems

science China(information sciences) 2010年第5期53卷 990-1005页

作者： LI GuoCheng 1 , SONG ShiJi 2 ? & WU Cheng 2 1 Department of Mathematics, beijing information science and technology university, beijing 100192, China 2 Department of Automation, Tsinghua university, beijing 100084, China Department of Mathematics Beijing Information Science and Technology University Department of Automation Tsinghua University

Generalized gradient projection neural network models are proposed to solve nonsmooth convex and nonconvex nonlinear programming problems over a closed convex subset of R n . By using Clarke’s generalized gradient, the neural network modeled by a differential inclusion is developed, and its dynamical behavior and optimization capabilities both for convex and nonconvex problems are rigorously analyzed in the framework of nonsmooth analysis and the differential inclusion theory. First for nonconvex optimization problems, the quasi convergence results similar to those achieved by previous work are proved. For convex optimization problems, the global convergence results are proved, i.e. any trajectory of the neural network converges to an asymptotically stable equilibrium point, which is an optimal solution of the primal problem whenever it exists. This result remains valid even if the initial condition is chosen outside the feasible set. In addition, an asymptotic control result involving a Tykhonov like regularization shows that any trajectory of the revised neural network can be forced to converge toward a particular optimal solution of the primal problem. Finally, two simulation optimization algorithms for solving the optimization and control problems are designed respectively, and three typical simulation experiments are illustrated to present the accuracy and efficiency of theoretical convergence results of this paper.

关键词： nonsmooth optimization problem generalized gradient projection networks differential inclu sions convergence

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Amplitude Squeezing of a Weakly Interacting Bose System with Spontaneous U(1) Symmetry Breaking

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Communications in Theoretical Physics 2007年第12期48卷 1047-1050页

作者： JIAO Zhi-Yong Department of Applied Physics,China university of Petroleum(East China),Dongying 257061,ChinaYU Zhao-Xian Department of Physics,beijing information science and technology university,beijing 100101,ChinaWANG Ji-Suo Department of Physics,Liaocheng university,Liaocheng 252059,China Department of Applied Physics China University of Petroleum (East China) Department of Physics Beijing Information Science and Technology University Department of Physics Liaocheng University

We study the quantum fluctuations and the amplitude squeezing of a weakly interacting Bose system withspontaneous U(1) symmetry *** is found that this system can exhibit amplitude squeezing.

关键词： Bose system amplitude squeezing

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EXISTENCE OF SOLUTIONS TO AN m-POINT BOUNDARY VALUE PROBLEM OF THIRD ORDER ODE’S AT RESONANCE

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Annals of Differential Equations 2011年第3期27卷 384-389页

作者： Chunyan Xue,Meiqiang Feng(School of science,beijing information science & technology university,beijing 100192)

In this paper,we study an m-point boundary value problem of third order ODEs at resonance. We prove some existence results for the m-point boundary value problem at resonance by the coincidence degree theory of [8,9].... 详细信息

关键词： boundary value problem Fredholm operator resonance

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Model of Current Threshold for Perception in Testing Electrical Safety Performance

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Transactions of Tianjin university 2010年第1期16卷 11-16页

作者：王晓飞张朝晖李东刘国忠赵旭 School of information Engineering University of Science and Technology Beijing School of Electro-Optical Engineering Beijing Information Science and Technology University Department of Neurology The 306th Hospital of PLA

A generalized mathematical model of human body current threshold for perception was established and the current flowing through human body could be arbitrary cyclical *** relationship between human body current threshold for perception and current frequency, true root mean square(RMS) value and influence factor was described.A test system was established based on electroencephalogram(EEG) to study the relationship between human body current threshold for perception and current waveform, frequency ...

关键词： electrical safety performance leakage current current threshold for perception current waveform electroencephalogram(EEG)

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The Research of Searching Algorithm in Amazons Game

The Research of Searching Algorithm in Amazons Game

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2011 Chinese Control and Decision Conference（CCDC）

作者： Qinqin Guo,postgraduate student of beijing information science & technology university.ShuQin Li,professor of beijing information science & technology university.Hua Bao postgraduate student of beijing information science & technology university.

In the area of computer game,Amazons game is a relatively new one whose rules stand between the game of Chess and *** move rule is simple but apt to generate tremendous move *** on the UCT searching algorithm,this paper presents an idea that the whole process of Amazons game can be divided into three phases,which are the Opening,Middle game and Endgame,then different strategies are applied to different phases according to their respective ***,a new Monte-Carlo simulation method applicable to Amazons game is proposed in this *** corresponding experiments are conducted to show the validation of the proposed algorithms.

关键词： Amazons game UCT Monte-Carlo simulation Searching Algorithm

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THE “GREEN” CONSCIOUSNESS EMBODIED IN THE TRADITIONAL DEMIURGIC THOUGHT

THE “GREEN” CONSCIOUSNESS EMBODIED IN THE TRADITIONAL DEMI...

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2006年中国机械工程学会年会暨中国工程院机械与运载工程学部首届年会

作者： ZHENG Xia beijing information science & technology university, 100085, China

Based on the green design confronted with the social background, this paper expounds the “green” consciousness in the traditional demiurgic view from the perspective of the Chinese traditional demiurg

关键词： Traditional demiurgic thought the green design material utility to be the purpose of its existence perfection to achieve harmony between nature and man environment.

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The Direct Adaptive Fuzzy Control for Satellite Attitude Control

The Direct Adaptive Fuzzy Control for Satellite Attitude Con...

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2011 Chinese Control and Decision Conference（CCDC）

作者： Ping Guan is with Department of Automatic Control,beijing information science and technology university Wei Zhang is with Department of Automatic Control,beijing information science and technology university Xiao-he Liu is with department of Automatic Control,beijing information science and technology university Ming-hui Li is with Department of Automatic Control,beijing information science and technology university

In this paper,the direct adaptive fuzzy control is applied to the attitude stabilization control of the *** detailed design procedure of the system is *** controller directly acts on the controlled *** direct adaptive fuzzy controller is designed for the satellite and the parameter adaptive law is *** results show the proposed control law can resist the perturbation effectively and have better dynamic and static performances.

关键词： Adaptive control Fuzzy control Attitude control Satellite

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Porting U-Boot to the Control Computer Based on MPC8349

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微计算机信息 2009年第26期 83-85页

作者： (School of Automation,beijing information science and technology university,beijing 100101,China)GAO Jing-min LAN Yu-zhu

In this paper,the way of porting U-Boot to Control Computer Based MPC8349 will be introduced in *** the development of the embedded system,the U-Boot is getting more and more useful of the boot loader for the *** this case,the study of porting U-Boot to the system of MPC8349 is very *** results show that the U-Boot can run on the system prefect.

关键词： U-Boot MPC8349 Embedded system

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Color Image Scrambling Algorithm Research based on FAN Transform

Color Image Scrambling Algorithm Research based on FAN Trans...

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2011 4th IEEE International Conference on Computer science and information technology(ICCSIT 2011)

作者： Wang Wentao Fan Jing Optoelectronics information and Communication Engineering College beijing information science and technology university beijing China

This paper presents a new method of color image scrambling algorithm based on FAN *** [1] put forward the concept FAN transform,FAN transform is a transformation-set which contains countless transformation matrixes,while Arnold transform is only a special case of *** principle of the new method is to use the diversity of FAN Transform and the properties of color *** the analysis of characteristics of color image,the image can be decomposed into three color components which are red,green and blue *** different transformation matrixes for each color component and do FAN Transforms on them for different *** enhance the encryption strength,hue conversion between the three colors can further strengthen the degree of image *** the three transformed images and make them into one,which is the encrypted *** proposed image encryption does not have information loss and the expansion of transformation types directly improves the encryption *** this above method will increase the difficulty of cracking and improve the security.

关键词： Image Scrambling FAN Transform color analysis

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大学图书馆在OA环境中的发展策略

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图书馆工作与研究 2008年第10期 30-33页

作者：马铭锦北京信息科技大学图书馆

本文介绍了OA的发展现状,分析了OA运动对大学图书馆的意义并探讨了OA环境中大学图书馆的发展策略,目的是使大学图书馆积极适应学术交流模式的转变,以稳固其知识交流中心的地位。

关键词：开放存取图书馆学术交流

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