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Dynamic scheduling model of computing resource based on MAS cooperation mechanism

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Science in China(Series F) 2009年第8期52卷 1302-1320页

作者： JIANG WeiJin1,2, ZHANG LianMei3.& WANG Pu4 1 School of Computer and Electronic engineering, Hunan university of Commerce, Changsha 410205, China 2 School of Information engineering, Xiangtan university, Xiangtan 411000, China 3.Electrical engineering college, wuhan university, wuhan 43.072, China 4 School of Commerce, Central South university, Changsha 410083. China School of Computer and Electronic engineering Hunan University of Commerce Changsha China School of Information engineering Xiangtan University Xiangtan China Electrical engineering college Wuhan University Wuhan China School of Commerce Central South University Changsha China

Allocation of grid resources aims at improving resource utility and grid application performance. Currently, the algorithms proposed for this purpose do not fit well the autonomic, dynamic, distributive and heterogeneous features of the grid environment. According to MAS （multi-agent system） cooperation mechanism and market bidding game rules, a model of allocating allocation of grid resources based on market economy is introduced to reveal the relationship between supply and demand. This model can make good use of the studying and negotiating ability of consumers＇ agent and takes full consideration of the consumer＇s behavior, thus rendering the application and allocation of resource of the consumers rational and valid. In the meantime, the utility function of consumer is given; the existence and the uniqueness of Nash equilibrium point in the resource allocation game and the Nash equilibrium solution are discussed. A dynamic game algorithm of allocating grid resources is designed. Experimental results demonstrate that this algorithm diminishes effectively the unnecessary latency, improves significantly the smoothness of response time, the ratio of throughput and resource utility, thus rendering the supply and demand of the whole grid resource reasonable and the overall grid load balanceable.

关键词： multi-agent system (MAS) resource scheduling model evolutionary game cooperation mechanism utility function

Investigation on Vibrational Spectra and Structures of 4-Mercaptopyridine Monomer and Its Dihydrate

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Chemical Research in Chinese Universities 2006年第1期22卷 90-93页

作者： CHENG Jian-bo 1,2 , XUE Wei-qing 1 , ZHAO Bing 1** , ZHANG Gang 3.and GONG Bao-an 2 1. Key Laboratory for Supramolecular Structure and Material of Ministry of Education, Jilin university, Changchun 13.012, P. R. China 2. Science and engineering college of Chemistry and Biology, Yantai university, Yantai 264005, P. R. China 3. State Key Laboratory of Theoretical and Computational Chemistry, Jilin university, Changchun 13.023. P. R. China Key Laboratory for Supramolecular Structure and Material of Ministry of Education Jiln University Changchun 130012 P. R. China Science and engineering college of Chemistry and Biology Yantai University Yantai 264005 P. R. China State Key Laboratory of Theoretical and Computational Chemistry Jiln University Changchun 130023 P. R. China

The optimized molecular structures and vibrational frequencies of 4-mercaptopyridine(4MPY) monomer and its dihydrate were studied by means of the density functional theory(DFT), viz. B3.YP method with the 6-3.1++G(d,p) basis set. On the basis of the calculations, the assignments of the vibrational spectra of the monomer and the dihydrate were performed, and so were investigated the changes in the structure and the vibrational spectrum of the dihydrate as well as the intermolecular force resulting in the formation of the dihydrate. The calculated results show that each of the water molecule planes is vertical to the pyridine ring plane in the dihydrate that is formed via the H-bonds between 4MPY and water molecules. Furthermore, the structure and the vibrational spectrum of 4MPY can be consi- derably affected by the water molecules.

关键词： 4MPY Dihydrate Vibrational spectra DFT Molecular structure

NUMERICAL SIMULATION AND EXPERIMENTAL RESEARCH ON HYDRAULIC COUNTER-PRESSURE DEEP DRAWING OF CONICAL PART

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Chinese Journal of mechanical engineering 2001年第1期14卷 94-96页

作者： Tang Jinglin Nie Shaomin college of mechanical engineering,Yanshan{3. 燕山大学机械工程学院河北秦皇岛

Hydraulic counter pressure deep drawing of truncated conical part is numerically simulated with MARK and the nature of increasing the forming limit in this process is *** effects of blank holding force and chamber pressure on forming results are investigated by experiments and,as a result,truncated conical parts with large drawing ratio are successfully formed in single step with this drawing method.

关键词： Hydraulic counter pressure deep drawing Numerical simulation Truncated conical part

DYNAMIC SIMULATION OF ROTATING SHELLS COUPLED WITH LIQUID

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Acta Mechanica Solida Sinica 2001年第2期14卷 169-175页

作者： Wei Fayuan Li Shiqi Huang Yuying~1 Zhong Yifang (college of mechanical Science and engineering, Huazhong{3. of Science and technology, wuhan 43.074, China) (1 Department of Mechanics, Huazhong{3. of Science and technology, wuhan 43.074,China) Coll. of Mech. Sci. and engineering Huazhong Univ. of Sci. and Technol. Wuhan 430074 China Department of Mechanics Huazhong Univ. of Sci. and Technol. Wuhan 430074 China

The dynamic behaviors of rotating shells coupled with liquid areshown. The shell under con- sideration has arbitrary boundaryconditions and a complex shape. A modified boundary element methodand finite strip technique are used to improve the computingefficiency and to guarantee the continuity conditions on theliquid-shell interaction plane. The effects of various parameterssuch as shell's thickness and liquid depth are investigated. Dynamicsimulations are applied to several typical shell-liquid systems, andthe natu- ral frequencies, mode shapes and response of vibration arecalculated numerically.

关键词： rotting shells dynamic simulation fluid-solid interaction

Vision navigation algorithm for mine agent based on quaternion

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中国有色金属学会会刊：英文版 2011年第S3期21卷 610-615页

作者： LI Ke-zhao1, 4, LEI Wei-wei1, 2, GUO Zeng-zhang1, 2, WU Li-xin3. ZHANG Qin4 1. School of Survey and Land Information engineering, Henan Polytechnic university, Jiaozuo 454003. China 2. Key Laboratory of Mine Spatial Information Technologies of State Bureau of Surveying and Mapping, Henan Polytechnic university, Jiaozuo 454003. China 3.{3. of Resources and Civil engineering, Northeastern university, Shenyang 110819, China 4.{3. of Geology engineering and Geomatics, Chang’an university, Xi’an 710054, China School of Survey and Land Information engineering Henan Polytechnic University Jiaozuo 454003 China college of Geology engineering and Geomatics Chang'an University Xi'an 710054 China Key Laboratory of Mine Spatial Information Technologies of State Bureau of Surveying and Mapping Henan Polytechnic University Jiaozuo 454003 China college of Resources and Civil engineering Northeastern University Shenyang 110819 China

Autonomous relative navigation is the key technology in mining or rescuing. On the basis of mine requirement and the theories of machine vision, an autonomous relative navigation algorithm for mine agent based on quaternion was proposed. In rotation transformation, this algorithm was represented by using quaternion. Because the Jacobi matrix of this method is lower than that of Hall algorithm, the calculation efficiency is improved by using this algorithm. The results of these experiments show that the computation burden of this algorithm based on quaternion is about half that of Hall algorithm. This algorithm based on quaternion is improved as a valid way to solve the problem of mine real-time navigation.

关键词： quaternion mine agent vision navigation

Research on spectrographic oil analysis of 12VE-23.ZC diesel engine

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Science China Mathematics 2001年第S1期44卷 454-458页

作者： TIAN Hongxiang YAN Xinping PIAO Jiazhe ZHANG Yepeng 1. Reliability engineering Institute, wuhan university of{3., wuhan 43.063. China 2. The Naval university of engineering, wuhan 43.03., China 3. mechanical Department, hubei Polytechnical university, wuhan 43.068, China wuhan Univ Technol Reliabil Engn Inst Wuhan 430063 Peoples R China Naval Univ Engn Wuhan 430033 Peoples R China hubei Polytech Univ Dept Mech Wuhan 430068 Peoples R China

With the spectrographic analysis, this paper analyzes the concentration of elements inoil, such as Fe, Cu, Cr, Al, Si etc. In order to monitor conditions and diagnose faults, the correlationcoefficient of main element... 详细信息

关键词： spectrographic analysis wear condition monitoring faults diagnosis

Tension and Thickness Control Strategy Analysis of Two Stands Reversible Cold Rolling Mill

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Journal of Iron and Steel Research International 2012年第10期19卷 20-25页

作者： LIU Guang-ming1, DI Hong-shuang2, ZHOU Cun-long1, LI Hong-cui3. LIU Jiang3.(1. college of Materials Science and engineering, Taiyuan university of Science and{3., Taiyuan 03.024, Shanxi, China 2. State Key Laboratory of Rolling and Automation, Northeastern university, Shenyang 110819, Liaoning, China 3. Cold Rolling Plant, Jinan Iron and Steel Group Co Ltd, Jinan 250101, Shandong, China) college of Materials Science and engineering Taiyuan University of Science and Technology Taiyuan Shanxi China State Key Laboratory of Rolling and Automation Northeastern University Shenyang Liaoning China Cold Rolling Plant Jinan Iron and Steel Group Co Ltd Jinan Shandong China

In order to lucubrate the rolling characteristic of the two stands reversible cold rolling mill and establish the tension and thickness control strategy, the steady-state characteristic simulating program was established using the steady-state continuous rolling theory. The influences of each factor on exit thickness under different tension control methods were analyzed. The results show that, the influence of the entry stand gap on exit thickness is significant and it changes little with different tension control methods. As a result, the entry stand gap can be used as the main control method of exit thickness, whereas rolling speed of any stand and roll gap of the exit stand can be used to adjust the inter-stand tension. The results are beneficial for thickness and tension control of the two stands reversible cold rolling mill.

关键词： two stand reversible cold rolling thickness tension control strategy

CAD/CAE OF THE WORKING CHARACTERISTICS OF A NEW TYPE OF FLUID COUPLING SHOCK ABSORBER

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Chinese Journal of mechanical engineering 2002年第3期15卷 222-227页

作者： Yang Ping Zhong Yifang Zhou JiSchool of mechanical Science and engineering, Huazhong university of Science and{3.,wuhan 43.074, ChinaLiu Yong Guilin Institute of Electronic{3. School of mechanical Science and engineering Huazhong University of Science and Technology Wuhan 430074

For purpose of simulation of the working characteristics of a new type offluid coupling shock absorber for vibration protection of sensitive equipment, a physical model ispresented by analyzing the internal fluid dynamic phenomenon with respect to the coupling shockabsorber and implemented in MATLAB software package. Using the model it is possible to evaluate theimportance of different factors for design of the shock absorber. In the meantime, the key-modelmachine is designed for coupling dynamic test. Comparisons with experimental results confirm thevalidity of the model. So the CAD/CAE software has been developed in MATLAB for design andexperimental test of the new coupling shock absorber.

关键词： Fluid coupling shock absorber Working characteristics Model Simulation

STUDY ON THE MATHEMATICAL MODEL FOR DRILL WANDERING MOTION

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Chinese Journal of mechanical engineering 2000年第1期13卷 58-63页

作者： Zhou Zhixiong Lin Cheng (college of mechanical and Automotive engineering, Hunan{3.) 湖南大学湖南长沙

Based on the kinematic relationship of the drill, drill point and workpiece and the coordinate systems founded,the mathematical models of the drill point wandering motion for the drill initial penetration, i. e. the formulae for the drill point center locus, hole shape and cutting edge locus, are established. According to these formulae the hole shape to be made is simulated and analyzed. It is verified that the bending chatter of the drill during the drill penetrating is the main cause to form a polygon like hole.

关键词： Drill point Initial penetration Wandering motion Mathematical model