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International Conference on Grid and Cooperative Computing (GCC)

作者： Chuntian Cheng Zhijie Li Feixue Huang Zhendong Cui Institute of Hydropower System & Hydroinformatics Dalian University of Technology Dalian Liaoning China Dalian University of Technology China Department of Economics Dalian University of Technology Dalian Liaoning China Department of Computer Science and Engineering Dalian University of Technology Dalian Liaoning China

This paper presents an economic-based resource allocation algorithm - mix optimization algorithm to meet user requirements in proportional resource sharing grid environment. The mix optimization algorithm is targeted to minimize two objectives, i.e., competing users 'processing cost and competing users' executing time with budget and deadline constraints, using multi-objective programming method. After establishing evaluating function of the optimal problem, a method similar to alpha-method is introduced to determine weight coefficients which define the relative importance of different optimization objective. The experimental results show that mix optimization algorithm leads to more efficient resource allocation than algorithms with single optimal goal (time optimization and cost optimization)

关键词： Resource management Grid computing Environmental economics Cost function Algorithm design and analysis computer science Design engineering Hydroelectric power generation Design optimization Constraint optimization

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A research on anti-radiation passive ranging technique for anti-ship missile

Chung Cheng Ling Hsueh Pao/Journal of Chung Cheng Institute ...

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Chung Cheng Ling Hsueh Pao/Journal of Chung Cheng Institute of Technology 2006年第2期34卷 57-70页

作者： Lee, Sou-Chen Wu, Yet-Ta Department of Computer Information and Network Engineering LungHwa University of Science and Technology Taiwan Department of System Engineering Chung Cheng Institute of Technology National Defense University Taiwan

The active radar operation principle will face a rigorous challenge in modern electronics warfare, being a new direction finding and ranging technique development, the source of radiation of target must be requested possessing a silence manner for signal intelligence communication. This paper discusses the angle-only tracking algorithm for an over-flight missile by a consecutive measure to locate the position of target's emission source. The paper also concerned an important issue in terminal phase, about it was found that the chaff were dispersed from a target, it may cause an ambiguity when the passive ranging was applied and an active seeker was be turned on. It discusses an identification technique from the time domain viewpoint and to separate a target from ambiguity environments. Firstly, it use the IE method to estimate the position of a target. Secondly, it was considered the chaff effect with respect to the target in terminal course. A simulation results will then demonstrate that the accuracy of dynamics identification has been improved by the adaptive IE scheme, thus the proposed method was allowed the seeker to be armed with a more accurate estimate method.

关键词： Adaptive input estimation (IE) Direction fiding Passive ranging

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Theory and Network Applications of Dynamic Bloom Filters

Theory and Network Applications of Dynamic Bloom Filters

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IEEE Annual Joint Conference: INFOCOM, IEEE computer and Communications Societies

作者： D. Guo J. Wu H. Chen X. Luo Key laboratory of C4ISR Technology School of Information System and Management National University of Defense Technology Changsha Hunan China Department of Computer Science and Engineering Florida Atlantic University Boca Raton FL USA

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Detection and Avoiding Ventricular Suction of Ventricular Assist Devices

Detection and Avoiding Ventricular Suction of Ventricular As...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： A. Tanaka M. Yoshizawa P. Olegario D. Ogawa K. Abe T. Motomura S. Igo Y. Nose Faculty of Symbiotic System Science Fukushima University Fukushima Japan Information Synergy Center University of Tohoku Sendai Japan Graduate School of Engineering University of Tohoku Sendai Japan Department of Computer Science College of Engineering Nihon University Koriyama Japan Michael E. DeBakey Department of Surgery Baylor University College of Medicine Houston TX USA

Continuous flow blood pumps, such as axial flow and centrifugal pumps, have been gaining interest as circulatory devices for total artificial hearts (TAHs) and a biventricular assist device (BVAD) because of their smaller size and simpler structure compared to pulsatile pumps. However, continuous flow pumps are more prone to suction of the left ventricle than pulsatile pumps are. Sudden increases in flow rate to meet changes in physiological demand, especially in the left pump, often cause ventricle suction. In this study, a control algorithm to prevent suction from occurring in the left ventricle by controlling the rotational speed of the right pump, instead of reducing the cardiac output of the left pump, was developed and investigated. The method was tested in acute animal experiments with calves. The results indicate that this proposed method is capable of preventing suction and could simultaneously maintain circulatory control. A key advantage of this control system is that flow rates can be maximized while avoiding ventricle suction conditions particularly when the circulatory system is unstable such as in a the first few days after operation

关键词： Artificial heart Biomedical engineering Electronic mail Testing Animals Control systems Circulatory system Blood flow Pressure control Medical control systems

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Design and Evaluation of a PLL-Based Position Controller for Sensorless Vector Control of Permanent-Magnet Synchronous Machines

Design and Evaluation of a PLL-Based Position Controller for...

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Annual Conference of Industrial Electronics Society

作者： Rolando P. Burgos Parag Kshirsagar Alessandro Lidozzi Jihoon Jang Fred Wang Dushan Boroyevich Pedro Rodriguez Seung-Ki Sul Virginia Tech Center for Power Electronics Systems Blacksburg VA USA Department of Mechanical and Industrial Engineering ROMA TRE University Rome Italy HEV System Engineering Team Hyundai Motor Company South Korea Department of Electrical Engineering Technical University of Catalonia Barcelona Spain School of Electrical Engineering Computer Science Seoul National University Seoul South Korea

This paper presents a rotor position controller for sensorless vector control of permanent magnet synchronous machines (PMSM) based on a synchronous d-q frame phase-locked loop (PLL). Extending the capabilities of PLL's for grid-connected converters-using feedback linearization to ensure a constant dynamic response regardless of the operating region and rotor speed, the proposed controller takes advantage of the sinusoidal and balanced PMSM back-EMF voltages synchronizing the estimated and actual d-q frames. The resultant controller structure is readily linearized providing an accurate design tool based on frequency response specifications. A complete design procedure is provided, together with simulation and experimental results with a 3.5 kW PMSM drive, all of which verify the excellent results attained by the proposed PLL-based position controller.

关键词： Sensorless control Machine vector control Synchronous machines Rotors State estimation Observers Control systems Permanent magnet machines Phase locked loops Feedback

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High Temperature Stable [Ir3Si-TaN]/HfLaON CMOS with Large Work-Function Difference

High Temperature Stable [Ir3Si-TaN]/HfLaON CMOS with Large W...

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International Electron Devices Meeting (IEDM)

作者： C. H. Wu B. F. Hung Albert Chin S. J. Wang W. J. Chen X. P. Wang M.-F. Li C. Zhu Y. Jin H. J. Tao S. C. Chen M. S. Liang Institute of Microelectronics Department of Electronics Engineering National Cheng Kung University Tainan Taiwan Nano-Science Technology Ctr Department of EE. Nat'l Chiao-Tung U. U. System of Taiwan Hsinchu Taiwan Graduate Institute of Materials Engineering National Pingtung University of Science and Technology Taiwan SNDL Department of Electrical & Computer Engineering National University of Singapore Singapore Taiwan Semiconductor Manufacturing Corporation Hsinchu Taiwan

The authors report novel 1000degC-stable [Ir 3 Si-TaN]/HfLaON CMOS for the first time, where the self-aligned and gate-first process are full compatible to current VLSI. Good Phi m-eff of 5.08 and 4.24 eV, low V t of -0.10 and 0.18 V, high mobility of 84 and 217 cm 2 /Vs at 1.6 nm EOT, and small 85degC BTI <20 mV (10 MV/cm for 1 hr) are measured

关键词： Temperature Hafnium compounds Crystallization Dielectrics CMOS technology Leakage current Thermal stability Amorphous materials computer aided manufacturing Very large scale integration

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Local Learning and Search in Memetic Algorithms

Local Learning and Search in Memetic Algorithms

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Congress on Evolutionary Computation

作者： F.G. Guimaraes E.F. Wanner F. Campelo R.H.C. Takahashi H. Igarashi D.A. Lowther J.A. Ramirez Department of Electrical Engineering Federal University of Minas Gerais Belo Horizonte Minas Gerais Brazil Research Group of Informatics for System Synthesis Graduate School of Information Science and Technology Hokkaido University Sapporo Japan Department of Mathematics Federal University of Minas Gerais Belo Horizonte Minas Gerais Brazil Department of Electrical and Computer Engineering McGill University Montreal Canada

The use of local search in evolutionary techniques is believed to enhance the performance of the algorithms, giving rise to memetic or hybrid algorithms. However, in many continuous optimization problems the additional cost required by local search may be prohibitive. Thus we propose the local learning of the objective and constraint functions prior to the local search phase of memetic algorithms, based on the samples gathered by the population through the evolutionary process. The local search operator is then applied over this approximated model. We perform some experiments by combining our approach with a real-coded genetic algorithm. The results demonstrate the benefit of the proposed methodology for costly black-box functions.

关键词： Evolutionary computation Employment Sampling methods Cost function Genetic algorithms Mathematics Informatics Information science Design optimization Design automation

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Hemodynamic Responses during Simulated Automobile Driving in a Monotonous Situation

Hemodynamic Responses during Simulated Automobile Driving in...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： T. Yamakoshi K. Yamakoshi S. Tanaka M. Nogawa Y. Sawada P. Rolfe Graduate School of Natural Science & Technology Kanazawa University Kanazawa Japan Institute of Nature and Environmental Technology Kanazawa University Kanazawa Japan Department of Human and Mechanical Systems Engineering Kanazawa University Kanazawa Japan Faculty of Medicine Sapporo Medical University Sapporo Japan Department of Communication Computer & System Science University of Geneva Genoa Italy

Long hours of automobile driving under monotonous situations may cause the lowering of what we term a driver's activation state (DAS) or in other words the production of drowsiness, resulting in an increased risk of a traffic accident. There is therefore a need to create a newly advanced system focused on the DAS in-car, hopefully thus avoiding potentially dangerous situations. In order to develop such a system as a final goal, we have firstly set out to acquire such cardiovascular variables as beat-by-beat blood pressure (BP), RR interval from ECG and normalized pulse volume (NPV) used as a peripheral vascular tone of alpha-adrenergic sympathetic activity, during presentation to the driver of a screen movie simulating monotonous travel at constant speed on a test-course. Subsequently, we have investigated the reactivity in terms of the driver's cardiovascular hemodynamics. Through the successful monitoring of cardiovascular parameters during the movie presentation obtained in 11 healthy male subjects, the following results were obtained: The monotonous driving produces a statistically significant gradual rise in BP following drowsiness, which could be explained by enhancement of sympathetic activity using a time-frequency analysis of BP and RR. This finding strongly indicates that continuous driving in such monotonous situations can make a driver considerably stressful and thus may cause a gradual increase in BP, and that this gradual BP increase may be used as a possible index relevant to the DAS. This finding was also confirmed by the analysis of NPV, suggesting that the gradual increase in BP during the monotonous driving would be rather caused by a regulation of peripheral vasomotor constriction

关键词： Hemodynamics Automobiles Cardiology Motion pictures Production Road accidents Blood pressure Biomedical monitoring Electrocardiography system testing

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Generalized particle model for problem-solving in multi-agent systems

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Jisuanji Xuebao/Chinese Journal of computers 2006年第5期29卷 740-750页

作者： Shuai, Dian-Xun Wang, Xing Feng, Xiang Department of Computer Science and Engineering East China University of Science and Technology Shanghai 200237 China State Key Laboratory of Intelligence Technology and System Tsinghua University Beijing 100084 China

This paper is devoted to a generalized particle model (GPM) approach to distributed problem-solving in MAS, which transforms the optimization problem of resource assignments and task allocations of MAS in complex environment into the kinematics and dynamics in GPM. The complex environment in MAS that the proposed GPM approach may deal with includes: A variety of interactions randomly and concurrently occurring among agents;different personality and autonomy of distinct agents;different life-cycle period, congestion degree and failure rate for distinct entities in MAS. At first, the relation between the GPM and MAS in the context of distributed problem-solving is expatiated. Then the mathematical-physical formalization for GPM and the parallel algorithm GPMA are presented. The basic properties of the GPMA algorithm, including the feasibility, convergency and stability, are discussed. Through a number of simulation experiments and comparisons related to resource assignments and task allocations in MAS in complex environment, the authors demonstrate many advantages of the proposed GPM approach over other coalition methods for MAS problem-solving in terms of the parallelism and the suitability for complex environment.

关键词： Multi agent systems

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Data mining algorithm based on genetic algorithm and its application

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Harbin Gongcheng Daxue Xuebao/Journal of Harbin engineering University 2006年第SUPPL.期27卷 384-388页

作者： Zhang, Xi-Zheng Xing, Li-Ning Wu, Xi Department of Computer Science Hunan Engineering Institute Xiangtan 411101 China School of Information System and Management National University of Defense Technology Changsha 410073 China

The study of job shop scheduling is of great significance in theory and realism. This paper presents novel data mining algorithms for the extraction of knowledge from a large set of job shop schedules. The purposes of this work is to apply data mining methodologies to explore the patterns in the data generated by a genetic algorithm performing a scheduling operation and to develop a rule set scheduler which approximates the genetic algorithm's scheduler. These rules can duplicate the genetic algorithm's performance on an identical problem and provide solutions that are generally superior to a simple dispatching rule for similar problems. At the end of this paper, the experimental results have shown that the proposed approach has good performance with respect to the quality of solution and the speed of computation.

关键词： Genetic algorithms

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