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Congress on Evolutionary Computation

作者： Yukiko Orito Shota Sugizaki Hisashi Yamamoto Yasuhiro Tsujimura Yasushi Kambayashi Graduate School of Social Sciences Hiroshima University Higashihiroshima Hiroshima Japan Graduate School of System Design Tokyo Metropolitan University Hino Tokyo Japan Department of Computer and Information Engineering Nippon Institute of Technology Saitama Japan

The portfolio optimization/rebalancing problem is to determine a proportion-weighted combination in a portfolio in order to achieve certain investment targets. For this problem, many researchers have used various evolutionary methods and models such as genetic algorithms and simulated annealing. On the other hand, the portfolio optimization/rebalancing problem can be viewed as a multi-dimensional problem because its solution is a proportion-weighted combination for the given assets. The previous works, however, have not taken into account the multi-dimensional aspect of the problem. In order to approach this problem from the multi-dimensional aspect, we propose a model based on the probabilistic model-building genetic algorithm with narrower width histograms (PMBGA-NWH), and then apply it to optimize the constrained index funds with the given rebalancing cost in this paper. In the numerical experiments, we show that our model has better ability to make optimal index funds than the traditional genetic algorithm (GA).

关键词： Indexes Portfolios Probabilistic logic Correlation Optimization Histograms Numerical models

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Case Studies on Transition Fault Test Generation for At-speed Scan Testing

Case Studies on Transition Fault Test Generation for At-spee...

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IEEE International Symposium on Defect and Fault Tolerance in VLSI systems

作者： Nor Azura Zakaria Edward V. Bautista Jr. Suhaimi Bahisham Jusoh Weng Fook Lee Xiaoqing Wen Microelectronics Technology Realisation and Operations MIMOS Berhad Kuala Lumpur Malaysia Emerald Systems Design Center Penang Malaysia Department of Creation Informatics Graduate School of Computer Science & System Engineering Kyushu Institute of Technology Iizuka Japan

At-speed scan testing for intra-clock and inter-clock transition delay faults in a SOC design with multiple clock domains is an important and challenging issue. Current practice in industry usually applies a test scheme targeted on intra-clock transition fault delay testing (i.e., intra testing). In this paper a test scheme targeting both intra-clock and inter-clock domains for transition delay fault testing (i.e., intra-inter testing) is applied. This paper presents an empirical study by comparing between intra testing and intra-inter testing in terms of fault classification, test detection, test coverage, test volume, and test power by using industrial circuits. The information provided by this paper is beneficial to both practitioners and researchers in their pursuit of improving the quality of transition delay testing, which is critical to the quality of deep-sub micron VLSI chips.

关键词： Clocks Circuit faults Delay Synchronization Logic gates Automatic test pattern generation

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A blind approach to identification of Hammerstein systems

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Lecture Notes in Control and Information Sciences 2010年 404卷 293-312页

作者： Wang, Jiandong Sano, Akira Chen, Tongwen Huang, Biao Department of Industrial Engineering and Management College of Engineering Peking University Beijing 100871 China Department of System Design Engineering Keio University 3-14-1 Hiroshi Kohoku-ku Yokohama 223-8522 Japan Department of Electrical and Computer Engineering University of Alberta Edmonton AL T6G 2V4 Canada Department of Chemical and Materials Engineering University of Alberta Edmonton AL T6G 2G6 Canada

ISBN: (纸本)9781849965125

Hammerstein systems form a class of block-oriented nonlinear models, where a static nonlinearity precedes a linear dynamic system. There exist a large number of works on the topic of identification of Hammerstein systems in the literature. The methods of Hammerstein identification can be classified as the ten methods in Section 3.9 of [7] or the four groups in Chapter 1 of [8]. © 2010 Springer London.

关键词： Linear control systems

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Science and engineering study on impact resistance of PC12 cells

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Journal of Biomechanical Science and engineering 2010年第2期5卷 119-128页

作者： Zhang, Yuelin Aomura, Shigeru Furuse, Kiyoto Kakuta, Akira Fujiwara, Satoshi Nasu, Ayako Graduate School of System Design Tokyo Metropolitan University 6-6Asahigaoka Hino-shi Tokyo 191-0065 Japan Mechanical and Computer System Engineering Tokyo National College of Technology 1220-2Kunugidamachi Hatiohji-shi Tokyo 193-0997 Japan Forensic Science and Pathophysiology Graduate School of Medicine Yokohama City University 3-9Fukuura Kanazawa-ku Yokohama 236-0004 Japan

In this study, the effects of a dynamic strain in the cytotoxicity and mortality of the PC12 cell line were evaluated by using impact experiment with huge acceleration. In order to consider the influence of axonal damage on nerve cells, 2 types of nerve cells were used for the impact experiments, i.e. with and without axons. The cytotoxicity and mortality of cells were evaluated by the input acceleration, strain and strain rate and the strain rate seemed to be the most appropriate to evaluate the cytotoxicity and mortality of cells. Cells with axons showed higher cytotoxicity and mortality than cells without axons, when the strain rate was larger than 13.11 (1/s). Damage to axons was confirmed by terminal swellings and beadings of the axons. These data indicated that the presence of axons increased the cytotoxicity and mortality of cells. Copyright © 2010 by JSME.

关键词： Strain rate

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Dynamic property evaluations of full-scale 4-story steel frame using parallel FE-analysis

Dynamic property evaluations of full-scale 4-story steel fra...

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9th US National and 10th Canadian Conference on Earthquake engineering 2010, Including Papers from the 4th International Tsunami Symposium

作者： Kohiyama, M. Ohsaki, M. Miyamura, T. Onda, K. Isobe, D. Akiba, H. Hori, M. Kajiwara, K. Ine, T. Dept. of System Design Eng. Keio University Yokohama 223-8522 Japan Dept. of Architecture and Architectural Eng. Kyoto University Kyoto 615-8540 Japan Dept. of Computer Science College of Eng. Nihon University Koriyama 963-8642 Japan Allied Engineering Corporation Minato-ku Tokyo 105-0014 Japan Graduate School of Systems and Information Eng. University of Tsukuba Tsukuba 305-8573 Japan Earthquake Research Institute University of Tokyo Bunkyo-ku Tokyo 113-0032 Japan Hyogo Earthquake Engineering Research Center National Research Institute for Earth Science and Disaster Prevention Miki 673-0515 Japan

ISBN: (纸本)9781617388446

The project of E-Simulator is under way at Hyogo Earthquake engineering Research Center (E-Defense) of National Research Institute of Earth Science and Disaster Prevention (NIED), Japan, which facilitates the world's largest shaking table. The E-Simulator uses the parallel finite element (FE) analysis software package called ADVENTYRECluster (ADVC) as a platform. In this study, we report the results of high-precision FE-analysis for simulation of collapse behavior of the 4-story steel building frame that is the specimen of the full-scale total collapse shaking-table test conducted in September 2007 at E-Defense. It is shown that elastoplastic dynamic responses can be estimated with good accuracy using a high-precision FE-analysis without resort to macro models such as plastic hinge and composite beam effect.

关键词： Finite element method

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Making applications more intelligent: A case study of optimizing route selection for emergency vehicles

Making applications more intelligent: A case study of optimi...

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2009 22nd IEEE International Symposium on computer-Based Medical systems, CBMS 2009

作者： Pohorec, Sandi Verlic, Mateja Zorman, Milan Laboratory for System Design Faculty of Electrical Engineering and Computer Science University of Maribor Slovenia

ISBN: (纸本)9781424448784

We present the results of a data mining research on the use of GPS positions and speed of travel of vehicles in urban areas to determine optimal travel routes for emergency vehicles. A new approach using predictive programming is presented. The approach focuses on using data mining of existing data as the key factor in the application logic where various decisions are to be made. The main appeal of such an approach is that the application logic evolves over time according to the application data. As the data changes the decisions soon follow. This gives the impression of intelligent behavior of the application. Copy;2009 IEEE.

关键词： Data mining

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Impedance control for force - Reflecting teleoperation with communication delays based on IOS small gain theorem

Impedance control for force - Reflecting teleoperation with ...

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ICROS-SICE International Joint Conference 2009, ICCAS-SICE 2009

作者： Do, Nam Duc Namerikawa, Toru Division of Electrical Engineering and Computer Science Kanazawa University Japan Department of System Design Engineering Keio University Japan

ISBN: (纸本)9784907764333

This paper focuses on a new proposal system input of impedance control that relates to force reflection (FR) scheme of teleoperation with time varying in communication lines. To improve the tracking performance and transparency, the control algorithm uses one more communication channel to transfer the FR information from the master side to the slave side. Using variable damping values, the contact stability is achieved at the time while the slave robot contacts with the environment. In this work, the input-to-output stability (IOS) small gain approach is used to show the overall force-reflecting teleoperation to be input-to-state stable (ISS). Several experimental results show the effectiveness of our proposed algorithm. © 2009 SICE.

关键词： Slave robots

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Evaluation of mouse and touch input for a tabletop display using Fitts' reciprocal tapping task

Evaluation of mouse and touch input for a tabletop display u...

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53rd Human Factors and Ergonomics Society Annual Meeting 2009, HFES 2009

作者： Sasangohar, Farzan MacKenzie, I. Scott Scott, Stacey D. Dept. of System Design Engineering University of Waterloo Canada Dept. of Computer Science and Engineering York University Canada

ISBN: (纸本)9781615676231

User performance with a tabletop display was tested using touch-based and mouse-based interaction in a traditional pointing task. Dependent variables were throughput, error rate, and movement time. In a study with 12 participants, touch had a higher throughput with average of 5.53 bps compared to 3.83 bps for the mouse. Touch also had a lower movement time on average, with block means ranging from 403 ms to 1051 ms vs. 607 ms to 1323 ms with the mouse. Error rates were lower for the mouse at 2.1%, compared to 9.8% for touch. The high error rates using touch were attributed to problems in selecting small targets with the finger. It is argued that, overall, touch input is a preferred and efficient input technique for tabletop displays, but that more research is needed to improve touch selection of small targets.

关键词： Errors

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Evaluation of Mouse and Touch Input for a Tabletop Display Using Fitts' Reciprocal Tapping Task

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Proceedings of the Human Factors and Ergonomics Society Annual Meeting 2009年第12期53卷 839 - 843页

作者： Farzan Sasangohar I. Scott MacKenzie Stacey D. Scott Dept. of System Design Engineering University of Waterloo Dept. of Computer Science and Engineering York University

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A smartphone-centric platform for personal health monitoring using wireless wearable biosensors

A smartphone-centric platform for personal health monitoring...

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7th International Conference on Information, Communications and Signal Processing, ICICS 2009

作者： Lam, Stephen Chiu Kwok Wong, Kai Lap Wong, Kwok On Wong, Wenxiu Mow, Wai Ho Wireless IC System Design Center HKUST Fok Ying Tung Graduate School Nansha China Dept. of Electronic and Computer Engineering Hong Kong University of Science and Technology Hong Kong

ISBN: (纸本)9781424446575

The body area sensor network is widely regarded as a key technology that holds promise of enabling low-cost healthcare to be accessible to the fast growing aging sector of the population. The popularity of smartphones with their open operating systems provides a powerful platform for developing very low-cost personalized healthcare applications. In addition to the requirement of low cost, the limited battery life and the implementation of bio-signal processing software in resource-constrained smartphone platforms are two practical challenges. In this work, we present the design and implementation considerations of such a smartphone-centered platform for low-cost continuous health monitoring based on commercial-off-the-shelf wireless wearable biosensors, which are anticipated to proliferate in the market in the near future. As a case study, this platform approach has been implemented utilizing photoplethysmographic biosensors and different smartphones to measure heart rate, breathing rate, oxygen saturation, and estimate obstructive sleep apnea. The two aforementioned practical challenges have been addressed in detail from a system-level design perspective. The case study result confirms the many advantages of the suggested system, including the closed loop control capability, portability and upgradability. ©2009 IEEE.

关键词： Smartphones

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