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检索条件"机构=Computer Science and Technology Unit"

共 2169 条记录，以下是2011-2020 订阅

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A pulse wave velocity measurement system using USB

A pulse wave velocity measurement system using USB

引用

3rd International Conference on Computing, Communications and Control Technologies, CCCT 2005

作者： Wu, Hsien-Tsai Lin, Chia-Hsin Chen, Hsuan-Kuang Wang, Ming-Chun Tsai, Wei-Chuan Department of Computer Science and Information Engineering Southern Taiwan University of Technology Taiwan Department of Internal Medicine Cardiologist National Cheng Kung University Medical Center China Department of Internal Medicine Division of Nephrology and Dialysis Unit National Cheng Kung University Medical Center China

ISBN: (纸本)9806560485

Pulse wave velocity (PWV) is the most popular index to assess the arterial stiffness. Recently, several non-invasive examination methods with single channel for PWV are announced. This paper proposes a non-invasive digital volume pulse (DVP) measuring system using a dual channel simultaneous measurement method[1] and tries to meet the demands for home healthcare equipment which is easy to operate. Through synchronal technical in measuring DVP signals from finger and toe can achieve more precise time and substantially reduces the time spend in measurement procedures. On the other hand, the proposed system developed an algorithm to locate the "Foot of the wave" without facilitating of electrocardiogram (ECG). In terms of device and computer data transmission, this paper adopts communication interface Universal Serial Bus(USB), In spite of the advantage of USB interface, RS-232 is gradually out of use and USB can only be found to be used in the notebooks. Such fact causes doctors' inconvenience to carry notebooks and PWV around to measure artery sclerosis. The paper, hence, combines USB communication interface and PWV device, in hopes of maximizing the user-friendly function of such device.

关键词： Electrocardiograms

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From BEEVT to DLR- NSF supported engineering education projects at virginia tech

From BEEVT to DLR- NSF supported engineering education proje...

引用

2005 ASEE Annual Conference and Exposition: The Changing Landscape of Engineering and technology Education in a Global World

作者： Lohani, Vinod K. Sanders, Mark Wildman, Terry Connor, Jeff Mallikarjunan, Kumar Dillaha, Theo Muffo, John Knott, Tamara W. Lo, Jenny Loganathan, G.V. Adel, Greg Wolfe, M.L. Goff, Richard Gregg, Mike Chang, Mike Agblevor, Foster Vaughan, David Cundiff, John Fox, Ed Griffin, Hayden Magliaro, Sue Department of Engineering Education Department of Technology Education Center for Excellence in Undergraduate Teaching United States Biological Systems Engineering United States Academic Assessment Unit Civil and Environmental Engineering Mining and Minerals Engineering United States Computer Science School of Education Virginia Polytechnic Institute State University Blacksburg United States

This paper briefly discusses the motivating factors that led to formation of an active collaborative group of engineering and education faculty at Virginia Tech. This group is actively pursuing a number of engineering education research activities and has been successful in winning two grants from the NSF in first 12 months of their collaborative efforts. These collaborative activities are targeted at improving engineering pedagogy at Virginia Tech and began with a planning grant from the NSF in September 2003. A 15-month Masters/Licensure program has been developed specifically for licensing engineering graduates in technology Education. A number of assessment activities have been initiated for analyzing curricular changes beginning with the freshman-engineering program. Use of electronic portfolio in engineering instruction is being explored. The curricula of freshman engineering and bioprocess engineering are being reformulated using a theme based spiral curriculum approach, which is part of a major research grant, under the Department-level reform program of the NSF, that began in September '04. The interdisciplinary group has developed/ is working on a number of research proposals for expanding the scope of ongoing studies. The information presented should be very useful for new engineering educators who are exploring similar collaborative ventures elsewhere.

关键词： Engineering education

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NIPPERS: network of interpolated PeERS for Web service discovery

NIPPERS: network of interpolated PeERS for Web service disco...

引用

International Conference on Information technology: Coding and Computing (ITCC)

作者： C. Makris E. Sakkopoulos S. Sioutas P. Triantafillou A. Tsakalidis B. Vassiliadis Computer Engineering & Informatics Department University of Patras Patras Greece Internet and Multimedia Technologies Research Unit RA Computer Technology Institute Patras Greece Computer Science Digital Systems & Media Computing Laboratory Hellenic Open University Patras Greece

Web services are becoming an important enabler of the semantic Web. Besides the need for a rich description mechanism, Web service information should be made available in an accessible way for machine processing. In this paper, we propose a new P2P based approach for Web services discovery. Peers that store Web services information, such as data item descriptions, are efficiently located using a scalable and robust data indexing structure for peer-to-peer data networks, NIPPERS. We present a theoretical analysis which shows that the communication cost of the query and update operations scale double-logarithmically with the number of NIPPERS nodes. Furthermore, we show that the network is robust with respect to failures fulfilling quality of Web services requirements.

关键词： Web services Peer to peer computing Robustness Costs Interpolation Tree data structures Web and internet services Multimedia systems Multimedia computing Informatics

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A digital filter design for digital re-sampling in power system applications

A digital filter design for digital re-sampling in power sys...

引用

IEEE General Meeting Power& Energy Society

作者： Qing Zhao Yifang Hsu Bei Guo Jing Zhao Wireless Terminal Business Unit (WTBU) Texas Instruments Incorporated Dallas TX USA Electrical Engineering Department University of Texas at Arlington Arlington TX USA Computer Science Department Shanghai University of Science and Technology Shanghai China

ISBN: (纸本)0780391578

Digital filters are designed to provide both satisfied magnitude and linear phase responses for digital re-sampling in power system applications in this paper. The design consists of two steps: magnitude approximation and group delay compensation. It compromises between the amount of calculation needed to implement the filters and the performance of the filters, which makes the filters good candidates for both real-time and offline applications.

关键词： Digital filters Power systems Data acquisition Costs Substations Monitoring Power industry Low voltage Delay Digital signal processing

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Autonomous video-on-demand system for heterogeneous quality levels to achieve high assurance

Autonomous video-on-demand system for heterogeneous quality ...

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International Symposium on Autonomous Decentralized Systems (ISADAS)

作者： M. Kanda M. Tasaka Xiaodong Lu I. Luque Jiang Yanqing K. Moriyama R. Takanuki Y. Kuba Solution Development Laboratories Research and Development Unit NEC Corporation Limited Japan Department of Computer Science Tokyo Institute of Technology Meguro Tokyo Japan Software Division Hitachi and Limited Yokohama Japan

Video streaming services that provide heterogeneous video quality are required because the usage environments are diverse and changing dynamically. Considering the characteristics of the application, services must be distributed without stopping the service or deteriorating video quality. In order to achieve that, though the volume of the video data is too huge, it is necessary to reduce total storage volume and transmission quantity. In this paper, autonomous video-on-demand system architecture for heterogeneous quality levels and an evaluation method of service reliability are proposed. In this system, we employ layered video streaming data and distribute each layered video stream data in different servers. The system, streams the data from multiple sources to the users, assuring a reliable transmission. The evaluation shows the effectiveness of the proposal.

关键词： Streaming media Information systems Proposals IP networks Web and internet services computer science Software quality Laboratories National electric code Network servers

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Comparison of two different approaches to detect perceptual noise for mpeg-4 aac

Comparison of two different approaches to detect perceptual ...

引用

5th Pacific Rim Conference on Multimedia, PCM 2004

作者： Yu, Cheng-Hsun You, Shingchern D. Network Video Business Unit AVerMedia Technologies Inc 7-10F 135 Jian-Yi Rd. Chung-Ho cityTaipei Hsien Taiwan Department of Computer Science and Information Engineering National Taipei University of Technology 1 Sec. 3 Chung-Hsiao East Rd Taipei106 Taiwan

ISBN: (纸本)9783540239772

The MPEG-4 AAC introduces a new tool called Perceptual Noise Substitution (PNS) whose function is to use locally generated noise to replace the noise inside the coded music. The key issue to the PNS tool relies on the correctly detect the perceptual noise. In this paper, we point out the potential problem of the approach suggested in the ISO’s document and compare it with the other approach, proposed by the original contributors of the PNS concept, and discuss their relative performance. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Motion Picture Experts Group standards

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A data mining based approach for the EEG transient event detection and classification

A data mining based approach for the EEG transient event det...

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Annual IEEE Symposium on computer-Based Medical Systems

作者： T.P. Exarchos A.T. Tzallas D.I. Fotiadis S. Konitsiotis S. Giannopoulos Unit of Medical Technology and Intelligent Information Systems Department of Computer Science University of Ioannina (UoI) Ioannina Greece Biomedical Research Institute-FORTH Ioannina Greece Department of Neurological Clinic University Hospital of Ioannina Ioannina Greece

An automated methodology which detects transient events in EEG recordings and classifies those as epileptic spikes, muscle activity, eye blinking activity and sharp alpha activity is presented. It is based on data mining algorithms and includes four stages: (I) EEG preprocessing and transient events detection, (II) clustering of transient events and feature extraction, (III) feature discretization and (IV) association rule mining and classification. The methodology is evaluated using a dataset of 25 EEG recordings and the obtained overall accuracy is 84.35%. The major advantage of our approach is that it is able to provide interpretation for the decisions made since it is based on a set of association rules.

关键词： Data mining Electroencephalography Event detection Epilepsy Feature extraction Association rules Brain Muscles Medical diagnostic imaging Intelligent systems

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Development of a dual robotic system for upper-limb stroke rehabilitation

Development of a dual robotic system for upper-limb stroke r...

引用

IEEE International Conference on Rehabilitation Robotics (ICORR)

作者： P. Culmer A. Jackson R. Richardson B. Bhakta M. Levesley A. Cozens Department of Mechanical Engineering University of Leeds Leeds UK Department of Computer Science University of Manchester Institute of Science and Technology Manchester UK Academic Unit of Musculoskeleta and Rehabilitation Medicine Faculty of Health University of Leeds Leeds UK Department of Rehabilitation Medicine NHS Grampian Aberdeen UK

Stroke is a common condition resulting in 30,000 people per annum left with significant disability. In patients with severe arm paresis after stroke, functional recovery in the affected arm is poor. Inadequate intensity of treatment is cited as one factor accounting for the lack arm recovery found in some studies. Given that physical therapy resource is limited, strategies to enhance the physiotherapists' efforts are needed. One approach is to use robotic techniques to augment movement therapy. Kinematic analysis of upper limb movement during a patient's physiotherapy session was used to determine the appropriate therapeutic workspace. An existing single robot arm is adapted to optimize its operating area to allow full movement in this desired workspace. The kinematic data is also used to look at the constraints involved in attaching two robot arms to the user's forearm and upper arm. An optimized design and configuration of the dual robot arms is proposed that allows appropriate control of the patient's arm throughout the desired workspace.

关键词： Rehabilitation robotics Medical treatment Service robots Mechanical engineering Prototypes Joining processes Manipulators Kinematics Design optimization Electronic mail

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Learning a Nonlinear Multi-Scale Edge Detection System from Natural Stimuli

Learning a Nonlinear Multi-Scale Edge Detection System from ...

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the 2nd Shanghai International Symposium on NOnlinear science and Applications(Shanghai NSA'05)(第2届上海非线性科学及其应用学术会议)

作者： Michael Gutmann Aapo Hyv(a)rinen Kazuyuki Aihara ERATO Aihara Complexity Modelling Project JST 45-18 Oyama Shibuya-ku Tokyo 151-0065 Japan Dept.of Mathematical Informatics Grad.School of Information Science and Technology The University of Tokyo HIIT Basic Research Unit and Dept.of Computer Science University of Helsinki Finland Dept.of Mathematical Informatics Grad.School of Information Science and Technology The University of Tokyo

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On the selection of appropriate control system design methodologies

On the selection of appropriate control system design method...

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作者： Van Willigenburg, L.G. De Koning, W.L. Chalabi, Z.S. Tchamitchian, M. Van Straten, G. Systems and Control Group Wageningen University P.O. Box 17 6700 AA Wageningen Netherlands Faculty of Electrical Engineering Delft University of Technology Mathematics and Computer Science Mekelweg 4 2628 CD Delft Netherlands Public and Environmental Health Research Unit London School of Hygiene and Tropical Medicine University of London Keppel Street London WC1E 7HT United Kingdom INRA Bioclimatologie Domaine StPaul Site Agroparc Cedex 9 84914 Avignon France

ISBN: (纸本)008045108X

We will argue in this paper that the nature and magnitude of model uncertainty dictate the appropriateness of the control system design methodology. To obtain these arguments, we will pursue optimality of the control system design. Note this is a philosophical paper, in which we present our arguments in qualitative terms. We will identify the circumstances under which several control system design methodologies are appropriate. The design methodologies that will be considered are (1) optimal control and optimal feedback design, (2) model predictive control (receding horizon control), (3) active and passive adaptive control and (4) robust control. Robust control strategies are conservative and limit the possible improvements that can be obtained over say classical PID control. However, it will turn out that for certain types of control problems, improvements in performance are indeed limited. Roughly speaking, the area where we may expect (significant) improvement from advanced (optimal) control system design is very much limited by the uncertainty of the systems model. Miracles are not to be expected from advanced control. What can be expected is reflected in an active adaptive optimal control scheme introduced and discussed in this paper. Copyright © 2005 IFAC.

关键词： Robust control

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