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Lecture Notes in computer science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2000年 1803卷 6-6页

作者： Cagnoni, Stefano Poli, Riccardo Li, Yun Smith, George Corne, David Oates, Martin Hart, Emma Lanzi, Pier Luca Boers, Egbert J. W. Paechter, Ben Fogarty, Terence C. University of Parma Department of Computer Engineering Parco delle Scienze 181/a Parma Italy The University of Birmingham School of Computer Science Edgbaston Birmingham United Kingdom University of Glasgow Electronics and Electrical Engineering Rankine Building Glasgow United Kingdom University of East Anglia Department of Information Systems Norwich United Kingdom University of Reading P.O. Box 225 Whiteknights Reading United Kingdom BT Labs at Adastral Park Dept. Complex Systems Laboratory Martlesham Heath Suffolk United Kingdom University of Edinburgh Division of Informatics 80 South Bridge Edinburgh United Kingdom Milan Polytechnic Department of Electronics and Informatics Piazza Leonard0 da Vinci 32 Milan Italy National Aerospace Laboratory NLR Data and Knowledge Systems Dept I.C.T. Division Anthony Fokkerweg 2 Amsterdam Netherlands Napier University School of Computing 219 Colinton Road Edinburgh United Kingdom South Bank University School of Computing Information Systems and Mathematics 103 Borough Road London United Kingdom

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Boundary extraction of moving objects from image sequence

Boundary extraction of moving objects from image sequence

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1999 IEEE Region 10 Conference, TENCON 1999

作者： Rhee, P.K. La, C.W. Dept. of Computer Science and Engineering Inha University Incheon Korea Republic of Research Institute of Technology NAC Information Systems Incheon Korea Republic of

ISBN: (纸本)0780357396

In this paper we address a new approach of contour extraction of moving objects using active contours in an image sequence. Both the spatial convolution process and the external boundary tracing algorithm (EBTA) are used to resolve the problem of automatically locating the initial contour for the external boundaries of an object in the image. Ongoing directions where the contour moves are decided by one of three directions instead of eight directions. We could reduce the time complexity of the energy minimizing operation of the contour by considering only three ongoing directions. In order to apply the proposed algorithm to consecutive imagery, a Kalman filter, an optimal parameter estimator, is adopted. The algorithm extracts the contour of an object from only two consecutive images and takes 0.36 seconds of CPU time. © 1999 IEEE.

关键词： Extraction

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Performance evaluation of the multimedia router with MPEG-2 video traffic 3rd

Performance evaluation of the multimedia router with MPEG-2 ...

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3rd International Workshop on Communication, Architecture and Applications for Network-based Parallel Computing , CANPC 1999

作者： Caminero, Blanca Quiles, Francisco J. Duato, José Love, Damon S. Yalamanchili, Sudhakar Dept. of Computer Science Escuela Politécnica Superior de Albacete Universidad de Castilla La ManchaAlbacete02071 Spain Dept. of Information Systems and Computer Architecture Universidad Politécnica de Valencia P.O.B. 22012 Valencia46071 Spain School of Electrical and Computer Engineering Georgia Institute of Technology AtlantaGA30332-0250 Georgia

ISBN: (纸本)3540659153

The Multimedia Router (MMR) architecture is aimed at providing QoS to multimedia traffic in a local area environment, while retaining a compact and simple design. In this paper, we show some preliminary performance evaluation results. The workload was composed of a mix of synthetic CBR traffic and semi-synthetic VBR traffic. The latter was obtained from real MPEG-2 video sequences. We show that, with a simple scheduling algorithm, amenable for single-chip implementation, the link bandwidth utilization is quite satisfactory, while still providing acceptable delays to both CBR and VBR traffic. © Springer-Verlag Berlin Heidelberg 1999.

关键词： Scheduling algorithms

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Multithreaded LOGFLOW on KUMP/D 2nd

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2nd International Symposium on High Performance Computing, ISHPC 1999

作者： Németh, Zsolt Tomiyasu, Hiroshi Kacsuk, Péter Amamiya, Makoto MTA Computer and Automation Research Institute P.O.Box 63 BudapestH-1518 Hungary Dept. of Intelligent Systems Graduate School of Information Science and Electrical Engineering Kyushu University 6-1 Kasuga-koen Kasuga Fukuoka816 Japan

ISBN: (纸本)3540659692

The exploited parallelism offered by logic programming languages is usually categorized as OR-parallelism and AND-parallelism. Another dimension could be the level of functionality where the parallelism is exploited. In this paper a novel approach is described where the parallelism is utilized at thread level. There are two cornerstones in the project. Implementing a macro dataflow model on a hybrid dataflow/von Neumann multithreaded architecture promises an efficient hardware support. Furthermore, by utilizing the features of a multithreaded architecture, remote memory accesses without significant loss of performance allow a new way of variable handling. Both the MPAM (Multithreaded Prolog Abstract Machine) and the physical machine KUMP/D, where the system is going to be implemented, are presented here. © 1999, Springer-Verlag. All rights reserved.

关键词： Data flow analysis

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A Flexible Model for Retrieval of SGML Documents 98

A Flexible Model for Retrieval of SGML Documents

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21st Annual International ACM SIGIR Conference on Research and Development in information Retrieval, SIGIR 1998

作者： Myaeng, Sung Hyon Jang, Dong-Hyun Kim, Mun-Seok Zhoo, Zong-Cheol Dept. Computer Science Chungnam National University TaeJon Korea Republic of Information Retrieval Lab Systems Engineering Research Institute Taejon Korea Republic of

ISBN: (纸本)9781581130157

In traditional information retrieval (IR) systems. a document as a whole is the target for a query. With increasing interests in structured documents like SGML documents, there is a growing need to build an LR system that can retrieve parts of documents, which satisfy not only content-based but also structure-based requirements. In this paper, we describe an inference-net-based approach to this problem. The model is capable of retrieving elements at any level in a principled way, satisfying certain containment constraints in a quety. Moreover, lvhile the model is general enough to reproduce the ranking strategy adopted by conventional document retrieval systems.by making use of document and collection level statistics such as TF and IDF, its flexibility allows for incorporation of a variety of pragmatic and semantic information associated with document structures. We implemented the model and ran a series of experiments to show that, in addition to the added functionality, the use of the structural information embedded in SGML documents can improve the effectiveness of document retrieval, compared to the case where no such information is used. We also show that giving a pragmatic preference to a certain element tape of the SGML documents can enhance retrieval effectiveness. © 1998 ACM.

关键词： SGML

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Differential cryptanalysis of a block cipher 3rd

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3rd Australasian Conference on information Security and Privacy, ACISP 1998

作者： Yi, Xun Lam, Kwok Yan Han, Yongfei Dept. of Information Systems and Computer Science National University of Singapore Lower Kent Ridge Road 119260 Singapore Cemplus Technologies Asia PTE LTD The Rutherford 118261 Singapore

In this paper differential cryptanalysis of a secret-key block cipher based on mixing operations of different algebraic groups is treated. The results show the cipher is resistant to differential attack. © Spring... 详细信息

ISBN: (纸本)3540647325

关键词： Cryptography

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Numerical Modelling of Control Time-Delay System

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IFAC Proceedings Volumes 1998年第13期31卷 155-159页

作者： O.B. Kwon A.V. Kim V.G. Pimenov Kyung Sung College Computer Science Dept. Shitl Prong-Ri 131 Pochun-Gun Kyung-Kido Seoul Korea Control Information Systems Laboratory School of Electrical Engineering Seoul National University Seoul 151-742 Korea Ural State University Turgenev Str. 4 Ekaterinburg 620083 Russia

Discrete-time control schemes are often used for realization of positional control strategies for continuous time control problems (Krasovskii and Subbotin, 1974; Osipov, 1971) . However for general systems.with delays (whicb are often called functional differential equations (FDE)) exact solutions in both continuous and discrete schemes can be found in exceptional cases. So, as rule, it is necessary to solve corresponding control problems using suitable numerical algorithms . In surveys (Cryer and Tavernini, 1972; Hall and watt, 1976; Bellen, 1985) different numerical methods for FDE are discussed. In this paper positional implicit Runge-Kutta-like numerical methods of solving general FDE are presented. The elaborated methods are direct analogs of the corresponding numerical methods of ODE case. Also we present new theorem (which generalizes the results of (Kim and Pimenov, 1997; Kim and Pimenov, 1998)) on convergence order. The obtained results are based on distinguishing of finite dimensional and infinite dimensional components in the structure of FDE, on interpolation and extrapolation of the discrete prehistory of the model, on application of constructions of i- smooth analysis (Kim, 1996) . The notion of an approximation order for an optimal strategy in the discrete scheme of realization is introduced. The conditions, which guarantee required approximation order of the optimal strategy, are presented.

关键词： Delay positional control discretization Runge-Kutta metbod implicit systems accuracity

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Royal Academy of Medicine in Ireland - Section of Bioengineering - Proceedings of meeting held in Dundalk, Co. Louth, in February 1998.

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IRISH JOURNAL OF MEDICAL science 1998年第4期167卷 256-276页

作者： [Anonymous] Orthopaedic Research Unit The Queen’s University of Belfast School of Biomedical Sciences The Queen’s University of Belfast Howmedica International Ltd. Raheen Industrial Estate Limerick Department of Mechanical Engineering Trinity College Dublin 2 Mater Hospital Dublin 7 Orthopaedic Research Laboratory Århus University Hospital Denmark University of Limerick Limerick Limerick Regional Hospital Raheen Limerick Boston Scientific Ireland Ltd. Galway Department of Mechanical Engineering University College Dublin Dublin Department of Electrical and Electronic Engineering University College Dublin Dublin Bioengineering Research Centre Department of Mechanical Engineering University College Dublin Dublin Northern Ireland Bio-Engineering Centre (NIBEC) School of Electrical and Mechanical Engineering University of Ulster Newtownabbey Department of Mechanical & Manufacturing Engineering The Ashby Building The Queen’s University of Belfast Johnson and Johnson Professional Orthopaedic Division Queensway England Department of Cardiology and Department of Medical Physics & Bioengineering St. James’s Hospital Dublin 8 Burke House Ellison Street Castlebar Royal College of Surgeons in Ireland Department of Surgery Beaumont Hospital Dublin Department of Electronic and Electrical Engineering Trinity College Dublin 2 Department of Aeronautical Engineering The Queen’s University of Belfast Vascular Unit Belfast City Hospital Department of Medical Physics and Bioengineering St. James’s Hospital Dublin 8 Centre for Biomedical Electronics Department of Electronic and Computer Engineering University of Limerick Limerick Department of Mechanical and Aeronautical Engineering University of Limerick Limerick School of Health Sciences University of Ulster Ireland School of Physiotherapy University of Ulster Newtownabbey Clinical Engineering NI Medical Physics Agency Belfast and Radiology Royal Victoria Hospital Musgrave Park Hospital University of Limerick Biomedical Institute (ULBMI) Uni

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Success factors for software reuse that are applicable across domains and businesses 97

Success factors for software reuse that are applicable acros...

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1997 ACM Symposium on Applied Computing, SAC 1997

作者： Rine, David C. Dept. of Computer Science and Information and Software Systems Engineering School of Information Technology and Engineering George Mason University Fairfax VA United States

ISBN: (纸本)0897918509

The problem researched is that there presently does not exist a set of success factors which are common across organizations and have some predictability relationship to software reuse. For completeness, this research also investigated possible predictive relationships between software reuse and both productivity and quality. A 1995 survey was conducted to determine the state-of-the-practice. The data from the survey was statistically analyzed to evaluate the relationships among reuse capability, productivity, quality, and the individual software reuse success factors. The results of the analysis showed some of the success factors to have a predictive relationship to software reuse capability. Software reuse capability also had a predictive relationship to productivity and quality. Based on the research results, the leading indicators of software reuse capability are: product-line approach, architecture which standardizes interfaces and data formats, common software architecture across the product-line, design for manufacturing approach, domain engineering, management which understands reuse issues, software reuse advocate(s) in senior management, state-of-the-art tools and methods, precedence of reusing high level software artifacts such as requirements and design versus just code reuse, and trace end-user requirements to the components (systems. subsystems. and/or software modules) which support them. © 1997 ACM.

关键词： computer software reusability

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Application of artificial neural networks to historical data analysis for short-term electric load forecasting

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EUROPEAN TRANSACTIONS ON ELECTRICAL POWER 1997年第1期7卷 49-56页

作者： Caciotta, M Lamedica, R Cencelli, VO Prudenzi, A Sforna, M Maurizio Caciotta (1945) has been Associate Professor of Electrotechnical Elements at Calabria University Italy. since 1978. Then hejoincd the University of Rome “La Sapienza” Italy. where he has been Associate Professor of Electrical Measurements since 1985. Since I99 1 he has been Associate Professor at the Third University of Rome. His main interests= in the field ofparallel computing and of neural network applications to information processing and data analysis. (Dept. of Electronic Engineering Terza Universitl di Roma. Via C. Segre 2. 1-00146 Romdltaly Tel +396/5599 779. Fax +396/5561373) Regina Lamedica (1952) received the doctor degree in Electrical Engineering from the University of Bologna. Italy. in 1976. She has joined the University of Rome “La Sapienza” where she has been Assistant Professor in Electric Power Systems since 1978 and Associate Professor in Electric Power Systems for Tnnsponation since 1987. Her main interests are in computer applications to Electrified Transportation Systems and to Power Systems analysis. She is a member of ClFI (Italian Railway Engineers Association) and of AEI (Italian Electrical Association). (Dept. of Electrical Engineering. University of Rome “La Sapienza” Via Eudossiana 18 1-00184 Romdltaly. Tel +396/44585808 Fax + 39614 88 32 35) Valentino Orsolini Cencelli (1963) received the degree in Electronic Engineering from the University of Rome “LaSapienza”. Since 1992hejoined the Third University of Rome where he is a Ph.D. student. His main interest are in parallel computing and in neunl networks applications to Measurement Science. (Dept. of Electronic En ' oineerinp. Terza Universiti di Roma Via C. Segre2 I-00146Roma/ltaly Tel+396/5599779 Fax++396/5561 373) Alberto Prudenzi (1961) received the degree and the Ph.D. degree in Electrical Engineering from the University of Rome “La Sapienza” respectively in I987 and 1993. In I988 he joined Dept. of Electrical Engineering of the University of Rome where since 1992 he has been Assistant Professor in Electrica

The paper illustrates two different Artificial Neural Networks (ANN) architectures for electric Short-Term Load Forecasting (STLF). Two multi-layer perceptron ANN using the back-propagation learning algorithm have been implemented which provide different, although complementary, forecasting approaches (static and dynamic). In order to test the potentialities of the architectures implemented, the ANN have been applied to the Short-Term Forecasting of Italian hourly electric load. The importance of this load (peak demands up to about 38 000 MW) requires tools for STLF which must be as more accurate and precise as possible. This fact has imposed the adoption of some algorithmic enhancements to the basic back-propagation algorithm formulation. Since an adequate formulation of the influence exerted on hourly electric load by the main meteorological and climatic factors is nor known at present, the data set used for ANN training phase has concerned only historical series of electric hourly demand. The paper illustrates the two ANN architectures as well as the computational platforms used for implementation, Finally, some results obtained from the application of the two ANN to the short-term forecasting of Italian electric load relevant to three different weeks of the year 1993 are comparatively reported.

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