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The Centre for Advanced Studies: A model for applied research and development

IBM Systems Journal 1994年第3期33卷 382-398页

作者： J. Slonim M. A. Bauer P. -A. Larson J. Schwarz C. Butler E. B. Buss D. Sabbah IBM Software Solutions Division Centre for Advanced Studies Toronto Laboratory IBM Canada Limited North York ONT Canada Department ofComputer Science University of Western Ontario London ONT Canada Department of Computer Science University of Waterloo Waterloo ONT Canada BM Software Solutions Division Toronto Laboratory IBM Canada Limited North York ONT Canada IBM Software Solutions Division Software Engineering Process Group Toronto Laboratory IBM Canada Limited North York ONT Canada IBM Software Solutions Division Somers NY

The Centre for Advanced Studies (CAS) is an applied research centre formed in 1990 within the IBM Toronto software Solutions Laboratory. Its primary aim is to facilitate the transfer of research ideas into the various product groups of the laboratory. Although we are still learning how to make CAS operate more effectively, and it is too early to assess its long-term success, the model for CAS has proved to be workable. The primary partners, namely the IBM Toronto software Solutions Laboratory, the IBM research community, universities in North America, and government agencies that support collaborative research, have found it a viable approach. As an overview, this essay provides some background to the formation of the centre, describes some of the challenges deemed important in defining the role of the centre, identifies a number of principles that are used to guide its formation and current operation, and reports on its progress. We conclude with a discussion of some lessons learned in the operation of the centre to date and identify future activities and directions for the centre.

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RBF growing algorithm applied to the equalization and co-channel interference rejection problem

RBF growing algorithm applied to the equalization and co-cha...

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International Joint Conference on Neural Networks (IJCNN)

作者： I. Howitt J.H. Reed V. Vemuri T.C. Hsia Department of Electrical & Computer Engineering University of California Davis CA USA Mobile and Portable Radio Research Group Bradley Department of Electrical Engineering Virginia Polytechnic Institute and State University Blacksburg VA USA Department of Applied Science University of California Livermore CA USA

Recently the RBF network has been successfully applied to a number of communication signal processing problems, including equalization and co-channel interference rejection. Determining the number and locations of the centers is an important but usually neglected issue. A growing RBF algorithm for determining the number and location of the centers is presented and the performance is compared to a RBF with prescribed centers. The growing algorithm's advantages are its limited need for prior information and its ability to better utilize the allocated centers. As an example, the growing algorithm reduced the number of centers by more than a factor of 2/sup 31/ over the prescribed method to achieve a desired performance for an equalization and interference rejection application.< >

关键词： Interchannel interference Signal processing algorithms Clustering algorithms Radial basis function networks Vector quantization computer networks Feeds Neural networks Parameter estimation State-space methods

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An industry perspective on computer science accreditation (abstract) 94

An industry perspective on computer science accreditation (a...

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Proceedings of the twenty-fifth SIGCSE symposium on computer science education

作者： John Impagliazzo J. Dennis Bjornson Dennis J. Frailey Jeanette Horan Gerald H. Thomas Chair ACM Accreditation Committee Department of Computer Science Hofstra University Senior Manager Corporate Compensation Boeing Corporation Technical Director Software Improvement Program Texas Instruments Corporation Vice President Engineering Open Software Foundation Director Cellular Infra Group Motorola Corporation

No abstract available.

ISBN: (纸本)9780897916462

No abstract available.

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A standard simulation environment: a review of preliminary requirements 94

A standard simulation environment: a review of preliminary r...

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Simulation Winter Conference

作者： M.A.F. Wagner S. Sevinc O. Tanir P.L. Haigh J.D. Arthur R.E. Nance H.D. Schwetman SysTech Software Solutions Annandale VA USA Knowledge Systems Group Basser University of Sydney Australia Quality Engineering and Research (QER) Group Longueuil QUE Canada High Performance Software Inc. Dayton OH USA Systems Research Center Department of Computer Science Virginia Polytechnic Institute and State University Blacksburg VA USA Mesquite Software Inc. Austin TX USA

ISBN: (纸本)9780780321090

The concept of a simulation environment combines different aspects of the simulation process into one complete powerful tool. The environment should provide the necessary state-of-the-art advances and concepts that a modeler may require during the simulation development and execution process. The "environment" requirements must address the end user needs while minimizing the necessity of learning a new language. The requirements must specify the useful features, independent of different platforms and implementation languages. Hence the opportunity exists for standardization of environments. The paper opens a discussion on challenges and rewards awaiting the simulation community with the advent of a standard environment.

关键词： Power system modeling Computational modeling computer simulation Standardization Knowledge based systems Australia Knowledge engineering software performance Drives computer science

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A software tool for investigating optical signal processing

A software tool for investigating optical signal processing

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Conference on Lasers and Electro-Optics Europe (CLEO EUROPE)

作者： J.G. Keating J. Halligan K. Adamson D.J. Gleeson S.M.P. McKema-Lawlor M. Klima Software Tools Group Department of Computer Science St. Patrick's College Maynooth Co. Kildare Ireland Faculty of Informatics University of Ulster Shore Road Newtownabbey Co. Antrim BT37 OQB Northern Ireland Space Technology (Ireland) Ltd. Industrial Park St. Patrick's College Maynooth Co. Kildare Ireland Department of Radioelectronics Faculty of Electrical Engineering Czech Technical University 166 27 Praha 6 Czech Republic

Classical signal processing functions such as spectrum analysis, correlation, convolution, filtering, mixing, and noise reduction can be performed optically using optical signal processing devices and systems. The signal media, i.e., light waves, not only have a higher information-carrying capacity than electrical wires, but may pass through each other without interference, thus providing an increased interconnection capacity. This property facilitates improved communication and ease of reconfiguration between processing elements in highly parallel optical computing architectures.1

关键词： software tools Optical signal processing High speed optical techniques Thyristors Optical saturation Optical interconnections Logic circuits Photonics Electron optics Hardware

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The impact of an Ada run-time system’s performance characteristics on scheduling models 12th

The impact of an Ada run-time system’s performance characte...

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12th Ada-Europe International Conference, 1993

作者： Burns, A. Wellings, A.J. Hutcheon, A.D. Real-time and Distributed Systems Research Group Department of Computer Science University of York United Kingdom York Software Engineering Ltd United Kingdom

ISBN: (纸本)9783540568025

When analysing hard real-time systems for their performance properties, most scheduling models either ignore the timing characteristics of the underlying run-time support kernel entirely or have a very simple model of its behaviour. However, when engineering an actual implementation, it is necessary to tailor the scheduling theory so that the actual performance characteristics of the run-time system are adequately addressed. Failure to do this may result in a "guaranteed" task missing its deadline. In this paper we investigate an actual Ada run-time kernel and give performance measures for clock handling and delay queue manipulation. The impact these measures have on the scheduling models are discussed. © Springer-Verlag Berlin Heidelberg 1993.

关键词： Real time systems

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Study of Defects in Multilayer Reflective Coatings for Soft X-ray Projection Lithography Mask

Study of Defects in Multilayer Reflective Coatings for Soft ...

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Soft X-Ray Projection Lithography, SXRAY 1993

作者： Nguyen, Khanh B. Nguyen, Tai D. Wong, Alfred K. Neureuther, Andrew R. Attwood, David T. Department of Electrical Engineering and Computer Science University of California Berkeley Center for X-ray Optics Lawrence Berkeley Laboratory MS 2-400 1 Cyclotron Road BerkeleyCA94720 United States Department of Material Science and Mineral Engineering Applied Science and Technology Graduate Group Center for X-ray Optics Lawrence Berkeley Laboratory University of California BerkeleyCA94720 United States Department of Electrical Engineering and Computer Science University of California BerkeleyCA94720 United States Center for X-ray Optics Lawrence Berkeley Laboratory University of California BerkeleyCA94720 United States

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Traffic characteristics of the T1 NSFNET backbone

Traffic characteristics of the T1 NSFNET backbone

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

作者： K.C. Claffy G.C. Polyzos H.-W. Braun Department of Computer Science and Engineering University of California La Jolla USA Applied Network Research Group San Diego Supercomputer Center San Diego CA USA

The results of a measurement study of the T1 NSFNET backbone are presented. The measurement environment and the approach to data collection are discussed. Measurements results are then presented for: long-term growth in traffic volume, including attribution to domains and protocols; trends in average packet size on the network, over both long- and medium-term intervals; most popular sources, destinations, and site pairs; traffic locality; international distribution of traffic; mean utilization statistics of the overall backbone as well as of specific links of interest: and delay statistics.< >

关键词： Spine Telecommunication traffic Volume measurement Size measurement Statistical distributions ARPANET Protocols Instruments computer science Bones

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STATISTICAL PROCESS-CONTROL FOR software IN THE MAINTENANCE PHASE

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NAVAL ENGINEERS JOURNAL 1993年第3期105卷 192-200页

作者： LUKE, SR JACOBS, DA REED, BM Stephen R. Luke:is a registered professional engineer in the Commonwealth of Virginia. He received his B.S. in mechanical engineering from Virginia Polytechnic Institute in 1983 and is presently pursuing a master's degree in engineering management at Old Dominion University. Mr. Luke is experienced as a test engineer at the Norfolk Naval Shipyard (1978–1989) and as a reliability/quality engineer at the Naval Undersea Warfare Center Detachment Norfolk (1989-Present). Currently he is the group leader of the RMA/QA group for the AN/SQQ-89(V) Antisubmarine Warfare System at Naval Undersea Warfare Center Detachment Norfolk. Mr. Luke is a member of ASNE IEEE (Reliability Society) and ASQC and is an ASQC certified quality engineer and reliability engineer. Derya Alasya Jacobs:is an assistant professor in the Engineering Management Department at Old Dominion University (ODU). She has a B.S. in computer science and an M.S. and Ph.D in engineering management from the University of Missouri-Rolla. Prior to joining ODU Dr. Jacobs worked as a research engineer at the Center for Technology Transfer and Economic Development at the University of Missouri-Rolla. During the same period she served as a consultant in software development for Missouri Enterprise Rolla Missouri. Dr. Jacobs' research interests are in the areas of applied artificial intelligence decision support systems operations research and computer integrated manufacturing. Billie M. Reed:is an assistant professor in the Engineering Management Department at Old Dominion University. He received a B.S. degree in mechanical engineering from Auburn University in 1971. After completing undergraduate studies Dr. Reed was commissioned as an officer in the U.S. Navy where he served in the nuclear submarine force until 1982. Following his military career Dr. Reed worked for nine years as a systems engineer and human-machine interface designer of complex interactive computer based systems for use in aircraft space and ship systems. He received his M.S. and Ph

As technology advances and our dependency on software increases, the requirement to develop the correct means to improve quality in both the deveiopment phase and the maintenance phase of software life cycle support becomes increasingly significant. The focus of this paper is on the dilemma facing software engineering in maintaining quality within the constraints of the maintenance phase. The paper further proposes that the software maintenance process can also be analvzed and improved using statistical process control (SPC) techniques. The methods discussed in this paper have been proposed for use in the software Maintenance project at NUWC Detachment Norfolk. Upon successful testing at NUWC Detachment Norfolk, they will be forwarded to the AN/SQQ-89(V) (interagencv) software Quality Evaluation Committee for use by other agencies which are developing and maintaining AN/SQQ-89(V) software.

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An approach to the direct analysis of transient stability

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European Transactions on Electrical Power 1993年第3期3卷 241-248页

作者： Djukanovic, M.B. Sobajic, D.J. Pao, Y.‐H. Miodrag B. Djukanovic (1959) received his B.S. M.Sc. and Ph.D. degrees in Electrical Engineering from the University of Belgrade/Yugoslavia in 1982 1985 and 1992 respectively specializing in electric power systems. In 1984 he joined the Electrical Engineering Institute “Nikola Tesla” in Belgrade where he was working on the scientific studies in the field of power systems planning operation and control. In 1985 and 1990 he was appointed as a research scholar at the Royal Institute of Technology Stockholm and Case Western Reserve University Cleveland Ohio. His major in- terests are in the area of power system analysis steady-state and dynamic security and application of neural networks in electric power systems. (Electrical Engineering Institute “Nicola Tesla” ul. Koste Glavinica 8A YU-11000 Belgrad T +3811/2351-619 Fax + 3811/2351-823) Dejan J. Sobajic (1949) received the B.S.E.E. and the M.S.E.E. degrees from the University of Belgrade/Yugoslavia in 1972 and 1976 respectively and the Ph.D. degree from Case Western Reserve University Cleveland Ohio in 1988. At present he is with the Department of Electrical Engineering and Applied Physics Case Western Reserve University Cleveland. He is also the Engineering Manager of A1 WARE Inc. Cleveland. His current research interests include power system operation and control neuralnet systems and adaptive control. He is a member of the IEEE Task Force on Neural-Network Applications in Power Systems and of the IEEE Intelligent Controls Committee. He is the Chairman of the International Neural-Networks Society Special Interest Group on Power Engineering. (Case Western Reserve University Department of Electrial Engineering and Computer Sciences Glennan Building Ohio 44 106 USA T + 1216/421-2380 Fax +1216/368-8776) Yoh-Han Pao (1922) has been a Professor of Electrical Engineering and Computer Science at Case Westem Reserve University (CWRU) Cleveland Ohio since 1967. He has served as chairman of the University's Electrical Engineering Department

The Transient Energy Function (TEF) method has been intensely investigated over the last decade as a reliable and accurate tool for transient stability assessment of multimachine power systems. In this paper we propose the Potential Energy Boundary Surface (PEBS) based method for direct analysis of transient stability. The critical value of transient energy and the Critical Clearing Time (T_CCT) are evaluated without the need for successive calculation and memorization of the system kinetic and potential energy values along the sustained fault trajectory. The method is used for determination of output features in the training phase of the neural‐net based transient security assessment. The proposed approach is tested on the well‐known ten‐generator New England test system demonstrating the validity and accuracy of obtained results. Copyright © 1993 John Wiley & Sons, Ltd.

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