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International Workshop on Active Middleware Services

作者： M. Agarwal V. Bhat H. Liu V. Matossian V. Putty C. Schmidt G. Zhang L. Zhen M. Parashar B. Khargharia S. Hariri The Applied Software Systems Laboratory Department of Electrical and Computer Engineering State University of New Jersey Rutgers USA High Performance Distributed Computing Laboratory Department of Electrical and Computer Engineering University of Arizona Tucson USA

The increasing complexity, heterogeneity and dynamism of networks, systems, services applications have made our computational/information infrastructure brittle, unmanageable and insecure. This has necessitated the investigation of a new paradigm for design, development and deployment based on strategies used by biological systems to deal with complexity, heterogeneity, and uncertainty, i.e. autonomic computing. This paper introduces the AutoMate project and describes its key components. The overall objective of AutoMate is to investigate key technologies to enable the development of autonomic grid applications that are context aware and are capable of self-configuring, self-composing, self-optimizing and self-adapting. Specifically, it will investigate the definition of autonomic components, the development of autonomic applications as dynamic composition of autonomic components, and the design of key enhancements to existing grid middleware and runtime services to support these applications.

关键词： Biology computing Application software Context awareness Middleware Grid computing Laboratories Distributed computing computer networks Biological systems Uncertainty

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Dynamic belief revision operators

Dynamic belief revision operators

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作者： Nayak, Abhaya C. Pagnucco, Maurice Peppas, Pavlos Department of Computing Division of Information and Communication Sciences Macquarie University NSW 2109 Australia Artificial Intelligence Laboratory School of Computer Science and Engineering University of New South Wales Sydney NSW 2052 Australia AIT-Athens Information Technology 19.5km Markopoulo Avenue Peania 19002 Athens Greece

The AGM approach to belief change is not geared to provide a decent account of iterated belief change. Darwiche and Pearl have sought to extend the AGM proposal in an interesting way to deal with this problem. We show that the original Darwiche-Pearl approach is, on the one hand excessively strong and, on the other rather limited in scope. The later Darwiche-Pearl approach, we argue, although it addresses the first problem, still remains rather permissive. We address both these issues by (1) assuming a dynamic revision operator that changes to a new revision operator after each instance of belief change, and (2) strengthening the Darwiche-Pearl proposal. Moreover, we provide constructions of this dynamic revision operator via entrenchment kinematics as well as a simple form of lexicographic revision, and prove representation results connecting these accounts. © 2003 Elsevier science B.V. All rights reserved.

关键词： Entrenchment kinematics Iterated belief change Lexicographic revision Unary revision

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Real-time embedded system support for the BTeV level 1 muon trigger

Real-time embedded system support for the BTeV level 1 muon ...

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2003 IEEE Nuclear science Symposium Conference Record - Nuclear science Symposium, Medical Imaging Conference

作者： Haney, Michael J. Beauregard, D. Iyer, R. Kalbarczyk, Z. Liu, Q. Wang, L. Haney, M. Selen, M. Mosse, D. Shigiltchoff, O. Chopade, R. Hovey, L. Jung, M. Messie, D. Oh, J. Stone, S. Bapty, T. Neema, S. Nordstrom, S. Shetty, S. Vashishtha, S. Yao, D. Sheldon, P. Vaandering, E. Butler, J. Gottschalk, E. Kowalkowski, J. Votava, M. Appel, J. University of Illinois Urbana IL 61801 United States Des./Validation Reliable N.S.R.G. University of Illinois High Energy Physics Group Department of Physics University of Illinois Department of Computer Science Coll. in High Sch. Educ. Program University of Pittsburgh Department of Electrical Engineering Syracuse University High Energy Physics Group Department of Physics Syracuse University Inst. for Software Intgd. Systems Vanderbilt University Department of Physics BTeV Group Vanderbilt University BTeV Collaboration Particle Physics Division Fermi Natl. Accelerator Laboratory Computing Division Fermi Natl. Accelerator Laboratory Fermilab Education Office Fermi Natl. Accelerator Laboratory

The Level 1 Muon Trigger subsystem for BTeV will be implemented using the same architectural building blocks as the BTeV Level 1 Pixel Trigger: pipelined field programmable gate arrays feeding a farm of dedicated processing elements. The muon trigger algorithm identifies candidate tracks, and is sensitive to the muon charge (sign);candidate dimuon events are identified by complementary charge track-pairs. To insure that the trigger is operating effectively, the trigger development team is actively collaborating in an independent multi-university research program for reliable, self-aware, fault adaptive behavior in real-time embedded systems (RTES). Key elements of the architecture, algorithm, performance, and engineered reliability are presented.

关键词： Embedded systems

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Advances in simulated modeling of vibration systems based on computational intelligence

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自然科学进展(英文版) 2002年第12期12卷 881-886页

作者： LIANG Yanchun LEE Heow Pueh LIN Wuzhong LIM Siak Piang LEE Kwok Hong Zhou Chunguang College of Computer Science and Technology Jilin University Changchun 130012 China Institute of High Performance Computing Singapore 117528 Key Laboratory of Intelligent Information Processing Institute of Computing Technology Chinese Academy of Sci Institute of High Performance Computing Singapore 117528 Department of Mechanical Engineering National University of Singapore Singapore 119260 Singapore College of Computer Science and Technology Jilin University Changchun 130012 China

Computational intelligence is the computational simulation of the bio-intelligence, which includes artificial neural networks, fuzzy systems and evolutionary computations. This article summarizes the state of the art in the field of simulated modeling of vibration systems using methods of computational intelligence, based on some relevant subjects and the authors' own research work. First, contributions to the applications of computational intelligence to the identification of nonlinear characteristics of packaging are reviewed. Subsequently, applications of the newly developed training algorithms for feedforward neural networks to the identification of restoring forces in multi-degree-of-freedom nonlinear systems are discussed. Finally, the neural-network-based method of model reduction for the dynamic simulation of microelectromechanical systems (MEMS) using generalized Hebbian algorithm (GHA) and robust GHA is outlined. The prospects of the simulated modeling of vibration systems using techniques of computational intelligence are also indicated.

关键词： computational intelligence artificial neural network fuzzy system evolutionary computation vibration system

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Preface

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Lecture Notes in computer science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2003年 2659卷 V-VI页

作者： Sloot, Peter M. A. Abramson, David Bogdanov, Alexander V. Dongarra, Jack J. Zomaya, Albert Y. Gorbachev, Yuriy E. University of Amsterdam Informatics Institute Section of Computational Science Kruislaan 403 Amsterdam Netherlands Monash University School of Computer Science and Software Engineering Wellington Road ClaytonVIC Australia Institute for High-Performance Computing and Information Systems Fontanka emb. 6 St. Petersburg Russia University of Tennessee and Oak Ridge National Laboratory Computer Science Dept. 1122 Volunteer Blvd. KnoxvilleTN United States The University of Sydney School of Information Technologies CISCO Systems Madsen Building F09 SydneyNSW Australia

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Circuit/wavelength switching and routing

Circuit/wavelength switching and routing

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International Conference on Telecommunications (ConTEL)

作者： S. De Maesschalck D. Colle B. Puype Q. Yan M. Pickavet P. Demeester T. Cinkler S. Tomic C. Mauz M. Ljolje M. Lackovic R. Inkret B. Mikac M. Kohn C.M. Gauger D. Schupke S. Sanchez-Lopez X. Masip-Bruin J. Sole-Pareta M. Mattiello Department of Information Tecltnology (INTEC) IMEC Ghent University Ghent Belgium High-speed New. Lab. Dept. of Telecomm. & Telematics Budapest University of Technology and Economics Budapest Hungary Institute of Communication Networks (IKN) Vienna Austria Communication Technology Laboratory ETH Zurich Zurich Switzerland Faculty of Electrical Engineering and Computing Zagreb Croatia Institute of Comm. Networks and Computer Eng. (IKR) University of Stuttgart Stuttgart Germany Institute of Communication Networks Munich University of Technology Munich Germany Department ď Arquitectura de Computadors Universitat Politecnica de Catalunya Barcelona Spain Laboratoire des Téléconununications EPF-Lausanne Lausanne Switzerland

This paper gives an overview of the work carried out during the course of the COST-266 action on circuit/wavelength switched network studies. Several subjects are discussed in detail in this paper. A first important topic deals with the different control plane models in single- and multidomain networks. A second important issue is the routing and wavelength assignment problem, both in networks with static and dynamic traffic demands. Also the IP-over-OTN network architecture, envisaged to be the network architecture most suited for future transport networks, is discussed. Finally the study on optical virtual private networks is presented.

关键词： Switching circuits Wavelength routing Optical fiber networks Optical packet switching Telecommunication switching computer networks Wavelength assignment Virtual private networks Telecommunication computing high speed optical techniques

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Runtime support for multigrain and multiparadigm parallelism

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9th International Conference on high performance computing, HiPC 2002

作者： Hadjidoukas, Panagiotis E. Polychronopoulos, Eleftherios D. Papatheodorou, Theodore S. High Performance Computing Information Systems Laboratory Department of Computer Engineering and Informatics University of Patras Rio Patras26500 Greece

ISBN: (纸本)3540003037

This paper presents a general methodology for implementing on clusters the runtime support for a two-level dependence-driven thread model, initially targeted to shared-memory multiprocessors. The general ideal is to exploit existing programming solutions for these architectures, like Software DSM (SWDSM) and Message Passing Interface. The management of the internal runtime system structures and of the dependence-driven multilevel parallelism is performed with explicit messages, exploiting however the shared-memory hardware of the available SMP nodes whenever this is possible. The underlying programming models and hybrid programming solutions are not excluded, using threads for the intra-node parallelism. The utilization of shared virtual memory for thread stacks and a translator for allocating Fortran77 common blocks in shared memory enable the execution of unmodified OpenMP codes on clusters of SMPs. Initial performance results demonstrate the efficient support for fork-join and multilevel parallelism on top of SWDSM and MPI and confirm the benefits of explicit, though transparent, message passing. © Springer-Verlag Berlin Heidelberg 2002.

关键词： Message passing

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A web-based Problem Solving Environment for solution of option pricing problems and comparison of methods

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International Conference on Computational science, ICCS 2002

作者： Koulisianis, Minas D. Tsolis, George K. Papatheodorou, Theodore S. High Performance Information Systems Laboratory Computer Engineering and Informatics Department University of Patras 26500 Patras Greece

ISBN: (纸本)3540435913

In this paper we present a Problem Solving Environment (PSE) for solving option pricing problems and comparing methods used for this purpose. An open underlying library of methods has been developed to support the functionality of the proposed PSE. PHP, a server-side, cross-platform, HTML embedded scripting language, is exploited to make the proposed environment available through the World Wide Web. The PSE is not addressed to expert users only. It is simple in use, fast and interactive, proposing dynamically selections depending on user's input. The output is returned in "real time", in either simple or graphical representation. © 2002 Springer-Verlag Berlin Heidelberg.

关键词： Problem solving

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Robust parallel ILU preconditioning techniques for solving large sparse matrices 16

Robust parallel ILU preconditioning techniques for solving l...

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16th International Parallel and Distributed Processing Symposium, IPDPS 2002

作者： Shen, Chi Zhang, Jun Laboratory for High Performance Scientific Computing and Computer Simulation Department of Computer Science University of Kentucky 773 Anderson Hall LexingtonKY40506-0046 United States

ISBN: (纸本)0769515738

We discuss issues related to domain decomposition and multilevel preconditioning techniques which are often employed for solving large sparse linear systems in parallel computations. We implement a parallel preconditioner for solving general sparse linear systems based on a two level block ILU factorization strategy. We give some new data structures and strategies to construct a local coefficient matrix and a local Schur complement matrix on each processor. The preconditioner constructed is fast and robust for solving certain large sparse matrices. Numerical experiments show that our domain based two level block ILU preconditioners are more robust and more efficient than some published ILU preconditioners based on Schur complement techniques for parallel sparse matrix solutions. © 2002 IEEE.

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Polygonal mesh simplification with face color and boundary edge preservation using quadric error metric 4

Polygonal mesh simplification with face color and boundary e...

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4th International Symposium on Multimedia Software engineering, MSE 2002

作者： Fahn, Chin-Shyurng Chen, Hung-Kuang Shiau, Yi-Haur Department of Computer Science and Information Engineering National Taiwan University of Science and Technology Taipei106 Taiwan Department of Electronic Engineering National Taiwan University of Science and Technology Taipei106 Taiwan Software and Development Division National Center for High-Performance Computing Hsinchu300 Taiwan

ISBN: (纸本)0769518575

In applications such as scientific and medical visualization, highly detailed polygonal meshes are needed. Rendering these polygonal meshes usually exceeds the capabilities of graphics hardware. To improve rendering efficiency and maintain proper interactivity, the polygonal mesh simplification technique is commonly used to reduce the number of polygons of the mesh and construct a multiresolution representation. We propose a new and simple constraint scheme based on the quadric error metric proposed by Garland and Heckbert (1997, 1998) to preserve face colors and boundary edges during the simplification process. In addition, our method generates progressive meshes that store the polygonal mesh in a continuous multi-resolution representation. According to our experimental results, this new method is successful in preserving face colors and boundary edges. Moreover, we compare the latency of resolution changes for progressive meshes of various models. © 2002 IEEE.

关键词： Color

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