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REQUIREMENTS FOR AN EVENT-BASED SIMULATION PACKAGE FOR GRID systems

Journal of Interconnection Networks 2007年第2期8卷 163-178页

作者： FATOS XHAFA JAVIER CARRETERO LEONARD BAROLLI ARJAN DURRESI Polytechnic University of Catalonia Department of Languages and Informatics Systems C/Jordi Girona 1-3 08034 Barcelona Spain . Polytechnic University of Catalonia Department of Computer Architecture C/Jordi Girona 1-3 08034 Barcelona Spain Department of Information and Communication Engineering Fukuoka Institute of Technology (FIT) 3-30-1 Wajiro-higashi Higashi-ku Fukuoka 811-0295 Japan Department of Computer Science Louisiana State University 298 Coates Hall Baton Rouge LA 70803 USA

In this paper we present a study on the requirements for the design and implementation of simulation packages for Grid systems. Grids are emerging as new distributed computing systems whose main objective is to manage and allocate geographically distributed computing resources to applications and users in an efficient and transparent manner. Grid systems are at present very difficult and complex to use for experimental studies of large-scale distributed applications. Although the field of simulation of distributed computing systems is mature, recent developments in large-scale distributed systems are raising needs not present in the simulation of the traditional distributed systems. Motivated by this, we present in this work a set of basic requirements that any simulation package for Grid computing should offer. This set of functionalities is obtained after a careful review of most important existing Grid simulation packages and includes new requirements not considered in such simulation packages. Based on the identified set of requirements, a Grid simulator is developed and exemplified for the Grid scheduling problem.

关键词： Grid systems event-based simulation requirements scheduling

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Comparison of seven approaches for holter ECG clustering and classification

Comparison of seven approaches for holter ECG clustering and...

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29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBS 2007), vol.10

作者： Vaclav Chudacek Milan Petrik George Georgoulas Miroslav Cepek Lenka Lhotska Chrysostomos Stylios Gerstner laboratory at Department of Cybernetics Czech Technical University Czech Republic Czech Republic Department of Cybernetics Center for Machine Perception Czech Technical University Czech Republic Intelligent Control Systems Laboratory Georgia Technology Research Institute Atlanta USA Czech Republic Department of Computer Science and Engineering Neural Computing Group Czech Technical University Czech Republic Czech Republic Department of Cybernetics Gerstner Laboratory Czech Technical University Czech Republic Department of Informatics and Communications Technology TEI Epirus Artas Greece

In this work we present a comparative study, testing selected methods for clustering and classification of holter electrocardiogram (ECG). More specifically we focus on the task of discriminating between normal 'N' beats and premature ventricular 'V' beats. Some of the tested methods represent the state of the art in pattern analysis, while others are novel algorithms developed by us. All the algorithms were tested on the same datasets, namely the MIT-BIH and the AHA databases. The results for all the employed methods are compared and evaluated using the measures of sensitivity and specificity.

关键词： Electrocardiography Testing Decision trees Laboratories Cybernetics Sensitivity and specificity Heart rate variability Clustering algorithms Spatial databases Computational complexity

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On the Calibration of Abstract Performance Models for System-level Design Space Exploration

On the Calibration of Abstract Performance Models for System...

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International Conference on Embedded computer systems: architectures, Modeling and Simulation (IC-SAMOS)

作者： Andy D. Pimentel Mark Thompson Simon Polstra Cagkan Erbas Computer Systems Architecture group Informatics Institute University of Amsterdam Amsterdam Netherlands

High-level performance modeling and simulation has become a key ingredient of system-level design as they facilitate early architectural design space exploration. An important precondition for such high-level modeling and simulation methods is that they should yield trustworthy performance estimations. This requires validation (if possible) and calibration of the simulation models, which are two aspects that have not yet been widely addressed in the system-level community. This paper presents an initial attempt to provide support for calibrating various model components of a system-level performance model. We discuss these model calibration mechanisms in the context of our Sesame system-level simulation framework. An illustrative case study is also presented to indicate the merits of model calibration

关键词： Calibration System-level design Space exploration computer architecture Context modeling Predictive models Computational modeling Embedded system Documentation Virtual prototyping

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Combining WS-policy and aspect-oriented programming

Combining WS-policy and aspect-oriented programming

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Advanced International Conference on Telecommunications andInternational Conference on Internet and Web Applications and Services, AICT/ICIW'06

作者： Ortiz, Guadalupe Leymann, Frank Quercus Software Engineering Group University of Extremadura Computer Science Department Spain Institute of Architecture of Application Systems University of Stuttgart Germany

ISBN: (纸本)0769525229

Web Service technologies offer a successful way for interoperability among applications. However, although current approaches are beginning to address how to specify non-functional capabilities in Web Services at description level, they have so far failed to propose an acceptable method to decouple the named capabilities from Web Service implementations, resulting in a large amount of code scattered and tangled all over the application. Considering it is our desire to minimize middleware participation in nonfunctional properties management, it is the aim of this paper to describe how aspect-oriented techniques can be used in conjunction with WS-Policy in order to allow the mentioned properties to be completely decoupled at description and implementation level, thus improving their reusability and service maintenance and evolution. © 2006 IEEE.

关键词： Telecommunication services

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Waters network's potential to transform environmental engineering education

Waters network's potential to transform environmental engine...

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114th Annual ASEE Conference and Exposition, 2007

作者： Eschenbach, Elizabeth Montgomery, Jami Johnson, James Brus, Chris Carlson, Patricia Giammar, Dan Grauer, Bette Hotaling, Liesl Oguntimein, Gbekeloluwa Safferman, Steven Wentling, Tim Humboldt State University United States Department of Environmental Resources Engineering Humboldt State University United States WATERS Network - CLEANER Project Office Network Howard University United States Department of Environmental Engineering College of Engineering Architecture and Computer Sciences Howard University United States American Academy of Environmental Engineers United States University of Iowa United States Program University of Iowa United States Rose-Hulman Institute of Technology United States Department of Rhetoric Rose-Hulman Institute of Technology United States National Research Council U. S. Air Force United States NASA's Classroom of the Future Wheeling WV United States Washington University United States Department of Energy Environmental and Chemical Engineering Washington University St. Louis United States Environmental Studies Program Center for Materials Innovation United States McPherson High School United States McPherson High School McPherson KS United States Stevens Institute of Technology United States Stevens Institute of Technology United States Morgan State University United States Michigan State University United States Biosystems and Agricultural Engineering Department Michigan State University United States University of Dayton United States Education Planning Committee National Center for Supercomputing Applications United States Department of Information Science Graduate School of Library and Information Science National Center for Supercomputing Applications University or Illinois United States Knowledge and Learning Systems Group NCSA United States

The WATERS Network (WATer and Environmental Research systems Network) will be an integrated real-time distributed observing system which will enable academic and government scientists, engineers, educators, and practitioners to advance effective management of our nation's water resources by understanding human interactions with water and the natural and built environment. WATERS will provide easily accessible real time environmental data as well as analysis tools to engineers, scientists, educators, K- graduate students and policymakers so they can better understand how water quantity, quality and related components of the hydrologic cycle are impacted by natural and human influences. The WATERS strategic plan will be completed by July 2007 and requires constituent input. This paper describes the draft Conceptual Design and the Education Plan of WATERS Network. This paper will highlight the potential impact of WATERS on undergraduate and graduate environmental engineering education in order to elicit input from the environmental engineering education community on how WATERS Network could better meet the future needs of undergraduate and graduate students and educators. More information can be found at ***. © American Society for Engineering Education, 2007.

关键词： Water resources

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Tool-supported analysis of clinical processes

Tool-supported analysis of clinical processes

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4th IASTED International Conference on Biomedical Engineering

作者： Chimiak-Opoka, Joanna Giesinger, Gunnar Breu, Ruth Saboor, Samrend Ammenwerth, Elske Quality Engineering Research Group Institute for Computer Science University of Innsbruck Innsbruck Austria Institute for Health Information Systems University for Health Science Medical Informatics and Technology Hall Tirol Austria

ISBN: (纸本)0889865787

The main goal of this paper is to describe the technical aspects of our generic approach for domain-specific model analysis. Our framework supports checks and information retrieval for a set of models which may be based on different notations and tools. Such a modelling scenario is typical for the analysis of clinical processes, where techniques of process modelling (e.g. Aris) are combined with techniques of IT-landscape modelling (e.g. using the 3LGM). All elements defined and used in the models under consideration are saved in a common repository based on a common meta model. The method supports the user during the modelling and the analysis phase. Support for the latter is achieved by providing aggregated information on model elements based on queries and views, which can be considered as model cross sections corresponding to given aspects. We present an architecture, a prototypical realization and the technologies used in our implementation. The architecture is modular, used technologies and software are open, thus the tool is easy to extend.

关键词： Noninvasive medical procedures

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Introducing CPU Time as a Scarce Resource in P2P systems to Achieve Fair Use in a Distributed DNS

Introducing CPU Time as a Scarce Resource in P2P Systems to ...

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

作者： Thomas Bocek David Hausheer Reinhard Riedl Burkhard Stiller Communication Systems Group Department of Informatics IFI University of Zurich Switzerland Information Systems Group Department of Informatics IFI University of Zurich Switzerland Computer Engineering and Networks Laboratory TIK Swiss Federal Institute of Technology Switzerland

Peer-to-peer (P2P) systems are flexible, robust, and self-organizing resource sharing infrastructures which are typically designed in a fully decentralized manner. However, a key problem of such systems are peers overusing a resource. This paper presents a fully decentralized scheme to achieve fair use in P2P systems, which does not require a priori information about a peer. The approach developed is based on a scarce resource trading scheme (SRTCPU), which utilizes CPU time as a form of payment. SRTCPU provides an incentive to offer CPU time in return of consuming a scarce resource. A distributed DNS has been implemented as an example application that uses SRTCPU.

关键词： Peer to peer computing Resource management Central Processing Unit Robustness informatics Grid computing Large-scale systems Information systems computer networks Distributed computing

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A study of local and global thresholding techniques in text categorization

Conferences in Research and Practice in Information Technolo...

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Conferences in Research and Practice in Information Technology Series 2006年 61卷 91-101页

作者： Wanas, Nayer M. Said, Dina A. Hegazy, Nadia H. Darwish, Nevin M. Pattern Recognition and Information Systems Group Informatics Department Electronics Research Institute Cairo Egypt Department of Computer Engineering Faculty of Engineering Cairo University Cairo Egypt

Feature Filtering is an approach that is widely used for dimensionality reduction in text categorization. In this approach feature scoring methods are used to evaluate features leading to selection. Thresholding is then applied to select the highest scoring features either locally or globally. In this paper, we investigate several local and global feature selection methods. The usage of Standard Deviation (STD) and Maximum Deviation (MD) as globalization schemes is suggested. This work provides a comparative study among fourteen thresholding techniques using different scoring methods and benchmark datasets of diverse nature. This includes investigation of normalizing feature scores before combining them in the global pool. The results suggest that normalized MD outperforms other methods in thresholding Document Frequency (DF) scores using even and moderate diverse data-sets. Furthermore, the results indicated that normalizing feature scores improves the performance of rare categories and balances the bias of some techniques to frequent cateories. © 2006, Australian computer Society, Inc.

关键词： Text processing

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Semantics, Web and Mining: Preface

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2006年 4289 LNAI卷 v-vi页

作者： Berendt, Bettina Hotho, Andreas Mladenič, Dunja Semeraro, Giovanni Spiliopoulou, Myra Stumme, Gerd Van Someren, Maarten Ackermann, Markus Grobelnik, Marko Svátek, Vojtěch Institute of Information Systems Humboldt University Berlin Germany Knowledge and Data Engineering Group University of Kassel Germany J. Stefan Institute Ljubljana Slovenia Department of Informatics University of Bari Italy Faculty of Computer Science Otto-von-Guericke-Univ. Magdeburg Germany Informatics Institute University of Amsterdam Netherlands Dept. of Natural Language Processing Institute for Computer Science University of Leipzig Germany University of Economics Prague Czech Republic

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Overview of research and development on seamless networking technologies

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Journal of the National institute of Information and Communications Technology 2006年第4期53卷 91-100页

作者： Morikawa, Hiroyuki Inoue, Masugi Hasegaw, Mikio Murakami, Homare Mahmud, Khaled Ryoki, Nobuo Pyo, Chang Woo Tran, Ha Nguyen Minami, Masateru Teraoka, Fumio Department of Frontier Informatics Graduate School of Frontier Sciences University of Tokyo Ubiquitous Mobile Communications Group New Generation Wireless Communications Research Center North South University Bangladesh Department of Electronic Engineering Faculty of Engineering Shibaura Institute of Technology Network Architecture Group New Generation Network Research Center Kyushu Research Center Collaborative Research Management Group Department of Information and Computer Science Faculty of Science and Technology Keio University

National institute of Information and Communications Technology of Japan (NICT) completed a project on new-generation mobile communications networks for beyond 3G or 4G in March 2006. This paper presents our vision of new-generation mobile communications networks from networking perspective and their capabilities to be offered: fast and large-capacity handover, cross-network handover, cross-device handover, and interworking between real and cyber worlds. Then, Metro Mobile Ring network technology for the first capability, MIRAI architecture for the second and third capabilities, and other works are presented.

关键词： Research and development management

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