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2007 ACM SIGPLAN Symposium on Principles and Practice of Parallel programming, PPoPP'07

作者： Adl-Tabatabai, Ali-Reza Kozyrakis, Christos Saha, Bratin Programming Systems Lab. Microprocessor Technology Lab. Intel Corporation Computer Systems Lab. Electrical Engineering Department Stanford University

ISBN: (纸本)1595936025

With single thread performance starting to plateau, HW architects have turned to chip level multiprocessing (CMP) to increase processing power. All major microprocessor companies are aggressively shipping multi-core products in the mainstream computing market. Moore's law will largely be used to increase HW thread-level parallelism through higher core counts in a CMP environment. CMPs bring new challenges into the design of the software system stack. In this tutorial, we talk about the shift to multi-core processors and the programming implications. In particular, we focus on transactional programming. Transactions have emerged as a promising alternative to lock-based synchronization that eliminates many of the problems associated with lock-based synchronization. We discuss the design of both hardware and software transactional memory and quantify the tradeoffs between the different design points. We show how to extend the Java and C languages with transactional constructs, and how to integrate transactions with compiler optimizations and the language runtime (e.g., memory manager and garbage collection).

关键词： Computer programming

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Optics in computer architectures: Basis of WDM, technologies and potentials

Optics in computer architectures: Basis of WDM, technologies...

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2nd International Conference on Systems, ICONS 2007

作者： Wang, Y. Kusserrow, T. Irmer, S. Hasse, A. Bartels, M. Dharmarasu, N. Hillmer, H. Börcsök, J. Mikami, O. University of Kassel Kassel Germany Department of Computer Architecture and System Programming University of Kassel Germany Department of Information Telecommunication and Electronics School of Information Science and Technology Tokai University Hiratsuka-shi Japan

ISBN: (纸本)0769528074

We present novel concepts, technologies and potentials of optical data communication, especially for future computer architectures. The WDM (wavelength division multiplexing) and the optical wiring technologies are explained in detail. Experimental results of tunable optical filters, which play a major role in WDM systems, are reported. New concepts for novel optical interconnectors and novel miniaturized lasers for direct generation of green light are proposed as examples for possible next generation components to improve the performance of optical communication based computer architecture. © 2007 IEEE.

关键词： Computer architecture

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Tranquility: A low disruptive alternative to quiescence for ensuring safe dynamic updates

Tranquility: A low disruptive alternative to quiescence for ...

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作者： Vandewoude, Yves Ebraert, Peter Berbers, Yolande D'Hondt, Theo Department of Computer Science Katholieke Universiteit Leuven Celestijnenlaan 200A 3001 Heverlee Belgium Programming Technology Lab. Vrije Universiteit Brussel Plainlaan 2 B1050 Brussels Belgium

This paper revisits a problem that was identified by Kramer and Magee: placing a system in a consistent state before and after runtime changes. We show that their notion of quiescence as a necessary and sufficient condition for safe runtime changes is too strict and results in a significant disruption in the application being updated. In this paper, we introduce a weaker condition: tranquility. We show that tranquility is easier to obtain and less disruptive for the running application but still a sufficient condition to ensure application consistency. We present an implementation of our approach on a component middleware platform and experimentally verify the validity and practical applicability of our approach using data retrieved from a case study. © 2007 IEEE.

关键词： Software design

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Improving the distributed elementwise processing implementation in D-Clean

Improving the distributed elementwise processing implementat...

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10th Symposium on programming Languages and Software Tools, SPLST 2007

作者： Zsok, Viktoria Hernyak, Zoltan Horvath, Zoltan Department of Programming Languages and Compilers Faculty of Informatics Eötvös Loránd University Pazmany Peter setany 1/C H-1117 Budapest Hungary Department of Information Technology Eszterházy Károly College Eszterházy tér 1 H-3300 Eger Hungary

ISBN: (纸本)9789634639251

The skeleton computing the distributed elementwise processing in D-Clean splits the input data, then applies an elementwise process-able function on the divided input, and finally composes the result from the already computed subresults. This paper presents improvements and refinements of the generalized skeleton implementation. The distributed and functional skeleton of the elementwise processing is implemented using the D-Clean coordination language with a new technique.

关键词： Musculoskeletal system

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SAC: Off-the-shelf support for data-parallelism on multicores

SAC: Off-the-shelf support for data-parallelism on multicore...

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DAMP 2007: Workshop on Declarative Aspects of Multicore programming

作者： Grelck, Clemens Scholz, Sven-Bodo University of Lübeck Institute of Software Technology and Programming Languages Ratzeburger Allee 160 23538 Lübeck Germany University of Hertfordshire Department of Computer Science College Lane Hatfield AL10 9AB United Kingdom University of Hertfordshire United Kingdom

ISBN: (纸本)1595936904

The advent of multicore processors has raised new demand for harnessing concurrency in the software mass market. We summarise our previous work on the data parallel, functional array processing language SaC. Its compiler technology is geared towards highly runtime-efficient support for shared memory multiprocessors and, thus, is readily applicable to today's off-the-shelf multicore systems. Copyright 2007 ACM.

关键词： Automatic programming

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A proposal of Ontology-based health care information extraction system: VnHIES

A proposal of Ontology-based health care information extract...

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2007 IEEE International Conference on Research, Innovation and Vision for the Future, RIVF 2007

作者： Dung, Tran Quoc Kameyama, Wataru Art and Multimedia Science Department Graduate School of Information and Tele-communication Studies Waseda University Database and Programming Department Institute of Information Technology Viet Nam Art and Multimedia Science Faculty Global Information and Tele-Communication Studies Graduate School Waseda University Japan Art and Multimedia Science GITS Waseda University Japan

ISBN: (纸本)1424406943

This paper presents an Ontology-based health care information extraction system - VnHIES. In the system, we develop and use two effective algorithms called "Semantic Elements Extracting Algorithm" and "New Semantic Elements Learning Algorithm" for health care semantic words extraction and ontology enhancement. The former algorithm will extract Concepts (Cs), Descriptions of concepts (Ds), Pairs of Concept and Description(C-D) and Names of diseases (Ns) in health care information domain from web pages. Those extracted semantic elements are used by latter algorithm that will render suggestions in which might contain new semantic elements for later use by domain users to enrich ontology. After extracting semantic elements, a "Document Weighting Algorithm" is applied to get summary information of document with respect to all extracted semantic words and then to be stored in knowledge base which contains ontology and database to be used later in other applications. Our experiment results show that the approach is very optimistic with high accuracy in semantic extracting and efficiency in ontology upgrade. VnHIES can be used in many health care information management systems such as medical document classification, health care information retrieval system. VnHIES is implemented in Vietnamese language. © 2007 IEEE.

关键词： Information systems

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Artificial Immune Based Support Vector Machine Algorithm for Fault Diagnosis of Induction Motors

Artificial Immune Based Support Vector Machine Algorithm for...

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2007 International Aegean Conference on Electrical Machines and Power Electronics, vol.2

作者： I. AYDIN M. KARAKOSE E. AKIN Computer Technology and Programming Education ProgramKemaliye H. A. AKIN Technical Vocational School of Higher Education Erzincan University Kemaliye Erzincan Turkey Computer Engineering Department Firat University Elazig Turkey

The use of induction motors is widespread in industry. Many researchers have studied the condition monitoring and detecting the faults of induction motors at an early stage. Early detection of motor faults results in fast unscheduled maintenance. In this study, a new artificial immune based support vector machine algorithm is proposed for fault diagnosis of induction motors. Support vector machines (SVMs) have become one of the most popular classification methods in soft computing, recently. However, classification accuracy depends on kernel and penalty parameters. Artificial immune system has abilities of learning, memory and self adaptive control. The kernel and penalizes parameters of support vector machine are tuned using artificial immune system. The training data of support vector machine are extracted from three phase motor current. The new feature vector is constructed based on park's vector approach. The phase space of this feature vector is constructed using nonlinear time series analysis. Broken rotor bar and stator short circuit faults are classified in combined phase space using support vector machines. The experimental data are taken from a three phase induction motor. One, two and three broken rotor bar faults and 10% short circuit of stator faults are detected successfully.

关键词： Support vector machines Artificial immune system Time series analysis Fault detection and diagnosis Induction motors Stator and broken rotor bar faults

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AmbientTalk: Language support for mobile computing

AmbientTalk: Language support for mobile computing

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International Workshop on System Support for Future Mobile Computing Applications, FUMCA 2006

作者： Dedecker, Jessie Van Cutsem, Tom Mostinckx, Stijn De Meuter, Wolfgang D'Hondt, Theo Fund for Scientific Research Flanders Belgium Belgium Programming Technology Laboratory Department of Computer Science Vrije Universiteit Brussel Belgium

ISBN: (纸本)0769527299

An important aspect of system support for mobile computing involves alleviating the issues related to programming the underlying distributed system. Our approach to dealing with these issues is by means of programming language support. To this end, we have designed a high-level, distributed object-oriented programming language - called Ambient Talk - which has been designed specifically for mobile networks. We motivate the need for such dedicated language support based on the fundamental characteristics of mobile distributed systems. Subsequently, we describe the salient features of Ambient Talk with respect to distributed programming by means of an exemplar mobile computing application. © 2006 IEEE.

关键词： Ubiquitous computing

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CONTROL SYSTEM DESIGN CONSIDERING A TRADEOFF BETWEEN EVALUATED UNCERTAINTY RANGES AND CONTROL PERFORMANCE

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Asian Journal of Control 2008年第1期1卷

作者： Y. Wakasa Y. Yamamoto Dept. of Applied Analysis and Complex Dynamical Systems Graduate School of Informatics Kyoto University Kyoto Japan. Yuji Wakasa was born in Okayama Japan in 1968. He received the B.S. and M.S. degrees in engineering from Kyoto university Japan in 1992 and 1994 respectively. From 1994 to 1998 he was a Research Associate in the Department of Information Technology Okayama University. Since April 1998 he has been a Research Associate in the Graduate School of Informatics Kyoto University. His current research interests include robust control and control system design via mathematical programming. Yutaka Yamamoto received his B.S. and M.S. degrees in engineering from Kyoto University Kyoto Japan in 1972 and 1974 respectively and the M.S. and Ph.D. degree in mathematics from the University of Florida in 1976 and 1978 respectively. From 1978 to 1987 he was with Department of Applied Mathematics and Physics Kyoto University and from 1987 to 1997 with Department of Applied System Science. Since 1998 he is a professor at the current position. His current research interests include realization and robust control of distributed parameter systems learning control sampled-data systems and digital signal processing. Dr. Yamamoto is a receipient of the Sawaragi memorial paper award (1985) the Outstanding Paper Award of SICE (1987) Best Author Award of SICE (1990) the George Axelby Outstanding Paper Award of IEEE CSS in 1996 Takeda Paper Prize of SICE in 1997. He is a Fellow of IEEE. He was an associate editor of Automatica. He is currently an associate editor of IEEE Transactions on Automatic Control Systems and Control Letters and Mathematics of Control Signals and Systems. He is a member of the IEEE the Society of Instrument and Control Engineers (SICE) and the Institute of Systems Control and Information Engineers.

This paper presents a design method of control systems such that a designer can flexibly take account of tradeoffs between evaluated uncertainty ranges and the level of control performance. The problem is reduced to a BMI problem and approximately solved by LMIs. The convergence of the proposed approximation is proved in a modified sense. A numerical example shows the effectiveness of the proposed method in comparison with the standard robust control.

关键词： Control system design LMI BMI tradeoff curves

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Multi-campus collaborations among undergraduate design teams: Opportunities and challenges

Multi-campus collaborations among undergraduate design teams...

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113th Annual ASEE Conference and Exposition, 2006

作者： Zoltowski, Carla Oakes, William Myers, Barrett Purdue University United States EPICS Program Purdue University United States ASEE Department of Engineering Education Purdue University United States EPICS Program Computer Programming Technology

There are many benefits to participating in multi-campus collaborations among project-based design teams. First, students gain experience in working in a distributed design environment, which is becoming more commonplace in engineering practice. Second, collaborations offer the ability to share complementary expertise and allow student design teams to participate in projects that they would not normally be able to undertake alone. Third, collaboration among teams of multiple campuses allows for sharing of prior work and the opportunity to build upon the work to have a more significant impact. There are, however, challenges to participating in multi-campus collaborations. It is difficult for student teams to partition projects such that they can be done somewhat independently. Communication issues can be complicated by distance and the lack of face-to-face contact on a regular basis. The EPICS - Engineering Projects in Community Service - program engages undergraduate student design teams on long-term projects that solve technology-based problems for local community service organizations. There are sixteen universities with active EPICS programs in the 2005-2006 academic year. While the programs have some variation as EPICS has been integrated into each individual campus, they share basic characteristics. The existence of EPICS programs on multiple campuses has created the opportunity to collaborate across institutions. This paper will describe three models for multi-campus collaboration that have been used in EPICS. © American Society for Engineering Education, 2006.

关键词： Engineering education

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