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Workshops on Object-Oriented Technology, ECOOP 1997

作者： Mens, Kim Lopes, Cristina Tekinerdogan, Bedir Kiczales, Gregor Department of Computer Science Programming Technology Lab Vrije Universiteit Brussel Pleinlaan 2 BrusselB-1050 Belgium Systems and Practices Laboratory Xerox PARC 3333 Coyote Hill Rd Palo AltoCA94304 United States Department of Computer Science Software Engineering University of Twente P.O. Box 217 Enschede7500 AE Netherlands

ISBN: (纸本)3540640398

Whereas it is generally acknowledged that code tangling reduces the quality of software and that aspect-oriented programming (AOP) is a means of addressing this problem, there is — as yet — no clear definition or characterisation of AOP. Therefore, the main goal of the ECOOP’97 AOP workshop was to identify the "good questions" for exploring the idea of AOP. © Springer-Verlag Berlin Heidelberg 1998.

关键词： Aspect oriented programming

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Load adjustment and filtering based on process criticality

Load adjustment and filtering based on process criticality

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IEEE International Conference on Embedded and Real-Time Computing systems and Applications (RTCSA)

作者： Tei-Wei Kuo Shie-Kai Ni Giun-Haur Huang Real Time Systems Laboratory Department of Computer Science and Information Engineering National Chung Cheng University Chiayi Taiwan Department of New Technology Development Platform Software Division Acer Incorporated Taipei Taiwan System Software Laboratory Institute for Information Industry Taipei Taiwan

ISBN: (纸本)081869209X

This paper generalizes the load scaling techniques proposed in (Kuo and Mok, 1991) for fixed-priority real-time applications. A framework is proposed to adjust the system workload by relating the criticality and flexibility of a process to the resource allocation problem. A load adjustment procedure based on the approximation algorithm (Ni et al., 1997) is proposed to maximize the system profit in an on-line fashion. When the list of allowable configurations is implicitly given by scalable periodic processes, the corresponding load filtering problem is shown to be NP-complete. We also prove the upper bound of the system profit and provide a mechanism to balance the schedulability and the maximum profit of the system.

关键词： Filtering Resource management Job shop scheduling Timing Real time systems Approximation algorithms Upper bound Laboratories Frequency computer science

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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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The consensus glossary of temporal database concepts - february 1998 version

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) 1998年 1399卷 367-405页

作者： Jensen, Christian S. Dyreson, Curtis E. Bohlen, Michael Clifford, James Elmasri, Ramez Gadia, Shashi K Grandi, Fabio Hayes, Pat Jajodia, Sushil Käfer, Wolfgang Kline, Nick Lorentzos, Nikos Mitsopoulos, Yannis Montanari, Angelo Nonen, Daniel Peressi, Elisa Pernici, Barbara Roddick, John F Sarda, Nandlal L Scalas, Maria Rita Segev, Arie Snodgrass, Richard T Soo, Mike D. Tansel, Abdullah Tiberio, Paolo Wiederhold, Gio Aalborg University Department of Computer Science Fredrik Bajers Vej 7E Aalborg ØDK-9220 Denmark Computer Science Dept Aalborg University Denmark Computer Science Dept James Cook University Australia Computer Science Engineer¬ing Dept University of Texas at Arlington United States Computer Science Dept Iowa State University United States CIOC-CNR DEIS University of Bologna Italy Beckman Institute United States In¬formation and Software Systems Engineering Dept George Mason University United States Mercedes Benz Agricultural University of Athens Greece Informatics Laboratory Agricultural University of Athens Greece Infor¬matics Laboratory Agricultural University of Athens Greece Dip. di Matematica e Informatica Universita di Udine Italy Computer Science Dept Concordia University Canada Dip. di Matematica e Informatica Universita di Udine Italy Electronic Engineering and Information Sciences Dept Politecnico di Milano Italy School of Computer and Information Science University of South Australia Australia Computer Science and Engineering Dept Indian Institute of Technology Bombay India University of Bologna Italy School of Business Adm. and Computer Science Research Dept University of California United States Computer Science Dept Uni¬versity of Arizona United States Computer Science and Engineering Dept University of South Florida United States Bernard M. Baruch College City University of New York United States CIOC-CNR DEIS University of Bologna Italy Computer Science Dept Stanford University United States

This document1 contains definitions of a wide range of concepts specific to and widely used within temporal databases. In addition to providing definitions, the document also includes explanations of concepts as well as discussions of the adopted names. The consensus effort that lead to this glossary was initiated in Early 1992. Earlier versions appeared in SIGMOD Record in September 1992 and March 1994. The present glossary subsumes all the previous documents. The glossary meets the need for creating a higher degree of consensus on the definition and naming of temporal database concepts. Two sets of criteria are included. First, all included concepts were required to satisfy four relevance criteria, and, second, the naming of the concepts was resolved using a set of evaluation criteria. The concepts are grouped into three categories: concepts of general database interest, of temporal database interest, and of specialized interest. © Springer-Verlag Berlin Heidelberg 1998.

关键词： Database systems

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Metabolic pathway interface to molecular biology databases

Metabolic pathway interface to molecular biology databases

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International Working Conference on Scientific and Statistical Database Management

作者： B. Zeeberg K. Watanabe S. Goto R. Overbeek L. Kerschberg G. Michaels Institute for Computational Science and Informatics and Institute for Biosciences Bioinformatics and Biotechnology George Mason University USA Institute for Computational Science and Informatics and Westat George Mason University Institute for Chemical Research Kyoto University Division of Mathematics and Computer Sciences Argonne National Laboratory Information and Software Systems Engineering George Mason University Institute for Computational Science and Informatics and Institute for Biosciences Bioinformatics and Biotechnology George Mason University

We present results of providing database support to biomedicine via federation of SDB Cooperation/Integration based upon the KEGG GUI for molecular biology. The federation provides a common link to three molecular biology databases. The added value of the federation is freedom from consulting multiple references to ascertain the full set of enzymatic reactions in a metabolic pathway, and the option of selecting multiple queries to submit to the federated SDBs. Each of the SDBs is extensive, but incomplete. The union of the SDBs, implemented transparently by the federation, is more complete. Each SDB provides a different approach to the options available for data presentation and a different set of Web server tools for data analysis. Thus, an important part of the added value of the federation is the cross-fertilization available in the union of the molecular biological content, the presentation of data, and the tools available for analysis.

关键词： Biology computing Spatial databases Sequences Informatics Bioinformatics Biotechnology Biomedical computing Web server Chemical engineering Laboratories

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Services supporting management of distributed applications and systems

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IBM systems Journal 1997年第4期36卷 508-525页

作者： Bauer, M.A. Bunt, R.B. El Rayess, A. Finnigan, P.J. Kunz, T. Lutfiyya, H.L. Marshall, A.D. Martin, P. Oster, G.M. Powley, W. Rolia, J. Taylor, D. Woodside, M. Middlesex College Department of Computer Science University of Western Ontario London ONT Canada Department of Computer Science University of Saskatchewan Saskatoon SAS Canada IBM Software Solutions Division Toronto Laboratory North York ONT Canada Department of Computer Science University of Waterloo Waterloo ONT Canada Department of Computer Science Middlesex College University of Western Ontario London ONT Canada Department of Computer Science Middlesex College University of Western Ontario London ONT Canada Department of Computing and Information Science Queen''s University Kingston ONT Canada Department of Systems and Computer Engineering Carleton University Ottawa ONT Canada Department of Systems and Computer Engineering Carleton University Ottawa Canada

A distributed computing system consists of heterogeneous computing devices, communication networks, operating system services, and applications. As organisations move toward distributed computing environments, there will be a corresponding growth in distributed applications central to the enterprise. The design, development, and management of distributed applications presents many difficult challenges. As these systems grow to hundreds or even thousands of devices and similar or greater magnitude of software components, it will become increasingly difficult to manage them without appropriate support tools and frameworks. Further, the design and deployment of additional applications and services will be, at best, ad hoc without modelling tools and timely data on which to base design and configuration decisions. This paper presents a framework for management of distributed applications and systems. The framework is based on a set of common management services that support management activities. The services include monitoring, control, configuration, and data repository services. A prototype system built on the framework is described that implements and integrates management applications providing visualisation, fault location, performance monitoring and modelling, and configuration management. The prototype also demonstrates how various management services can be implemented.

关键词： Distributed computer systems

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A spectral approach to compute the mean performance measures of the queue with low-order BMAP input

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Journal of Applied Mathematics and Stochastic Analysis 1997年第4期16卷 349-360页

作者： Lee, Ho Woo Moon, Jong Min Park, Jong Keun Kim, Byung Kyu Sung Kyun Kwan University Dept. of Systems Management Engineering Su Won 440-746 South Korea SE Application Prog. Info Tech. Group Division LG CNS Good Morning Bldg. Seoul 150-712 Yeo Eui Do South Korea I/O System Team Computer System Department Computer and Software Research Laboratory Dae Jon 305-350 South Korea Itsweb CRM Team R and D Center 789-4 Young Bldg. Seoul 135-080 Yok Sam Dong Kang Nam South Korea

This paper targets engineers and practitioners who want a simple procedure to compute the mean performance measures of the Batch Markovian Arrival process (BMAP/G/1) queueing system when the parameter matrices order is very low. We develop a set of system equations and derive the vector generating function of the queue length. Starting from the generating function, we propose a spectral approach that can be understandable to those who have basic knowledge of M/G/1 queues and eigenvalue algebra. ©2003 by North Atlantic Science Publishing Company.

关键词： BMAP/G/1 Queue Spectral Approach

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Corona: a communication service for scalable, reliable group collaboration systems 96

Corona: a communication service for scalable, reliable group...

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Proceedings of the 1996 ACM conference on computer supported cooperative work

作者： Robert W. Hall Amit Mathur Farnam Jahanian Atul Prakash Craig Rassmussen Software Systems Research Laboratory Department of Electrical Engineering and Computer Science The University of Michigan Ann Arbor MI

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Using object-oriented principles to optimize update propagation to materialized views

Using object-oriented principles to optimize update propagat...

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International Conference on Data engineering

作者： H.A. Kuno E.A. Rundensteiner Department of Elect. Engineering and Computer Science Software Systems Research Laboratory University of Michigan Ann Arbor MI USA

View materialization is known to be a valuable technique for performance optimization in relational databases, and much work has been done addressing the problem of consistently maintaining relational views under update operations. However, little progress has been made thus far regarding the topic of view materialization in object-oriented databases (OODBs). In this paper, we demonstrate that there are several significant differences between the relational and object-oriented paradigms that can be exploited when addressing the object-oriented view materialization problem. We use the subsumption relationships between classes to identify branches of classes to which we do not need to propagate updates. Similarly, we use encapsulated interfaces combined with the fact that any unique database property is inherited from a single location to provide a "registration/notification" service for optimizing incremental view updates. We also report results from the experimental studies we have run on the MultiView system measuring the impact of these optimization strategies.

关键词： Object oriented modeling Relational databases Object oriented databases computer science software systems Laboratories Optimization Programming profession NASA Prototypes

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Augmented inherited multi-index structure for maintenance of materialized path query views

Augmented inherited multi-index structure for maintenance of...

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International Workshop on Research Issues in Data engineering

作者： H.A. Kuno E.A. Rundensteiner Department of Elect. Engineering and Computer Science Software Systems Research Laboratory University of Michigan Ann Arbor MI USA

Materialized complex object-oriented views are a promising technique for the integration of heterogeneous databases and the development of powerful data warehousing systems. Path query views are virtual classes formed from selection queries that specify a predicate upon the value of an aggregation hierarchy path. The primary difference between previous work regarding OODB indexing and the efficient implementation of materialized path query views addressed in this paper lies in the nature of their usage. For OODB indexing, query usage is the primary purpose of index structures. Because the materialized view data itself can be used to answer queries, the primary use of index structures with regard to materialized path query views is for the incremental maintenance of views in the face of updates. We have developed an augmented inherited multi-index (AIM) strategy that is specifically tailored for the maintenance of materialized path query views. We find that we can improve update performance by augmenting traditional inherited multi-indices with structured representations of the path queries that use them. This enables us to use class hierarchy relationships to prune the number of aggregation paths that must be re-instantiated during update propagation and also to support complex path queries that include cycles.

关键词： Object oriented databases Warehousing Indexing Distributed databases Workflow management software computer science software systems Laboratories Information technology Database systems

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