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International Conference on Intelligent Transportation

作者： T. Kosch C. Schwingenschlogl Li Ai BMW Research Department Munich Germany Department of Computer Science applied Informatics Cooperative Systems Group Munich University of Technology Germany Department of Electrical Engineering and Information Technology Institute of Communication Networks Munich University of Technology Germany Department of Electrical Engineering and Information Technology Munich University of Technology Germany

In addition to the integration of vehicles into traditional networks (e.g. access to the Internet via cellular) the Ad-hoc connection of vehicles within a limited area is a technology that promises a lot of innovative and exciting services. This paper starts with the description of some services to motivate Ad-hoc networking in the vehicular environment. It then gives an overview of the current challenges (especially routing protocols) in this field. If the geographic position of the network nodes is known, better performance can be achieved with the utilization of so called geocast routing-algorithms. An overview of geocast-routing is given and shortcomings of the existing protocols for the usage in inter-vehicle Ad-hoc networks are explained. Finally we make a proposal for a vehicle-optimized geocast routing, protocol that is based on AODV and present our prototype implementation.

关键词： Intelligent networks Spread spectrum communication Routing protocols Vehicles Mobile communication Testing IP networks Data communication Wireless LAN Broadcasting

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Spatial Coherence of Currently Available EUV/Soft X‐Ray Sources

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AIP Conference Proceedings 2002年第1期641卷 607-612页

作者： Yanwei Liu David T. Attwood Jorge J. Rocca Henry C. Kapteyn Margaret M. Murnane 1Applied Science and Technology Graduate Group University of California Berkeley CA 94720 1aCenter for X‐Ray Optics Lawrence Berkeley National Lab Berkeley CA 94720 2Department of Electrical and Computer Engineering Colorado State University Fort Collins CO 80523 3Department of Physics University of Colorado Boulder CO 80309 3aJILA University of Colorado Boulder CO 80309 3bNIST Boulder CO 80309

Spatial coherence properties of 3 different kinds of coherent sources in extreme ultraviolet/soft x‐ray wavelength region, namely undulator, x‐ray laser and high harmonic generation source, are introduced. Advantage...

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The MultiMedia maintenance management (M4) system

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International Conference on Computational science, ICCS 2001

作者： McCrindle, Rachel J. Applied Software Engineering Research Group Department of Computer Science University of Reading PO Box 225 Reading Berkshire RG6 6AY United Kingdom

ISBN: (纸本)3540422331

Although adoption of a software process model or method can realise significant benefits, there is generally a need to provide a level of computerised support if it is to be usefully applied to large real-world systems. This is particularly true in relation to the software maintenance discipline, where many of the problems to date have typically arisen from deficiencies in recording and being able to easily access any knowledge regained about a system during maintenance. The MultiMedia Maintenance Management (M4) system has been designed and prototyped as a meta-CASE framework in order to promote maximum process flexibility and product extensibility. As such, a variety of bespoke or host-resident tools for activities such as process management, information reclamation and documentation, configuration management, risk assessment etc. may be plugged into the M4 system and activated through a universal front-end. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Risk assessment

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Algorithms for energy optimization using processor instructions 2

Algorithms for energy optimization using processor instructi...

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2nd International Conference on Compilers, Architecture, and Synthesis for Embedded Systems, CASES 2001

作者： Seth, Anil Keskar, Ravindra B. Venugopal, R. Department of Computer Science and Engineering Indian Institute of Technology Kanpur India Computer Science Research and Development Group Sasken Communication Technologies Limited Bangalore India Hewlett Packard India Software Operations Bangalore India

ISBN: (纸本)1581133995

In this paper, we consider processors which provide an idle instruction to the user for powering down processor units which are not required during portions of program execution. We describe algorithms which can be implemented in an energy-aware compiler to make efficient use of such an instruction. These algorithms are based on program static analysis and a combinatorial optimization formulation of the problem. We assume as input an assembly language program of the processor in question. The problem is to insert the idle instruction at different places in the assembly language program such that energy saving is maximized and the execution time of the resulting program is not increased beyond a user-specified value. Copyright 2001 ACM.

关键词： Combinatorial optimization

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Making movies: Watching software evolve through visualisation

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International Conference on Computational science, ICCS 2001

作者： Cain, James Westland McCrindle, Rachel Jane Quantel Limited Turnpike Road Newbury BerkshireRG14 2NE United Kingdom Applied Software Engineering Research Group Department of Computer Science University of Reading Whiteknights PO Box 225 Reading BerkshireRG6 6AY United Kingdom

ISBN: (纸本)3540422331

This paper introduces an innovative visualisation technique for exposing the software defects that develop as a software project evolves. The application of this technique to a large-scale industrial software project is described together with the way in which the technique was modified to enable integration with the software configuration management process. The paper shows how a number of forces acting on the project can be equated to changes in the visualisations and how this can be used as a measure of the quality of the software. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Visualization

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Inconsistency tolerance across enterprise solutions

Inconsistency tolerance across enterprise solutions

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IEEE Workshop on Future Trends of Distributed Computing Systems

作者： P. Henderson R.J. Walters S. Crouch Declarative Systems and Software Engineering Group Department of Electronics and Computer Science University of Southampton Southampton UK

As every information system becomes connected to every other information system, they form the so-called "information utility". This is the domain in which contemporary distributed systems have to operate. New applications have to be evolved on this platform of existing systems that may hold inconsistent information. Consequently, solutions need to be able work in a world of only partially correct information. In this paper, we discuss means whereby architects, designers and engineers may, in this context of information inconsistency, develop new business solutions and reason about their validity. In particular we describe the properties of inter-enterprise system architectures for applications working with partially replicated and partially consistent information. These must be able to operate under reversible assumptions and to undo operations as a consequence of reversing assumptions. We have developed exemplary architectures that exhibit these properties, used them to investigate the concept of inconsistency-tolerant components and begun to devise methods of building inter-enterprise applications from such components. This approach, we conjecture, makes reasoning about the validity of proposed inter-enterprise scale solutions more straightforward and thus increases the speed with which new solutions can be deployed. We are evaluating these ideas now, by building, along with our industrial collaborators, realistic enterprise-scale demonstrations in the domains of Finance and Defence.

关键词： Distributed computing Internet software engineering computer science Information systems Design engineering Identity-based encryption Read only memory computer industry Finance

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Design and implementation of a CORBA commodity grid kit 2nd

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2nd International Workshop on Grid Computing, GRID 2001

作者： Vema, Snigdha Parashart, Manish Gawor, Jarek von Laszewski, Gregor The Applied Software Systems Laboratory Department of Electrical and Computer Engineering Rutgers University 94 Brett Road PiscatawayNJ08854-8058 United States Mathematics and Computer Science Division Argonne National Laboratory 9700 S. Cass Ave ArgonneIl60440 United States

ISBN: (纸本)3540429492

This paper reports on an ongoing research project aimed at designing and deploying a COMA Commodity Grid (COG) Kit. The overall goal of this project is to explore how commodity distributed computing technologies and state-of-the-art software engineering practices can be used for the development of advanced Grid applications. As part of this activity, we are investigating how CORBA can be integrated with the existing Grid infrastructure. In this paper, we present the design of a CORBA Commodity Grid Kit that provides a software development framework for building a CORBA "Grid domain." We then present our experiences in developing a prototype CORBA COG Kit that supports the development and deployment of CORBA applications on the Grid by providing them access to the Grid services provided by the Globus toolkit. © Springer-Verlag Berlin Heidelberg 2001.

关键词： Common object request broker architecture (CORBA)

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Coupling Trends in Industrial Prototyping Roles: An Empirical Investigation

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software Quality Journal 2001年第4期9卷 223-240页

作者： Phalp, Keith Counsell, Steve Empirical Software Engineering Group Bournemouth University Bournemouth United Kingdom Department of Computer Science Birkbeck College University of London Malet Street London WC1E 7HX United Kingdom University of Kent United Kingdom Bournemouth University United Kingdom Inst. of Math. and its Applications United Kingdom

Prototyping in the development cycle claims to improve analyst understanding of system requirements leading to systems which match those requirements more closely. The quality of the end systems, from a user perspective, is thus improved. In this paper, the results of an empirical investigation into the use of prototyping in the development of various systems is described. Nine processes across eight different sites were analysed and data relating to each process was collected. The notation of Role Activity Diagrams (RADs) was used to capture each of the nine processes. Five hypotheses were then investigated: these related the prototyping role to features of other roles such as extent of interaction during the prototyping process, the effect site size had on the prototyping role and the dependence of the prototyping role on other roles in the prototyping process. Two coupling metrics were introduced to quantitatively analyse these RAD features. Results indicated a strong similarity between large and medium-sized sites in terms of interactions and behaviour. The prototyping process in small sites, however, was found to be different to large and medium-sized sites in both respects. The study demonstrates how measures of business models can aid analysis of the process as well as the products of systems development and highlights the need for more empirical investigation into this and other facets of the software development process.

关键词： software design

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An empirical methodology for introducing software processes

An empirical methodology for introducing software processes

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8th Eiropean engineering Conference (ESEC) and 9th ACM SIGSOFT Symposium on the Foundations of software engineering (FSE-9)

作者： Shull, Forrest Carver, Jeffrey Travassos, Guilherme H. Fraunhofer Center - Maryland University of Maryland 4321 Hartwick Road College Park MD 20742 United States Exp. Software Engineering Group Department of Computer Science University of Maryland College Park College Park MD 20742 United States Computer Science Department COPPE UFRJ C.P. 68511 - Ilha do Fundão Rio de Janeiro - RJ - 21945-180 Brazil

There is a growing interest in empirical study in software engineering, both for validating mature technologies and for guiding improvements of less-mature technologies. This paper introduces an empirical methodology, based on experiences garnered over more than two decades of work by the Empirical software engineering group at the University of Maryland and related organizations, for taking a newly proposed improvement to development processes from the conceptual phase through transfer to industry. The methodology presents a series of questions that should be addressed, as well as the types of studies that best address those questions. The methodology is illustrated by a specific research program on inspection processes for Object-Oriented designs. Specific examples of the studies that were performed and how the methodology impacted the development of the inspection process are also described.

关键词： software engineering

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The Java Fieldbus Control Framework-object oriented control of fieldbus devices

The Java Fieldbus Control Framework-object oriented control ...

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International Symposium on Object-Oriented Real-Time Distributed Computing

作者： D. Buhler G. Nusser W. Kuchlin G. Gruhler Department of Computer Science Symbolic Computation Group University of Tübingen Tubingen Germany Institute for Automation Engineering University of Applied Sciences of Reutlingen Reutlingen Germany

ISBN: (纸本)0769510892

In this paper we present the Java Fieldbus Control Framework (JFCF) which provides an object oriented programming framework for the rapid creation of concurrent control tasks for fieldbus-based automation systems. Our framework is implemented in Java which is going to become more popular in the field of industrial control, due to the advent of dedicated Java real-time systems and the RealTime Specification for Java (RTSJ). We further describe an example application built within our framework consisting of an open Java control for a CANopen automation system featuring a SCARA robot arm, a transfer system and further peripheral fieldbus devices. Four independent tasks run concurrently to establish the overall automation process. In order to meet real-time requirements, the framework will be extended to comply to the RTSJ in the future. The reusability of object oriented software and the portability of Java code results in a reduction of costs for software creation and maintenance.

关键词： Java Field buses Automatic control Control systems Robotics and automation software maintenance software reusability Object oriented programming Industrial control Real time systems

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