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IFIP/IEEE international symposium on Integrated Network Management

作者： N. Dulay E. Lupu M. Sloman N. Damianou Department of Computing Imperial College of Science Technology and Medicine London UK

ISBN: (纸本)0780367197

Policies are rules that govern the choices in behaviour of a system. Security policies define what actions are permitted or not permitted, for what or for whom, and under what conditions. Management policies define what actions need to be carried out when specific events occur within a system or what resources must be allocated under specific conditions. There is considerable interest in the use of policies for the security and management of large-scale networks and distributed services. Existing policy work has focussed on specification, information models and application-specific policy enforcement. We address the important goal of providing a general-purpose deployment model for policies that is independent of the underlying policy enforcement mechanisms and can be employed in mixed policy environments. In this paper, we present a deployment model that is object-oriented and addresses the instantiation, distribution and enabling of policies as well as the disabling, unloading and deletion of policies. The model defines objects for policies, for domains, and for the policy enforcement agent and outlines the interactions needed between them. The model also caters for changes in the memberships of domains since such changes also effect policy enforcement. The model forms part of the run-time support for Ponder; a new policy language that combines structuring ideas from object-oriented languages with a common set of policy basic types.

关键词： object oriented modeling Resource management Runtime Quality management Educational institutions Information security Large-scale systems Computer network management Data security Specification languages

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A framework architecture for information management in dynamic vehicle dispatching

A framework architecture for information management in dynam...

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Annual Hawaii international Conference on System Sciences (HICSS)

作者： I. Benyahia J.-Y. Potvin Université du Québec Hull Hull QUE Canada Centre de recherche sur les transports Université de Montreal Montreal QUE Canada

ISBN: (纸本)0769509819

Emerging technologies in computing and communications now make possible the processing of large amounts of real-time information. This enables the development of computerized systems for complex applications such as dynamic vehicle dispatching in the transportation sector. These systems are difficult to design and develop, since they require the real-time processing of unexpected events that impact the system in a non-deterministic way. To face these difficulties, we consider a reusable framework designed for such complex applications. This framework is based on a distributed architecture with components characterized by a behavior that satisfies the specific requirements of complex applications. Extensions and additional components are presented and discussed to support the design of a dynamic vehicle dispatcher.

关键词： Information management Vehicle dynamics Vehicles Dispatching Transportation object oriented modeling Environmental management Quality management Computational modeling Application software

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PVL: An object oriented software library for parallel signal processing

PVL: An object oriented software library for parallel signal...

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Annual IEEE symposium on Foundations of Computer Science

作者： E. Rutledge J. Kepner MIT Lincoln Laboratories USA

Summary form only given, as follows. The complete presentation was not made available for publication as part of the conference proceedings. real-time signal processing consumes the majority of the world's computing power. Increasingly, programmable parallel microprocessors are used to address a wide variety of signal processing applications (e.g. scientific, video, wireless, medical, communication, encoding, radar, sonar and imaging). In programmable systems the major challenge is no longer hardware but software. Specifically, the key technical hurdle lies in mapping (i.e., placement and routing) of an algorithm onto a parallel computer in a general manner that preserves software portability. We have developed the Parallel Vector Library (PVL) to allow signal processing algorithms to be written using high level Matlab like constructs that are independent of the underlying parallel mapping. Programs written using PVL can be ported to a wide range of parallel computers without sacrificing performance. Furthemore, the mapping concepts in PVL provide the infrastructure for enabling new capabilities such as fault tolerance, dynamic scheduling and self-optimization. This presentation discusses PVL with particular emphasis on quantitative comparisons with standard parallel signal programming practices.

关键词： Software libraries Signal processing Video signal processing Signal processing algorithms Concurrent computing Military computing Microprocessors Application software Wireless communication

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real-time CORBA

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IEEE TRANSACTIONS ON PARALLEL AND distributed SYSTEMS 2000年第10期11卷 1073-1089页

作者： Fay-Wolfe, V DiPippo, LC Cooper, G Johnston, R Kortmann, P Thuraisingham, B Univ Rhode Isl Dept Comp Sci Kingston RI 02881 USA SPAWAR Syst Ctr San Diego CA 92152 USA Tri Pacific Software Alameda CA 94501 USA Mitre Corp Bedford MA 01730 USA

This paper presents a survey of results in developing real-time CORBA, a standard for rear-time management of distributed objects. This paper includes background on two areas that have been combined to realize Rear-time CORBA: the CORBA standards that have been produced by the international object Management Group;and techniques for distributed real-time computing that have been produced in the research community. The survey describes major RT CORBA research efforts, commercial development efforts, and standardization efforts by the object Management Group.

关键词： real-time CORBA object-oriented distributed standards

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GLADE: A framework for building large object-oriented real-time distributed systems 3

GLADE: A framework for building large object-oriented real-t...

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3rd IEEE international symposium on object-oriented real-time distributed computing, ISORC 2000

作者： Pautet, L. Tardieu, S. École Nationale Supérieure des Télécommunications Computer Science and Networks Departement 46 rue Barrault Paris Cedex 13F-75634 France

ISBN: (纸本)0769506070

This paper describes how GLADE, our implementation of the Ada 95 distributed Systems Annex, can be used to build large object-oriented real-time distributed systems. In addition to the powerful distribution features included in the Ada 95 language itself, we provide extensions to help the programmer build robust and failsafe distributed applications. © 2000 IEEE.

关键词： real time systems

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A position on design, methods, and tools for object-oriented real-time computing 3

A position on design, methods, and tools for object-oriented...

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3rd IEEE international symposium on object-oriented real-time distributed computing, ISORC 2000

作者： Bondavalli, A. Di Giandomenico, F. CNUCE Istituto del CNR Area della Ricerca di Pisa Via Alfieri 1 Pisa56127 Italy IEI Istituto del CNR Area della Ricerca di Pisa Via Alfieri 1 Pisa56127 Italy

ISBN: (纸本)0769506070

real-time is a major characteristic of many systems, increasingly employed today in disparate sectors of our society. To specify and program systems, exhibiting real-time properties, a number of computing paradigms have been adopted, both explicitly defined to specify real-time behaviours and imported from other application areas with the addition of mechanisms to deal with real-time. The paper discusses object oriented real-time system design and tools. © 2000 IEEE.

关键词： real time systems

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Component customization for object-oriented distributed real-time software development 3

Component customization for object-oriented distributed real...

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3rd IEEE international symposium on object-oriented real-time distributed computing, ISORC 2000

作者： Yau, S.S. Karim, F. Computer Science and Engineering Department Arizona State University TempeAZ85287 United States

ISBN: (纸本)0769506070

To apply the component-based approach to distributed real-time software development, it is necessary to identify components based on both functional and real-time requirements. Since a component may be acquired from external sources, it becomes necessary during integration to ensure that a component satisfies the real-time requirements of the target application software. Since these requirements vary, customizable so that during integration it can adapt itself to the specific real-time requirements of the target-distributed software. To facilitate such activities, it is preferable to have components that are capable of performing self-customization using a set of built-in services. In this paper, an object-oriented real-time component framework and two built-in customization services are presented to address the specified issues. © 2000 IEEE.

关键词： Integration

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distributed framework for real-time multimedia object communication 3

Distributed framework for real-time multimedia object commun...

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3rd IEEE international symposium on object-oriented real-time distributed computing, ISORC 2000

作者： Fahmi, H. Aref, W.G. Latif, M. Ghafoor, A. Liu, Peiya Hsu, Liang Purdue University West LafayetteIN47907 United States Siemens Corporate Research Inc. 755 College Road East PrincetonNJ08540 United States

ISBN: (纸本)0769506070

We highlight major technical requirements for designing and developing future distributed multimedia information systems using Internet technology. The key requirements of this system are to allow users to access and search and to communicate multimedia documents consisting of text, audio, video and images. We emphasize the role of object-oriented technology for information management and real-time communication protocols to guarantee QoS. We present a reference architecture for a Web-based real-time distributed multimedia system which integrates enabling technologies including real-time streaming, multimedia indexing and searching and distributed object management. © 2000 IEEE.

关键词： Information management

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A real-time heterogeneous distributed computing environment for multi-robot system 3

A real-time heterogeneous distributed computing environment ...

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3rd IEEE international symposium on object-oriented real-time distributed computing, ISORC 2000

作者： Qutubudin, Khaja Pease, Dan Dept. of Electrical and Computer Engineering Syracuse University SyracuseNY13244 United States

ISBN: (纸本)0769506070

Proposes a distributed computing framework for the real-time management of a large number of robots in an industrial setting. The primary design objective of this framework is to allow a centralized heterogeneous multiprocessor controller to perform real-time scheduling and evaluation of Newton-Euler equations for manipulating the robot motion. The real-time scheduling of tasks in such an environment is shown to be an NP-hard problem, for which we propose a deadline-based heuristic. A detailed simulation reveals that the proposed heuristic can achieve near-optimal performance. © 2000 IEEE.

关键词： Multipurpose robots

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Modelling of real-time embedded systems in an object-oriented design environment with UML 3

Modelling of real-time embedded systems in an object-oriente...

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3rd IEEE international symposium on object-oriented real-time distributed computing, ISORC 2000

作者： Jigorea, R. Manolache, S. Eles, P. Peng, Z. Dept. of Comput. and Inf. Sci. Linköping Univ. Sweden

ISBN: (纸本)0769506070

The paper explores aspects concerning system-level specification, modelling and simulation of real time embedded system. By means of case studies, we investigate how object oriented methodologies, and in particular UML, support the modelling of industrial scale real time systems, and how different architectures can be explored by model simulation. We are mainly interested in the problem of system specification as it appears from the prospect of the whole design process. The discussion is illustrated by a large system model from the telecommunications area, the GSM base transceiver station. © 2000 IEEE.

关键词： real time systems

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