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1993 4th Workshop on Future Trends of Distributed Computing Systems

22-24 Sept. 1993

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  • 1993 4th Workshop on Future Trends of Distributed Computing Systems

    Publication Year: 1993
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    Freely Available from IEEE
  • Replicated object management using group technology

    Publication Year: 1993, Page(s):54 - 61
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (784 KB)

    The authors detail the goals of the ROMANCE (replicated object management configurable environment) project and present its software architecture and current status. A fundamental goal of the project is to experiment with group technology. In ROMANCE, distribution and replication are implemented using underlying group communication and membership services. The authors also describe how these tools... View full abstract»

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  • Fair distribution of concerns in design and evaluation of fault-tolerant distributed computer systems

    Publication Year: 1993, Page(s):173 - 180
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB)

    In literature dealing with fault-tolerant computer systems, the replaceable components are most often modeled as one of the two extreme types with respect to their faulty output behavior: the fail-silent unit (FSU) model at the simplest end and the malicious unit (MaU) model, also called the Byzantine unit model, at the other end. The basic weaknesses of these models for use in practical system de... View full abstract»

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  • An experimental multimedia information exchange system

    Publication Year: 1993, Page(s):31 - 37
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    The authors summarize the lessons learned during a research project that aimed at understanding the practical problems encountered in building multimedia communication systems. An overview of the architecture and components of an experimental multimedia system is given. The prototype has both real-time and online communication capabilities. It supports both the peer-to-peer model and the client-se... View full abstract»

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  • Using the object space: a distributed parallel make

    Publication Year: 1993, Page(s):234 - 239
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    The author presents the object space approach to distributed computation. It allows for decoupled communication between program components by providing a shared data space of objects. The object space approach extends the sequential language C++ with coordination and communication primitives, such as those in Linda. It integrates inheritance into the associative addressing scheme and facilitates p... View full abstract»

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  • TMN-based management of intelligent networks-medium-term and long-term perspectives

    Publication Year: 1993, Page(s):62 - 68
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (624 KB)

    The existence of national and vendor-specific intelligent network (IN) platforms within Europe and the emerging calls for international IN service offerings in the light of a common European telecommunications market present challenging management requirements for IN-structured telecommunication environments in the coming age. The first stage of IN development (Capability Set I) has been standardi... View full abstract»

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  • An algorithm and architecture to support cooperative multimedia editing

    Publication Year: 1993, Page(s):2 - 7
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    Groupware systems have been made possible by developing algorithms and architectures which support collaborative tasks. The main rules of these algorithms are to maintain a global coherence state of the cooperative system and to control the information flow amongst the co-users. By architecture the authors mean the way the cooperative system is organized in order to enable the cooperative algorith... View full abstract»

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  • A new fault-tolerant network architecture: a composite banyan network

    Publication Year: 1993, Page(s):181 - 187
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    A new fault-tolerant architecture in multistage interconnection networks, called the composite banyan network, is proposed. The network is constructed by superimposing the reverse banyan network onto the banyan network. Basic building blocks in the composite banyan network are 3×3 switching elements (SEs) with log2N stages. The major advantage of the composite banyan network over ... View full abstract»

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  • A reactive flow control mechanism in ATM network with end-to-end transport

    Publication Year: 1993, Page(s):256 - 261
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    A source rate control mechanism called RCT (rate control for end-to-end transport), which reacts on instantaneous internal congestion, is developed. As the propagation delay is relatively long in ATM (asynchronous transfer mode) networks in comparison with transmission time, the feedback information on congestion can be late. To avoid low utilization of communication resources caused by the wrong ... View full abstract»

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  • Programming flexible distributed real-time systems

    Publication Year: 1993, Page(s):326 - 331
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    Discusses the implementation of distributed real-time systems employing the active object model. This approach handles time constraints as part of a broader concept: quality of service (QOS). This generalization is necessary to deal with many current real-time applications, particularly those related to multimedia communications View full abstract»

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  • An architecture for managing distributed systems

    Publication Year: 1993, Page(s):40 - 46
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (676 KB)

    The authors describe an architecture for managing distributed systems which has been jointly specified by two Esprit projects, SYSMAN (7026) and IDSM (6311). The emphasis, in this architecture, is on the use of domains to group managed objects and partition the management structure to cope with very large scale inter-organizational distributed systems. Another key aspect of the architecture is a p... View full abstract»

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  • The network-memory in a global distributed processing system

    Publication Year: 1993, Page(s):368 - 374
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    The authors present two scenarios of a target data processing/communication architecture that alleviate the main identified bottlenecks and pave the way towards a global distributed system supporting multimedia-based applications. The proposed processing/communication paradigm is based on the shared-memory capabilities offered by the optical network. A new structure, referred to as the network-mem... View full abstract»

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  • An integrated approach to shared synchronous groupware workspaces

    Publication Year: 1993, Page(s):157 - 163
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (536 KB)

    A unified framework for multimedia shared workspaces and their associated floor control that treats both audio and video components uniformly is presented. To this end, a classification scheme is presented which groups the shared workspaces based on multiple orthogonal criteria. For visual displays, this includes the group-orientation of the applications, the organization of the display, and the c... View full abstract»

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  • Cooperative access to relational and object-oriented federated databases

    Publication Year: 1993, Page(s):222 - 227
    Cited by:  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Much work has been done in the field of heterogeneous federated database systems (FDBSs), but almost all this work deals with relational systems or, eventually, with the integration of hierarchical and network models and the relational model. The authors present a prototype that allows access to relational (INGRES) and object-oriented (O2) database systems composing a federation. They assume that ... View full abstract»

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  • Toward modular concurrency control for object-oriented distributed systems

    Publication Year: 1993, Page(s):240 - 246
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    Object-based distributed systems are intended to merge the benefits of both object-based languages and distribution. To make such systems useful, it is, however, necessary to extend the basic object model so that it can permit the expression of distribution related aspects. The author discusses the issues raised by designing transaction concurrency control within an object-oriented distributed sys... View full abstract»

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  • CapNet-using gigabit network as a high speed backplane

    Publication Year: 1993, Page(s):380 - 386
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    The authors propose a wide area distributed shared memory (DSM) system in which the memory hierarchy is integrated into the switching network. The system requires only one message to access a mobile shared object, as compared to two in a directory-based approach. The authors simulated a wide-area DSM on the NSFNET and showed that the approach reduced memory fault delay significantly View full abstract»

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  • DEMOS: a distributed decision-making open support system

    Publication Year: 1993, Page(s):208 - 214
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (600 KB)

    Manufacturing management information systems are increasingly complex, with low integration and difficult decision making. The system DEMOS, presented here, deals with the processes of decision support, at different levels of the enterprise. The system specification makes use of ODP (open distributed processing) concepts, so that truly open distributed processing can be guaranteed View full abstract»

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  • Completeness of the equational semantics for Basic LOTOS

    Publication Year: 1993, Page(s):396 - 403
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The logical correspondence between the equational semantics of Basic LOTOS and is standard, derivational one is proven. A derivational semantics is traditionally given by means of a set of axioms and deduction rules which define a deduction system. With such semantics, some difficulties arise when dealing with deduction rules with negative premises; also, the proof that a transition cannot take pl... View full abstract»

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  • The System Architect's Assistant for design and construction of distributed systems

    Publication Year: 1993, Page(s):284 - 290
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    Distributed systems are conveniently described, constructed and managed in terms of their software structure or architecture. However, few current platforms exploit the architectural view. The authors outline current work on the provision of an architectural methodology and graphical support tool, the System Architect's Assistant, for the design and engineering of distributed systems. The tool sup... View full abstract»

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  • A fail-safe architecture of service control and management system for intelligent networks

    Publication Year: 1993, Page(s):69 - 73
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The authors propose a fail-safe architecture of a network information control system (NICS) and fault handling mechanisms for highly available NICSs. The NICS consists of seven processors, including duplicated common channel signaling processors (CCPS), duplicated service logic processors (SLPs), a service management processor (SMP), duplicated operations and administrations processors (OAPs), and... View full abstract»

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  • Constructing a distributed multimedia joint viewing and tele-operation service for heterogeneous workstation environments

    Publication Year: 1993, Page(s):8 - 15
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    JVTOS (joint viewing and tele-operation service) is an advanced teleservice to support cooperative work over distance which allows distributed users to work in a collaborative fashion with multimedia. JVTOS comprises facilities for session management, floor control, multimedia application sharing, telephoning, and audio/video communication. It provides generic support for cooperation-aware multime... View full abstract»

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  • Parallel programming on reconfigurable meshes with buses

    Publication Year: 1993, Page(s):188 - 193
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    Several mesh-like architectures have been proposed to support parallel computing. These connect the processor mesh with a system of reconfigurable buses. In this work, the authors present several examples to illustrate the ease with which efficient (in fact, constant time) programs can be developed for the weakest of these architectures. The examples are from computational geometry View full abstract»

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  • Congestion avoidance is interconnected local area networks

    Publication Year: 1993, Page(s):262 - 268
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    The interconnection of dissimilar LANs and devices over a high-speed backbone network can create congestion at a destination LAN (output) gateway when more than one device or LAN attempts to simultaneously communicate with the same device or LAN. The authors address the issue of congestion avoidance in LANs interconnected by a high speed backbone. A congestion-avoidance scheme that requires input ... View full abstract»

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  • Schedulability analysis of multi-access protocols for distributed real-time systems

    Publication Year: 1993, Page(s):332 - 338
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    The class of online protocols which exhibit deterministic properties in spite of a lack of global knowledge are considered. Such protocols (e.g. tree protocols) yield computable bounds on the duration of collision resolution. The authors show that combining such deterministic properties with feasibility tests, such as those developed in real-time scheduling, permits the design of provably correct ... View full abstract»

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  • An object-oriented approach to software design for distributed real-time computing systems

    Publication Year: 1993, Page(s):297 - 303
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (596 KB)

    In distributed real-time computing systems for complicated applications like command, control, communications and intelligence, time constraints are severe and adaptability is required to provide high availability and survivability of computing resources. An object-oriented approach to software design for distributed real-time systems is presented. In order to support adaptability of the software ... View full abstract»

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