Scheduled System Maintenance:
Some services will be unavailable Sunday, March 29th through Monday, March 30th. We apologize for the inconvenience.
By Topic

Building Distributed Systems, IEE Colloquium on

Date 30 Nov 1990

Filter Results

Displaying Results 1 - 7 of 7
  • Mascot real time networks in distributed system design

    Publication Year: 1990 , Page(s): 1/1 - 110
    Cited by:  Patents (1)
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (396 KB)  

    Describes the use of Mascot real time networks in distributed system design. First the basic concepts of real time networks are discussed, followed by an outline of those aspects of the Mascot 3 notation which are particularly relevant in the design of multi-processor and distributed systems. Then a novel Data Interaction Architecture (DIA) is introduced which supports the use of network design principles for application in multi-processor configurations where communication is through shared memory. This DIA is extended to include the use of active communication elements for application in wider forms of distribution. Finally some design and implementation issues are addressed View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • IEE Colloquium on `Building Distributed Systems' (Digest No.170)

    Publication Year: 1990
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (16 KB)  

    The following topics were dealt with: Mascot real time networks in distributed system design; Ada 9X project for distributed systems; the Conic environment for distributed programming and application to a model airport shuttle system; ANSA approach to the design of distributed systems; building heterogeneous distributed multimedia systems and security for object oriented distributed systems View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Building heterogeneous distributed multimedia systems

    Publication Year: 1990 , Page(s): 611 - 613
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (160 KB)  

    Multimedia computing has emerged as a major area of research. Most of this work has centred on the stand-alone multimedia workstation with a variety of packages now available. The combination of multimedia computing with distributed systems offers even greater potential. However, much less work has been carried out in this area of distributed multimedia systems. This is principally because of the major problems encountered in bringing together the two areas of technology. One of these is heterogeneity. It is likely that most distributed multimedia environments will be heterogeneous, consisting of a number of different workstations interconnected by one or more types of network. Research at Lancaster is focusing on the problem of supporting distributed multimedia computing environments. The paper reports on the results of this research. More specifically, it concentrates on the approach to heterogeneity which has been adopted at Lancaster View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Security for distributed systems

    Publication Year: 1990 , Page(s): 8/1 - 8/3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (164 KB)  

    Introduces the main concerns and development of a model for security in distributed systems. The threats which need to be addressed in any security model for distributed system are examined. The nature of object oriented distributed systems is looked at in the security context and the outline of a model is drawn. Finally some issues on the use of the model are discussed View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • ANSA approach to the design of distributed systems

    Publication Year: 1990 , Page(s): 4/1 - 4/3
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (124 KB)  

    ANSA is unique because it follows a top down architectural approach. Ideas are harvested from leading edge distributed systems research and best elements are combined together into a coherent structure. The author gives this structure and the basic principles of the design methodology for the architecture View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Ada 9X for distributed systems

    Publication Year: 1990 , Page(s): 2/1 - 2/4
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (272 KB)  

    Developing software to control safety-critical applications requires programming abstractions that are unavailable in many of today's programming languages. The Ada programming language was designed to provide support for such applications within a unified language framework, but it is now commonly accepted that the language has not totally succeeded in achieving all its stated design goals. Ada has successfully addressed many of the software engineering issues associated with the production of large real-time software. It has failed, however, to satisfy applications requiring the use of multiple computers or parallel-intensive computation. Ada is under review. The goal of the revision activity, designated the Ada 9X project, is to provide essential language requirements with minimum negative impact and maximum positive impact on the Ada community. The paper reviews the emerging distribution requirements for Ada 9X View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A constructive approach to the design of distributed systems

    Publication Year: 1990 , Page(s): 3/1 - 315
    Save to Project icon | Click to expandQuick Abstract | PDF file iconPDF (844 KB)  

    The underlying model of distributed systems is that of loosely coupled components running in parallel and communicating by message passing. Description, construction and evolution of these systems is facilitated by separating the system structure, as a set of components and their interconnections, from the functional description of individual component behaviour. The Conic environment for distributed programming supports this model. In particular, Conic provides a separate configuration language for the description, construction and evolution of distributed systems. The Conic environment has demonstrated a working environment which supports system distribution, reconfiguration and extension. The principles of explicit system structure and context independent components that underlie Conic have lead naturally to a design approach which differs from that of both current industrial practice and current research. Its approach is termed `constructive' since it emphasises the satisfaction of system requirements by composition of components. The authors describe the approach and illustrate its use by application to an example, a model airport shuttle system which has been implemented in Conic View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.