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Services in Distributed and Networked Environments, 1996., Proceedings of Third International Workshop on

Date 3-4 June 1996

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Displaying Results 1 - 23 of 23
  • Proceedings of Third International Workshop on Services in Distributed and Networked Environments

    Publication Year: 1996
    Request permission for commercial reuse | PDF file iconPDF (1535 KB)
    Freely Available from IEEE
  • Author index

    Publication Year: 1996
    Request permission for commercial reuse | PDF file iconPDF (45 KB)
    Freely Available from IEEE
  • Enabling customizable World-Wide Web access to X.500 directory

    Publication Year: 1996, Page(s):162 - 168
    Cited by:  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    This paper deals with the service aspect of X.500 directory services to provide a user-configurable, easy-to-use, and platform-independent directory user interface. To deploy the X.500 white pages service widely, for instance, such an integrated user interface is essential. The availability of powerful World-Wide Web (WWW) clients is already providing this means if they have proper links with the ... View full abstract»

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  • Management policy service for distributed systems

    Publication Year: 1996, Page(s):2 - 9
    Cited by:  Papers (12)  |  Patents (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1136 KB)

    Interpreting policy in automated managers facilitates the dynamic change of behaviour of a distributed management system by simply changing policies. This paper describes a management policy notation which can be used to define both authorisation policies (what activities a manager is permitted to do) and obligation policies (the activities a manager must perform). Some example policy specificatio... View full abstract»

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  • A scheme for the quantification of congestion in communication services and systems

    Publication Year: 1996, Page(s):52 - 60
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (900 KB)

    The characterization of congestion in communication systems is a pre-requisite for the definition of mechanisms that can be used in congestion control with the goal to minimize its effects on the performance of distributed applications. In order for those mechanisms to work properly, there is the need to quantify congestion of services and systems. This paper proposes a scheme that enables the qua... View full abstract»

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  • A privilege management system for a secure network

    Publication Year: 1996, Page(s):147 - 154
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    Modern research projects may involve dozens of geographically distributed collaborators who access distributed information, applications workstations and devices. We are developing an architecture and methods for distributed, decentralized privilege management and enforcement with regard to access to distributed mass storage data and information via the Internet. Our approach does not require modi... View full abstract»

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  • Case study: how analytic modeling can reveal performance problems in distributed systems

    Publication Year: 1996, Page(s):61 - 67
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (556 KB)

    We present a case study to illustrate how modeling a distributed system can reveal serious performance problems and lead to performance improvement. We developed a simple queueing model for remote procedure call (RPC) that run over the connectionless user datagram protocol (UDP) in the Open Software Foundation's Distributed Computing Environment (OSF/DCE). Initially, the model-predicted RPC round ... View full abstract»

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  • Scalable services for resource management in distributed and networked environments

    Publication Year: 1996, Page(s):98 - 105
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    Sharing hardware and software resources among networked workstations has become common practice. Resource management in such systems is complex because of physical distribution of the resources, communication delays and the lack of global state informations. This paper describes a scalable load monitoring service and a scalable resource query service developed in the Warp project to provide necess... View full abstract»

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  • A relational model for distributed systems monitoring using flexible agents

    Publication Year: 1996, Page(s):10 - 17
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    Monitoring of distributed systems for management purposes is a complex task aggravated by heterogeneity and distribution of resources and tools. This paper presents a method for monitoring distributed systems by applying concepts from the field of relational databases. The user may request information from the entire network by means of simple relational queries which are automatically optimized a... View full abstract»

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  • A distributed hypermedia link service

    Publication Year: 1996, Page(s):156 - 161
    Cited by:  Papers (5)  |  Patents (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (748 KB)

    Open hypermedia is an established model within the hypermedia research community; it provides an approach to engineering flexible and maintainable hypermedia systems based on the concept of a hypermedia link service. However the World Wide Web, which provides an important solution for distributed hypermedia, is typically used as a closed hypermedia system: it does not exploit the link service conc... View full abstract»

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  • Requirements for personalized user environments in telecommunications

    Publication Year: 1996, Page(s):35 - 42
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    “The network is the computer” is a vision currently coming true. That “computer”, however is characterized by a complexity, chaos, and abundance of information which makes it increasingly difficult for a single (let alone nonexpert) user to efficiently utilize it. We propose an architecture that allows users to have their own personal view of the network, and therefore make... View full abstract»

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  • Information distribution by fleamarket system

    Publication Year: 1996, Page(s):139 - 146
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    Information distribution with copyright control has become a major topic in electronic commerce. With systems based on the secure WWW there are some problems in application to the “pay per view (PPV)” service and in the system structure which concentrates system functions. To overcome these problems, we propose a new information distribution model which allows commercial information re... View full abstract»

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  • Understanding any IDL lesson one: DCE and CORBA

    Publication Year: 1996, Page(s):114 - 121
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    The co-existence of middleware platforms, eg. DCE and CORBA, creates a new problem of heterogeneity-the heterogeneity of middleware platforms. In this paper a partial approach to overcoming this heterogeneity is presented-the translation between different interface definition languages (IDL) and the comparison of interface specifications in different IDLs. In particular, a mapping between DCE IDL ... View full abstract»

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  • Security and auditing of VPN

    Publication Year: 1996, Page(s):132 - 138
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    This paper describes an implementation architecture of an auditing system applied to a simulated virtual private network service. It analyses the VPN security and audit requirements and illustrates the auditing system components: the audit manager, the audit and the virtual private network service managed objects View full abstract»

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  • A programmable concurrency control service for CORBA

    Publication Year: 1996, Page(s):108 - 113
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    Concurrency is a paramount concern in a real-time system, where a trade-off exists between high availability on the one hand and application consistency on the other. We argue that a traditional concurrency control service (CCS) based on a predefined set of lock modes may be too confining as it does not allow the programmer to set their own concurrency level tailored to application semantics. We p... View full abstract»

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  • Application migration for mobile computers

    Publication Year: 1996, Page(s):20 - 26
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    Mobile computers, termed Walkstations are expected to be used under massively changing conditions. In order to operate effectively they must adapt their behaviour as conditions change. This paper presents a low latency, heterogeneous application migration service, built from a distributed programming environment, which enables applications to adapt from a rich, office based computing environment t... View full abstract»

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  • Services to support consistency in mobile collaborative applications

    Publication Year: 1996, Page(s):27 - 34
    Cited by:  Papers (1)  |  Patents (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (724 KB)

    This paper describes the design of services to support consistency in collaborative mobile applications. The requirements for application level consistency in groupware applications are discussed and it is argued that existing consistency services for mobile environments fail to address these requirements because they assume infrequent (write) sharing of information. We present the design of a gro... View full abstract»

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  • An implementation model for the management functions of the RM-ODP

    Publication Year: 1996, Page(s):92 - 97
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    The advances in the communication technology with high transmission rates together with the future (and present) needs of the users for integration and cooperative work stimulated the development of open service environments. This paper presents an implementation model for the management functions of the Reference Model for Open Distributed Processing (RM-ODP), proposed by the ISO, where distribut... View full abstract»

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  • Annotations for synchronization constraints in CORBA IDL

    Publication Year: 1996, Page(s):122 - 128
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    Most distributed applications require mechanisms for the synchronization of cooperating components. In a CORBA application this functionality is currently hidden in the methods of the server objects. This complicates design, validation and maintenance of distributed applications. To improve this situation we propose guards and concurrency annotations for the CORBA IDL. Our approach allows the expl... View full abstract»

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  • The multi-media telephone: directory service and session control for multi-media communications

    Publication Year: 1996, Page(s):169 - 173
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    Multi-media communication tools now exist which have support for group communication using multicast protocols. The same tools can be used in unicast mode for one-to-one communication. The focus of development so far has been on group-working and conference support. As a result, there is a session directory tool that allows users to advertise conferences and to join the ones that interest them. On... View full abstract»

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  • Towards a general location service for mobile environments

    Publication Year: 1996, Page(s):43 - 50
    Cited by:  Papers (10)  |  Patents (47)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    With the advent of mobile computing devices and cheap location sensing systems, location information has become an important resource both for mobile and `desktop' users. We describe some key concepts a scalable ubiquitous location service should be based on. Firstly, we discuss the general problem of client-server computing in mobile environments. Secondly, we describe the theoretical and design ... View full abstract»

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  • Group communication as an infrastructure for distributed system management

    Publication Year: 1996, Page(s):84 - 91
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (716 KB)

    In the past, system management tools for computer systems were oriented towards managing a single computer with, possibly, many users. When the networked system concept became widespread, centralized solutions such as the Network Information Service (NIS) were developed to help the system manager to control a network of workstations. Today, when many sites contain hundreds of workstations, these s... View full abstract»

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  • RPC over advanced network technologies: evaluation and experiences

    Publication Year: 1996, Page(s):68 - 75
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    This paper describes measurements and experiences with remote procedure call (RPC) over different network technologies, and with different levels of functionality. The major basis is the RPC of the OSF Distributed Computing Environment. We first discuss performance based on local area networks; also including secure RPC features. We then present performance results over WAN connections via the Int... View full abstract»

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