COLLABORATECOM 2009
TrustCol 2009CollaborateSN 2009

    COLLABORATECOM

    5th International ICST Conference on Collaborative Computing: Networking, Applications, Worksharing

    The Fifth International Conference on Collaborative Computing (CollaborateCom 2009) will continue to serve as a premier international forum for discussion among academic and industrial researchers, practitioners, and students interested in collaborative networking, technology and systems, and appli…

    The Fifth International Conference on Collaborative Computing (CollaborateCom 2009) will continue to serve as a premier international forum for discussion among academic and industrial researchers, practitioners, and students interested in collaborative networking, technology and systems, and applications.

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    Editor(s): James Joshi and Tao Zhang
    Publisher
    IEEE
    ISBN
    978-963-9799-76-9
    Conference dates
    11th–14th Nov 2009
    Location
    Crystal City, Washington DC, USA
    Appeared in EUDL
    29th Nov 2011
    Appears in
    IEEEXplore

    Copyright © 2011–2013 ICST

    • VaaS: Videoconference as a service

      Research Article in 5th International ICST Conference on Collaborative Computing: Networking, Applications, Worksharing

      Pedro Rodríguez, Daniel Gallego, Javier Cerviño, Fernando Escribano, Juan Quemada, Joaquín Salvachúa

      Abstract
      Internet is a place nowadays where interoperating services are offered which can be integrated or mashed up in order to fulfill user demands. This paper proposes a way to offer videoconference as a W…Internet is a place nowadays where interoperating services are offered which can be integrated or mashed up in order to fulfill user demands. This paper proposes a way to offer videoconference as a Web service over an interface which can be used by third parties to enrich their applications. This interface includes a security mechanism supporting delegated authorization to allow integration into third party's environments. Via this interface virtual rooms are provided where users can collaborate with audio, video, shared applications, IM, etc. An implementation of these concepts is described, including performance figures and validation results. We would finally like to stress that this architecture has been defined to support a scalable cloud computing service over the Internet.
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    • GColl group-to-group videoconferencing system: design and first experiences

      Research Article in 5th International ICST Conference on Collaborative Computing: Networking, Applications, Worksharing

      Petr Slovák, Pavel Troubil, Petr Holub

      Abstract
      We present a videoconferencing tool, GColl, which aims to support collaboration among remote groups of participants. GColl supports mutual gaze as well as partial gaze awareness for all participants,…We present a videoconferencing tool, GColl, which aims to support collaboration among remote groups of participants. GColl supports mutual gaze as well as partial gaze awareness for all participants, while still retaining a modest technical requirements: a camera and an echo-canceling microphone at each site; and a laptop with two USB cameras for each user. The environment is also easily deployed and allows quick changes in numbers of participants at individual sites. It is therefore suitable even for ad-hoc groups or teams with small budgets. A quantitative user study has been conducted in order to evaluate functionality of GColl with promising results. Additionally, the tool is available for download as an open-source project.
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    • LTM-SOLA - a service-oriented application to integrate high-tech laboratories and virtual knowledge spaces

      Research Article in 5th International ICST Conference on Collaborative Computing: Networking, Applications, Worksharing

      Henning Sommerkamp, Jonas Schulte, Reinhard Keil, Johann Rybka, Ferdinand Ferber

      Abstract
      High-tech laboratories are an important kind of knowledge source, nevertheless most of today's laboratory architectures consist of tight coupled devices with proprietary interfaces. Although there ar…High-tech laboratories are an important kind of knowledge source, nevertheless most of today's laboratory architectures consist of tight coupled devices with proprietary interfaces. Although there are several approaches to implement cross-functional and heterogeneous infrastructures, these solutions do not consider high-tech laboratories. Therefore, we developed a service-oriented architecture for laboratories called LTM-SOLA, an application to control the devices by a modern Web interface based on JavaEE and Seam technologies. Furthermore, we show how to use field bus couplers instead of programmable logic controllers (PLC) to enable single laboratory devices to be used in different test environments.
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    • Enforcing relationships privacy through collaborative access control in web-based Social Networks

      Research Article in 5th International ICST Conference on Collaborative Computing: Networking, Applications, Worksharing

      Barbara Carminati, Elena Ferrari

      Abstract
      Web-based social networks (WBSNs) are today one of the hugest data source available on the Web and therefore data protection has become an urgent need. This has resulted in the proposals of some acce…Web-based social networks (WBSNs) are today one of the hugest data source available on the Web and therefore data protection has become an urgent need. This has resulted in the proposals of some access control models for social networks. Quite all the models proposed so far enforce a relationship-based access control, where the granting of a resource depends on the relationships established in the network. An important issue is therefore to devise access control mechanisms able to enforce relationship-based access control by, at the same time, protecting relationships privacy. In this paper, we propose a solution to this problem, which enforces access control through a collaboration of selected nodes in the network. We exploit the ElGamal cryptosystem to preserve relationship privacy when relationship information is used for access control purposes.
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    • A policy management framework for trusted cross-domain collaboration

      Research Article in 5th International ICST Conference on Collaborative Computing: Networking, Applications, Worksharing

      Zhengping Wu, Hao Wu, Yuanyao Liu

      Abstract
      Cross-domain collaboration between enterprises needs a trusted execution environment. Policy-based management is a promising and convenient way to construct and manage such an environment. Since mana…Cross-domain collaboration between enterprises needs a trusted execution environment. Policy-based management is a promising and convenient way to construct and manage such an environment. Since management of security and trust policies from collaborating domains has to handle different policies and heterogeneous policy enforcement platforms, an architectural innovation of policy management in this environment is needed. In this paper, a policy management framework is designed and implemented to provide a trusted cross-domain collaboration environment. Merits of this new framework are illustrated through an application in the web services environment.
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