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.

    more »
    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

    • SECUND: A protocol for SECUre neighborhooD creation in wireless ad hoc networks

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

      Thaier Hayajneh, Prashant Krishnamurthy, David Tipper

      Abstract
      The ability to correctly determine their neighborhood is a fundamental requirement for nodes in ad hoc and sensor networks. Many applications, protocols, and system functionality rely on neighborhood…The ability to correctly determine their neighborhood is a fundamental requirement for nodes in ad hoc and sensor networks. Many applications, protocols, and system functionality rely on neighborhood discovery. Malicious nodes that taint neighborhood information using wormholes can significantly disrupt the operation of ad hoc networks. Protocols that depend only on cryptographic techniques (e.g, authentication and encryption) may not be able to detect or prevent such attacks. In this paper we propose SECUND, a protocol for creating a SECUre NeighborhooD, that makes use of discrepancies in routing hop count information to detect ¿true¿ neighbors and remove those links to nodes that appear to be neighbors, but are really not neighbors. SECUND is simple, localized and needs no special hardware, localization, or synchronization. We present approaches to improve the efficiency of the process. We evaluate SECUND using simulations and we demonstrate its effectiveness in the presence of multiple and multi-ended wormholes.
       more »

    • Multi-user multi-account interaction in groupware supporting single-display collaboration

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

      Bastian Steinert, Michael Grünewald, Stefan Richter, Jens Lincke, Robert Hirschfeld

      Abstract
      Combining support for single display collaboration with support for asynchronous and remote collaboration in one groupware challenges some basic assumptions of application design and brings up new re…Combining support for single display collaboration with support for asynchronous and remote collaboration in one groupware challenges some basic assumptions of application design and brings up new requirements for application platforms. While user accounts are central in many kinds of groupware, they are not respected in groupware support for multi-user single-screen interaction. Current support for this interaction paradigm does not allow users to act on their own behalf; they have to act on behalf of a host user. We suggest an approach to distinguish the interactions with different users in multi-user single-screen scenarios. Our approach enables applications to link actions to the acting user's account. We describe the integration of suggested concepts in the groupware ProjectTalk, an application for managing XP projects that supports multi-user single-screen interaction. All interacting users are allowed to work with ProjectTalk on their own behalf.
       more »

    • Supporting collaborative work through flexible Process Execution

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

      Stefan Jablonski, Michael Igler, Christoph Günther

      Abstract
      In this paper we present how a combination of declarative and imperative process modeling constructs facilitate compact presentation of complex process based applications. We show how to effectively …In this paper we present how a combination of declarative and imperative process modeling constructs facilitate compact presentation of complex process based applications. We show how to effectively implement such constructs in Prolog. Since our concept implicates a new way of interaction between process management system and user we also present our new concept of a worklist. It guides process executors through the execution of complex processes. Through this flexible way of executing processes collaborative work is much better supported than in traditional process management systems.
       more »

    • Dynamic data services

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

      Ruhollah Farchtchi

      Abstract
      Community networks require advanced domain-independent services that can be tailored for their use. Multi-agent architectures have been explored as an architectural approach to achieving a community …Community networks require advanced domain-independent services that can be tailored for their use. Multi-agent architectures have been explored as an architectural approach to achieving a community network or system. Building on the work that was done with, Enterprise Knowledge Agents, this paper looks at using data services and the challenges with respect to enabling a platform for query and representation of agent observed knowledge in the enterprise. The EKA paper describes a notional architecture for a multi-agent based system that catalogues and coordinates knowledge and collaboration in the enterprise. In that paper case agents are defined to collect and organize information for an individual in the enterprise. The challenge is that the agents require a method of storing the data as well as allowing the agents to query each other to understand what data may exist with other individuals in the organization. This paper explores the use of dynamic data services in solving the challenges with an environment where data must be shared and where multiple representations of data may exist as in the EKA system.
       more »

    • Integrating external user profiles in collaboration applications

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

      George Mathew

      Abstract
      Due to the increase in federated nature of collaboration applications, users from multiple institutions have the potential to participate in activities centered around common regions of interest. How…Due to the increase in federated nature of collaboration applications, users from multiple institutions have the potential to participate in activities centered around common regions of interest. However, existing technologies address external users at a coarse grained level. Consequently, mechanisms to integrate external user profiles into collaboration applications are practically non-existent. This prevents an end user from having locus of control in managing permissions to resources for users that are external to their parent institution. In this paper, the need for a fine grained access control mechanism for end users, that allows them to transparently manage permissions to external users in collaboration applications, is addressed. Mechanisms that need to be in place to provide a framework for realizing this capability are outlined. Some of the components that exist now are reviewed in this context. The end users will benefit from a holistic framework by having empowerment over resource management for external collaborators in a natural way.
       more »