An event service supporting autonomic management of ubiquitous systems for e-health

An event system suitable for very simple devices corresponding to a body area network for monitoring patients is presented. Event systems can be used both for self-management of the components as well as indicating alarms relating to patient health state. Traditional event systems emphasise scalability and complex event dissemination for internet based systems, whereas we are considering ubiquitous systems with wireless communication and mobile nodes which may join or leave the system over time intervals of minutes. Issues such as persistent delivery are also important. We describe the design, prototype implementation, and performance characteristics of an event system architecture targeted at this application domain

Open Source Software: All You Do Is Put It Together

The authors propose an infrastructure for rapidly prototyping applications from open source software components. The Adaptable Multi-Interface Communicator infrastructure (AMICO) is based on ideas of middleware platforms for component integration, but it focuses on pragmatic aspects of OSS integration, often absent from many existing integration platforms. The authors also identify the key requirements of middleware for rapid prototyping with OSS components and illustrate their approach through two examples in complex scenarios

Informal eCollaboration Channels: Shedding Light on “Shadow CIT”

There is some evidence of the unabated proliferation of employee-autonomous, informal in an enterprise sense, collaborative information technologies (CITs) to perform collaborative activities despite huge investments in CIT enterprise systems. This article will introduce the metaphorical construct of “shadow CIT” (similar to “shadow IT” – Raden, 2005; Schaffner, 2007) to describe the strategic choice to use autonomous CITs instead of formal enterprise CITs. “Shadow IT” has been defined by Raden (2005) as a set of IT tools used “for performing IT functions but not part of the mainstream IT organization” (p.1). Similarly, “shadow CIT” solutions are employee-autonomous: they are not implemented as part of the organisational IT infrastructure, neither have they received any targeted organisational investment. Several research questions are explored in this paper. The existence of “shadow IT” has been argued to imply a failure on the part of enterprise IT to provide all of the services to meet their users‟ needs. Does the existence of “shadow CIT” imply a failure of enterprise CITs of a similar kind? If shadow CITs are found to be [capable of] filling gaps within enterprise CITs, what kind of gaps are these? Often, without being able to articulate why, users appear to shun solutions and good architecture within enterprise CITs in favour of the ability to get their work done through autonomous “shadow” solutions. What kind of motivation may be driving such decisions

Le contexte comme base de la conscience de groupe

Colloque avec actes et comité de lecture. nationale.National audienceDans cet article, nous proposons une nouvelle façon d'aborder le problème de la conscience de groupe, par l'utilisation du contexte de travail d'un utilisateur. Nous détaillons la modélisation d'un utilisateur par son contexte, ainsi que les méthodes permettant une telle modélisation. Nous montrons alors que l'utili- sation du contexte permet d'avoir une conscience de groupe plus complète, plus adèquate et plus adap- table

Event notification services: analysis and transformation of profile definition languages

The integration of event information from diverse event notification sources is, as with meta-searching over heterogeneous search engines, a challenging task. Due to the complexity of profile definition languages, known solutions for heterogeneous searching cannot be applied for event notification. In this technical report, we propose transformation rules for profile rewriting. We transform each profile defined at a meta-service into a profile expressed in the language of each event notification source. Due to unavoidable asymmetry in the semantics of different languages, some superfluous information may be delivered to the meta-service. These notifications are then post-processed to reduce the number of spurious messages. We present a survey and classification of profile definition languages for event notification, which serves as basis for the transformation rules. The proposed rules are implemented in a prototype transformation module for a Meta-Service for event notification

Service d'agrégation d'événements dans une plateforme coopérative

Ce mémoire présente une approche pour l'agrégation des événements de conscience de groupe dans une plateforme coopérative basée sur un serveur. nous avons proposé dans un peremier temps une architecture fonnectionnelle inspirée de travaux précédents. Dans un deuxième temps, nous avons proposé une méthode d'agrégation des événement sur le serveur, ainsi que sa stratégie d'integration dans la plateforme LibreSource. Cette méthode est basée sur la notion de traitement d'événement complexe

Context-Based Workplace Awareness: Concepts and Technologies for Supporting Distributed Awareness in a Hospital Environment

Abstract. Maintaining an awareness of the working context of fellow co-workers is crucial to successful cooperation in a workplace. For mobile, non co-located workers, however, such workplace awareness is hard to maintain. This paper investigates how context-aware computing can be used to facilitate workplace awareness. In particular, we present the concept of Context-Based Workplace Awareness, which is derived from years of in-depth studies of hospital work and the design of computer supported cooperative work technologies to support the distributed collaboration and coordination of clinical work within large hospitals. This empirical background has revealed that an awareness especially of the social, spatial, temporal, and activity context plays a crucial role in the coordination of work in hospitals. The paper then presents and discusses technologies designed to support context-based workplace awareness, namely the AWARE architecture, and the AwarePhone and AwareMedia applications. Based on almost 2 year' deployment of the technologies in a large hospital, the paper discuss how the four dimension of context-based workplace awareness play out in the coordination of clinical work

End user programming of awareness systems : addressing cognitive and social challenges for interaction with aware environments

The thesis is put forward that social intelligence in awareness systems emerges from end-Users themselves through the mechanisms that support them in the development and maintenance of such systems. For this intelligence to emerge three challenges have to be addressed, namely the challenge of appropriate awareness abstractions, the challenge of supportive interactive tools, and the challenge of infrastructure. The thesis argues that in order to advance towards social intelligent awareness systems, we should be able to interpret and predict the success or failure of such systems in relationship to their communicational objectives and their implications for the social interactions they support. The FN-AAR (Focus-Nimbus Aspects Attributes Resources) model is introduced as a formal model which by capturing the general characteristics of the awareness-systems domain allows predictions about socially salient patterns pertaining to human communication and brings clarity to the discussion around relevant concepts such as social translucency, symmetry, and deception. The thesis recognizes that harnessing the benefits of context awareness can be problematic for end-users and other affected individuals, who may not always be able to anticipate, understand or appreciate system function, and who may so feel their own sense of autonomy and privacy threatened. It introduces a set of tools and mechanisms that support end-user control, system intelligibility and accountability. This is achieved by minimizing the cognitive effort needed to handle the increased complexity of such systems and by enhancing the ability of people to configure and maintain intelligent environments. We show how these tools and mechanisms empower end-users to answer questions such as "how does the system behave", "why is something happening", "how would the system behave in response to a change in context", and "how can the system’s behaviour be altered" to achieve intelligibility, accountability, and end-user control. Finally, the thesis argues that awareness applications overall can not be examined as static configurations of services and functions, and that they should be seen as the results of both implicit and explicit interaction with the user. Amelie is introduced as a supportive framework for the development of context-aware applications that encourages the design of the interactive mechanisms through which end-users can control, direct and advance such systems dynamically throughout their deployment. Following the recombinant computing approach, Amelie addresses the implications of infrastructure design decisions on user experience, while by adopting the premises of the FN-AAR model Amelie supports the direct implementation of systems that allow end-users to meet social needs and to practice extant social skills