Titlebook: Distributed Applications and Interoperable Systems; 9th IFIP WG 6.1 Inte Twittie Senivongse,Rui Oliveira Conference proceedings 2009 IFIP I

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Conference proceedings 2009ntext awareness, model-driven development, middleware for ubiquitous computing and sensor networks, ad hoc network protocols, peer-to-peer systems, and overlays. They are organized in topical sections peer-to-peer networks, adhoc networks, dependability, and infrastructure and services.

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D-Praxis : A Peer-to-Peer Collaborative Model Editing Frameworkion. Unfortunately, few tool support is provided for managing this huge set of models. In such a context of collaborative work, the approach commonly adopted by the industry is to use a central repository and to make use of merge mechanisms and locks..In this article we present a collaborative model

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A Reflective Middleware to Support Peer-to-Peer Overlay Adaptationt has become evident that increasingly configurable approaches are required to ensure appropriate overlay support is provided for divergent applications. This is exacerbated by the increasing heterogeneity of networked devices expected to host the overlay. Traditional adaptation approaches rely on s

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Automated Assessment of Aggregate Query Imprecision in Dynamic Environments settings, the returned result may not be consistent, i.e., it may not accurately reflect the state of the environment. It can thus be difficult to reason about the meaning of a query’s result. Reasoning about imperfections in the result becomes even more complex when in-network aggregation is emplo

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Fault-Tolerant Aggregation by Flow Updatingthe execution of distributed applications. In the particular case of wireless sensor networks, data collection is often only practicable if aggregation is performed. Several aggregation algorithms have been proposed in the last few years, exhibiting different properties in terms of accuracy, speed a

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A Generic Group Communication Approach for Hybrid Distributed Systemsing from synchronous, to time-free asynchronous model. Though similar in principles, distinct implementation mechanisms have been employed in the design of group communication for distinct system models. However, the hybrid nature of many modern distributed systems, with dynamic and varied QoS guara

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A Flexible Approach for Business Processes Monitoring also on their failsafe execution. Service providers have to obligate their services to perform according to negotiated Quality of Service (QoS) parameters. For example, response time and throughput are important parameters to achieve fast and efficient services. Overloaded or failing services may c