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Pervasive systems are increasingly being designed using a service-oriented approach where services are distributed across wireless devices of varying capabilities. Service orchestration is a simple and popular method to coordinate web-based services but introduces a single point of failure and lacks the flexibility to cope with the greater variability of pervasive environments. Choreography in contrast...
There is growing interest in using workflows to describe, monitor and direct a wide-range of medical procedures in hospitals. Unlike their well-established business counterparts, medical workflows require a high degree of execution flexibility since it is impossible to anticipate all the possible circumstances that might influence their execution and it is important that staff are permitted to respond...
Policies could potentially be an important and cost-effective technique for building and managing pervasive systems. Historically, policy-based systems have been built using a policy environment that supports the specification and enforcement of policies for a range of management concerns such as adaptation and security. In this short paper we describe our experiences with challenges in building human-centric...
Mobile phones have become a truly ubiquitous computer. As such, it makes sense to target the mobile phone as a computing platform on which to deploy ubicomp applications. Yet, mobile phone operating systems were not originally designed for the vision of ubicomp. As a result, it currently takes a great deal of effort to create prototypes of the seemingly simplest ubicomp applications on mobile phones...
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