Service-oriented computing promotes the construction of applications by composing distributed services that are advertised in an open service market. In such an environment, individual services may change and evolve dynamically, requiring composite services to adapt to such changes. The prevailing strategy is to react on failures and replace the defective component of the composite service. How...

The possibility of a direct link between business workflows and the supporting application system is often seen as the critical strength of the SOA paradigm. Though in practice, today’s web-service technology is often used just to invoke detailed functions of particular application systems. The basic SOA does not address management and other concerns that apply to all components in an SOA. Howe...

Agent-oriented methodologies, as they have been proposed so far, mainly try to suggest a clean and disciplined approach to analyse, design and develop MASs by using specific methods and techniques. Moreover, different studies have been proposed for the evaluation of agent-oriented methodologies adopting specific types of evaluation and criteria. However, little effort has been devoted to the co...

We propose the use of Soft Constraints as a natural way to model Service Oriented Architecture. In the framework, constraints are used to model components and connectors and constraint aggregation is used to represent their interactions. The “quality of a service” is measured and considered when performing queries to service providers. Some examples consist in the levels of cost, performance an...

Most healthcare organisations are service-oriented, fundamentally centred on critical services provided by medical and nursing staff. Increasingly, these human-centric services rely on softwareintensive systems, i.e. medical devices and health informatics, for improving different aspects of healthcare, e.g. enhancing efficiency through automation and patient safety through smart alarm systems. ...

Context-aware applications adapt their behavior depending on changes in their environment context. Programming such applications in a modular way requires to modularize the global context into more specific contexts and attach specific behavior to these contexts. This is reminiscent of aspects and has led to the notion of context-aware aspects. This paper revisits this notion of context-aware a...

Since the beginning of the Service-Oriented Architecture (SOA) paradigm, with its various implementation technologies such as Web services, the focus of industrial communities has been on providing tools that would allow seamless and flexible application integration within and across enterprises’ boundaries. In this paper, the authors present a Context-based, Service-oriented Modeling and Analy...

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We introduce a link intensity-based ranking model for recommending relevant users in human interaction networks. In open, dynamic collaboration environments enabled by Service-oriented Architecture (SOA), it is ever more important to determine the expertise and skills of users in an automated manner. Additionally, a ranking model for humans must consider metrics such as availability, activity l...

Continuously increasing complexity and scale of distributed real-time systems have exposed the limitations of their existing development methodologies. This fact is evident by the unsustainable rate of increase in the development and maintenance costs of such systems. In this paper, we present a generic, service-oriented framework for distributed real-time systems. The proposed framework can po...