In service oriented systems, Quality of Service (QoS) is a service selection driver. Users evaluate QoS at run time to address their service invocation to the most suitable provider. Thus, QoS has a direct impact on providers' revenues. However, QoS requirements are difficult to satisfy because of the high variability of Internet workloads. Workload variability cannot be accommodated with tradi...

The UK Ministry of Defence’s Network Enabled Capability and USA Department of Defence’s Network-Centric Warfare programmes, are aimed at improving military effectiveness through the networking of existing and new military assets. Research is being carried out into architectures needed to support Network Enabled Capability – including emerging software architectures such as Service Oriented Arch...

Existing models of quality evaluation in public sector are mainly derived from the approaches within private sector. These models which represented by the New Public Management (NPM) paradigm, don&rsquot reflect the fundamental values of public administration, which are the very essence of the discipline and contrasting it from private sector. These core values, such as democratic citizenship, ...

The advent of Grid and SOA (Service-Oriented Architecture) technologies has brought new opportunities and challenges into the area of workflow. Service-Oriented Workflow (SOWF), which integrates web service and workflow technology, has become a mainstream for flexible integration among heterogeneous systems. In this paper, firstly the definition of the service is proposed with a three-dimension...

In a world where cyber crime is constantly increasing, pervasive computing is on the rise and information is becoming the most sought after commodity making an effective and efficient Information Security (IS) architecture and program essential. ‘With this improved technology and infrastructure, ongoing and pro-active computer investigations are now a mandatory component of the IS enterprise’ [...

An approach for constructing an Enterprise Service Bus based Service Oriented Architecture for individual clouds and then considering workflows where services from multiple clouds are used is formulated and a systematic methodology for performance evaluation of the architecture is presented. The participation in this environment is achieved by allowing the SOA to dynamically federate with servi...

In the conventional home network systems (HNS), a powerful centralized server controls all electric home appliances connected to provide value-added integrated services. However, when the number of the appliances increases and the appliances become more sophisticated, the conventional architecture would suffer from problems in superfluous resources, flexibility, scalability and reliability. Thi...

Web services are a solution for the integration of distributed information systems, autonomous and in real time, heterogeneous and auto adaptable to the context. This impact can resolve many problems in different system based on SOA and Web services. In this paper, we are interested in defining an approach to provide the different needs of a selfadaptability of Web services to context based on ...

In general, provenance describes the origin and well-documented history of a given object. This notion has been applied in information systems, mainly to provide data provenance of scientific workflows. Similar to this, provenance in Service-oriented Computing has also focused on data provenance. However, the authors argue that in service-centric systems the origin and history of services is eq...

During the last years, several approaches for the design of software services in service-oriented architectures (SOA) have been proposed. Often these approaches are too rough or too academic to provide guidance for real world SOA projects. Moreover, since the existing SOA design approaches are often not sufficiently validated, their successfulness in practice can be doubted. The research presen...