By large-scale services (LSS) we understand IT services that are being deployed over unbounded large-scale infrastructures. Typical examples may be found in e-commerce scenarios, in computational Grids, or in ubiquitous computing environments. The more such services will be composed on the fly from other services the more dependability becomes a challenge. Service dependability is about error p...

Semantic service descriptions have paved the way for flexible interaction with services in a mobile computing environment. Services can be automatically discovered, invoked and even composed. On the contrary, the user interfaces for interacting with these services are often still designed by hand. This approach poses a serious threat to the overall flexibility of the system. To make the user in...

The Web services framework is enabling applications from different providers to be offered as services that can be used and composed in a loosely-coupled manner. Subsequently, the aggregation of services to form composite applications and maximize reuse is key. While choreography has received the most attention, services often need to be aggregated in a much less constrained manner. As a number...

As Web services become more and more popular, how to manage multimedia Web services that can be composed as value-added service solutions remains challenging. This paper presents a service-oriented multimedia componentization model to support Quality of Service (QoS)centered, device-independent multimedia Web services, which seamlessly incorporates cuttingedge technologies relating to Web servi...

Service-Oriented Architecture (SOA) and Web services are becoming the universally accepted architectural style for development of modern information systems of enterprises. But the methods of design in SOA are not well established yet. The most of current methodologies are focused on composition of business processes from services. In this work, SOA based design is considered as design of infor...

A Web Service is a component written in any language, deployed on any platform, which has a standard wrapping layer based on XML.The component can interact with other applications which themselves comply with the Web Services standards. Generally, a single service does not satisfy the users needs that are more and more complex. Therefore, services must be made able to becomposed to build new va...

Automated web service composition is one of the major promises of serviceoriented architecture, where services can be discovered and composed dynamically and automatically. To investigate the methods for composite web service construction, we conducted an experiment on creating useful composite web services from real existing web services where semantic annotations are not available. The empiri...

A major challenge in pervasive computing environments is to provide users with complex, context-sensitive applications, dynamically composed from networked services. In this paper, we present an approach to the dynamic, context-aware composition of services to perform user tasks, i.e., software applications abstractly described on the user’s handheld device. Both networked services and user tas...

Although conceived for web services, it is shown how BPEL (Business Process Execution Language) can be used to orchestrate a collection of grid services. This is achieved using the technique of CRESS (Communication Representation Employing Systematic Specification) to describe the composition of grid services. CRESS descriptions are automatically translated into LOTOS (Language Of Temporal Orde...

The provision of services in ubiquitous computing environments, or smart spaces, presents a number of unique management challenges. One of these challenges is to assure that the quality of service perceived by smart space users can be managed to meet user and provider goals. Such assurance will be complicated by the fact that many smart space services are composed, possibly dynamically, of a nu...