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Service-oriented architecture constitute a key technology for providing interoperability among heterogeneous systems, and integrating inter-organization applications in a loosely coupled fashion. However, the rapid growth of Web Services on the Internet makes services discovery become harder. Quality of Service is the key factor to differentiate web services with same functionality. In order to distinguish...
Consumers increasingly use online services in their everyday life: when they drive a car, at home and at work. We address the problem of selecting for the consumer, the most valuable online service, according to the consumer value preferences. We combine our work for value analysis of service networks with our work on selecting services based on quality of service requirements. We show with examples...
The vision of an open and global Internet of services (IoS) is driven by globalization and fast changing settings when trading on a world-wide scope. It requires automated on-line techniques for handling services and resources themselves, for advertising and discovery as well as for the on-the-fly negotiation of proper terms for their use. In such a setting covering completely different branches and...
Enterprise software is being transformed from an installed product to a hosted service whereby customers pay a subscription fee to access functionality using a Web browser or other clients. The service-oriented architecture (SOA) and Web services will play a key role in driving the vision of software as a service (SaaS). As the number of services and users grow, there is a need for a trusted service...
With the popularity of Internet technology, Web services are becoming the most promising paradigm for distributed computing. However, when a single Web service fails to meet service requestor's multiple function needs, web services need to be dynamically configured together to form a web service composition. Since there may be many configurations providing identical functionality with different quality-of-service...
Emergence of web services have generated new business models, opportunities and challenges. One of the major challenge faced in effecting utilization of these web services is composition of non functional features such as performance, security and geographical affinity of these services. Existing standards do not address the composition of such non functional features. A formal model based on trace...
Traditional workflow management systems (WfMS) is hard to meet the requirements of the dynamic, flexible modern business process. In recent years, Web services technology has been developing. It not only makes the activity in workflow by Web services form, but also workflow itself is invoked by Web services, especially semantic Web services technology is developing, which makes it possible to compose...
Information privacy is usually concerned with the confidentiality of personally identifiable information (PII), such as electronic medical records. Nowadays, Web services are used to support different applications which may contain PII, such as healthcare applications. Thus, the information access control mechanism for Web services must be embedded into privacy-enhancing technologies. Further as application...
We developed a quality of service (QoS) management system to support service level management (SLM) for global enterprise services. The QoS management system is integrated with one of our enterprise services in a preproduction system, an identical system as the production system but in a test environment. Lab experiments showed that our integrated solution helps global enterprise services to better...
In recent years, organizations have been shifting focus to their core business competencies, and reducing total cost of ownership (TCO) associated with training and management of their IT infrastructure. In the same motif, organizations are establishing security and survivability frameworks as an integral part of their business strategy so as to provide an acceptable quality-of-service for their clients...
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