Web services composition is the ability to integrate existing services to have value added services. Workflow-based services composition is one of the approaches proposed. eFlow is one of the Workflow-based service composition approaches. The approach is strong in providing a platform for adaptive and dynamic web services composition. However, it neglects the validation of the Quality of Servic...

Web services have got popular for developing Service-Oriented Architectures recently. As several web services are available to execute the same function, Quality of Service (QoS) turns into a discriminative factor which is significantly considered in service selection and service composition approaches. In different approaches, monitoring of services is used for evaluating QoS attributes. Custo...

Composing existing web services to obtain new functionalities is important for e-business applications. Deficiencies of aggregated web services can be compensated involving a redundant number of them for critical tasks. Key steps lie in Quality of Service (QoS) evaluation and selection of web services with good quality in order to avoid frequent and severe faults of a composite service. This pa...

With an expanding of Web services giving same functionalities, Quality of Service (QoS) is becoming an important criterion for selection of the best available service. So users need to know QoS information and the reliability of this information .This article presents a new model of reputation improved Web services discovery considering the quality of services that include a reputation administ...

To support Quality-of-Service (QoS) provisioning in highly dynamic mobile environments, we propose a signaling protocol allowing mobile users to contact a Differentiated Services bandwidth broker for QoS negotiation. The protocol can also be used for QoS negotiations between bandwidth brokers.

Multimedia applications such as video conferencing, multimedia news and distance learning require stringent quality of service (QoS) that the current Internet cannot provide. Specifications of differentiated services (DiffServ) were proposed with the hope that the services of legacy Internet and third generation (3G) networks present opportunities to offer end-to-end QoS guaranteed multimedia a...

The spread of distributed multimedia applications is setting forth a new set of challenges in the management of host and network resources for guaranteeing QUALITY AND SERVICE (QoS). When the multimedia applications compete for resources, as in the case of a cooperative multimedia environment, the management task becomes even more difficult.We have developed a cooperative multimedia environment...

Service composition has been recognized as a flexible way for resource sharing and application integration. Quality of service (QoS) is an important issue for composite services. In this paper, we address the issue of component services selection to ensures their composition satisfy given QoS constraints. We propose the concept of reduction tree as a general scheme to aggregate multi-dimensiona...

The vision of future information systems is that diierent forms of information are potentially accessible at anytime through the Internet. We describe challenges in the modeling and speciication of timing related multimedia (MM) services in open distributed systems. Management of multimediaservices in an open system is complicated by the heterogeneity of application requirements, multimedia inf...

The communications development requires interaction between converging heterogeneous technology environment, with quality and continuity of services to remain competitive. The full implementation of the Future Internet concept implies in the necessity to operate among heterogeneous technology platforms with continuity of QoS (Quality of Service), what leads to the necessity of an innovative bus...