Web services orchestrations and choreographies require establishing Quality of Service (QoS) contracts with the user. This is achieved by performing QoS composition, based on contracts established between the orchestration and the called Web services. Typical QoS parameters include maximum query throughput, response time, security, and validity of the response. Usually, QoS contracts are stated...

In an open electronic service market, competing service providers offer services to clients who may choose freely among the service types and service providers. Before the service provision, a client needs to identify a particular server and negotiate a service contract that determines the contractual constraints for the service interactions. Part of the contract will be an agreement on the ser...

Web services have the potential to offer the enterprises with the ability to compose internal and external business services in order to accomplish complex processes. Service composition then becomes an increasingly challenging issue when complex and critical applications are built upon services with different QoS criteria. However, most of the existing QoS-aware service composition techniques ...

The problem of QoS Routing for MANET posses several challenges that must be addressed. To select the most optimal route from source to destination, one has to choose from a set of routes with the corresponding quality of connectivity and resources. A rationale for multiple routes is presented. We argued that QoS routing protocol should exploit the rich non-disjoint node connectivity over disjoi...

Wireless technology’s like Bluetooth and W-LAN has reached a tremendous attention the last years. The manufacturing industry could probably make large benefits from using these technologies. In this paper we propose new definitions of QoS parameters to be able to handle real-time traffic in wireless networks. Initial assumptions regarding media access in a multihop network is presented. Finally...

The Data Distribution Service (DDS) standard defines a data-centric distribution middleware that supports the development of distributed real-time systems. To this end, the standard includes a wide set of configurable parameters to provide different degrees of Quality of Service (QoS). This paper presents an analysis of these QoS parameters when DDS is used to build reactive applications normal...

This paper is part of a study of intelligent architectures for distributed control and communications systems. The study focuses on optimizing control systems by evaluating the performance of middleware through quality of service (QoS) parameters and the optimization of control using Quality of Control (QoC) parameters. The main aim of this work is to study, design, develop, and evaluate a dist...