Applications in high speed ATM networks will specify quality of service (QoS) requirements on an end-to-end basis. Typical application QoS metrics are cell loss rate, delay jitter, throughput, and maximum delay. Obviously, the individual network control components will need to provide more stringent quality of service than speciied by the application. In this paper, we study (via simulation) ho...

Due to the increasing requirements on quality of service (QoS) for multimedia applications, wide area networks must be able to provide end-to-end performance guarantees. The ATM protocol, which offers an extensive traffic management functionality, achieves QoS in networks by providing various categories with different quality of service features. However, it is expensive and incompatible to the...

Security and quality of service (QoS) are two critical network services in today’s inter-networked world. Security mechanisms are used to provide proof of identity, preserve protected information, and ensure that information received has not been tampered with. Quality of service enables multi-media and other real-time services to use public data networks instead of a more expensive dedicated n...

The widespread demand for data applications over mobile networks requires that service providers guarantee a well-defined quality of service (QoS) for subscribers. Evaluating the QoS provided by service providers within a geographical area to determine which network provides the best QoS is a challenging task. The complex nature of mobile networks with multi-criteria and conflicting factors mak...

Service composition is popular for composing a set of existing services to provide complex services. With the increasing number of services deployed in cloud computing environments, many service providers have started to offer candidate services with equivalent functionality but different Quality of Service (QoS) levels. Therefore, QoS-aware service composition has drawn extensive attention. Mo...

Today’s mobile data applications aspire to deliver services to a user anywhere anytime while fulfilling his Quality of Service (QoS) requirements. However, the success of the service delivery heavily relies on the QoS offered by the underlying networks. As the services operate in a heterogeneous networking environment, we argue that the generic information about the networks’ offered-QoS may en...

Web service composition enables seamless and dynamic integration of Web services. The behavior of participant Web services determines the overall performance of a composition. Therefore, it is important to choose high quality services for service composition. Existing Web service selection and discovery approaches rely on non-functional aspects (also known as quality of service or QoS) e.g., re...

Applications in high speed ATM networks will specify quality of service (QoS) requirements on an end-to-end basis. Typical application QoS metrics are cell loss rate, delay jitter, throughput, and maximum delay. Obviously, the individual network control components will need to provide more stringent quality of service than speciied by the application. In this paper, we study (via simulation) ho...

0169-023X/$ see front matter 2008 Elsevier B.V doi:10.1016/j.datak.2008.08.004 * Corresponding authors. E-mail addresses: [email protected] (M. Fugin 1 This work has been partially funded by the Italia Future complex architectures for Web-Services-based delivery of services and objects require applications able to deal with different levels of Quality of Service (QoS) and able to describe a...

-Web Services are emerging technologies that enable application to application communication and reuse of services over Web. Semantic Web improves the quality of existing tasks, including Web services discovery, invocation, composition, monitoring, and recovery through describing Web services capabilities and content in a computer interpretable language. To provide most of the requested Web ser...