Grid computing is generally viewed as task assignment to distributed resources. While in practice many factors do complicate this scheduling process (e.g. resource monitoring and discovery, resource failures, resources ownership and policies ... etc), the process is still viewed as resource scheduling according to some criteria. The criteria are referred to as Quality of Service (QoS) attribute...

In an interactive multimedia environment that handles multiple sessions dynamically, a mechanism for controlling the QOS among sessions is very important. It is, however, di cult to achieve such QOS control without any system support. A new resourcemanagement mechanism and QOS-control architecture for multimedia applications are needed. This paper rst discusses features required for such archit...

In this paper, we present a conceptual object model for specifying Quality of Service (QoS) that forms a basis for a UML profile for QoS. The conceptual model is based on CQML, a lexical language for QoS specification. A QoS characteristic represents some aspect of the QoS of a system, service or resource that can be identified and quantified. A QoS statement expresses some QoS by constraining ...

Voice, video and multimedia applications are sensitive to the QoS provided by the underlying IP network. The DiffServ architecture offers a set of QoS mechanisms for IP networks. The “binding” of the applications QoS needs with the QoS features offered by the DiffServ networks is still an open problem. The simplest approach is to have a static configuration of QoS and therefore no direct intera...

Quality of Service (QoS) analysis and prediction for Web service compositions is an important and challenging issue in distributed computing. In existing work, QoS for service compositions is either calculated based on constant QoS values or simulated based on probabilistic QoS distributions of component services. Simulation method is time consuming and can not be used in real-time applications...

This Article presents a thorough overview of QoS routing metrics, resources and factors affecting performance of QoS routing protocols. The relative strength, weakness, and applicability of existing QoS routing protocols are also studied and compared. QoS routing protocols are classified according to the QoS metrics used type of QoS guarantee assured.

This paper presents a CORBA-based Quality-of-Service (QoS) management framework for distributed multimedia services and applications. The QoS MIB has been defined for the QoS management of various multimedia services, and consists of information objects that represent a set of layered QoS parameters. These managed objects are organized into four logical groups: service, application, system, and...

HighSpeed Multimedia Networks (HSMN) have diverse Quality of Service (QoS) requirements. Designing QoS routing protocols that optimizes multiple QoS requirements is one of the major issues in these networks. Traditional routing algorithms are not adequate to handle QoS requirements of real-time multimedia applications. QoS Routing is defined as finding paths satisfying multiple QoS constraints....

In this study, a network quality of service (QoS) evaluation system was proposed. The system used a combination of fuzzy C-means (FCM) and regression model to analyse and assess the QoS in a simulated network. Network QoS parameters of multimedia applications were intelligently analysed by FCM clustering algorithm. The QoS parameters for each FCM cluster centre were then inputted to a regressio...

Although component middleware technologies have raised the level of abstraction by separating configuration mechanisms from the core business logic, application developers still have to map their application QoS policies/requirements onto these mechanisms effectively in order to correctly configure the underlying middleware. In this poster we describe Quality of service pICKER (QUICKER), a mode...