From the perspective of selecting service by QoS attributes, a computation method of QoS expectation value, which is based on Algorithm Prim, was presented to provide support for selection of service. On the basis of the ability of service providers, by Algorithm Prim, this method succeeded in calculating a set of balanced expectation values of QoS. Selection of service based on these QoS value...

Geoprocessing is a basic element in spatial data infrastructure (SDI). As more and more geoprocessing functions are available as Web Services in SDI, the quality of geoprocessing services has become an important concern in providing effective geoprocessing in a distributed environment. This paper introduces the design and implementation of GeoQoS to support QoS-aware geoprocessing on the Web. K...

Autonomic software component (ASC) QoS matchmaking problem for autonomic element has been taken as one of the most important issue in field of autonomic computing based on agent. Aimed at overcoming drawbacks such as subjectiveness and unfairness, and improving the self-configuration capability for autonomic element, we introduce evaluation mechanism of confidence of individual QoS attributes d...

QoS and Security features are playing an important role in modern network architecures. Dynamic selection of services and by extension of service providers are vital in today’s liberalized market of energy. On the other hand it is equally important for Service Providers to spot the one QoS Module that offers the best QoS level in a given cost. Type of service, response time, availability and co...

The definition of suitable abstractions and models for identifying, understanding and managing Quality of Service (QoS) constraints is a challenging issue of the Service Oriented Computing paradigm. In this paper we introduce a process calculus where QoS attributes are first class objects. We identify a minimal set of primitives that allow capturing in an abstract way the ability to control and...

Developers of QoS (Quality of Service) applications need component frameworks that support QoS to improve their development process. We propose to use the component infrastructure level for the integration of QoS facilities to avoid the problems of QoS infrastructures dependencies, and to simplify the development process of applications. This paper introduces our model of QoSaware component, an...

In this paper, we present the Gaussian process regression as the predictive model for Quality-of-Service (QoS) attributes in Web service systems. The goal is to predict performance of the execution system expressed as QoS attributes given existing execution system, service repository, and inputs, e.g., streams of requests. In order to evaluate the performance of Gaussian process regression the ...

In this study, we investigate security and quality of service (QoS) issues in clusterbased wireless sensor networks (WSN). Our QoS definition consists of four attributes, which are spatial resolution, coverage, network lifetime and packet collisions. And, the security scope of our study is limited by message integrity and authentication. We present a novel control strategy to maintain desired Q...

The success of the Web Service (WS) paradigm has led to a proliferation of available WSs. As these WSs are advertised in inter and intra-organizational registries/repositories, they have to be discovered based on the functional needs of the user. However, these registries rely on the current WS standard stack that uses WSDL and UDDI for WS description and discovery. Unfortunately, these two sta...

Web service technology offers facilities for business process automation. However, Business Process Management Systems (BPMSs) demand additional facilities. For instance, there is no Quality of Service (QoS) management support in the current Web service model. The goal of this paper is to propose a policy-based Web service infrastructure, which offers autonomic service integration using QoS att...