The Universal Description Discovery & Integration (UDDI) is a standard for XML registry that enables functionality-based publication and discovery of Web services. This paper presents a UDDI extension to support Quality of Service (QoS) management in the context of Business Process Management Systems (BPMSs). To allow service selection, a BPMS architecture should include brokers to match consum...

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...

The lack of QoS attributes and their values is still one of the fundamental drawbacks of web service technology. Most approaches for modelling and monitoring QoS and web service performance focus either on client-side measurement and feedback of QoS attributes, or on ranking and discovery, developing extensions of the standard web service discovery models. However, in many cases, provider-side ...

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...

Service Oriented Architecture facilitates automatic execution and composition of web services in distributed environment. This service composition in the heterogeneous environment may suffer from various kinds of service failures. These failures interrupt the execution of composite web services and lead towards complete system failure. The dynamic recovery decisions of the failed services are d...

System NP Hardness problem is addressed and Mathematical framework is proposed for certificates and enhancement of security systems KeywordsKey Management, Certificates, NP

Component-based development (CBD) techniques have been widely used to enhance the productivity and reduce the cost for software systems development. However, applying CBD techniques to embedded software development faces additional challenges. For embedded systems, it is crucial to consider the quality of service (QoS) attributes, such as timeliness, memory limitations, output precision, and ba...

Distributed applications are increasingly using distributed object platforms such as CORBA, DCOM, and Java RMI to standardize object interactions. With this increased use comes the increased need for providing enhanced Quality of Service (QoS) attributes related to fault tolerance, security, and timeliness. This paper describes an approach to implementing such enhancements in a transparent, hig...

In this abstract, a hierarchical trade-off assessment model for networked systems is presented that constructs from the perspectives of systematic objectives, network component requirements, along with multiple quality of service (QoS) dimensions. The primary goal of this conceptual hierarchical trade-off assessment model is to provide a QoS evaluating mechanism for the networked systems. In ge...