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Large scale Service Oriented Architecture (SOA) developments are becoming increasingly reliant on registry services that manage Web Services using taxonomic attributes. At present a registry stores a Web Services interface definition and protocol bindings in WSDL, along with one or more XML schema files that define the structure of a SOAP message exchanged between Web Services operations and client...
This paper presents a methodology for composing a SOA service chain by evaluating and selecting a service for the purpose of business result optimization. The methodology requires the business performance model for applied services to measure the value produced by services in a specific business context. Understanding the business characteristics where services are applied is a prerequisite for evaluating...
The Web service technology is becoming the mainstream for implementing the distributed applications based on architecture oriented service. Simple Web service couldn't deal with the requirements of complicated distributed system. Some relevant Web services have to be integrated to a composite service to overcome it. Now, more attentions are paid to the quality of service of composite Web service....
Cloud/Grid environments are characterized by a diverse set of technologies used for communication, execution and management. Service Providers, in this context, need to be equipped with an automated process in order to optimize service provisioning through advanced performance prediction methods. Furthermore, existing software solutions such as GNU Octave offer a wide range of possibilities for implementing...
Availability of enormous processing power and immense storage capacity drive Cloud computing. Information industry oracles like Google and Microsoft are delivering their next generation of products through Cloud. With the success of Amazon Cloud computing service everyone is laying on line to adopt it. Increased processing capabilities of enterprise servers do not mean that hosted services can handle...
With the widespread of Web services (WS), more deployed services are being registered into a services registry, consequently giving rise to a series of problems. A conspicuous one is the large amount of functionally equivalent Web services returned by a service registry. A plausible solution is to involve QoS (quality of service) in the services discovery. However, some existing QoS-based discovery...
This paper presents the design principle for integrating quality management on Web service registry developed in UDDI specification and Web service quality management system (WSQMS). WSQMS, developed by NIA can measure and collect the quality information of Web services by its agency system installed on the Web service system. Web service registry is core system for registering and searching WSDL...
Many companies and governmental organizations are looking towards Web services, play an important key role in implementing service oriented architecture (SOA) as a platform that support a wide range of demanding applications. But current Web services standards have many critical limitations: performance degradation due to network latency and limited network bandwidth, vulnerability from security attacks,...
QoS-aware service management and composition has become an interesting research topic with the rapid development of service oriented architecture (SOA). Differently with Web-services based systems, the emergence of peer-to-peer (P2P) based distributed network technology brings more challenge to the QoS-aware service management and composition. In this paper, we propose our design of a QoS-aware hierarchical...
The following topics are dealt with: semantic Web service mining; QoS-aware Web service composition; ubiquitous environment; grid scheduling; XML; service oriented architecture; context-aware service; business process management; Web service testing and verification.
For the sake of service-sharing in a distributed computing environment, the Web Services infrastructure is designed. The proposed mechanisms for Web services discovery so far have assumed a centralized and peer-to-peer (P2P) registry. UDDI is one of the discovery services with centralized architecture. It induces performance bottleneck, restricts the scalability of this environment, and may result...
Many network devices implement capabilities to manipulate traffic depending on the application. Examples include a firewall or a load balancer. These are based on Layer 2-4 packet-based classifications such as port or protocol, or signature recognition. Although configurable or extensible via scripting, they are not generally programmable. We present an architecture extending classification to programmable,...
This article proposes a model of car-to-car networks based on an adaptive self-organization overlay network. Car-to-car network is one of the promising ways to deliver the information and services among cars in order to increase the safety and reduce the traffic congestion. However, conventional works focus on the low-level communication protocols. Little works are done on the model and its nature...
The next-generation network will enable provision of various multimedia applications, with different QoS requirements, over a common IP- based transport infrastructure. However, along with the service consolidation over IP and the rapid increase of network scale, the task of service and network management has become extremely complex and costly. Efforts are being made in various areas, for example,...
Current fashion systems to interconnect large software architectures are moving toward SOA based solutions. This new paradigm for designing system can be improved, in our opinion, by using semantics. Semantics can a play a main role in boosting interoperability thanks to current technologies to express knowledge and to describe semantic Web services (SWS). This paper tackles the provision of a Software...
We denote as self-properties the control a system exerts on itself autonomically to achieve and maintain quality-of service (QoS). Our focus is in external, non-intrusive approaches and in this paper we focus mainly timeliness objectives. The self-adaptation process must be guided by the specification of the desired qualities. In this paper we describe the design of a contract-broker (C-Broker) architecture...
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