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Aiming at optimizing Web service composition which satisfies user's multiple QoS constraints, an efficient graph-based Web service composition approach, named Skyline improved Multi Constraint Shortest Path-Relax (Sky-MCSP-R), is proposed. Firstly, the approach selects Skyline services from candidate service spaces, thus it can construct the model of Web service composition directly on these high...
An heterogeneous distributed system using middleware to finish the visit to each other between P2P and Web Service system is brought forward, and the safety and veracity of visit the service must be ensured. The blue print of middleware is to adding the function of visit Web Service onto the basic function of peer. The middleware provides the service accepting and disposal of request to the Web Service,...
The data that is stored and/or transmitted on the Internet has been called "the blood of the IT". Along with the infrastructure and network based applications, data storage has been recognized as one of the major dimensions of information technology. The prosperity of Cloud Computing requires the moving from server-attached storage to distributed storage. Along with variant advantages, the...
This paper studies a mixed channel system including a traditional retail channel with added service and an Internet channel. After analyzing decentralized and centralized supply chain, we conclude that the decentralized supply chain ought to be coordinated. Then a revenue and cost sharing contract is devised to optimize the profit of supply chain and reasonable range of sharing coefficient is found...
This paper introduces design and implementation of distance education system based on P2P (peer to peer) and CDN (content delivery network) technology. The text gives the design of living, VOD (video on demand), testing and the conclusion at finally in the paper. Users can get the service of video on demand and living in the Web, be able to significantly save bandwidth and server costs. The P2P+CDN...
The process of traditional requirements acquisition and analysis is generally completed by domain experts and requirements analysts, which will greatly restrict the requirements modeling automatization degree and userpsilas participation degree in the requirements process. This paper presents a reflective mechanism for evolution of requirements specifications (RMERS) that supports OWL-S. In the phase...
With the popularity of Web services technology, the amount of the Web services resources is on the increase. It is well-known that the semantic Web technologies can bring the Web services into effect better, so the academia and enterprises give more and more attentions to the semantic Web technologies. But the semantic Web technologies have to face some difficulties below: the abilities of semantic...
In order to make a composite web service meet user's response-time requirement, the proper instance of each member web service should be selected and bound. In the literature, all the member web services of a composite web service are treated equally during the response-time management, but without considering their different capabilities of effecting the user's satisfaction. However, in a certain...
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