The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Web services have become a primary mechanism for consuming resources available on the Internet. As more and more services are published on the Web, automated service discovery is critical to consumers to identify relevant and reliable services efficiently. In this paper, we enhance the Web Service Crawler Engine (WSCE) framework by introducing comparison measures to allow for more accurate identification,...
The World Wide Web environment has made all kind of services available online be it a simple movie ticket booking or the most complex processes such as outsourcing and banking. The services that are offered offline and semi-online (in which case part of the service transactions are online and part of it offline) are the result of the collaboration of static entities resulting in static service supply...
In this paper an adaptive control of Web QoS based on online identification is designed and implemented which dynamically adjust parameters of proportional-integral (PI) controller according to the changes of system model. In order to achieve admission control a session-based admission time-ratio feedback control mechanism is introduced which manages the amount of requests that the server can accept...
Utilizing service oriented architectures to enhance seamless collaborations and information sharing among nodes in mobile ad hoc networks with limited communication capability is a challenging task. In this paper a novel tree-based service discovery mechanism, able to achieve high accuracy in the process of service discovery, is proposed, which affords wireless communication overheads nearly linear...
With open market platform for media services or applications, 3rd party service providers can register and provide their own services. Under such an environment, developing solid IP media QoS/QoE measurement system and providing measurement results to 3rd party service providers are required. In this paper, we present IP media QoS/QoE measurement system we developed and open interface technology of...
With the increasing reliance of complex real-world applications on composite web services assembled from independently developed component services, there is a growing need for effective approaches to verifying that a composite service not only offers the required functionality but also satisfies the desired non-functional requirements (NFRs). In high-assurance applications such as traffic control,...
Tool development to support service management is a problem in optimizing service quality and reducing redundant work subject to competing constraints, both technical requirements and political realities. However, many of the constraints only become clear over time, and often only after a series of iterations as tooling exposes new or previously discounted constraints. We present a case study: the...
With the expansion of parallel access in WS-HLA system, it has become one of the most important problems in WS-HLA that how to implement the load balance, ensure the processing capacity and service quality. A load balance mechanism based on the feedback control of load is proposed in this paper, which uses the transparent mechanism of WS-HLA bus layer, and designs the load balance models and monitor...
The difference between what is expected from a service and what is perceived as a response underlies the estimation of the quality of that service. We propose a mechanism for the assessment of the service quality built on Dolce based expectations. Its components range from expectations creation according to the service description to monitoring of the expectations fullfillment according to the service...
Considering service semantic association degree, service quality and service composition efficiency, we used bipartite graph optimal matching algorithm to calculate the degree of semantic association and gave QoS (Quality of Service) model. On this basis, we proposed a Web service automatic composition algorithm AL-CWS and proved its validity. The test simulation proved that AL-CWS can automatically...
In order to relieve the conflict between improving service quality and enhancing resource efficiency in Web proxy cache cluster, a new elastic Web proxy cache cluster-EWPCC is presented. Basing on the “on demand” characteristic of cloud computing, EWPCC could acquire resource from cloud when the Web cache system is overloaded and release unnecessary cloud resource after load down. In this way, using...
As the non-functional semantics of Web service, Quality of Service (QoS) takes an essential role in actual use of Web services. It is necessary to take the QoS into account in the discovery and composition of Web services. This paper presents an automatic service composition algorithm to generate the composite services which are called service trees, and then addresses the issue of composite service...
The purpose of this research is to investigate the global contribution of researchers towards the literature on service science between 1995 and 2008. In achieving this aim, a review of papers published in five top service research journals was carried out. Papers from the following five service research journals were reviewed: International Journal of Service Industry Management, Journal of Services...
Mobile web browsing services have garnered tremendous momentum worldwide. However, every national market has differences. The Korean market represents one of these unique markets where the Korean IT consumer has been seen to be both a world innovator but also unique in adoption behavior. Understanding the unique factors predicting the widespread use of mobile web browsing services in a specific country...
Web services is a self-contained software component with a well-defined interface, it's a popular way of implementing a Service-Oriented Architecture. However, some new issues and challenges in testing of them come out due to their characteristics of distribution, source code invisibility etc. How to evaluate the availability of web services and improve the service quality is a challenging problem...
In the Web services environment, appropriate guarantee for the service quality can maximize the ability of web services and ensure the services to be carried out effectively and controllable, and that's what SLA contracts can offer. An SLA(service level agreement) is a contract agreed between a service client and a service provider which defines a series of service quality characters and metrics....
Web service composition is an important technology in domain of Web service. It provides an effective solution to complex Web application. In this paper, a new composition algorithm of semantic Web service based on QoS is proposed, which is concerned with the effect of some non-functional factors of service composite quality and the satisfaction with service composition. Experiments are carried out...
As the growth of IT spending has trended down to the mid-single digits in recent years, the IT services industry has continued to focus on productivity improvement to take out costs. While innovations in new service business and delivery models are keys to margin growth, service quality is ever more important to protect the client base. This paper reports end-to-end current practices in the enterprise...
Currently, increasingly large number of Geospatial Web Services are being built in Spatial Data Infrastructures (SDIs). Although services make it easy for users to access desired information, the quality of Geospatial Web Services will greatly affect the willingness of users in access of these services. Therefore, in order to improve the use of service-oriented architecture for distributed geospatial...
This paper presents a global planning based framework to construct a complex but optimal geo-processing workflow for integrating geospatial Web services, i.e. Web processing services in a distributed and collaborative environment. The geo-processing workflow is implemented using a Petri net model, in which the binding of services is modeled as a directed acyclic graph question. To screen the best...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.