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.
The scope of IMS QoS management is limited to session initialization and QoS provisioning, thus lacking follow-up or monitoring functionality; neither does it tackle user differentiation. A tempting approach would be to leverage the standard 3GPP architecture by Assurance services based on TMForum's eTOM framework. This scenario would however expose a set of general business processes and would require...
Service compositions suffer changes in their partner services. Even if the composition does not change, its behavior may evolve over time and become incorrect. Such changes cannot be fully foreseen through prerelease validation, but impose a shift in the quality assessment activities. Provided functionality and quality of service must be continuously probed while the application executes, and the...
Web Service is a revolution technology on internet. It is changing the way of interaction of the web form information-oriented to service-oriented. Thus there comes a new kinds of business process, called web service business process. At the same time, with the complexity of the business environment, many enterprises pay more and more attention to the process management..BPEL-based process component...
BPEL (Business Process Execution Language) is one of the dominant ways to specify interactions between Web services. However, it is difficult to deal with behavioral properties of web services. Typically, well defined protocols may be violated by clients, thus leading servers to inconsistent states. In this paper, we propose to tackle this problem thanks to an automatically generated runtime monitor...
IMS (IP Multimedia System) facilitates a rapid deployment of new services enable new revenue streams for service providers, and improves the operating efficiency of the network by a convergence of heterogeneous into an existing IP network. In addition, it enables operators to simultaneously meet the requirements of fixed and mobile telephony. Because IMS “standardization” is limited to architecture,...
The performance of BPEL processes depends on the composing Web services. Monitoring Web service performance and adapting to changes in service performance are essential for creating self-tuning BPEL processes. BPEL lacks constructs for performance monitoring and offers little support for runtime adaptability. In this paper, we present a monitoring and dynamic binding infrastructure for BPEL that transparently...
This paper proposes a Diseases Notification System which is designed using a SOA pattern. Disease notification is an import component of the disease control systems. A successful diseases notification system will deliver positive effects for human beings. The proposed system is designed and implemented by use of the Business Process Execution Language for the business process layer and Enterprise...
One of the most interesting aspects of WSs is the possibility to combine them into Composite Web Services (CWSs). While Business Process Execution Language (BPEL) has emerged as the most popular language to orchestrate services, it introduces serious challenges with respect to the manageability of CWSs. This paper shows an approach to overcome these challenges with a model-aware execution of CWSs...
This paper presents DyAG, an innovative solution for dynamic allocation of resources for services workflows in Grid enviroments. The proposed solution is responsible with the efficient mapping of the services which make up a Business Process Execution Language workflow onto resources, represented by Web Services, from the Grid enviroment. The presented solution is part of a framework that aims to...
In this paper we introduce a new modeling tool for constraint handling in the area of workflow technology. The constraint handlers can be used to improve the quality of business processes but without changing already existing business logic. Todays workflow languages provide no possibility to model constraints and the actions in case the constraints get violated explicitly. Fault and event handling...
Assessing the quality of tests for BPEL processes is a difficult task in projects following SOA principles. Since insufficient testing can lead to unforeseen defects that can be extremely costly in complex and mission critical environments, this problem needs to be addressed. By using formally defined test metrics that can be evaluated automatically by using an extension to the BPELUnit testing framework,...
AO4BPEL applied Aspect Oriented Programming to executable business processes. Although modularized, AO4BPEL aspects do not have an explicit interface and the implicit one, based on XPath, is often fragile, hence reusing aspects in different processes is quite hard. Cooperative Aspect Oriented Programming aims at making aspects reusable by means of cooperative work between base code and aspects, realized...
An ideal engineering computational environment for solving design problems should be flexible, which is characterized by helping designers to establish solution strategy conveniently and integrating design resources effectively. In this paper, a flexible engineering computational system called engineering computational service grid (ECSG) based on grid portal technology and workflow technology is...
Quality of services(QoS) management has become an important issue for Web services. Indeed, QoS is becoming a crucial and a distinguishing criterion among functionally equivalent Web services. QoS management consists of two complementary tasks: monitoring and adaptation. Both are very challenging because of the unpredictable and dynamic nature of Web service composition. In this paper, we propose...
Spatial information service is a fundamental element for sharing and interoperating spatial information. Several reference specifications have been constituted by ISO and Open GIS Consortium (OGC) to provide standard interfaces of different services. For the purpose of complex task, chains distributed atom service together is a possible solution. How to link spatial information services quickly, efficiently...
Business user oritented business process monitoring plays a key role for enterprises to improve business processes' visibility and responsiveness. Usually an end-to-end business process is implemented by heterogenous technologies and their combinations in a SOA enviroment, for instance: business process execution language (BPEL), J2EE and any other technologies which can leverage Web service as composition...
The dynamic nature of the Internet poses various challenges to the successful execution of composite Web services. Failures are samples of these challenges. It needs to be addressed for the smooth progress of Web service composition. Unfortunately, the de facto standard for modeling composition namely BPEL is not equipped with mechanisms that let Web services "heal" themselves in case of...
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.