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Much work is underway within the broad next generation technologies community on issues associated with the development of services to foster collaboration via the integration of distributed and heterogeneous data systems and technologies. Various technology-driven paradigms have emerged, including Web Services, Web 2.0, Pervasive, Grids and Cloud Computing. Recently, some new paradigms have emerged,...
The transfer from the current power grid to the power grid of the future implicates major changes for all stakeholders participating in the smart grid. Hence, utilities have to face several novel problems in terms of service provision. In this contribution, we examine two complementary views in the overall context of smart grids. We argue for a combination of those two views, based on ontology mappings...
The combination of BPM&SOA has been considered a powerful strategy for companies to be more agile. However, integrating BPM and SOA has many challenges especially when composition of applications is envisaged. The main contribution of this work is to propose an integrated model that deals with the problem of service discovery over largely distributed software services providers, including QoS...
Traditional Learning Management Systems (LMS) failed in providing pervasive and personal services since lacking flexibility and adaptivity. This paper addresses the problems in existing LMSs and reviews related technologies in improving interoperability, reusability, flexibility and cost efficiency, followed by proposing a new framework design using service-Oriented architecture.
Testing Service Oriented Architecture applications is a challenging task due to the high dynamism, the low coupling and the low testability of services. Web services, a popular implementation of services, are usually provided as black box and using testing techniques based on implementation is limited. This paper presents an approach to support the use of the structural testing technique on web service...
Service-oriented architectures (SOA) are becoming the dominant computing paradigm, where all resources are abstracted as services to form services society. Open-access and easy-visiting of services are keys to services eco-system, thus service search engines will play an increasingly important role. Generally retrieved services are listed and ranked by the content similarities to queries. One problem...
Evolution of learning processes is almost always linked to social changes and/or technological changes. One of those processes is eLearning, which is involved in the changes brought about by trends 2.0. This new tendencies consider the user, socialization and collaboration as the main important elements and this must be considered also in eLearning contexts. But today learning environments do not...
In the context of service-oriented architectures, services are expected to fulfill certain service characteristics, such as loose coupling or high autonomy. When designing new services, several decisions have to be made, such as how to group capabilities into services, that influence these characteristics. Existing development processes focus on the description of necessary steps to create services...
The service-oriented approach with his essential advantages of a uniform interface and the possibility to reuse distributed and heterogeneous services in other contexts has led to a high popularity in Business-to-Business (B2B) scenarios. However, the development of user interfaces (UI) lacks of comparable efforts for the Business-to-Consumer (B2C) interaction because B2C is not properly reflected...
Service-oriented Architectures support the provision, discovery, and usage of services in different application contexts. The Web Service specifications provide a technical foundation to implement this paradigm. Moreover, mechanisms are provided to face the new security challenges raised by SOA. To enable the seamless usage of services, security requirements can be expressed as security policies (e...
A variety of methods have been proposed for selection of service providers as well as adaptation of business processes to manage service providers. However, each method is discussed under a certain set of often implicit assumptions or expectations. It has thus not clearly discussed how selection methods and adaptation methods can be chosen and combined in a consistent way with each other and with...
Web service composition is to integrate existing web services to provide a compound service which satisfies specified requirement. However, traditional web service compositions fail to provide different compound services under various scenarios. In this paper, we propose an approach to compose services with context. A context ontology is defined to describe the scenario for user. An abstract service...
Reusing software components is an important but not standardised task in software engineering. This will become a problem if requirements change in the future. By the use of web services in service-oriented architecture, as a communication interface for devices, the automation area has to define how to handle these reusable units. At the moment, no standardised way is defined. This publication analyses...
For the last decade, the area of e-business and e-service has expanded rapidly. Service Oriented Architecture (SOA) is introduced to create and execute a business process on the Web. In order to create and execute the business process, relevant web services need to be composed or reconfigured based on the business process logic. Traditionally, web services composition and reconfiguration are optimized...
Computing has reached the time of distributed applications everywhere. Service-oriented architectures are more and more used to organize such complex and highly dynamic applications into business processes calling services discovered in registries at load-time. In this context, Quality of Service (QoS) and agility in business processes become key issues. Instead of binding business processes to services...
Pervasive applications, like smart living, geriatrics care, agricultural development, etc, are rapidly developed recently. Context-awareness and workflow-centric are important characteristics of the applications. Service-oriented architecture which provides flexibility in integrating heterogeneous devices and communication networks might improve the execution of pervasive applications. To integrate...
Web service is one of the fundamental technologies in implementing Service Oriented Architecture (SOA) based applications. One of the essential challenges in web service based applications is how to find a set of suitable web service candidates with regard to a user's requirement. Currently most web service discovery systems have constrains on the content and format of submitted web service request...
Automated Web service composition is currently one of the major research problems in the area of service oriented computing. Web services facilitate seamless business-to-business integration. Whenever it becomes difficult to find a single service for a particular task, a composition of services that can together perform the given task, is required. In general, this is accomplished using Service Oriented...
Service-Oriented Architecture (SOA) fosters the development of loosely coupled applications. Web services have been favored as a promising technology to implement SOAs. Since web services are often involved in complex business processes and safety-critical systems, it is important that they are of high level of reliability. In this paper a strategy for event-based testing of web services is introduced...
Adaptive and reconfigurable service provisioning is a promising research direction for NGN service technologies. It will lay the foundation of a converged network environment, in which users can feel free to enjoy various advanced services. In this paper we propose a new Adaptive Service Provisioning Architecture(ASPA) applicable to NGN. The architecture is composed of five subsystems enriching the...
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