Context-aware mobile applications are intelligent applications that can monitor the user’s context and, in case of changes in this context, consequently adapt their behaviour in order to satisfy the user’s current needs or anticipate the user’s intentions. The design of such applications relies on dynamic middleware platforms that consist of a variety of components. These components are distrib...

In the paper the authors propose an original solution to perform the remote control of measurement instrumentation, with the aim of realizing the experimental section of an E-Learning portal of Electrical and Electronic Measurement courses, based on Web Services implemented in Visual Basic.Net. The .Net technology proves to overcome drawbacks typically affecting most of the techniques for remot...

This paper presents an innovative approach for the publication and discovery of Web services. The proposal is based on two previous works: DIRE (DIstributed REgistry), for the user-centered distributed replication of service-related information, and URBE (UDDI Registry By Example), for the semantic-aware match making between requests and available services. The integrated view also exploits USQ...

In this work the Service abstraction is extended to support Quality of Service (QoS) attributes – and implemented in the Grid QoS Management (G-QoSM) framework. The framework supports three main functions: (1) providing mechanisms for establishing QoS guarantees via Service Level Agreements (SLAs), (2) enabling QoS management on allocated QoS-aware services, and (3) supporting discovery of serv...

Semantic Web Service (SWS) technology is developed to overcome the shortcomings of traditional standards, such as WSDL and UDDI, and enable maximal automation in all aspects of Web Service provision and use. But great improvement of capability in SWS-based service discovery is still desired. To address this issue, we present a distributed approach for Semantic Web Service publication and discov...

Currently all web services are published and found by making use of the WSDL and UDDI techniques. This forces the consumers to find and bind services at design time since WSDL relies on static descriptions. Also the current techniques don’t address runtime service selection based on a dynamic assessment of QoS attributes. Hence in this paper, a Semantic QoS Web Services Agent Framework (SQoSWSA...

As the Service Oriented Architecture (SOA) principles have gained importance, an emerging need has appeared for methodologies to locate desired services that provide access to their capability descriptions. These services must typically be assembled into short-term service collections that, together with code execution services, are combined into a meta-application to perform a particular task....

In the last eight years, registries for e-business, such as ebXML or UDDI, enabling enterprise of any size and in any geographical location to conduct their businesses on the World Wide Web, were developed. Applications in domains such as insurance (for example, insurance rating), financial services (loans, claims routing and management, fraud detection), government (tax calculations), telecom ...

The emergence of the Internet has changed the way in which many aspects of business are conducted. One such aspect, that of resource discovery, is being changed by the development of a number of resource discovery systems, which facilitate the discovery of businesses (and their resources) anywhere in the world, through the medium of the Internet. However, these systems lack the power to discove...

With the increasing growth in popularity of Web services, discovering relevant Web services becomes a significant challenge. The introduction of intentional services is necessary to bridge the gap between low level, technical software-service descriptions and high level, strategic expressions of business needs for services. Current Web Services technology based on UDDI and WSDL does not make us...