The lack of semantics in WS-SecurityPolicy (WS-SP) hampers the effectiveness of matching the compatibility between WS-SP assertions. To resolve this problem, we present in this paper a semantic approach for specifying and matching the security assertions. The approach consists in the transformation of WS-SP into an OWL-DL ontology and the definition of a set of semantic relations that can exist...

Something that is still missing, but strongly needed, in collaborative grid environments is a stable, flexible and dynamic resource management. This management should optimise collaboration and cooperation among several resources keeping resources constraints, preconditions and rules. This paper presents how to achieve these objectives, by means of a Collaborative Awareness Management (CAM) mod...

Several languages for specification of various aspects of semantics, such as quality of service (QoS), of XML Web services have appeared recently. However, none of them is widely accepted by industry. On the other hand, WS-Policy (a general framework for the specification of policies for Web services) has strong industry support, but currently lacks detailed specification of ontological meaning...

In this paper, we present two translations of the Web Service Policy Framework (WS-Policy) into OWL-DL. First, we provide an overview of existing web policy languages and a general idea of their expressivity. Then we provide a quick introduction to WS-Policy and we argue the benefits of using OWL and RDF to express web service policies. Lastly, we provide two translations from WS-Policy to OWL,...

In general, Policy-based approaches play an important role in the management of web services, for instance, in the choice of semantic web service and quality of services (QoS) in particular. The present research work illustrates a procedure for the web service selection among functionality similar web services based on WS-Policy semantic matching. In this study, the procedure of WS-Policy publi...

The paper presents a monitoring framework for WS-BPEL processes. It proposes WS-CoL (Web Service Constraint Language) as a domain-independent language, compliant with the WS-Policy framework, for specifying user requirements (constraints) on the execution of Web service compositions. WSPolicy and WS-CoL provide a uniform framework to accommodate both functional and non-functional constraints, e...

Service-Oriented Architectures (SOAs) suggest that IT systems should be developed from coarse-grained, loosely coupled, business-aligned components, so called services. One way towards loose coupling is to refrain from hard-coding policies in the system and to represent them explicitly. Semantic Web Services (SWS) add semantics to Web services (main realization of SOAs). However, SWS research c...

The WS-Policy framework has been introduced to allow policy to be expressed and associated with Web Services thereby enabling organizations to manage the quality of their services. How the specified polices are kept consistent with the organization’s regulations, and how to match service and client policies requirements for effective service discovery, are issues yet to be addressed. In this pa...

This paper introduces a model for expressing quality according to both applications and human users perspectives. Such a model, compliant with the WS-Policy framework, not only mediates between the application and human user perspectives, but is also capable of considering the different importance that the user can assign to a quality dimension. In addition, the paper introduces a policy select...

This paper presents how to manage Virtual Organizations to enable efficient collaboration and/or cooperation as a result of a flexible and parametrical model. The CAM (Collaborative/Cooperative Awareness Management) model promotes collaboration around resources-sharing infrastructures, endorsing interaction by means of a set of rules. This model focuses on responding to specific demanding circu...