In this paper, we present an intelligent ubiquitous middleware which provides semantic service discovery based on context-awareness and a variety of intelligent ubiquitous convergence services for the applications of ubiquitous city. It is composed of four layers: Common Interface Layer, Context-aware Computing Layer, Ubiquitous Core Computing Layer and Grid Computing Layer. The layers cooperat...

FEUP presents a departmental structure, composed of six areas, Civil Engineering, Chemical Engineering, Electrical Engineering and Computers, Mechanical Engineering and Industrial Management, Mining Engineering, Metallurgical Engineering and Materials. To support the activities of these departments and of the Faculty as a whole there are several central services, including the Computer Centre, ...

Service-oriented Architecture supports software to be composed from services dynamically. Selecting and composing appropriate services according to business process, policies and non-functional constraints is an essential challenge. This paper proposes a method for automatic selection of the most relevant service for composition based on non-functional properties and the user’s context. In doin...

In the next generation Internet, the network should not only be considered as a communication medium, but also as an endless source of services available to the end-systems. These services (i.e. Overlay Applications) would be composed of multiple cooperative distributed software elements that dynamically build an ad hoc communication mesh (i.e. an Overlay Association). In this paper we propose ...

A challenging issue to web services interoperability is seamless data exchanges between web services to be composed. A solution to this problem is to establish semantic mappings from an information item to another. To do that, we present an approximate information mapping analysis. We propose a kernel-based structural similarity measure for XML documents. Simulation results with industrial XML ...

As Web Services have matured the interactions that the services have between themselves have gotten increasingly complex and sophisticated. Web services can be composed easily from other services, and these services can be made to orchestrate with each other in dynamic fashion. As web services have become dominant in the Internet and Grid systems landscape, a need to ensure guaranteed delivery ...

With the development of web sennces related technologies, more and more enterprises adopt web services to encapsulate their business systems to he published on Internet. Due to the different semantic of the web services, it brings much difficulty to implement the dynamic cooperation of the crossenterprise services ejficiently. This paper introduces a service composability model to support the d...

Semantic descriptions provide more accurate information related to operations supported by Web services, enabling their dynamic discovery and execution without human intervention. Furthermore, semantic descriptions allow Web services to be automatically combined by using discovery mechanisms able to identify composed services. These compositions can also be described and published as if they we...