Web services are becoming the dominant paradigm for distributed computing and electronic business. This has raised the opportunity for service providers and application developers to create value added services by combining web services. Several web service composition solutions have been proposed, e.g. BPEL4WS. However, these approaches are either not flexible or too complicated as they lack p...

In this paper, a Mobility Corresponding Location-Aware Information Services based on embedded RFID Platform that integrates the existed RFID systems and digital information content services server is proposed. According to user’s RFID tag, the platform accesses the remote digital content database and broadcasts the corresponding digital content related to the end-user’s personal requirements, l...

Many online services adopt a password-based user authentication system because of its usability. However, several problems have been pointed out on it, and one of the well-known problems is that a user forgets his/her password and cannot login the services. To solve this problem, most online services support a mechanism with which a user can reset a password. In this paper, we consider a provab...

The construction of highly reliable planetary-scale distributed services in the unreliable Internet environment entails significant challenges. Our research focuses on the use of loose binding among service components as a means to deploy distributed services at scale. An event-based publish/subscribe messaging infrastructure is the principal means through which we implement loose binding. A un...

Extensibility enables system services to be adapted to changing hardware and software trends. Providing extensible system services need not necessarily entail construction of new operating systems or inefficient implementations. Rather it can be effectively incorporated into existing commercial operating systems. We have incorporated the programming and run-time support necessary to build exten...

The Service-Oriented Computing paradigm enables the construction of distributed systems by assembling loosely coupled pieces of software called services, which have clear interfaces to their functionalities. Service interface descriptions have many aspects, such as complexity and quality, all of which can be measured. This paper presents empirical evidence showing that services interfaces maint...

This paper presents a quality ontology that formalizes all the needed knowledge for the realization of a multi-perspective and adaptive evaluation of e-government services. Different perspectives are taken into account and the mappings between them are defined using the presented ontology, enabling a comprehensive and holistic view of quality. Based on the quality ontology presented, the evalua...

In the world of Service Oriented Architectures, one deals with networks of cooperating components. A component offers services; to deliver a service it possibly needs services of other components, thus forming a service tree. This tree is built dynamically and not known beforehand. It is hard to verify the behavior of a service tree by using standard verification techniques, because these techn...

Constructing applications with services shared by third parties is popularly adopted. Because of the autonomy of such services, mismatches are inevitable when to construct or execute such applications. An approach to service adaptation is proposed. Business process is introduced to support exploratory application construction. Adaptors for service adaptation are realized based on algebra operat...