A web album service allows a user to publish photo albums on the web and view albums of other users. Through broadband mobile telecom, users can enjoy watching contents of web albums at any place in real time. User experience on mobile web album is affected by the transmission delay of mobile network, which determines whether the user needs to wait to view the images. We propose a prefetching m...

Web Services and Web Service composition languages for Web Service choreography are becoming more and more important in the area for inter-enterprise application and process integration. A huge amount of work has been done in the area of business process while web service composition languages have been the subject of intense research efforts recently. However the aspects of modeling these soft...

In this paper the design and implementation of fault tolerable architecture for scientific workflow engines is presented. The engines are assumed to be implemented as composite web services. Current architectures for workflow engines do not make any considerations for substituting faulty web services with correct ones at run time. The difficulty is to rollback the execution state of the workflo...

Increasingly, application developers are looking for ways to provide users with higher levels of personalization that capture different elements of a user's operating context, such as her location, the task that she is currently engaged in, who her colleagues are, etc. While there are many sources of contextual information, they tend to vary from one user to another and also over time. Differen...

This paper describes an approach towards allowing lightweight nomad devices like mobile phones to access semantic services that have either been advertised by agents or follow the semantic web services paradigm. The limitations of lightweight devices like lack of capability to process XML documents or to deal with complex data types and perform computationally demanding tasks are overcome by us...

As mobile technologies become widespread, teachers and students will be increasingly mobile, using more portable devices and interacting with computationallyenhanced learning environment. In this paper, we proposed a personalized knowledge service framework for mobile learning to adapt knowledge to different learners, leveraging Semantic Web Services in support of context awareness. This includ...

In this initial study, we explore how recent advances of mobile and web-based technologies can be utilized to support seamless knowledge building processes and to enhance contextualized learning experiences across multiple locations. Using design research as a methodological framework, we analyzed current practices and configurations of mobile learning in one primary school in Singapore, and co...

Mobile information community develops quickly, as mobile telecommunication technology matches to the third generation. XML-based GIS becomes a global standard and the foundation. Recent developed Geography Markup Language (GML) allows integration of GIS location-based services, telematics, and intelligent transportation systems. In this paper, we propose a tourism information system for support...