The Semantic Web is intended to enable machine understandable web content and seems to be a solution for many drawbacks of the current Web. It is based on metadata that describe the formal semantics of Web contents. In this paper we present an integrated and semi-automatic approach for generating shared-understandable metadata of data intensive Web applications. This approach is based on mappin...

This paper describes the Open Source Portal Framework (OSPF) for job submission to grid, which is developed based on JSR168 Portlet standard, with GridSphere Portal Framework, Globus Middleware and Gridway Meta-Scheduler. OSPF is providing web portal interface for Open Source Grid Community with the ultimate aim of accessing the distributed computing resources. This portal framework provisions ...

This paper gives a description of the portal user interface under development for the UK National Grid Service (NGS) by the Grid Technology Group at CCLRC Daresbury Laboratory. The first release of the NGS Portal was based on CHEF, the CompreHensive collaborativE Framework originally developed at the University of Michigan. A set of Grid-related tools has been successfully deployed to provide t...

Greenhouse gas data collected by different institutions throughout the world have significant scientific values for global climate change studies. Due to the diversity of data formats and different specifications of data access interfaces, most of those data should be first downloaded onto a local machine before they can be used. To overcome this limitation, we present a geospatial web portal f...

University portals are emerging all over the world. Portals have been perceived by many people as the technologies that are designed to enhance work and learning processes at university by making workflows simpler and information more readily available in a form in which it can be processed (Franklin, 2004). There are many benefits for having a portal in a university. First, the portal makes it...

Linked Data vocabulary designers and application developers need means to easily identify relevant vocabularies, to allow them to reuse existing vocabularies and to develop applications making use of Linked Data. We describe a system that provides information about the popularity of classes and properties based on the Billion Triple Challenge data set. The information about classes and properti...

The implementation of multiple Grid computing portals has led us to develop a methodology for Grid portal development that facilitates rapid prototyping and building of portals. Based on the NPACI Grid Portal Toolkit (GridPort) and the NPACI HotPage, all portals inherit interactive Grid services, share a single account and login environment, and share the infrastructure required to support and ...

Customizability is generally considered a desirable feature of web portals. However, if left uncontrolled, customizability may come at the price of lack of uniformity or lack of maintainability. Indeed, as the portal content and services evolve, they can break assumptions made in the definition of customized views. Also, uncontrolled customization may lead to certain content considered importan...

Collaboration and interoperability plays a very significant role in a construction supply chain. The lack of information sharing and software interoperability hampers coordination and collaboration among project participants, which are crucial to the success of a supply chain. As the Internet becomes ubiquitous and instantaneously accessible, the web services model has emerged as a promising ap...

This study examines whether behavioral and demographical factors such as previous web use experience, type of web portal used, age, and gender influence user satisfaction with web portals, and whether user satisfaction influences usage of portals. A total of 340 undergrad and graduate students participated in a survey on their usage and satisfaction with different portals. The results show that...