Web portals have emerged as an important means of collaboration on the WWW, and the integration of ontologies promises to make them more accurate in how they serve users collaboration and information location requirements. However, web portals are essentially a centralised architecture resulting in difficulties supporting seamless roaming between portals and collaboration between groups support...

introduction: nowadays and with the increasing role of the worldwide web as one of the most important sources of information on the one hand, and the enhancement of its usability on the other, it is necessary for the web designers and developers to be familiar with the criteria that make a web portal usable. therefore, the present study aimed to provide knowledge about the criteria of usability...

Enterprise portals have become the backbone for the integration of a large number of different applications, content, and services (Smith, 2004). Nowadays, electronic business can hardly be imagined without the use of these portals as central entry points. At the same time, companies become more and more aware that portal projects are complex, timeand cost-consuming, with a high risk of failing...

OBJECTIVE Integration of robotic surgical technology into skull base surgery is limited due to minimum angle requirements between robotic tools (narrow funnel effect), steep angle of approach, and instrumentation size. The objectives of this study were to systematically analyze surgical approach portals using a computer model, determine optimal approaches, and assess feasibility of the derived ...

The World Wide Web represents one of the most profound developments that has accompanied the evolution of the Internet. It is truly a global library. Information on the Web is increasing exponentially, and mechanisms to extract information from it have become an engaging field of research. While search engines have been doing an admirable job in finding information, the emergence of Web portals...

Attila Kertesz, Zoltan Farkas, Peter Kacsuk, Tamas Kiss MTA SZTAKI Computer and Automation Research Institute H-1518 Budapest, P. O. Box 63, Hungary 2 Centre for Parallel Computing, University of Westminster 115 New Cavendish Street, London, W1W 6UW CoreGrid Institute on Resource Management and Scheduling CoreGrid Institute on Grid Systems, Tools and Environments {attila.kertesz, zfarkas, kacsu...

Patient portals provide patients with access to a provide-managed electronic health record (EHR). They may provide an interesting approach to increase patient empowerment. The objective of this paper is to provide a first overview of the state-of-the-art and the impact of patient portals. Based on a systematic literature search, we identified five evaluation studies on patient portals. These st...

We present a scalable and reliable framework for Semantic Portals which is an extension of our existing SEAL approach. We illustrate the instantiation of our framework by the real-world example of a heterogeneous and distributed infrastructure of Semantic Portals, viz. the portal of our institute AIFB, the OntoWeb.org portals and the KM-Vision.org portal. The approach relies on the application ...

The Portals 3.3 data movement interface was developed at Sandia National Laboratories in collaboration with the University of New Mexico over the last ten years. Portals is intended to provide the functionality necessary to scale a distributed memory parallel computing system to thousands of nodes. Previous versions of Portals ran on several large-scale machines, including a 1024-node nCUBE-2, ...