Portals for the public administration (PA) are Internet gateways leading to a broad range of services, devoted to a great number of users. The offered services can potentially be all the ones offered by the PA offices. The final users involved are potentially all the citizens, thus ranging from young people to retired ones, to impaired ones. The benefits offered by putting PA services on the In...

Our goal is increasing the users’ value and experience and decreasing the implementation time for web portals. To achieve this goal we adopt a subject-centric perspective on information architecture. The fundament of this approach is that portals should be driven by subject-centric models of the portals’ domains. Out of these domain models, the interaction and interface design of the portals is...

Creating web-portals based on semantic representations is an active field of development these days. However, it is expensive to create high-quality semantic data, and it is difficult to create portals that satisfy a variety of user profiles. We propose a transformational method for building portals based on cheaper, light-weight ontologies. Our transformations use frequent ontological patterns...

Employee portals are utilized by many companies to improve information exchange and communication between their employees as well as to better support business processes. Assessing the benefits of employee portals has become important, owing to limited IT budgets and the need to justify investments in portals. In this paper, we propose a conceptual model for measuring the effectiveness of emplo...

This paper presents OntoWeaver-S, an ontology-based infrastructure for building knowledge portals. In particular, OntoWeaver-S is integrated with a comprehensive web service platform, IRS-II, for the publication, discovery, and execution of web services. In this way, OntoWeaver-S supports the access and provision of remote web services for knowledge portals. Moreover, it provides a set of compr...

In this paper we revisit the cells-and-portals visibility methods, originally developed for the special case of architectural interiors. We define an effectiveness measure for a cells-and-portals partition, and introduce a two-pass algorithm that computes a cells-and-portals partition. The algorithm uses a simple heuristic that creates short portals as a mean for generating an effective partiti...

This paper describes an implementation of the Message Passing Interface (MPI) on the Portals 3.0 data movement layer. Portals 3.0 provides low-level building blocks that are flexible enough to support higher-level message passing layers such as MPI very efficiently. Portals 3.0 is also designed to allow for programmable network interface cards to offload message processing from the host process...

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 ...

Research portals are websites that present information about certain research activities and their corresponding results in a structured manner. Institutions like universities, businesses, or governmental organizations use them as knowledge base to identify and communicate “who researches on what” or “where can the relevant information, people, or funds be found”. Furthermore, such portals are ...

Several governments across the world have embraced the digital revolution and continue to take advantage of the information and communication facilities offered by the Internet to offer public services. Conversely, citizens’ awareness and expectations of Internet based online-public-services have also increased in recent times. Although the numbers of the different national e-Government web por...