Purpose – To present the state of the arts application of semantic web technologies in web portals and corresponding achievable improvements for identifying the potential improvement made by semantic web technology. Design/methodology/approach – An evaluation scheme is proposed to investigate various web portals that make use of semantic web technologies in order to identify their strengths and...

Web-portal application development needs to be improved by comprehensive testing processes and practices. Building the initial knowledge by evaluating and improving the state of the art in testing will steer the future for better tested portal solutions. In this paper, we present the results of an industrial case study that helped us 1) to understand the testing practices and tools in use and 2...

BACKGROUND Biodiversity data is characterized by its cross-disciplinary character, the extremely broad range of data types and structures, and the plethora of different data sources providing resources for the same piece of information in a heterogeneous way. Since the web inception two decades ago, there are multiple initiatives to connect, aggregate, share, and publish biodiversity data, and ...

Without doubt one of the most important factors that contributed to the wide acceptance and popularity of Web portals is the potential for users to access a broad spectrum of information from a single access point, the Web portal itself. A Web portal, in such a way, aggregates information from multiple sources and makes that information available to various users. Regardless of whether the offe...

Filtergraph is a web application being developed by the Vanderbilt Initiative in Data-intensive Astrophysics (VIDA) to flexibly handle a large variety of astronomy datasets. While current datasets at Vanderbilt are being used to search for eclipsing binaries and extrasolar planets, this system can be easily reconfigured for a wide variety of data sources. The user loads a flat-file dataset into...

Semantic Web applications in the humanities that visualize knowledge are still few and far between. The Visual Contextualization of Digital Content (VICODI) project brought together Semantic Web technologies with the concepts of contextualization and visualization of knowledge, an approach which we term visual contextualization. The goal was to enhance users’ understanding of digital content in...

This paper describes an approach to the design and implementation of ontology driven dynamic web sites combining ontologies and wiki technologies. The core of the architectural solution proposed is completely based on ontologies rather than on more traditional forms of persistent data storage facilities, such as relational databases. This approach provides a flexible support to the design and i...

Grids are built by communities who need a shared cyberinfrastructure to make progress on the critical problems they are currently confronting. A Grid portal is a conventional Web portal that sits on top of a rich collection of web services that allow a community of users access to shared data and application resources without exposing them to the details of Grid computing. In this chapter we de...

Web-based portals are a convenient and effective mechanism for integrating information from a wide variety of sources, including Web services. However, since availability and performance of Web services cannot be guaranteed, availability of information and overall performance of a portal can vary. In this paper, we describe a framework for developing an autonomic self-healing portal system that...

Grid portals are the most popular means for delivering user interfaces to Grids. Grid portals build upon the familiar Web portal model to offer virtual communities of users a single point of access to computational resources. The GridSphere Portal Framework is a Portlet JSR compliant portlet container that offers a set of base classes and tools for developing Web applications. The Grid Portlets...