In a Service Oriented Architecture (SOA), the hierarchical complexity of Web Services (WS) and their interactions with the underlying Application Server (AS) create new challenges in providing a realistic estimate of WS performance and reliability. The current approaches often treat the entire WS environment as a black-box. Thus, the sensitivity…

Research on cognitive modeling of information search and Web navigation emphasizes the importance of "information scent" (the relevance of semantic cues such as link labels and headings to a reader's goal; Pirolli & Card, 1999). This article shows that not only semantic but also structural knowledge is involved in navigating the Web…

Considers the problem of improving the performance of Web access by proposing a reconstruction of the internal link structure of a Web site to match quality of the pages with popularity of the pages. Provides a set of simple algorithms for local reorganization of a Web site, which results in improving users' access to quality pages in an easy and…

A methodological framework for the delivery of knowledge, performance, and learning (KPL) systems is presented. The role of the KPL system is currently taken by learning management systems or learning and content management systems, and many of these systems facilitate the technical aspects of learning objects. However, they are still rooted in…