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The World Wide Web plays an important role in our society—enabling broader access to information and services than was previously available. However, Website usability and accessibility are still a problem. Numerous, automated, evaluation and transformation tools are available to help Web developers build better sites for users with diverse needs. A survey(More)
Mental workload is a concept central to a range of disciplines (including cognitive psychology and ergonomics) that has given rise to various theoretical and methodological debates. As a result, researchers have used a number of techniques for measuring mental workload. Traditionally, three categories of measurement technique have been recognized:(More)
Despite rapid growth in the number of web sites, there is still a significant number of ergonomic problems which hinder web users. Many studies focus on analysing cognitive processes and difficulties experienced by web users, but very few are interested in web designers' difficulties or in comparing their respective activities. Towards this end, the two(More)
Nowadays, much research examines both the cognitive difficulties encountered by web site users and the development of ergonomic guidelines for designers. However, few studies examine designers' cognitive functioning while designing web sites. We defend the idea that determining the difficulties web site designers encounter is necessary to better support(More)
This work addresses the question of supporting Web designers in considering usability in their work in order to foster user-centered design of Web sites. With the MetroWeb tool that is described in this paper, designers can access usability guidelines contained in usability knowledge bases, and use them to design a particular Web site based on these(More)
We are looking at how new forms of document interface can be used to support new forms of scholarly discourse, and ultimately, new models of scholarly publishing. Towards this end, we have been using specially designed computer-mediated conferencing technology to realize an innovative peer review model within an academic e-journal-the Journal of Interactive(More)
This paper looks at two limitations of cognitive models of web-navigation: first, they do not account for the entire process of information search and second, they do not account for the differences in search behavior caused by aging. To address these limitations, data from an experiment in which two types of information search tasks (simple and difficult),(More)