George Buchanan

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Mobile internet technologies, such as WAP, are important for pervasive, anytime, anywhere computing. Although much progress has been made in terms of technological innovation, many of mobile internet systems are difficult to use, lack flexibility and robustness. They give a poor user experience. Evaluation and theoretical analysis of usability combined with(More)
Soon many people will retrieve information from the Web using handheld, palmsized or even smaller computers. Although these computers have dramatically increased in sophistication, their display size is – and will remain – much smaller than their conventional, desktop counterparts. Currently, browsers for these devices present web pages without taking(More)
Context in mobile tourist information systems is typically captured as the current location of the user. Few systems consider the user’s interests or wider context of the sights. This paper explores ideas of how to model, observe, evaluate, and exploit a richer notion of context in this application area. We discuss the influence of such a richer context(More)
Phrase browsing techniques use phrases extracted automatically from a large information collection as a basis for browsing and accessing it. This paper describes a case study that uses an automatically constructed phrase hierarchy to facilitate browsing of an ordinary large Web site. Phrases are extracted from the full text using a novel combination of(More)
The <i>StoryBank</i> project is examining technologies and practices to allow digitally impoverished communities to take part in the user-generated content revolution. The approach involves combining mobile phones to create audio-visual stories and a touch screen display situated in a community meeting place. This paper discusses the design, evaluation and(More)
Small handheld devices—mobile phones, Pocket PCs etc.—are increasingly being used to access the web. Search engines are the most used web services and are an important factor of user support. Search engine providers have begun to offer their services on the small screen. This paper presents a detailed evaluation of the how easy to use such services are in(More)
hence of what they can do in those libraries, is encapsulated in their “mental models” of those libraries. In this article, we present a focused case study of users’ mental models of traditional and digital libraries based on observations and interviews with eight participants. It was found that a poor understanding of access restrictions led to risk-averse(More)
Collaborative reading, or co-reading as we call it, is ubiquitous; it occurs, for instance, in classrooms, book-clubs, and in less coordinated ways through mass media. While individual digital reading has been the subject of much investigation, research into co-reading is scarce. We report a two-phase field study of group reading to identify an initial set(More)
If digital libraries are to achieve their full potential, they need to be usable and used – by people for whom information retrieval is not generally the main goal. In this paper, we outline various views of ‘usability’ and how they apply specifically to digital libraries. There are great challenges to integrating user perspectives with technical(More)