there has been an increasing concern about inactive drivers who would easily lead to road accidents and fatalities once return to driving. this study investigated the re-usability of traffic signs for inactive drivers with consideration of driver factors and cognitive sign features. fifty-seven hong kong chinese, who possessed a full driving license but had not driven for an extended period, co...

There has been an increasing concern about inactive drivers who would easily lead to road accidents and fatalities once return to driving. This study investigated the re-usability of traffic signs for inactive drivers with consideration of driver factors and cognitive sign features. Fifty-seven Hong Kong Chinese, who possessed a full driving license but had not driven for an extended period, co...

In this paper the author analyses the grid computing paradigm and attempts to show how the established principles of usability engineering, interaction design and other user-centred design methodologies can be applied to this paradigm to “re-factor” it so that it addresses usability concerns. Usability issues are illustrated with examples from the Globus ToolkitTM ([1]).

Interoperability among heterogeneous systems can be reached by adopting and combining at least two strategies: one interface-oriented and the other model-oriented. The first one refers to the idea of defining well-known interfaces that systems should expose. The second one refers to the idea of having standard, semantically-rich data model shared by various systems. The SCORM standard supports ...

Usability engineering, described rather simplistically, is the process by which usability is ensured for an interactive application, at all phases in the development process. These phases include user task analysis, user class analysis, design of the user interaction, rapid prototyping, user-centered evaluation, and iterative re-design based on evaluation results. Usability engineering includes...

This paper focuses on the usability of optimisation models to support the re-routing of air traffic flows in Europe. It discusses different modelling approaches and proposes three integer programming models, with different levels of detail, aimed at re-routing air traffic flows. The models are tested on a set of test data based on the actual traffic crossing the whole French upper airspace. The...