Ruth de Villiers

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Usability evaluation of e-learning applications is a maturing area, which addresses interfaces, usability and interaction from human-computer interaction (HCI) and pedagogy and learning from education. The selection of usability evaluation methods (UEMs) to determine usability problems is influenced by time, cost, efficiency, effectiveness, and ease of(More)
Virtual reality is a rapidly growing technology which utilises the ever-increasing power of computers to simulate real-world and imaginary environments and situations with a high degree of realism and interactiveness. Safety in the South African mining industry is a vital issue. On average, one worker dies every working day, and about 16 are injured in(More)
This paper, a meta-research study, focuses on design-based research (DBR), the educational technology variant of design science research (DSR). DBR is applied to develop and evaluate an m-learning environment, Mobile Learning Research (<i>m-LR</i>) delivered by mobile handheld devices. The emergence and evolution of DSR in the information systems discipline(More)
The Internet, World Wide Web (WWW) and e-learning are contributing to new forms of teaching and learning. Such environments should be designed and evaluated in effective ways, considering both usabilityand pedagogical issues. The selection of usability evaluation methods (UEMs) is influenced by the cost of a methods and its effectiveness in addressing(More)
Digital Doorways are rugged computer terminals that offer unassisted learning and peer-assisted learning of basic computer skills, as well as a range of computing activities from entertainment, through education, to independent research. Sites are located in impoverished areas of South Africa at schools, colleges and public community facilities. Usage is(More)
Despite the accepted importance of User Experience (UX) as a concept related to and yet distinct from usability, there is still some ambiguity about the relationship between UX and usability. This paper aims to investigate the role of usability in contributing to a good UX in the rapidly-growing domain of e-commerce websites, where user experience is of(More)
The usability of any tool or system has to be viewed in terms of the context in which it is used, and its appropriateness to that context. According to the ISO definition of usability, the context of use includes the users, tasks, equipment (hardware, software and materials), and the physical and social environments in which a product is used. Context(More)
The teaching and learning of a complex section in Theoretical Computer Science 1 in a distanceeducation context at the University of South Africa (UNISA) has been enhanced by a supplementary e-learning application called Relations, which interactively teaches mathematical skills in a cognitive domain. It has tutorial and practice functionality in a classic(More)