As the rates of lifestyle diseases such as obesity, diabetes, and heart disease continue to rise, the development of effective tools that can help people adopt and sustain healthier habits is becoming ever more important. Mobile computing holds great promise for providing effective support for helping people manage their health in everyday life. Yet, for this promise to be realized, mobile well...

This paper presents StoreAnt, a virtual repository tool containing information about collaborative systems evaluation methods. It supports researchers and practitioners in finding and comparing information about methods, and identifying methods that comply to specific criteria (e.g. how the data is collected). The system is functional but has not yet been deployed publicly. Hopefully it will pr...

The aim of this paper is to develop algorithms to measure motion features by investigating concepts which are commonly used to describe movement characteristics in both research studies and everyday life: impulsivity and smoothness. We also aim to implement such definitions in our developing environment VisNet and finally test if they can effectively measure impulsivity and smoothness in the sa...

Within the field of HCI there are a number of preferred approaches towards design. As within other disciplines, these approaches are often irreconcilable. We explore the possibilities of using ethics as a way to bridge the gap and re-establish the design focus of doing good towards the user. This is the idea of ‘justice’ to aid improved design. According to Aristotle, justice is classed as a vi...

Accepted for publication 26 March 1991 Abstract The oesophageal acid clearance time was evaluated in 10 healthy volunteers of 'small' boluses of 0 5 and 1 ml and 'minute' boluses of 0-05 and 0*1 ml 0.1 N HCI, as well as 0-1 and 1 ml 0*01 and 0.001 N HCI. Swallow rate was normalised at q 60 seconds. For 0.1 ml 0.1 N HCI, acid clearance time was also measured for swallow intervals of q 30 and 120...

This reports research on users’ attitudes towards and use of GSM devices and discusses the implications these have for the future evolution of hand-held devices. It argues that current usage patterns suggest that there i s unlikely to be a widespread convergence of information accessing devices and person to person communication devices. It also argues that the latter devices and their associat...

IS continuance is important for IS providers to increase both their revenues and profits, and to achieve success. With the penetration of SNS into people’ lives, SNS has attracted the attentions of IS researchers and become a hot topic. This study develops a model to explore the factors determining individuals’ continuous intention and use of SNS. Based on 221 useful questionnaires, the researc...

Designing virtual personal assistants that are able to engage users in an interaction have been a challenge for HCI researchers for the past 20 years. In this work we investigated how a set of vocal characteristics known as “conversational style” could play role in engaging users in an interaction with a virtual agent. We also examined whether the similarity attraction principle influences how ...