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Invisible Design is a technique for generating insights and ideas with workshop participants in the early stages of concept development. It involves the creation of ambiguous films in which characters discuss a technology that is not directly shown. The technique builds on previous work in HCI on scenarios, persona, theatre, film and ambiguity. The(More)
The introduction of tabletop interfaces has given rise to the need for the development of secure and usable authentication techniques that are appropriate for the co-located collaborative settings for which they have been designed. Most commonly, user authentication is based on <i>something you know</i>, but this is a particular problem for tabletop(More)
In this paper, we describe our experiences in the design, implementation and deployment of a wireless sensor network in a petroleum facility. A heterogeneous architecture is devised using Commercial Off-the-Shelf equipment and hardware interface is designed to setup the proposed prototype in a petroleum facility. Various performance parameters such as(More)
The present work relates to WINTeR, an open access, multiuser experimental facility, currently under development, to support implementation and evaluation of wireless sensor networks for industrial applications in radio-harsh environments. A brief review of existing testbeds is provided and the unique requirements of WINTeR are defined. The resulting WINTeR(More)
Panopticon is a video surrogate system that displays multiple sub-sequences in parallel to present a rapid overview of the entire sequence to the user. A novel, precisely animated arrangement slides thumbnails to provide a consistent spatiotemporal layout while allowing any sub-sequence of the original video to be watched without interruption. Furthermore,(More)
Graphical authentication systems typically claim to be more usable than PIN or password-based systems, but these claims often follow limited, single-stage paradigm testing on a young, student population. We present a more demanding test paradigm in which multiple codes are learned and tested over a three-week period. We use this paradigm with two user(More)
— Wireless networked control systems have begun to gain acceptance during the last decade, largely due to the increased flexibility and lower costs they promise to provide. The pace of application has been held back, however, by the reluctance of industry to make the accommodations necessary to allow wireless paths to be incorporated in process control(More)
Saving energy in residential and commercial buildings is of great interest due to diminishing resources. Heating ventilation and air conditioning systems, and electric lighting are responsible for a significant share of energy usage, which makes it desirable to optimise their operations while maintaining user comfort. Such optimisation requires accurate(More)
Few clinically effective approaches reduce CNS-white matter injury. After early in-vivo white matter infarct, NFκB-driven pro-inflammatory signals can amplify a relatively small amount of vascular damage, resulting in progressive endothelial dysfunction to create a severe ischemic lesion. This process can be minimized by 15-deoxy-Δ(12,14)-prostaglandin J2(More)