This paper describes metaphors and design strategies applied to conceive and develop a hand-held location aware electronic guide for museums and cities that includes a number of situated and contextual aware interaction mechanisms. In particular we describe a design approach based on the situated visiting strategies and the contextual space affordances in order to support the user involvement i...

Over the past years the concept of role in distance education has become a promising construct for analysing and facilitating collaborative processes and outcomes. Designing effective collaborative learning processes is a complex task that can be supported by existing good practices formulated as pedagogical patterns or scripts. Over the past years, the research on technology enhanced learning ...

Sentient artefacts are our everyday life objects augmented with various sensors for value added services. We have been exploiting these artefacts for perceiving user context and proving proactive context aware services while keeping their natural appearances and roles intact. From our observations of these artefacts we have identified two passive advantages besides their explicit value added fu...

Cultural transmission is essentially the idea that beliefs and values are passed from generation to generation. The question I would like to address in this paper is how does this happen? In particular, what is the mechanism? In the absence of a deep understanding of the process by which people come to have similar ideas, a variety of metaphors have been used. The purpose of this paper is to ou...

In A Philosophy of Technology: From Technical Artefacts to Sociotechnical Systems, technology is analysed from a series of different perspectives. The analysis starts by focussing on the most tangible products of technology, called technical artefacts, and then builds step-wise towards considering those artefacts within their context of use, and ultimately as embedded in encompassing sociotechn...

Artefacts are common in today's cone beam CT (CBCT). They are induced by discrepancies between the mathematical modelling and the actual physical imaging process. Since artefacts may interfere with the diagnostic process performed on CBCT data sets, every user should be aware of their presence. This article aims to discuss the most prominent artefacts identified in the scientific literature and...