We argue that the use of a user-centred design approach necessarily involves some form of storytelling or narrative. Given that both the potential end-users and the designers themselves often (perhaps usually) have different interests and points-of-view to present, the resultant co-constructed narrative describing the desired interactive system is inevitably the product of compromise. We descri...

Skeletal deformities of the thorax are known to produce functional disturbances of the cardiovascular system. Most of these deformities are usually benign, the only manifestation being a functional prmcordial murmur. As many of these murmurs are loud, they are often detected during a routine clinical examination for symptoms not of cardiac origin, and an erroneous diagnosis of heart disease may...

We raise two questions on Euclid’s Elements: How to explain that Propositions 16 and 27 in his first book do not follow, strictly speaking, from his postulates (or are perhaps meaningless)? and: What are the mathematical consequences of the meanings of the term eutheia which we today often prefer to consider as different? The answer to the first question is that orientability is a tacit assumpt...

In this research, we set out to investigate haptically perceived space. Large deviations with respect to physical space have already been shown to exist. Here, research on haptic space is continued by investigating straight lines constructed by touch. In four experiments, subjects were asked to produce straight lines between two reference markers that were in the horizontal plane at a fixed dis...

We introduce a class of thin combings and prove that it has a nice behaviour in free constructions. Among corollaries, we deduce the relative metabolicity of Sela’s limit groups. S. Gersten defined the property of metabolicity for finitely presented groups (or even, contractible spaces with bounded geometry in dimension 2) as an attempt of an algebraic approach of word-hyperbolic groups [8] [9]...