In this paper, design scenarios made possible by the use of an interactive illuminated floor as the basis of an audiovisual environment are presented. By interfacing a network of pressure sensitive, light-emitting tiles with a 5.1 channel speaker system and requisite audio software, many avenues for collaborative expression emerge, as do heretofore unexplored modes of multiplayer music and danc...

We refer to operators like important, crucial, should and must as deontic necessity modals. Our goal in this paper is to contribute to the understanding of the differences ∗We thank Graham Katz and Elena Herburger for discussions which have shaped our understanding of the topic and Jessica Rett, Nate Charlow, and Stephen Finlay for comments on previous versions. Any errors are of course our res...

It takes a strong electric field to ionize atoms or ions in the creation of plasmas. These fields can be generated in lightning bolts (electric discharges), neon light bulbs, at the focus of a laser, and in the path of particle beams. It is perhaps less obvious that plasma itself can also have sufficiently strong fields within it to further ionize ions, since one might expect equal amounts of p...

Test-driven development is one of the central techniques of Extreme Programming. However, the impact of test-driven development on the business value of a project has not been studied so far. We present an economic model for the return on investment when using test-driven development instead of the conventional development process. Two factors contribute to the return on investment of test-driv...

Résumé. Dans cet article, nous montrons que les performances d’un modèle prédictif dépendent généralement plus de la qualité des données et du soin apporté à leur préparation et à leur sélection, que de la technique de modélisation elle-même. Entre deux techniques, l’écart de performance est souvent négligeable en regard des incertitudes résultant de la définition de la variable à expliquer et ...