EPMcreate is a creativity technique for requirements elicitation based on a 16-step process. These steps suggest focusing on requirements related to every combination of two different target users or viewpoints. A series of experiments confirmed its feasibility; its applicability, both as individual and group technique; and its greater effectiveness than brainstorming. However, analysts involve...

The minimal model of spontaneously broken leptonic colour and discrete quarklepton symmetry predicts that charged leptons have the same masses as their partner charge +2/3 quarks up to small radiative corrections. By invoking a different pattern of symmetry breaking, a similar model can be constructed with the structural feature that charged leptons have to be lighter than their partner quarks ...

In this issue, Miller et al. (2007) show that evolution makes repeated use of the same genes to produce light pigmentation in animals as divergent as stickleback fish and humans. This study indicates that analyzing parallel evolution at the genetic level could help to answer a number of outstanding questions in evolutionary genetics.

This paper reviews the advantages of substituting die-cast copper for aluminum in the motor rotor. This advance in motor technology has been long sought by the motor industry but short die life due to the high melting point of copper frustrated attempts to manufacture by pressure die casting. The nickel-base alloy hot die technology developed to solve the manufacturing problem is briefly review...

Sisyphus was born to Aeolus (the Greek god of the winds) and his wife Enarete (the progenitor of Greeks). According to Homer, Sisyphus was the wisest and craftiest of men. However, he was condemned by the Zeus (the master of Olympus) because he revealed Olympian wrongdoings. Eventually, Hades (the Greek god of the Dead) punished him with the eternal task of rolling a rock up a mountain, which, ...