Meanings that Roman authors gave to nisus (NYsus), a word chiefly used in poetry, ranged from the pedestrian (a step or tread) to the celestial (the course of the stars). Cicero, Horace, Vergil, and others used nisus to convey striving, endeavor, ascent, flight, and the pain of giving birth.1,2 In this issue of Neurology, a new feature, Nisus, steps forth, to link neurology and neurologists wit...

A cell can move and reproduce, but it usually can't do both simultaneously. As Makagiansar et al. report on page 155, the pattern of phosphorylation on a membrane proteoglycan helps determine whether cells grow or go. The phosphory-lation differences direct the molecule to distinct parts of the cell membrane. Even cancer cells have to slow down before they can divide, as do normal progenitor ce...

In this paper we exploit a volunteer-based paradigm for archeological aims. In particular, we present PetroAdvisor, a system supporting several fundamental activities to digitally preserve petroglyph sites. The system exploits a rewarding strategy to stimulate people participation to the project, so that those entering useful information gain free archeological data, tips on excursions and tour...

We look at Donald Knuth's concept of \Literate Programming," investigating exactly what it is and how it is used to assist conventional programmers. We then ask what lessons we can learn from this idea and if it is possible to apply them to Forth. We look at the alterations needed to the system and/or Forth to allow us to take advantage of this system. Indeed do we obtain all of the advantages ...