Cactus in four populations of saguaros (Carnegiea gigantea) that were damaged in a 1987 hailstorm were measured, and the heights of individuals in 1987 and 2003 were obtained trigonometrically. Net growth in this 16-year interval ranged from 0.15-3.00 m across the 300 saguaros measured, and averaged 1.03-1.48 m across the four sites. Average cactus height in both years, as well as net growth, d...

Analytical and numerical methods are applied to a pair of coupled nonidentical phase-only oscillators, where each is driven by the same independent third oscillator. The presence of numerous bifurcation curves defines parameter regions with 2, 4, or 6 solutions corresponding to phase locking. In all cases, only one solution is stable. Elsewhere, phase locking to the driver does not occur, but t...

stories, myths and tales can make ideas a part of popular culture. rea at religious figures have taught with parables; we use fables and fairy tales to teach our children about life; and it has been argued that even the ancient Greek myths might have been deliberate devices for organizing and transmitting information about the natural world to non-scientifically oriented people [I]. Once an ide...