Sand vipers of the genus Cerastes are specialized semi-fossorial snakes that launch predatory strikes at rodents and lizards while partially buried in the soft sand of the Saharan desert. This study attempted to document which environmental stimuli are used by these snakes as a trigger for the ambush behavior. Denervating the olfactory and vomeronasal organs produced no changes in prey capture ...

Focusing on the large maneuver penetration of hypersonic glide vehicle with multiple constraints and uncertain disturbance, a robust integrated guidance control law, which can achieve snake-shape maneuver, is designed. A acceleration command, in framework sine function, determined by altitude, target declination line sight missile-target distance, discussed. The law includes terminal constraint...

In response to health care worker influenza vaccination rates that are below desired targets, strategies designed to stimulate vaccination have been proposed, including the use of declination statements for those refusing vaccination. The impact of these statements has not been thoroughly investigated and may be affected by their specific language and context. This review examines the available...

In two experiments involving a total of 83 participants, the effect of vertical angular optical compression on the perceived distance and size of a target on the ground was investigated. Replicating an earlier report (Wallach & O'Leary, 1982), reducing the apparent angular declination below the horizon produced apparent object width increases (by 33 %), consistent with the perception of a great...