Linda S. Powers National Center for the Design of Molecular Function, Utah State University Research Foundation, and Dept. of Electrical and Computer Engineering, Utah State University, Logan, UT 84322-4155 Thomas D. Wilkerson Dept. of Physics and Center for Atmospheric and Space Science, Utah State University, and Space Dynamics Laboratory, Utah State University Research Foundation, Logan, UT ...

Abrasive waterjet machining (AWJM) is one of the modern machining process for difficult to cut materials. It is an environment friendly and relatively inexpensive process with reasonably high material removal rate. In all the machining processes the quality of the work piece is depends on various design parameters. The process parameters which mainly affect the quality of cutting in AWJM are Hy...

The role of dynamic depth cues in distance estimation was investigated in the Mongolian gerbil. Animals were trained to jump randomly varied distances on a jumping stand under both binocular and monocular conditions. Videotape analysis revealed that prior to jumping, the gerbils executed a series of vertical head movements, the amplitude and velocity of which were related to the gap distance an...

In this work, a robust stand-off alpha detection method using the secondary effects of alpha radiation has been sought. Alpha particles ionise the surrounding atmosphere as they travel. Fluorescence photons produced as a consequence of this can be used to detect the source of the alpha emissions. This paper details experiments carried out to detect this fluorescence, with the focus on photons i...

Laser ablation of a Near Earth Object (NEO) on a collision course with Earth produces a cloud of ejecta which exerts a thrust on the NEO, deflecting it from its original trajectory. The DE-STAR system provides thrust by illuminating an Earth-targeting asteroid or comet from afar with a stand-off system consisting of a large phased-array laser in Earth orbit. A much smaller version of the same s...