Vivid auroras lit up skies across North America and Europe as a severe G4 geomagnetic storm, one of the strongest this solar ...
The Steens Mountain Rapid Reversal - A Shocking 15.5 Million Year Old Event 5 million years ago. This southeastern Oregon ...
Abstract: As applications and tasks of robotic manipulators become more diverse and complicated, the desired motions of the robots also become more sophisticated and complicated. In spite of this ...