Economics often borrows ideas from the sciences, yet unlike physics or chemistry, no country has ever run a controlled, pure economic experiment on a national scale. A pure experiment requires ...

Abstract: Although the literature on control of overhead crane systems is extensive and relatively mature, there is still a need to develop strategies that can simultaneously handle factors such as ...

Abstract: Joint stiffness control is essential for safe and compliant human–robot interaction in rehabilitation exoskeletons. Variable stiffness actuators (VSAs), with controllable physical stiffness, ...

On January 3, Nicolás Maduro was detained in Venezuela following a U.S.-led operation that deployed two specialized aircraft – the F-22 and the F-36. The mission was executed at extraordinary speed, ...