A linear piston hydraulic angular-velocity-based control knee joint was designed for people with knee-extensor weakness to engage knee-flexion resistance when knee-flexion angular velocity reaches a preset threshold, such as during a stumble, but to otherwise allow free knee motion. During mechanical testing at the lowest angular-velocity threshold, the device engaged within 2 degrees knee flex...

A simple experiment of non-panic evacuation of single rootn with one exit was organized and analyzed frotn the microscopic point of view. The rule-based CA based on Floot-Field tnodel is presented to support the experiment. Sevetal ideas of decislon-tnaking allowing the individual to choose ati occupied cell are itnpletnetited to reflect observed behavior in the congestioti cluster iti front of...

The scope of this paper is the interpretation of a user’s intention via a video camera and a speech recognizer. In comparison to previous work which only takes into account gesture recognition, we demonstrate that by including speech, system comprehension increases. For the gesture recognition, the user must wear a colored glove, then we extract the velocity of the center of gravity of the hand...

In this paper, two major practical issues are studied to improve the performance of a new energy based method of achieving stable, high performance haptic interface control. The first issue is related to resetting the amount of energy accumulated in the Passivity Observer for faster operation. A heuristic method is derived and experimentally tested for the resetting and it is shown to help the ...

Measurements of electron transport, effective ionization, and attachment coefficients are reported for C2F4' In addition, measurements of the electron drift velocity and the effective ionization coefficient as a function of the density-reduced electric field E/N are reported for mixtures of C2F4 with Ar. The measured effective ionization coefficients in C2F4/Armixtures indicates a contribution ...