This study explored the effect of porosity and installation angle, thickness (dimension) and second layer of permeable obstacles on density current control and trapping in the laboratory. For this purpose, an insoluble suspended polymer and two types of groove and cavity obstacles made from plexiglass sheets were selected. The experiments were conducted with two different concentrations, five d...

Abstract Obstacle avoidance for Dynamic Movement Primitives (DMPs) is still a challenging problem. In our previous work, we proposed framework obstacle based on superquadric potential functions to represent volumes. this extend work include the velocity of system in definition potential. Our formulations guarantee smoother behavior with respect state-of-the-art point-like methods. Moreover, new...

nanotechnology has been shown to have promising roles in the development of various industries including the agricultural sector. the primary purpose of this study was to investigate the researchers’ attitude and the obstacle hampering the development of nanotechnology in the agricultural sector of iran. the population of this study consisted of researchers in national research centers/institut...

Multi-static radars exploiting the ultrawide-band (UWB) technology represent a promising solution to improve the safety of rail crossing surveillance areas in case of entrapped vehicles. In particular, by taking advantage of the large bandwidth, location and volume information about the obstacles can be obtained. To this purpose, we propose a hybrid approach combining the multi-static radar and...

r . This paper investigates how a car-like mobile robot handles unexpected static obstacles while following a n optimal path planned by the global path planner. 'Ib find an optimal solution of the problem, the obstacle avoidance problem is formulated as a decision theoretic approach. The optimal decision rule we seek is to minimize the Bayes risk by trading off between deliberative man ver and ...

A dynamic computer simulator was developed to study planetary rover mobility. The simulator was validated for step-obstacle negotiation by comparing simulation results with a quasi-static analysis of a rockerbogie suspension. In addition, sample rover wheels were constructed and experiments were carried out on a single-wheel testbed to help validate the simulator. It is concluded that to fully ...

[Purpose] This study evaluated the changes in balance ability and obstacle gait after lumbar stabilization exercise and Nintendo Wii(TM) Sports in elderly at risk for falls. [Subjects and Methods] Twenty-four elderly women with at risk for falls were randomly divided into the control, lumbar stabilization exercise, and Nintendo Wii Sports groups. Static balance was measured by the Berg Balance ...