An intelligent guide stick for the blind was developed. It consists of an ultrasound displacement sensor, two DC motors, and a micro-controller. The total weight is 4.0kg, and the width and the height of the guide stick are 24cm and 85cm, respectively. Computer simulations were performed in order to find the traces of the guide stick at three different paths using an in-house Visual C software....

The authors describe the stick utilization of Veirs modified as modelling intracanalicular facilitating canaliculo suture lachrymal and avoiding its estenose. The technique consists in the stick introduction of Veirs modified in the lumen canalicular by the lacrimal point, in direction to the lachrymal sack. To follow the distal terminations and near of canaliculo hurt are identified and the la...

This paper addresses issues of mechanical emulation of sti walls and stick-slip friction with a 6-DOF magnetically levitated joystick. In the case of sti wall emulation, it is shown that the PD control implementation commonly used severely limits achievable wall damping and sti ness. It is also shown that the perceived surface sti ness can be increased without loss of stability by applying a br...

OBJECTIVES Hurling is Ireland's national sport, played with a stick and ball; injury to the hand is common. A decrease in the proportion of head injury among emergency department (ED) presentations for hurling-related injury has coincided with voluntary use of helmet and face protection since 2003. A similar decrease in proportions has not occurred in hand injury. We aim to quantify hurling-rel...

This article focuses on developing a novel trans-scale precision positioning stage based on the stick-slip effect. The stick-slip effect is introduced and the rigid kinematics model of the stick-slip driving is established. The forward and return displacement equations of each step of the stick-slip driving are deduced. The relationship of return displacement and the acceleration produced by fr...