purpose the aim of this study was to investigat the offensive efficiency of the professional handball players forming the front and rear lines. methods our investigation was carried out on four matches (final, semi-finals and classifying match) at the 19th male handball world championship “tunisia 2005”. finalist teams were tunisia, france, croatia, and spain. matches were recorded using 5 digi...

Most of the micro/nano manipulation mechanisms and systems are commonly based on flexure-based monolithic structures, and are generally driven by piezoelectric actuators. In the presented work, experimental system identification, 1-DOF trajectory tracking with feed-forward control, and hysteresis compensation are investigated. An experimental research facility with laser interferometry-based se...

The extreme precision requirements in semiconductor manufacturing drive the need for an active vibration isolation system in a laser pattern generator. Optimizing the controller would not only improve isolation performance, but could also reduce the cost of ownership by extending lifetime of consumables and stretch service intervals. The optimization has been performed and evaluated in a model ...

purpose : the aim of this study was to investigate the effect of misalignment (tilt & decentration) of iols in cataract surgery using liu-brennan optical eye model in a simulation. methods : a phantom with the real eye parameters –liu-brennan model– and tecnis z9000 iol were used for simulation. results : results showed that with 0.4 mm decentration and more the modulation transfer function (mt...

Abstract When machining a complex freeform part, using non-spherical tool could significantly improve the efficiency, as one can adaptively adjust posture to maximize its contact area with part surface. However, since adjusting requires changing orientation, five-axis machine is needed, which extremely expensive compared conventional three-axis tool. Moreover, for surface high curvature variati...