the coordinate transformation allows the exact calculation of some electrode configurations. in this paper the prolate spherical coordination transformation is used to calculate the field of a hyperboloiderod against plan electrode. the exact field is caculated using two new parameters: 1) electrodes spacing and 2) the radius of curvature of the tip of the rod electrode. the partial discharge i...

Abstract This paper presents the design of a geometric trajectory tracking controller for an underactuated multi-body system describing cooperative task two quadrotor UAVs (unmanned aerial vehicles) carrying and transporting rigid bar, which is attached to quadrotors via inflexible elastic cables. The elasticity cables together with techniques singular perturbation allows reduction in model tha...

PURPOSE To study electroretinographic responses of infant rats with a history of exposure to high-ambient oxygen. METHODS Electroretinographic responses to a range of full-field stimuli were recorded from 13-day-old (n = 8) and 18-day-old (n = 10) rats with a history of intermittent exposure to 80% oxygen and age-matched controls. The a-waves were fitted with a model of rod cell sensitivity a...

STUDY DESIGN It is a multicenter, controlled case study review of a big scale of pedicle-screw procedures from January 2000 to June 2010. The outcomes were compared to those with no implant failure. PURPOSE The purpose of this study was to review retrospectively the outcome of 100 patients with implant failure in comparison to 100 control-patients, and to study the causes of failure and its p...