Physical contact established during interaction between a human operator and a haptic device creates a coupled system with stability and performance characteristics different than its individual subsystems taken in isolation. Proper incorporation of operator dynamics in physical human-robot interaction (pHRI) conditions requires knowledge of system variables and parameters, some of which are no...

This critical review examines the effect of AAC assisted device screen layout on the ability of preschool children to access vocabulary. Specifically, this review compares the success of young children when using a speech generating device containing either a traditional grid organizational display, where vocabulary items are organized in a square grid pattern of discrete icons, or a Visual Sce...

Thirty-five consecutive patients with ventricular septal defect (VSD) associated with aortic insufficiency (AI) who underwent corrective surgery are presented. There were seven operative and three late deaths among the patients operated upon before 1968. No death, however, was encountered among the most recent 18 consecutive patients. The VSD was closed directly in 14 patients and with a Teflon...

The paper treats the semi active isolation of a single equipment, acceleration sensitive, by means of a variable elastic control device. A numerical study on a single degree of freedom (SDOF) structural model equipped with a continuously variable elastic device subjected to harmonic input is presented. The utilized control algorithm is derived by the Lyapunov method and specialized in order to ...

BACKGROUND Previous studies on variable stiffness colonoscopes showed mixed results. Different methods of activating the variable stiffness function were used and might explain part of the controversy. To determine the most efficient way of activating the variable stiffness function, this study compared 3 methods (no activation, regular activation, activation on an as-needed basis) using 1 sing...

OBJECTIVE The aim was to define the long term prognosis of isolated ventricular septal defect (VSD) with anteriorly malaligned outlet septum. DESIGN Cohort study. SETTING University hospital, tertiary medical care centre. PATIENTS Between July 1986 and June 1993, 63 patients were studied with an isolated VSD and anteriorly malaligned outlet septum (59 perimembranous; 4 muscular outlet). ...

Thirty-five consecutive patients with ventricular septal defect (VSD) associated with aortic insufficiency (AI) who underwent corrective surgery are presented. There were seven operative and three late deaths among the patients operated upon before 1968. No death, however, was encountered among the most recent 18 consecutive patients. The VSD was closed directly in 14 patients and with a Teflon...

In this paper, an in silico proof of concept a spinristor is proposed and provided; new electronic component that combines spin-filter memristor single molecule, useful for in-memory processing. It builds on the idea open-shell transition metal ion enclosed within elliptical fullerene connected to pair electrodes. The spin- electronic-polarization induced by metallic leads differential rectific...

Formation of an aneurysm in the sinus of Valsalva of the aortic root is usually due to an area of congenital weakness in its wall. This aneurysm may progressively dilate and rupture into any of the cardiac chambers or into the pericardial cavity. Though this is conventionally treated by surgery, interventional therapy using various closure devices is becoming more common. Embolization of these ...

Contractures and spasticity are two commonly occurring phenomena following neurological lesions. These require different medical management but are often difficult to separate using the current clinical methods. This commentary outlines a newly available device (the NeuroflexorTM) used to quantify the elastic, viscous and reflex components of wrist/finger stiffness. The device and algorithm use...