This paper presents an integrated fuzzy approach to recover the performance in impedance control, reducing the errors in position and force, considering uncertainties in the parameters of the manipulator model and contact surface model. This integrated strategy considers a fuzzy adaptive compensator in the outer control loop that adjusts the manipulator tip position to compensate for uncertaint...

Radiation of sound from a simplified model of a buried nozzle with bypass flow is studied. More precisely, a semi-infinite duct (the inner nozzle) is situated inside a larger semi-infinite duct. The exit plane of the larger duct either coincides with the exit plane of the smaller duct, or extends beyond it. Differences in the piece-wise subsonic mean flow velocity, density and temperature are t...

A model which describes the discharge phenomena of a two-dimensional poppe·t-type valve is developed which correlates well with experimental measurements. The flow regime is divided into two regions: an inner one where the flow can be considered as inviscid and an outer one with ·turbulent jet flow characteristics. The pressure distribution along the valve is also investigated. The results indi...

Previous reports have shown that the intrarenal infusion of adenosine results in a relatively greater fall in superficial nephron glomerular filtration rate (GFR) than whole kidney GFR. This nonuniform decrease in GFR occurred despite a concomitant increase in total renal blood flow (RBF); thus, the present study was undertaken to assess the effect of intrarenally administered adenosine on the ...

Transmural histological changes were determined morphometrically in the left ventricular free wall of 20 pigs after ligation of distal left anterior descending coronary artery for 10, 20, 40, and 120 minutes. Hemodynamics were recorded and regional blood flow distribution was measured in the ischemic zone. Coronary occlusion produced regional transmural ischemia without producing significant sy...

A high sensitivity, 7mm Very Long Baseline Array image of M\,87 is analyzed in order to estimate the jet velocity within 0.65 mas point origin. The captured a signal noise, double-ridged, counter-jet extending $\sim 1$ from nucleus. After defining conditions and requirements that justify approximate time averaged bilateral symmetry, continuous set Lorentz transformations are found map double-ri...

BACKGROUND The prevalence of exercise-induced bronchoconstriction among British children by ethnicity has not been studied. METHODS Peak expiratory flow rate (PEFR) was measured before and after an exercise challenge test using a cycle ergometer in 593 nine year olds from Scottish and inner city English schools. Logistic regression analysis was carried out to assess the association between ch...