On-site earthquake early warning techniques, which issue alerts based on seismic waves measured at a single station, are promising, and have performed quite successfully during some damaging earthquakes.Conventionally, most existing techniques extract several P-wave features from the first few seconds of seismic waves after the trigger to predict t
The cyclic actions due to waves, currents and winds on offshore platforms Cashews frequently cause fatigue cracks at hot-spot locations.The remaining fatigue life of such connections depends significantly on the fatigue driving force often measured by the stress-intensity factors.This study examines the fatigue performance of tubular joints fabrica
In this study, a sliding mode surface controller (SMC) designed for a quadcopter is experimentally tested.The SMC was combined with disturbance observers in six degrees of freedom of the quadcopter to effectively reject external disturbances.While respecting stability conditions all control parameters were automatically initialized AROMATHERAPY NEC