Results 31 to 40 of about 51,014 (299)
Dendrite Refinement and Improved Mechanical Properties of SiC/TiC/Al Hybrid Nanocomposites
Advances in Materials Science and Engineering, 2022 Hybrid nano-(SiCp + TiCp)/Al composites were fabricated by liquid ultrasonic assisted semisolid stirring processing. The eutectic silicon of Al matrix changes from acicular to fine granular with addition of nanoparticles and the dendrite size of primary ...
Hui Xie, Jinze Lv
doaj +1 more source
Risk‐aware safe reinforcement learning for control of stochastic linear systems
Asian Journal of Control, EarlyView.Abstract This paper presents a risk‐aware safe reinforcement learning (RL) control design for stochastic discrete‐time linear systems. Rather than using a safety certifier to myopically intervene with the RL controller, a risk‐informed safe controller is also learned besides the RL controller, and the RL and safe controllers are combined together ...
Babak Esmaeili +2 more
wiley +1 more source
Neural Network Adaptive Attitude Control of Full-States Quad Tiltrotor UAV
AerospaceThe control stability and accuracy of quad tiltrotor UAVs is improved when encountering external disturbances during automatic flight by an active disturbance rejection control (ADRC) parameter self-tuning control strategy based on a radial basis ...
Jiong He +5 more
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Atypical Predictive Processing Is Associated With Sensory Over‐Responsivity in Autism
Autism Research, EarlyView.ABSTRACT Autism is characterized by sensory processing atypicalities including sensory over‐responsivity (SOR), a heightened negative response to sensory stimuli. Although the neural mechanisms underlying SOR are not fully understood, SOR has been associated with sensory‐limbic hyper‐reactivity during sensory stimulation.
Bar Yosef +5 more
wiley +1 more source
Dynamic characteristics analysis of quadrotor unmanned aerial vehicle
Xibei Gongye Daxue XuebaoBecause of the unstable flight state caused by the excessive vibration of the support arms of a quadrotor unmanned aerial vehicle(UAV), its finite element analysis is carried out with the Nastran, and its vibration analysis are also carried out for ...
XING Longtao +4 more
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Berichte zur Wissenschaftsgeschichte, EarlyView.Since late 2021, serious allegations have been made against physicist Erwin Schrödinger, ranging from pedophilia to serial sexual abuse. These accusations have significantly tarnished the Nobel Prize winner's public reputation. The ongoing debate has repeatedly raised the question of whether, and to what extent, these grave allegations are justified ...
Magdalena Gronau, Martin Gronau
wiley +1 more source
Photothermal bubble: Dynamics, manipulation, and applications
Droplet, EarlyView.As a versatile platform for bubble manipulation, photothermal techniques empower diverse operations: planar translation by scanning the laser spot, sustained periodic bouncing from competing thermal and hydrodynamic flows, and even guided 3D trajectories achieved by tailoring the heating configuration.
Man Hu, Feng Wang, Daosheng Deng
wiley +1 more source
Installation Effect of the Rear-Mounted Tails of a Compound Helicopter on Its Propeller Noise
AerospaceFor high-speed compound helicopters, such as the S-97 Raider, the reflection and diffraction effects of vertical/horizontal tails on pusher propeller noise are inevitable.
Tao Yang +5 more
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Научный вестник МГТУ ГА, 2023 The present paper presents a simulation model description developed for the aircraft performance estimation of the most popular electric vertical takeoff and landing aircraft (eVTOL) aerodynamic configurations with the electric (hybrid) power plant for ...
M. I. Myasnikov, I. R. Ilyin
doaj +1 more source