Results 221 to 230 of about 32,005 (324)

Uncertainty Quantification for Nonlinear Vibration of Supercritical Drive Shaft With a Dry Friction Damper

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The supercritical drive shaft is becoming increasingly popular in helicopter transmission system. Dry friction dampers are specially employed to ensure the supercritical shafts crossing the critical speed safely. Due to design tolerances, manufacturing errors and time‐varying factors, the parameters of the damper are inherently uncertain ...
Liyao Song   +4 more
wiley   +1 more source

Launch Uncertainty Analysis Under Barrel Erosion Using Experiments and Random Matrix Theory

open access: yesInternational Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT The effects of barrel erosion on artillery firing performance have long been a subject of concern, but its effect on launch uncertainty has yet to be investigated. This article explores the influence of barrel erosion on the interior ballistic mechanical properties and launch disturbances.
Chengyuan Guo   +5 more
wiley   +1 more source

Internal and External Sources of Nonprofit Innovativeness: A Configurational Approach

open access: yesNonprofit Management and Leadership, EarlyView.
ABSTRACT Using a configurational approach, this research explores how the complex interrelationships among four organizational factors—board size, board involvement, centralization, and government funding—influence organizational innovation. Based on survey and archival data from 44 U.S.
Jiawei Sophia Fu   +2 more
wiley   +1 more source

Optimal Adaptive Reinforcement Learning Control for a Convection‐Reaction Distributed Parameter System

open access: yesOptimal Control Applications and Methods, EarlyView.
Optimal adaptive reinforcement learning control using an actor‐critic architecture. The controller learns optimal control policies online from data measured along the trajectories of a plug flow system ABSTRACT This article is devoted to optimal adaptive control for a distributed parameter convection‐reaction system by reinforcement learning (RL ...
Abdellaziz Binid, Ilyasse Aksikas
wiley   +1 more source

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