Results 261 to 270 of about 131,913 (332)
Soft magnetic materials (SMMs), characterized by their low coercivity and high magnetic permeability, are widely used in motors, transformers, and sensors due to their excellent magnetic properties. With the advancement of industry, there is an urgent need to develop SMMs with higher saturation magnetic flux density, lower coercivity, higher ...
Yichuan Tang+9 more
wiley +1 more source
Giant increase of diffusion by small rise of friction. [PDF]
Marchenko IG+4 more
europepmc +1 more source
In conventional theories, electron‐phonon relaxation time τe‐p ${\tau }_{e\mbox{-}p}$—the average interval between two consecutive electron‐phonon collisions—is assumed to be independent of electron density. In this study, we establish a new relationship of τe−p=C∗·T−1·n−1/3 ${\tau }_{e-p}={C}^{\ast }\mathit{\cdot }{T}^{-1}\mathit{\cdot }{n}^{-1/3 ...
Ziru Wang+6 more
wiley +1 more source
Microelectromechanical System Resonant Devices: A Guide for Design, Modeling and Testing. [PDF]
Viola C+5 more
europepmc +1 more source
ABSTRACT We study a class of models for nonlinear acoustics, including the well‐known Westervelt and Kuznetsov equations, as well as a model of Rasmussen that can be seen as a thermodynamically consistent modification of the latter. Using linearization, energy estimates, and fixed‐point arguments, we establish the existence and uniqueness of solutions ...
Herbert Egger, Marvin Fritz
wiley +1 more source
Invariant solutions, lie symmetry analysis, bifurcations and nonlinear dynamics of the Kraenkel-Manna-Merle system with and without damping effect. [PDF]
Aldwoah K+5 more
europepmc +1 more source
ABSTRACT This paper shows that long‐term stability and blowing‐up solutions for a nonlinear wave equation with a nonlocal damping of Choi and MacCamy type and a nonlocal dispersion can occur. The method of proof of general decay relies on a suitable Lyapunov functional.
Mokhtar Kirane+2 more
wiley +1 more source
Intelligent event trigger based sliding mode control in a marine current turbine with superconducting magnetic energy storage. [PDF]
Mohanty A+6 more
europepmc +1 more source
Design of a Tracking Controller Based on Machine Learning
ABSTRACT Tracking control of multibody systems is a challenging task requiring detailed modeling and control expertise. Especially in the case of closed‐loop mechanisms, inverse kinematics as part of the controller may become a game stopper due to the extensive calculations required for solving nonlinear equations and inverting complicated functions ...
Dieter Bestle, Sanam Hajipour
wiley +1 more source