Results 31 to 40 of about 49,746 (313)
Nonlinear Lamb Wave Micro-Crack Direction Identification in Plates with Mixed-Frequency Technique
Applied Sciences, 2020 This paper investigates the direction identification of micro-cracks with nonlinear components generated by Lamb wave with frequency-mixing technique. Three-dimensional finite element simulations were carried out to investigate the interaction mechanism ...
Liqiang Guan +3 more
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Analysis and Reduction of Nonlinear Effects in Optical Fiber Frequency Transfer
Applied Sciences, 2023 Nonlinear effects in optical fiber frequency transfer have a significant impact on the precision of frequency transfer. We investigate the main nonlinear effects, including the Brillouin scattering and the Raman scattering, in optical fiber frequency ...
Jing Gao +10 more
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Scattering matrix theory for nonlinear transport [PDF]
Physical Review B, 1998 We report a scattering matrix theory for dynamic and nonlinear transport in coherent mesoscopic conductors. In general this theory allows predictions of low frequency linear dynamic conductance, as well as weakly nonlinear DC conductance. It satisfies the conditions of gauge invariance and electric current conservation, and can be put into a form ...
Wang, J, Ma, ZS, Guo, H
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Nonlinear Iterative Hard Thresholding for Inverse Scattering [PDF]
SIAM Journal on Imaging Sciences, 2020 We consider the inverse scattering problem for sparse scatterers. An image reconstruction algorithm is proposed that is based on a nonlinear generalization of iterative hard thresholding. The convergence and error of the method was analyzed by means of coherence estimates and compared to numerical simulations.
Anna C. Gilbert +2 more
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Symbolic Computation of Polynomial Conserved Densities, Generalized Symmetries, and Recursion Operators for Nonlinear Differential-Difference Equations [PDF]
, 2004 Algorithms for the symbolic computation of polynomial conserved densities, fluxes, generalized symmetries, and recursion operators for systems of nonlinear differential-difference equations are presented. In the algorithms we use discrete versions of the
Jan A. S +15 more
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Integration of the Matrix Nonlinear Schr¨odinger Equation with a Source
Известия Иркутского государственного университета: Серия "Математика", 2021 This paper is concerned with studying the matrix nonlinear Schr¨odinger equation with a self-consistent source. The source consists of the combination of the eigenfunctions of the corresponding spectral problem for the matrix Zakharov-Shabat system which
G.U. Urazboev +2 more
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Mechanism of wave breaking from a vacuum point in the defocusing nonlinear Schrödinger equation
, 2014 We study the wave breaking mechanism for the weakly dispersive defocusing nonlinear Schrödinger equation with a constant phase dark initial datum that contains a vacuum point at the origin.
Moro, Antonio, A. Moro, Trillo, Stefano
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A local defect resonance for linear and nonlinear ultrasonic thermography [PDF]
, 2014 An efficient wave-defect interaction is the key to a high thermal response of flaws in ultrasonic thermography. To selectively enhance defect vibrations a concept of local defect resonance is developed and applied to ultrasonic activation of defects ...
Solodov, I., Rahammer, M., Busse, G.
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CONFORMAL SCATTERING FOR A NONLINEAR WAVE EQUATION [PDF]
Journal of Hyperbolic Differential Equations, 2012 We establish a geometric scattering theory for a conformally invariant nonlinear wave equation on an asymptotically simple space-time. The scattering operator is defined via some trace operators at null infinity, and the proof is decomposed into three steps.
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Nonsquare Spectral Factorization for Nonlinear Control Systems [PDF]
, 2005 This paper considers nonsquare spectral factorization of nonlinear input affine state space systems in continuous time. More specifically, we obtain a parametrization of nonsquare spectral factors in terms of invariant Lagrangian submanifolds and ...
Schaft, Arjan J. van der +4 more
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