Are process nonlinearities encoded in meandering river planform morphology
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2016jf003929
Abstract: Meandering river planform evolution is driven by the interaction of local nonlinear processes and cutoff dynamics. Despite the known nonlinear dynamics governing the evolution of meandering rivers, previous attempts have found at most a weak… read more here.
Keywords: process nonlinearities; nonlinearity; river planform; river ... See more keywords
Nonlinear optoacoustic readings from diffusive media at near-infrared wavelengths.
Sign Up to like & getrecommendations! Published in 2018 at "Journal of biophotonics"
DOI: 10.1002/jbio.201600310
Abstract: Optoacoustic (photoacoustic) imaging assumes that the detected signal varies linearly with laser energy. However, nonlinear intensity responses as a function of light fluence have been suggested in optoacoustic microscopy, that is, within the first millimeter… read more here.
Keywords: diffusive media; nonlinear optoacoustic; nonlinearity; media near ... See more keywords
Sufficient condition for logarithmic nonlinearity in nonlinear evolution equations
Sign Up to like & getrecommendations! Published in 2020 at "Mathematical Methods in the Applied Sciences"
DOI: 10.1002/mma.7016
Abstract: In this paper, the author establishes a sufficient condition for logarithmic nonlinearity in nonlinear evolution equations. Lian et al. (Nonlinear Anal. 184, 2019, 239–257) proved the existence and blow‐up of solution for the hyperbolic equations… read more here.
Keywords: nonlinearity nonlinear; nonlinearity; logarithmic nonlinearity; condition logarithmic ... See more keywords
Nonnegative solutions for the fractional Laplacian involving a nonlinearity with zeros
Sign Up to like & getrecommendations! Published in 2021 at "manuscripta mathematica"
DOI: 10.1007/s00229-021-01275-w
Abstract: We study the nonlocal nonlinear problem $$\begin{aligned} \left\{ \begin{array}[c]{lll} (-\Delta )^s u = \lambda f(u) &{} \text{ in } \Omega , \\ u=0&{}\text{ on } \mathbb {R}^N{\setminus }\Omega , \quad (P_{\lambda }) \end{array} \right. \end{aligned}$$… read more here.
Keywords: fractional laplacian; lambda lambda; solutions fractional; lambda ... See more keywords
3D dynamic analysis of the soil–foundation–superstructure system considering the elastoplastic finite deformation of both the soil and the superstructure
Sign Up to like & getrecommendations! Published in 2017 at "Bulletin of Earthquake Engineering"
DOI: 10.1007/s10518-017-0280-x
Abstract: In this study, in order to investigate the effect of the nonlinearity of superstructure supported by group-pile foundation and liquefiable ground on the piles and surrounding ground soils, three-dimensional (3D) dynamic finite element analysis is… read more here.
Keywords: ground; nonlinearity; foundation; superstructure ... See more keywords
A new test for stick–slip limit cycles in dry-friction oscillators with a small nonlinearity in the friction characteristic
Sign Up to like & getrecommendations! Published in 2017 at "Meccanica"
DOI: 10.1007/s11012-017-0648-7
Abstract: Abstract We consider a dry friction oscillator on a moving belt with both the Coulomb friction and a small nonlinear addition which can model e.g. the Stribeck effect. By using the perturbation theory, we establish… read more here.
Keywords: stick slip; slip limit; dry friction; nonlinearity ... See more keywords
Nonlinear adaptive tracking control of non-minimum phase hypersonic flight vehicles with unknown input nonlinearity
Sign Up to like & getrecommendations! Published in 2017 at "Nonlinear Dynamics"
DOI: 10.1007/s11071-017-3716-6
Abstract: A nonlinear adaptive controller design method for output tracking of hypersonic flight vehicles (HFVs) subject to input nonlinearity is proposed in this paper. The parameters of the input nonlinearity are assumed to be unknown. This… read more here.
Keywords: unknown input; nonlinear adaptive; nonlinearity; control ... See more keywords
Modulational instability in oppositely doubled-doped directed couplers with a non-kerr-like nonlinear refractive-index change
Sign Up to like & getrecommendations! Published in 2019 at "Optical and Quantum Electronics"
DOI: 10.1007/s11082-019-2101-8
Abstract: We theoretically investigate modulation instability (MI) in a two-core nonlinear oppositely directed coupler with a negative-index material channel in the presence of a non-kerr-like nonlinear refractive-index change. Using linear stability analysis, we obtain an expression… read more here.
Keywords: non kerr; index; nonlinearity; like nonlinear ... See more keywords
Simple and Sawtooth Waves in a Resonance Layer with Quadratic Elastic Nonlinearity
Sign Up to like & getrecommendations! Published in 2018 at "Radiophysics and Quantum Electronics"
DOI: 10.1007/s11141-018-9857-8
Abstract: We study the excitation of simple and sawtooth discontinuous waves in a nonlinear acoustic resonator representing a plane-parallel layer located in an outer medium and irradiated by a normally incident plane-longitudinal harmonic wave. The amplitudes… read more here.
Keywords: simple sawtooth; nonlinearity; medium; waves resonance ... See more keywords
Periodic Solutions of a System of Differential Equations with Hysteresis Nonlinearity in the Presence of Eigenvalue Zero
Sign Up to like & getrecommendations! Published in 2018 at "Ukrainian Mathematical Journal"
DOI: 10.1007/s11253-018-1566-0
Abstract: We study a system of ordinary differential equations of order n containing a nonlinearity of imperfectrelay type with hysteresis and external periodic perturbation. We consider the problem of existence of solutions with periods equal to… read more here.
Keywords: system; periodic solutions; nonlinearity; solutions system ... See more keywords
Composite Effect of E/O Nonlinearity and Optical Echo on EPWM-OFDM Transmission in Radio Over Fiber Channel
Sign Up to like & getrecommendations! Published in 2017 at "Wireless Personal Communications"
DOI: 10.1007/s11277-014-2219-8
Abstract: Radio over Fiber (RoF) is a promising technology for extending broadband wireless access to indoor and outdoor dead spots. However, commonly applied intensity-modulation / direct-detection RoF transmission presents some nonlinearity and produces echo distortion. Since… read more here.
Keywords: nonlinearity; transmission; epwm; radio fiber ... See more keywords