On High Dimensional Schrödinger Equation with Quasi-Periodic Potentials
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Dynamical and Control Systems"
DOI: 10.1007/s10883-016-9347-2
Abstract: In this paper, we consider the high dimensional Schrödinger equation −d2ydt2+u(t)y=Ey,y∈ℝn,$ -\frac {d^{2}y}{dt^{2}} + u(t)y= Ey, y\in \mathbb {R}^{n}, $ where u(t) is a real analytic quasi-periodic symmetric matrix, E=diag(λ12,…,λn2)$E= \text {diag}({\lambda _{1}^{2}}, \ldots ,… read more here.
Keywords: high dimensional; dinger equation; dimensional schr; quasi periodic ... See more keywords
Real Analytic Quasi-Periodic Solutions with More Diophantine Frequencies for Perturbed KdV Equations
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DOI: 10.1007/s10884-016-9529-3
Abstract: In this paper, we consider the perturbed KdV equation with Fourier multiplier $$\begin{aligned} u_{t} =- u_{xxx} + \big (M_{\xi }u+u^3 \big )_{x},\quad u(t,x+2\pi )=u(t,x),\quad \int _0^{2\pi }u(t,x)dx=0, \end{aligned}$$ut=-uxxx+(Mξu+u3)x,u(t,x+2π)=u(t,x),∫02πu(t,x)dx=0,with analytic data of size $$\varepsilon $$ε. We… read more here.
Keywords: real analytic; periodic solutions; perturbed kdv; quasi periodic ... See more keywords
A Numerical Investigation of the Pinning Phenomenon in Quasi-Periodic Frenkel Kontrova Model Under an External Force
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DOI: 10.1007/s10955-018-2132-8
Abstract: We perform a numerical study on Frenkel–Kontrova (FK) models in quasi-periodic media subject to a constant external force. The quasi-periodic FK models appear in several physical problems such as deposition, spin waves in 1-D, planar… read more here.
Keywords: phenomenon; external force; frenkel kontrova; force ... See more keywords
Failure surface of quasi-periodic masonry by means of Statistically Equivalent Periodic Unit Cell approach
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DOI: 10.1007/s11012-017-0771-5
Abstract: In this paper a homogenization procedure for the estimation of the failure surface of a quasi-periodic masonry, based on a mean stresses approach through the analysis of the Statistically Equivalent Periodic Unit Cell (SEPUC), is… read more here.
Keywords: failure surface; failure; quasi periodic; periodic unit ... See more keywords
A unified block-based sparse domain solution for quasi-periodic de-noising from different genres of images with iterative filtering
Sign Up to like & getrecommendations! Published in 2019 at "Multimedia Tools and Applications"
DOI: 10.1007/s11042-019-7502-y
Abstract: Images, corresponding to various crucial imagery applications often experience stern problem of being degraded by different modalities of periodic/quasi-periodic noises. Though few periodic denoising algorithms address well for some specific application only, most of them… read more here.
Keywords: image; block; solution; unified block ... See more keywords
Dynamical transitions of the quasi-periodic plasma model
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DOI: 10.1007/s11071-019-04792-2
Abstract: This study examines the stability and transitions of the quasi-periodic plasma perturbation model from the perspective of the dynamical transition. By analyzing the principle of exchange of stability, it is shown that this model undergoes… read more here.
Keywords: periodic plasma; dynamical transitions; model; quasi periodic ... See more keywords
Large-Scale Disturbances in the Lower and Middle Ionosphere Accompanying Its Modification by the Sura Heater
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DOI: 10.1007/s11141-019-09986-7
Abstract: We briefly describe the results of the first (undedicated) experiments on studying large-scale (about 1000 km) aperiodic and quasi-periodic disturbances in the lower and middle ionosphere. The main results of modern experiments are listed. Multi-instrument… read more here.
Keywords: large scale; disturbances lower; heater; middle ionosphere ... See more keywords
Modelling Quasi-Periodic Pulsations in Solar and Stellar Flares
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DOI: 10.1007/s11214-018-0478-5
Abstract: Solar flare emission is detected in all EM bands and variations in flux density of solar energetic particles. Often the EM radiation generated in solar and stellar flares shows a pronounced oscillatory pattern, with characteristic… read more here.
Keywords: modelling quasi; pulsations solar; periodic pulsations; stellar flares ... See more keywords
Study of wave signatures observed in thermospheric airglow imaging over the dip equatorial region
Sign Up to like & getrecommendations! Published in 2018 at "Advances in Space Research"
DOI: 10.1016/j.asr.2018.06.039
Abstract: Abstract The observational data on OI 630 nm thermospheric nightglow from the Indian dip equatorial station, Tirunelveli (8.7°N, 77.8°E geographic, 1.6°N dip latitude) obtained between January 2013 and January 2015 using an All-Sky Airglow Imager (ASAI)… read more here.
Keywords: study wave; periodic waves; wave signatures; dip equatorial ... See more keywords
Quasi-periodic pulsations in hard X-rays of partially occulted solar flares
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DOI: 10.1016/j.asr.2019.06.006
Abstract: Abstract We investigated solar flares partially occulted by the solar disk observed by the Yohkoh satellite. We found that about 30–40% of them show quasi-periodic pulsations (QPPs) in hard X-rays (HXR). A lack of usually… read more here.
Keywords: occulted solar; partially occulted; quasi periodic; periodic pulsations ... See more keywords
Narrow stop band microwave filters by using hybrid generalized quasi-periodic photonic crystals
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DOI: 10.1016/j.cjph.2017.10.008
Abstract: Abstract Using the transfer matrix method approach (TMM), the microwave transmission spectra in hybrid quasi-periodic multilayer photonic structures are studied. These structures are formed by concatenating several quasi-periodic sequences such as the generalized Cantor (GC… read more here.
Keywords: narrow stop; quasi; stop band; band microwave ... See more keywords