scholarly journals Stellar scintillations in a spaceborne occultation experiment for atmospheric irregularities with the variable anisotropy

2015 ◽  
Vol 28 (11) ◽  
Keyword(s):  
Variable Anisotropy

scholarly journals Variable Anisotropic Hardy Spaces with Variable Exponents

2021 ◽  
Vol 9 (1) ◽  
pp. 65-89
Author(s):  
Zhenzhen Yang ◽  
Yajuan Yang ◽  
Jiawei Sun ◽  
Baode Li
Keyword(s):  
Hardy Spaces ◽  
Variable Exponent ◽  
Atomic Decomposition ◽  
Integral Operators ◽  
Moment Condition ◽  
Variable Exponents ◽  
Hölder Continuous ◽  
Multi Level ◽  
The Moment ◽  
Variable Anisotropy

Abstract Let p(·) : ℝ n → (0, ∞] be a variable exponent function satisfying the globally log-Hölder continuous and let Θ be a continuous multi-level ellipsoid cover of ℝ n introduced by Dekel et al. [12]. In this article, we introduce highly geometric Hardy spaces Hp (·)(Θ) via the radial grand maximal function and then obtain its atomic decomposition, which generalizes that of Hardy spaces Hp (Θ) on ℝ n with pointwise variable anisotropy of Dekel et al. [16] and variable anisotropic Hardy spaces of Liu et al. [24]. As an application, we establish the boundedness of variable anisotropic singular integral operators from Hp (·)(Θ) to Lp (·)(ℝ n ) in general and from Hp (·)(Θ) to itself under the moment condition, which generalizes the previous work of Bownik et al. [6] on Hp (Θ).

scholarly journals Generation of 3D Spatially Variable Anisotropy for Groundwater Flow Simulations

Ground Water ◽  
2015 ◽  
Vol 53 (6) ◽  
pp. 955-958 ◽  
Author(s):  
Andrea Borghi ◽  
Philippe Renard ◽  
Gabriel Courrioux
Keyword(s):  
Groundwater Flow ◽  
Flow Simulations ◽  
Variable Anisotropy

scholarly journals Variable anisotropy of small-scale stratospheric irregularities retrieved from stellar scintillation measurements by GOMOS/Envisat

2014 ◽  
Vol 7 (6) ◽  
pp. 1861-1872 ◽  
Author(s):  
V. Kan ◽  
V. F. Sofieva ◽  
F. Dalaudier
Keyword(s):  
Satellite Observations ◽  
Small Scale ◽  
Anisotropy Coefficient ◽  
Atmospheric Parameters ◽  
Air Density ◽  
Ozone Monitoring ◽  
D Model ◽  
Vertical Scales ◽  
Stellar Scintillation ◽  
Variable Anisotropy

Abstract. In this paper, we consider possibilities for studying the anisotropy of small-scale air density irregularities using satellite observations of bi-chromatic stellar scintillations during tangential occultations. Estimation of the anisotropy coefficient (the ratio of the characteristic horizontal to vertical scales) and other atmospheric parameters is based on the comparison of simulated/theoretical and experimental auto-spectra and coherency spectra of scintillation. Our analyses exploit a 3-D model of the spectrum of atmospheric inhomogeneities, which consists of anisotropic and isotropic components. For the anisotropic component, a spectral model with variable anisotropy is used. Using stellar scintillation measurements by GOMOS (Global Ozone Monitoring by Occultation of Stars) fast photometers, estimates of the anisotropy coefficient are obtained for atmospheric irregularities with vertical scales of 8–55 m at altitudes of 43–30 km. It is shown that the anisotropy increases from about 10 to 50 with increasing vertical scales.

scholarly journals Variable anisotropy of ionic conduction in lithium nitride: Effect of duplex-charge transfer

2009 ◽  
Vol 80 (2) ◽  
Author(s):  
Ippei Kishida ◽  
Fumiyasu Oba ◽  
Yukinori Koyama ◽  
Akihide Kuwabara ◽  
Isao Tanaka
Keyword(s):  
Charge Transfer ◽  
Ionic Conduction ◽  
Lithium Nitride ◽  
Variable Anisotropy

scholarly journals A scalar three-dimensional spectral model with variable anisotropy

1997 ◽  
Vol 102 (D16) ◽  
pp. 19449-19459 ◽  
Author(s):  
Francis Dalaudier ◽  
Alexandre S. Gurvich
Keyword(s):  
Three Dimensional ◽  
Spectral Model ◽  
Variable Anisotropy

Engineering the magnetic properties of amorphous (Fe80Co20)80B20 with multilayers of variable anisotropy direction

2007 ◽  
Vol 90 (16) ◽  
pp. 162501 ◽  
Author(s):  
Miguel González-Guerrero ◽  
José Luis Prieto ◽  
David Ciudad ◽  
Pedro Sánchez ◽  
Claudio Aroca
Keyword(s):  
Magnetic Properties ◽  
Anisotropy Direction ◽  
Variable Anisotropy

scholarly journals Effect of nonuniform perpendicular anisotropy in ferromagnetic resonance spectra in magnetic nanorings

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
E. Saavedra ◽  
A. Riveros ◽  
J. L. Palma
Keyword(s):  
Ferromagnetic Resonance ◽  
High Frequency ◽  
Lower Energy ◽  
Spatial Localization ◽  
Dynamic Susceptibility ◽  
Perpendicular Anisotropy ◽  
Resonant Frequencies ◽  
Micromagnetic Simulations ◽  
Resonance Modes ◽  
Variable Anisotropy

AbstractThe high frequency dynamic behaviors of magnetic nanorings with variable anisotropy along their radius have been studied using micromagnetic simulations. The dynamic susceptibility spectrum and spatial localization of the ferromagnetic resonance modes are investigated by varying anisotropy gradients in nanorings of 200 nm of external radius, with different internal radii. Both the resonant frequencies and the number of peaks depend on the lower energy magnetization configuration which in turn is a function of anisotropy gradients. Besides, it is shown that the effects of the anisotropy gradient are relevant even for the narrowest ring of 10 nm wide. The idea of controlling frequencies by modifying the anisotropy gradients of the system suggests the possibility of using these nanostructures in potential magnetic controllable frequency devices.

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