Results 11 to 20 of about 298,833 (265)
ELECTROMAGNETIC MEDIA WITH NO DISPERSION EQUATION [PDF]
Progress In Electromagnetics Research B, 2013 It has been known through some examples that parameters of an electromagnetic medium can be so defined that there is no dispersion equation (Fresnel equation) to restrict the choice of the wave vector of a plane wave in such a medium, i.e., that the dispersion equation is satisfied identically for any wave vector.
I.V., Lindell, A., Favaro
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Human-Machine Communication Journal, 2023 In this theoretical paper, we delineate two fundamental paradigms in how scholars conceptualize the nature of machines in human-machine communication (HMC).
Margot J. van der Goot, Katrin Etzrodt
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Restrictions on wave equations for passive media [PDF]
The Journal of the Acoustical Society of America, 2017 Most derivations of acoustic wave equations involve ensuring that causality is satisfied. Here, the consequences of also requiring that the medium should be passive are explored. This is a stricter criterion than causality for a linear system and implies that there are restrictions on the relaxation modulus and its first few derivatives.
Holm, Sverre, Holm, Martin Blomhoff
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A VTI anisotropic media inversion method based on the exact reflection coefficient equation
Frontiers in Physics, 2022 Anisotropy is widespread in the Earth’s crust, and VTI (vertical axis symmetry transverse isotropy) anisotropy is common due to stratigraphic pressure. Disregarding anisotropy leads to inaccurate inversion results in VTI media.
Fan Wu +11 more
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Semiclassical Approach to the Nonlocal Kinetic Model of Metal Vapor Active Media
Mathematics, 2021 A semiclassical approach based on the WKB–Maslov method is developed for the kinetic ionization equation in dense plasma with approximations characteristic of metal vapor active media excited by a contracted discharge.
Alexander V. Shapovalov +1 more
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Nonlinear Poisson Equation for Heterogeneous Media [PDF]
Biophysical Journal, 2012 The Poisson equation is a widely accepted model for electrostatic analysis. However, the Poisson equation is derived based on electric polarizations in a linear, isotropic, and homogeneous dielectric medium. This article introduces a nonlinear Poisson equation to take into consideration of hyperpolarization effects due to intensive charges and possible
Hu, Langhua, Wei, Guo-Wei
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A discrete scheme of the fluid motion equation based on the pore-scale SPH method
AIP Advances, 2021 To study the phenomenon of convection diffusion and solute migration in porous media, the smoothed particle hydrodynamics method is used to solve the N–S equation describing pore water flow and the linear homogeneous second-order differential equation ...
Gaosheng Yang +3 more
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ANALISIS PENGARUH PLATFORM SOSIAL MEDIA TERHADAP PENYEBARAN INFORMASI BENCANA
JSiI (Jurnal Sistem Informasi), 2021 Abstrak- Sosial media menjadi platform yang sangat berperan dalam menyebarkan informasi, berita, dan memberikan informasi bencana secara cepat dan tepat. Banyak informasi berharga yang dapat diperoleh dalam platform ini.
Rona Nisa Sofia Amriza +1 more
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Frontiers in Earth Science, 2023 Previous studies demonstrated that seismic attenuation and anisotropy can significantly affect the kinematic and dynamic characteristics of wavefields.
Yabing Zhang, Tongjun Chen
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A PRIORI ESTIMATE FOR AN EQUATION WITH FRACTIONAL DERIVATIVES WITH DIFFERENT ORIGINS [PDF]
Vestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2019 We consider an ordinary differential equation of fractional order with the composition of leftand right-sided fractional derivatives, and with variable potential. The considered equation is a model equation of motion in fractal media.
L. M. Eneeva
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