Results 31 to 40 of about 4,382,513 (303)

HARMONIC INTERPOLATING WAVELETS IN NEUMANN BOUNDARY VALUE PROBLEM IN A CIRCLE

open access: yesUral Mathematical Journal, 2019
The Neumann boundary value problem (BVP) in a unit circle is discussed. For the solution of the Neumann BVP, we built a method employing series representation of given \(2 \pi\)-periodic continuous boundary function by interpolating wavelets consisting ...
Dmitry A. Yamkovoi
doaj   +1 more source

On the Use of Neumann Decomposition for Crop Classification Using Multi-Temporal RADARSAT-2 Polarimetric SAR Data

open access: yesRemote Sensing, 2019
In previous studies, parameters derived from polarimetric target decompositions have proven as very effective features for crop classification with single/multi-temporal polarimetric synthetic aperture radar (PolSAR) data.
Qinghua Xie   +6 more
doaj   +1 more source

Experimental simulations of shock textures in BCC iron: implications for iron meteorites

open access: yesProgress in Earth and Planetary Science, 2022
Neumann band in iron meteorites, which is deformation twins in kamacite (Fe–Ni alloy), has been known to be a characteristic texture indicating ancient collisions on parent bodies of meteorites.
Eiji Ohtani   +2 more
doaj   +1 more source

Thermoacoustic tomography with variable sound speed [PDF]

open access: yes, 2009
We study the mathematical model of thermoacoustic tomography in media with a variable speed for a fixed time interval, greater than the diameter of the domain.
Agranovsky M   +13 more
core   +4 more sources

Uncertainty, entropy and decoherence of the damped harmonic oscillator in the Lindblad theory of open quantum systems [PDF]

open access: yes, 1999
In the framework of the Lindblad theory for open quantum systems, expressions for the density operator, von Neumann entropy and effective temperature of the damped harmonic oscillator are obtained.
Isar, A.
core   +3 more sources

Recurrent neural networks made of magnetic tunnel junctions

open access: yesAIP Advances, 2020
Artificial intelligence based on artificial neural networks, which are originally inspired by the biological architectures of the human brain, has mostly been realized using software but executed on conventional von Neumann computers, where the so-called
Qi Zheng   +4 more
doaj   +1 more source

Massive MIMO Detection Algorithms Based on MMSE-SIC, ZF-MIC, Neumann Series Expansion, Gauss-Seidel, and Jacobi Method

open access: yesJournal of Physics: Conference Series, 2020
The massive multiple-input multiple-output (MIMO) systems is an important technology in the fifth generation of mobile communication. To get the result of a MIMO system require some algorithm to approximate the precise result as the computation ...
Zixuan Wang
semanticscholar   +1 more source

Coupling impedance of a PEC angular strip in a vacuum pipe

open access: yesIET Microwaves, Antennas & Propagation, 2021
This study deals with the evaluation of the longitudinal and transverse coupling impedance of a charge travelling in a drift tube with a perfectly electric conductive angular strip. The problem is formulated in the particle frame as dual series equations,
Dario Assante   +3 more
doaj   +1 more source

Conformal string operators and evolution of skewed parton distributions [PDF]

open access: yes, 1999
We have investigated skewed parton distributions in coordinate space. We found that their evolution can be described in a simple manner in terms of non-local, conformal operators introduced by Balitsky and Braun.
Balitskii   +48 more
core   +2 more sources

On the Regular Integral Solutions of a Generalized Bessel Differential Equation

open access: yesAdvances in Mathematical Physics, 2018
The original Bessel differential equation that describes, among many others, cylindrical acoustic or vortical waves, is a particular case of zero degree of the generalized Bessel differential equation that describes coupled acoustic-vortical waves.
L. M. B. C. Campos   +3 more
doaj   +1 more source

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