Results 21 to 30 of about 11,949,866 (380)

Finite-difference distributions for the Ginibre ensemble [PDF]

open access: yes, 2002
The Ginibre ensemble of complex random matrices is studied. The complex valued random variable of second difference of complex energy levels is defined.
Bickel P J   +16 more
core   +1 more source

Finite difference calculations of permeability in large domains in a wide porosity range. [PDF]

open access: yes, 2016
Determining effective hydraulic, thermal, mechanical and electrical properties of porous materials by means of classical physical experiments is often time-consuming and expensive.
A Yang   +26 more
core   +1 more source

A 2D Moving Mesh Finite Element Analysis of Heat Transfer in Arctic Soils

open access: yesThermo, 2023
Accurate soil heat transfer models are needed to predict and adapt to a warming arctic. A numerical model to accurately predict temperatures and thaw depths in soils, both with depth and with horizontal distance from features such as cliffs, was ...
Michelle Wilber, Getu Hailu
doaj   +1 more source

Exact Finite Difference Scheme and Nonstandard Finite Difference Scheme for Burgers and Burgers-Fisher Equations

open access: yesJournal of Applied Mathematics, 2014
We present finite difference schemes for Burgers equation and Burgers-Fisher equation. A new version of exact finite difference scheme for Burgers equation and Burgers-Fisher equation is proposed using the solitary wave solution.
Lei Zhang, Lisha Wang, Xiaohua Ding
doaj   +1 more source

Difference divisor graph of the finite group [PDF]

open access: yesInternational Journal of Research in Industrial Engineering, 2018
Let (Zn, +) be a finite group of integers modulo n and Dn a non-empty subset of Zn containing proper devisors of n. In this paper, we have introduced the difference divisor graph Diff (Zn, Dn) associated with Zn whose vertices coincide with Zn such that ...
R. V M S S Kiran Kumar, T. Chalapathi
doaj   +1 more source

Non-standard and Numerov finite difference schemes for finite difference time domain method to solve one-dimensional Schrödinger equation

open access: yesJournal of Physics: Theories and Applications, 2018
The purpose of  this paper is to show some improvements of the finite-difference time domain (FDTD) method using Numerov and non-standard finite difference (NSFD) schemes for solving the one-dimensional Schrödinger equation.
Lily Maysari Angraini, I Wayan Sudiarta
doaj   +1 more source

Finite-Difference Time-Domain Modeling of Space–Time-Modulated Metasurfaces [PDF]

open access: yesIEEE Transactions on Antennas and Propagation, 2016
A finite-difference time-domain modeling of finite-size zero thickness space–time-modulated Huygens’ metasurfaces based on generalized sheet transition conditions is proposed and numerically demonstrated.
Scott A. Stewart, T. Smy, Shulabh Gupta
semanticscholar   +1 more source

Finite logarithmic order meromorphic solutions of linear difference/differential-difference equations [PDF]

open access: yesMathematica Bohemica
Firstly we study the growth of meromorphic solutions of linear difference equation of the form A_k(z)f(z+c_k)+\cdots+A_1(z)f(z+c_1)+A_0(z)f(z)=F(z), where $A_k(z),\ldots,A_0(z)$ and $F(z)$ are meromorphic functions of finite logarithmic order, $c_i$
Abdelkader Dahmani, Benharrat Belaïdi
doaj   +1 more source

A Finite Time Analysis of Temporal Difference Learning With Linear Function Approximation [PDF]

open access: yesAnnual Conference Computational Learning Theory, 2018
Temporal difference learning (TD) is a simple iterative algorithm widely used for policy evaluation in Markov reward processes. Bhandari et al. prove finite time convergence rates for TD learning with linear function approximation.
Jalaj Bhandari   +2 more
semanticscholar   +1 more source

Real space finite difference method for conductance calculations [PDF]

open access: yes, 2004
We present a general method for calculating coherent electronic transport in quantum wires and tunnel junctions. It is based upon a real space high order finite difference representation of the single particle Hamiltonian and wave functions.
A. Levy Yeyati   +11 more
core   +4 more sources

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