Results 51 to 60 of about 1,124 (201)

A spectrally-accurate FVTD technique for complicated amplification and reconfigurable filtering EMC devices

, 2012
The consistent and computationally economical analysis of demanding amplification and filtering structures is introduced in this paper via a new spectrally-precise finite-volume time-domain algorithm.
Scott, Jonathan B., Lalas, Antonios X., Antonopoulos, Christos S., Assimonis, Stylianos D., Kantartzis, Nikolaos V.   +4 more
core   +1 more source

Optimal control for a variable-order diffusion-wave equation with a reaction term; A numerical study

Partial Differential Equations in Applied Mathematics
In this paper, optimal control for a variable-order diffusion-wave equation with a reaction term is numerically studied, where the variable-order operator is defined in the sense of Caputo proportional constant.
N.H. Sweilam, F. Megahed, S.A. Shatta, D. Baleanu   +3 more
doaj   +1 more source

Predicting Performance of Hall Effect Ion Source Using Machine Learning

Advanced Intelligent Systems, Volume 7, Issue 3, March 2025.
This study introduces HallNN, a machine learning tool for predicting Hall effect ion source performance using a neural network ensemble trained on data generated from numerical simulations. HallNN provides faster and more accurate predictions than numerical methods and traditional scaling laws, making it valuable for designing and optimizing Hall ...
Jaehong Park, Guentae Doh, Dongho Lee, Youngho Kim, Changmin Shin, Su‐Jin Shin, Young‐Chul Ghim, Sanghoo Park, Wonho Choe   +8 more
wiley   +1 more source

Overlap Algorithm for the Nonstandard FDTD Method Using Nonuniform Mesh [PDF]

, 2007
In this paper, the overlap algorithm is applied to the nonstandard finite-difference time-domain (NS-FDTD) method using a nonuniform mesh in a 2-D space. The characteristics of the overlap algorithm are numerically examined and compared with a no overlap
Taguchi, Kenji, Kanai, Yasushi, Kashiwa, Tatsuya, Ohtani, Tadao   +3 more
core   +1 more source

Convergence of a Mimetic Finite Difference Method for Static Diffusion Equation

Advances in Difference Equations, 2007
The numerical solution of partial differential equations with finite differences mimetic methods that satisfy properties of the continuum differential operators and mimic discrete versions of appropriate integral identities is more likely to produce ...
Rojas S, Castillo JE, Freites-Villegas M, Guevara-Jordan JM   +3 more
doaj   +2 more sources

Design‐for‐Benchmarking in Soft Robotics: Navigating Component‐System Dichotomy

Advanced Intelligent Systems, EarlyView.
Soft robotics faces a profound evaluation challenge: the Component‐System Dichotomy, where isolated component tests fail to predict integrated performance. This article presents a systematic survey of critical reporting gaps across actuation, sensing, and control.
Matteo Lo Preti, Muhammad Sunny Nazeer, Josh Pinskier, David Howard, Cecilia Laschi   +4 more
wiley   +1 more source

Front Propagation Through a Perforated Wall

Communications on Pure and Applied Mathematics, EarlyView.
ABSTRACT We consider a bistable reaction– diffusion equation ut=Δu+f(u)$u_t=\Delta u +f(u)$ on RN${\mathbb {R}}^N$ in the presence of an obstacle K$K$, which is a wall of infinite span with many holes. More precisely, K$K$ is a closed subset of RN${\mathbb {R}}^N$ with smooth boundary such that its projection onto the x1$x_1$‐axis is bounded and that ...
Henri Berestycki, François Hamel, Hiroshi Matano   +2 more
wiley   +1 more source

A nonstandard difference-integral method for the viscous Burgers’ equation [PDF]

, 2008
We develop a nonstandard difference-integral method based on a nonstandard finite difference method coupled with a CE–SE scheme. We use the viscous Burgers’ equation with preestablished conditions as a benchmark for testing our method.
SILVIA JEREZ GALIANO
core  

Accelerated nonstandard finite difference method for solving singularly perturbed parabolic reaction diffusion problem. [PDF]

, 2022
In this study, accelerated nonstandard finite difference method is presented for solving singularly perturbed parabolic reaction diffusion initial boundary value problems. Richardson extrapolation technique applied to improve accuracy of the solution and
Worku Tilahun, Tesfaye Aga, Alemayehu Fersha   +2 more
core  

Robust Tests of Forecast Accuracy for Factor‐Augmented Regressions With an Application to the Novel EA‐MD‐QD Dataset

Journal of Applied Econometrics, EarlyView.
ABSTRACT We present four novel tests of equal predictive accuracy and encompassing á Pitarakis (2023, 2025) for factor‐augmented regressions. Factors are estimated using cross‐section averages (CAs) of grouped series and our theoretical findings are empirically relevant: asymptotic normality, robustness to an overspecification of the number of factors,
Alessandro Morico, Ovidijus Stauskas
wiley   +1 more source