Results 41 to 50 of about 434,100 (202)

New types of membrane-rod and membrane-pneumatic structures and improved methods for their calculation

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2023
Objective. The purpose of this study was to create new pre-fabricated membrane-rod structures and non-linear methods for their calculation.Method. A stepwise method with an iterative numerical Euler-Cauchy procedure of the third order of accuracy was ...
A. Yu. Kim, S. V. Polnikov, M. F. Amoyan
doaj   +1 more source

Numerical investigation of ensemble methods with block iterative solvers for evolution problems

open access: yesDiscrete & Continuous Dynamical Systems - B, 2020
The ensemble method has been developed for accelerating a sequence of numerical simulations of evolution problems. Its main idea is, by manipulating the time stepping and grouping discrete problems, to make all members in the same group share a common ...
L. Ju, W. Leng, Zhu Wang, Shuai Yuan
semanticscholar   +1 more source

Non-iterative and exact method for constraining particles in a linear geometry

open access: yes, 2004
We present a practical numerical method for evaluating the Lagrange multipliers necessary for maintaining a constrained linear geometry of particles in dynamical simulations.
Allen   +12 more
core   +1 more source

Krylov Subspace Solvers and Preconditioners

open access: yesESAIM: Proceedings and Surveys, 2018
In these lecture notes an introduction to Krylov subspace solvers and preconditioners is presented. After a discretization of partial differential equations large, sparse systems of linear equations have to be solved.
Vuik C.
doaj   +1 more source

A boundary element formulation for the substation grounding design [PDF]

open access: yes, 1999
[Abstract] A Boundary Element approach for the numerical computation of substation grounding systems is presented. In this general formulation, several widespread intuitive methods (such as Average Potential Method) can be identified as the result of ...
Casteleiro, Manuel   +2 more
core   +2 more sources

Parallel multigrid method for solving inverse problems

open access: yesMethodsX, 2022
We considered in this work the linear operator equation and used the Landweber iterative method as an iterative solver. After that, we used the multigrid method as an optimization method for obtaining an approximation solution with a highly accurate and ...
H.K. Al-Mahdawi   +5 more
doaj   +1 more source

The Averaged Kaczmarz Iteration for Solving Inverse Problems

open access: yes, 2018
We introduce a new iterative regularization method for solving inverse problems that can be written as systems of linear or non-linear equations in Hilbert spaces.
Haltmeier, Markus, Li, Housen
core   +1 more source

Two New Efficient Iterative Regularization Methods for Image Restoration Problems

open access: yesAbstract and Applied Analysis, 2013
Iterative regularization methods are efficient regularization tools for image restoration problems. The IDR(s) and LSMR methods are state-of-the-arts iterative methods for solving large linear systems. Recently, they have attracted considerable attention.
Chao Zhao   +3 more
doaj   +1 more source

A proposal for an instructional methodological class on iterative numerical methods for Systems of Linear Equations

open access: yesGamification and Augmented Reality
Introduction: The methodological work aimed to enhance teachers' pedagogical preparation to optimize the teaching-learning process, focusing on improving Curriculum E of Computer Science, specifically in the Numerical Mathematics course.  Methods: An instructional methodological class was designed based on previous research conducted at the Faculty of ...
Damian Valdés Santiago   +1 more
openaire   +1 more source

OpenFOAM iterative methods efficiency analysis for linear systems solving

open access: yesТруды Института системного программирования РАН, 2018
Significant part of the computational work in numerical simulations of technical systems, physical phenomena and technological processes is solving of linear algebraic equations systems arising from the discretization of the corresponding differential or
I. K. Marchevsky, V. V. Puzikova
doaj  

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