Results 11 to 20 of about 400,952 (287)

On Contraction of Three-Dimensional Multiple Shear Mechanism Model for Evaluation of Large Scale Liquefaction Using High Performance Computing

open access: yesGeosciences, 2019
For more reliable evaluation of liquefaction, an analysis model of higher fidelity should be used even though it requires more numerical computation.
Wataru Hotta   +2 more
doaj   +1 more source

Oracle computations in parallel numerical linear algebra

open access: yesTheoretical Computer Science, 1994
Using a new notion of reducibility, the authors investigate the behaviour of several known reductions among important problems in linear algebra. The main concern is the relative parallel-time complexity of certain problems within the class NC. It is shown that, within the computational model considered, many known reduction algorithms do not extend ...
B. CODENOTTI, LEONCINI, Mauro, G. RESTA
openaire   +3 more sources

Development of Efficient and Accurate Parallel Computation Algorithm Using Moving Overset Grids on Background Multi-Domains for Complex Two-Phase Flows

open access: yesApplied Sciences, 2018
The goal of this study involves developing an efficient and accurate parallel computation method for two-phase flow problems including complex moving foreign bodies.
Minho Ha   +5 more
doaj   +1 more source

Numerical Solution of Fractional Order Anomalous Subdiffusion Problems Using Radial Kernels and Transform

open access: yesJournal of Mathematics, 2021
By coupling of radial kernels and localized Laplace transform, a numerical scheme for the approximation of time fractional anomalous subdiffusion problems is presented.
Muhammad Taufiq, Marjan Uddin
doaj   +1 more source

On Numerical methods for determination of Earth gravity field model using mass satellite gravity gradiometry data

open access: yesGeodesy and Geodynamics, 2012
On the basis of Space-Wise Least Square method, three numerical methods including Cholesky decomposition, pre-conditioned conjugate gradient and Open Multi-Processing parallel algorithm are applied into the determination of gravity field with satellite ...
Zhu Guangbin   +4 more
doaj   +1 more source

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

Numerical simulation of 2D electrodynamic problems with unstructured triangular meshes [PDF]

open access: yesКомпьютерная оптика, 2019
We present a generalization of standard leap-frog plus Yee mesh approach for Cauchy problem in electrodynamics simulations on unstructured triangulated mesh.
Daniil Fadeev
doaj   +1 more source

Strict lower bounds with separation of sources of error in non-overlapping domain decomposition methods [PDF]

open access: yes, 2016
This article deals with the computation of guaranteed lower bounds of the error in the framework of finite element (FE) and domain decomposition (DD) methods.
Gosselet, Pierre   +2 more
core   +3 more sources

A hierarchical time-splitting approach for solving finite-time optimal control problems [PDF]

open access: yes, 2013
We present a hierarchical computation approach for solving finite-time optimal control problems using operator splitting methods. The first split is performed over the time index and leads to as many subproblems as the length of the prediction horizon ...
Keviczky, Tamás   +2 more
core   +2 more sources

Octree Optimized Micrometric Fibrous Microstructure Generation for Domain Reconstruction and Flow Simulation

open access: yesEntropy, 2021
Over recent decades, tremendous advances in the field of scalable numerical tools and mesh immersion techniques have been achieved to improve numerical efficiency while preserving a good quality of the obtained results.
Nesrine Aissa   +5 more
doaj   +1 more source

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