Results 51 to 60 of about 17,217 (243)

Numerical considerations in spectral multidomain methods for BiGlobal instability analysis of open cavity configurations [PDF]

, 2008
A novel approach for the solution of the viscous incompresible and/or compressible BiGlobal eigenvalue problems (EVP) in complex open cavity domains is discussed.
Theofilis, Vassilios, Valero Sánchez, Eusebio, Vicente Buendia, Javier de   +2 more
core   +2 more sources

Milestones in the Development of Iterative Solution Methods

Journal of Electrical and Computer Engineering, 2010
Iterative solution methods to solve linear systems of equations were originally formulated as basic iteration methods of defect-correction type, commonly referred to as Richardson's iteration method.
Owe Axelsson
doaj   +1 more source

Modified Variational Iteration Algorithm-II: Convergence and Applications to Diffusion Models

Complexity, 2020
Variational iteration method has been extensively employed to deal with linear and nonlinear differential equations of integer and fractional order. The key property of the technique is its ability and flexibility to investigate linear and nonlinear ...
Hijaz Ahmad, Tufail A. Khan, Predrag S. Stanimirović, Yu-Ming Chu, Imtiaz Ahmad   +4 more
doaj   +1 more source

Domain decomposition preconditioners for the spectral collocation method [PDF]

, 1988
Several block iteration preconditioners are proposed and analyzed for the solution of elliptic problems by spectral collocation methods in a region partitioned into several rectangles.
Quarteroni, Alfio, Sacchilandriani, Giovanni   +1 more
core   +2 more sources

Numerical treatment of linear Volterra integro differential equations using variational iteration algorithm with collocation

Partial Differential Equations in Applied Mathematics
To numerically solve the linear Volterra integro-differential equation, this study employs fourth-kind Chebyshev polynomials and the variational iteration algorithm with collocation, which is a combination of the variational iteration strategy and ...
Ikechukwu Jackson Otaide, Matthew Olanrewaju Oluwayemi   +1 more
doaj   +1 more source

Contemporary continuum QCD approaches to excited hadrons [PDF]

, 2016
Amongst the bound states produced by the strong interaction, radially excited meson and nucleon states offer an important phenomenological window into the long-range behavior of the coupling constant in Quantum Chromodynamics.
El-Bennich, Bruno, Rojas, Eduardo
core   +3 more sources

Fast matrix inversion methods based on Chebyshev and Newton iterations for zero forcing precoding in massive MIMO systems

EURASIP Journal on Wireless Communications and Networking, 2020
In massive MIMO (mMIMO) systems, large matrix inversion is a challenging problem due to the huge volume of users and antennas. Neumann series (NS) and successive over relaxation (SOR) are two typical methods that solve such a problem in linear precoding.
Sherief Hashima, Osamu Muta
doaj   +1 more source

Criterion for polynomial solutions to a class of linear differential equation of second order [PDF]

, 2006
We consider the differential equations y''=\lambda_0(x)y'+s_0(x)y, where \lambda_0(x), s_0(x) are C^{\infty}-functions. We prove (i) if the differential equation, has a polynomial solution of degree n >0, then \delta_n=\lambda_n s_{n-1}-\lambda_{n-1}s_n ...
Al-Salam W A, Barakat T, Barakat T, Bayrak O, Chihara T S, Ciftci H, Ciftci H, Erdélyi A, Fernández M F, Grünbaum F A, Hakan Ciftci, Littlejohn L L, Nasser Saad, Richard L Hall, Saad N, Turbiner A   +15 more
core   +1 more source

Rocket landing guidance based on second-order Picard-Chebyshev-Newton type algorithm

Xibei Gongye Daxue Xuebao
This paper proposes a rocket substage vertical landing guidance method based on the second-order Picard-Chebyshev-Newton type algorithm. Firstly, the continuous-time dynamic equation is discretized based on the natural second-order Picard iteration ...
TANG Jingyuan, GOU Yongjie, MA Yangyang, PAN Binfeng   +3 more
doaj   +1 more source

Numerical Analysis of Modeling Based on Improved Elman Neural Network

The Scientific World Journal, 2014
A modeling based on the improved Elman neural network (IENN) is proposed to analyze the nonlinear circuits with the memory effect. The hidden layer neurons are activated by a group of Chebyshev orthogonal basis functions instead of sigmoid functions in ...
Shao Jie, Wang Li, Zhao WeiSong, Zhong YaQin, Reza Malekian   +4 more
doaj   +1 more source