Results 21 to 30 of about 66,795 (159)

The linear barycentric rational quadrature method for Volterra integral equations [PDF]

open access: yes, 2014
We introduce two direct quadrature methods based on linear rational interpolation for solving general Volterra integral equations of the second kind. The first, deduced by a direct application of linear barycentric rational quadrature given in former ...
Berrut, Jean-Paul   +2 more
core   +1 more source

Gauss–Hermite interval quadrature rule

open access: yesComputers & Mathematics with Applications, 2007
Let \({\mathbf h}= (h_k)\in\mathbb{R}^n\), \(H\), \(M\), \(\varepsilon_0> 0\), \({\mathbf H}^H_n= \{{\mathbf h}\in\mathbb{R}^n\mid h_k\geq 0\), \(k=1,\dots, n\), \(\sum^n_{k=1} h_k< {\mathbf H}\}\), \({\mathbf X}_n({\mathbf h})= \{{\mathbf x}\in \mathbb{R}^n\mid -\infty< x_1- h_1\leq x_1+ h_1 0\) there exist \(\varepsilon_0> 0\) and \(M> 0\) such that ...
Milovanović, Gradimir V.   +1 more
openaire   +1 more source

Length Scales in Bayesian Automatic Adaptive Quadrature

open access: yesEPJ Web of Conferences, 2016
Two conceptual developments in the Bayesian automatic adaptive quadrature approach to the numerical solution of one-dimensional Riemann integrals [Gh. Adam, S. Adam, Springer LNCS 7125, 1–16 (2012)] are reported.
Adam Gh., Adam S.
doaj   +1 more source

Spherical Simplex-Radial Cubature Quadrature Kalman Filter

open access: yesJournal of Electrical and Computer Engineering, 2017
A spherical simplex-radial cubature quadrature Kalman filter (SSRCQKF) is proposed in order to further improve the nonlinear filtering accuracy. The Gaussian probability weighted integral of the nonlinear function is decomposed into spherical integral ...
Zhaoming Li, Wenge Yang
doaj   +1 more source

Gauss–Laguerre interval quadrature rule

open access: yesJournal of Computational and Applied Mathematics, 2005
A Gaussian interval quadrature formula with respect to the positive weight \(w\) is a quadrature formula of the form \[ \int _a^bfw\,dx\approx \sum _{k=1}^n \frac {\mu _k}{2h_k}\int _{x_k-h_k}^{x_k+h_k}fw\,dx, \] which integrates exactly all polynomials of degree less than \(2n\).
Milovanović, Gradimir V.   +1 more
openaire   +2 more sources

A note on a family of quadrature formulas and some applications [PDF]

open access: yesOpuscula Mathematica, 2008
In this paper a construction of a one-parameter family of quadrature formulas is presented. This family contains the classical quadrature formulas: trapezoidal rule, midpoint rule and two-point Gauss rule.
Bogusław Bożek   +2 more
doaj  

Application of Newton–Cotes quadrature rule for nonlinear Hammerstein integral equations [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2021
A numerical method for solving Fredholm and Volterra integral equations of the second kind is presented. The method is based on the use of  the Newton–Cotes quadrature rule and Lagrange interpolation polynomials.
A. Shahsavaran
doaj   +1 more source

Sparse Quadrature for High-Dimensional Integration with Gaussian Measure [PDF]

open access: yes, 2017
In this work we analyze the dimension-independent convergence property of an abstract sparse quadrature scheme for numerical integration of functions of high-dimensional parameters with Gaussian measure. Under certain assumptions of the exactness and the
Chen, Peng
core   +2 more sources

A Time Finite Element Method Based on the Differential Quadrature Rule and Hamilton’s Variational Principle

open access: yesApplied Sciences, 2017
An accurate and efficient Differential Quadrature Time Finite Element Method (DQTFEM) was proposed in this paper to solve structural dynamic ordinary differential equations.
Yufeng Xing, Mingbo Qin, Jing Guo
doaj   +1 more source

On computation of high frequency Hankel transforms

open access: yesAlexandria Engineering Journal, 2019
In this paper, we consider to compute high frequency Hankel transforms numerically. An asymptotic quadrature rule is derived based on the variable upper bound integrals. The scheme is verified to be effective by testing some numerical examples. Keywords:
Jizhong Gao, Ruyun Chen
doaj   +1 more source

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