Results 31 to 40 of about 3,430 (271)

Rational Transformations for Evaluating Singular Integrals by the Gauss Quadrature Rule

open access: yesMathematics, 2020
In this work we introduce new rational transformations which are available for numerical evaluation of weakly singular integrals and Cauchy principal value integrals.
Beong In Yun
doaj   +1 more source

Further convergence results for two quadrature rules for Cauchy type principal value integrals [PDF]

open access: yes, 1982
summary:New convergence and rate-of-convergence results are established for two well-known quadrature rules for the numerical evaluation of Cauchy type principal value integrals along a finite interval, namely the Gauss quadrature rule and a similar ...
Ioakimidis, Nikolaos I.
core   +1 more source

Analysis of Vertical Dynamic Cross Interaction between Adjacent Footings for Railway Tracks through Soil [PDF]

open access: yesMATEC Web of Conferences, 2019
An efficient semi-analytical method is presented for the vertical analysis of adjacent railway tracks considering the dynamic cross interaction (DCI) effect through the semi-infinite soil medium.
WANG Jue
doaj   +1 more source

The First Negative Moment of Skew-t and Generalized Student's t-Distributions in the Principal Value Sense

open access: yesJournal of Applied Mathematics, 2013
The (Cauchy) principal value is a method for assigning values to certain improper integrals which would otherwise be undefined. Using the principal value sense, this study derives an explicit expression of the first negative moment of skew-t and ...
Chien-Yu Peng
doaj   +1 more source

Structural, Electronic, Elastic, and Optical Characteristics of AgZF3 (Z = Sb and Bi) Fluoro-Perovskites: Using a Computational Approach for Energy Generation

open access: yesMolecules, 2023
This research is being conducted to learn more about various compounds and their potential uses in various fields such as renewable energy, electrical conductivity, the study of optoelectronic properties, the use of light-absorbing materials in ...
Fekhra Hedhili   +8 more
doaj   +1 more source

Gauss type quadrature rules for Cauchy principal value integrals [PDF]

open access: yes, 1979
Two quadrature rules for the approximate evaluation of Cauchy principal value integrals, with nodes at the zeros of appropriate orthogonal polynomials, are discussed.
D. F. Paget, David Elliott
core   +1 more source

A sinc quadrature subroutine for Cauchy principal value integrals [PDF]

open access: yes, 1999
A subroutine is presented for the evaluation of Cauchy principal value integrals. Based on a truncated sum of a Sinc function series, with the function evaluated at shifted Sinc points, the subroutine returns an approximation to the integral together ...
P Keast   +3 more
core   +1 more source

Fast and robust motion averaging via angle constraints of multi‐view range scans

open access: yesThe Journal of Engineering, 2021
The motion averaging problem arises when recovering the motions for a set of scans in three‐dimensional (3D) reconstruction. Motion averaging is taken as an optimisation problem, whose solution can be obtained via matrix decomposition in principal ...
Xin Zhang   +3 more
doaj   +1 more source

A Green’s function-based approach to the concentration tensor fields in arbitrary elastic microstructures

open access: yesFrontiers in Materials, 2023
Computational homogenization based on FEM models is the gold standard when it comes to homogenization over a representative volume element (RVE), of so-called complex material microstructures, i.e., such which cannot be satisfactorily represented by an ...
Nabor Jiménez Segura   +3 more
doaj   +1 more source

Gauss-Kronrod integration rules for Cauchy principal value integrals [PDF]

open access: yes, 1983
Kronrod extensions to two classes of Gauss and Lobatto integration rules for the evaluation of Cauchy principal value integrals are derived. Since in one frequently occurring case, the Kronrod extension involves evaluating the derivative of the integrand,
Philip Rabinowitz
core   +1 more source

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