Results 11 to 20 of about 4,841 (303)

An integral‐collocation‐based fictitious‐domain technique for solving elliptic problems [PDF]

open access: yesCommunications in Numerical Methods in Engineering, 2007
AbstractThis paper presents a new fictitious‐domain technique for numerically solving elliptic second‐order partial differential equations (PDEs) in complex geometries. The proposed technique is based on the use of integral‐collocation schemes and Chebyshev polynomials.
Mai-Duy, Nam   +2 more
openaire   +4 more sources

Assessment of SMOS RFI Mitigation by means of a Triple collocation technique

open access: yesIGARSS 2019 - 2019 IEEE International Geoscience and Remote Sensing Symposium, 2019
2019 IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2019), 28 July - 2 August 2019, Yokohama ...
Roger Oliva   +2 more
openaire   +3 more sources

A numerical technique based on Lucas polynomials together with standard and Chebyshev-Lobatto collocation points for solving functional integro-differential equations involving variable delays

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
In this paper, a new numerical matrix-collocation technique is consideredto solve functional integro-differential equations involving variable delaysunder the initial conditions.
Sevin Gümgüm   +3 more
doaj   +2 more sources

Structural and statistical properties of the collocation technique for error characterization [PDF]

open access: yesNonlinear Processes in Geophysics, 2012
Abstract. The validation of geophysical data sets (e.g. derived from models, exploration techniques or remote sensing) presents a formidable challenge as all products are inherently different and subject to errors. The collocation technique permits the retrieval of the error variances of different data sources without the need to specify one data set ...
Zwieback, Simon   +3 more
openaire   +5 more sources

Determination of an Extremal in Two-Dimensional Variational Problems Based on the RBF Collocation Method

open access: yesEntropy, 2022
This paper introduces a direct method derived from the global radial basis function (RBF) interpolation over arbitrary collocation nodes occurring in variational problems involving functionals that depend on functions of a number of independent variables.
Ahmad Golbabai   +2 more
doaj   +1 more source

Numerical solution of the second order linear and nonlinear integro-differential equations using Haar wavelet method

open access: yesArab Journal of Basic and Applied Sciences, 2021
In this paper, a numerical algorithm is developed for the solution of second order linear and nonlinear integro-differential equations. The Haar collocation technique is applied to second order linear and nonlinear integro-differential equations. In Haar
Rohul Amin   +4 more
doaj   +1 more source

Approximate Solution of a Class of Highly Oscillatory Integral Equations Using an Exponential Fitting Collocation Method

open access: yesJournal of Mathematics, 2023
This paper deals with the numerical solution of a class of highly oscillatory Volterra integral equations by collocation methods based on the exponential fitting technique.
S. Khudhair Abbas   +2 more
doaj   +1 more source

Unique solvability for an inverse problem of a nonlinear parabolic PDE with nonlocal integral overdetermination condition

open access: yesOpen Mathematics, 2022
In this work, the solvability for an inverse problem of a nonlinear parabolic equation with nonlocal integral overdetermination supplementary condition is examined.
Huntul Mousa J.   +3 more
doaj   +1 more source

Shifted Jacobi collocation scheme for multidimensional time-fractional order telegraph equation [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2020
We propose a numerical scheme to solve a general class of time-fractional order telegraph equation in multidimensions using collocation points nodes and approximating the solution using double shifted Jacobi polynomials.
R.M. Hafez, Y.H. Youssri
doaj   +1 more source

Numerical Solution Of The Heat Equation By Cubic B-Spline Collocation Method [PDF]

open access: yes, 2023
This work proposes a numerical scheme for heat parabolic problem by implementing a collocation method with a cubic B-spline for a uniform mesh. The key idea of this method is to apply forward finite difference and Crank–Nicolson methods for time and ...
A. Sabawi, Younis, Q. Hamad, Hoshman
core   +1 more source

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