Results 1 to 10 of about 32,843 (115)

Some applications of Sigmoid functions [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization, 2021
In numerical analysis, the process of fitting a function via given data is called interpolation. Interpolation has many applications in engineering and science.
M. A. Jafari, A. Aminataei
doaj   +1 more source

Construction of optimal interpolation formula exact for trigonometric functions by Sobolev’s method

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2022
The paper is devoted to derivation of the optimal interpolation formula in W2(0,2)(0,1) Hilbert space by Sobolev’s method. Here the interpolation formula consists of a linear combination   ΣNβ=0Cβφ(xβ) of the given values of a function φ from the space ...
Shadimetov, Kh.M.   +2 more
doaj   +1 more source

An extension of Lagrange interpolation formula and its applications [PDF]

open access: yesMathematics and Computational Sciences, 2023
In this work, a new type of interpolation formula is introduced. These formulas can be an extension of the Lagrange interpolation formula. The error of this new type of interpolation is calculated. In order to display efficiency of the proposed formulas,
Mohammad Ali Jafari, Azim Aminataei
doaj   +1 more source

Caputo-Fabrizio approach to numerical fractional derivatives

open access: yesBibechana, 2023
Fractional calculus is an essential tool in every area of science today. This work gives the quadratic interpolation-based L1-2 formula for the Caputo-Fabrizio derivative, a numerical technique for approximating the fractional derivative.
Shankar Pariyar, Jeevan Kafle
doaj   +3 more sources

Finite Difference Scheme and Finite Volume Scheme for Fractional Laplacian Operator and Some Applications

open access: yesFractal and Fractional, 2023
The fractional Laplacian operator is a very important fractional operator that is often used to describe several anomalous diffusion phenomena. In this paper, we develop some numerical schemes, including a finite difference scheme and finite volume ...
Junjie Wang, Shoucheng Yuan, Xiao Liu
doaj   +1 more source

On the numerical Picard iterations with collocations for the initial value problem

open access: yesJournal of Numerical Analysis and Approximation Theory, 2019
Some variants of the numerical Picard iterations method are presented to solve an IVP for an ordinary differential system. The term "numerical" emphasizes that a numerical solution is computed.
Ernest Scheiber
doaj   +7 more sources

Bivariate Thiele-Like Rational Interpolation Continued Fractions with Parameters Based on Virtual Points

open access: yesMathematics, 2020
The interpolation of Thiele-type continued fractions is thought of as the traditional rational interpolation and plays a significant role in numerical analysis and image interpolation.
Le Zou   +5 more
doaj   +1 more source

Some new kinds of interpolation formulas and its applications [PDF]

open access: yesMathematics and Computational Sciences, 2022
In this work, using the determination function, some new kinds of interpolation formulas are presented.These novel formulas are extensions of Lagrange interpolation. Error formula for these new kind of interpolation formulas are obtained.
M. A Jafari, A Aminataei
doaj   +1 more source

Near Real-Time Ground-to-Ground Infrared Remote-Sensing Combination and Inexpensive Visible Camera Observations Applied to Tomographic Stack Emission Measurements

open access: yesRemote Sensing, 2018
Evaluation of the environmental impact of gas plumes from stack emissions at the local level requires precise knowledge of the spatial development of the cloud, its evolution over time, and quantitative analysis of each gaseous component.
Philippe de Donato   +3 more
doaj   +1 more source

On Interpolative Meshless Analysis of Orthotropic Elasticity

open access: yesBuildings, 2023
As one possible alternative to the finite element method, the interpolation characteristic is a key property that meshless shape functions aspire to. Meanwhile, the interpolation meshless method can directly impose essential boundary conditions, which is
You-Yun Zou   +4 more
doaj   +1 more source

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