Results 11 to 20 of about 4,805,496 (293)

Statistical inference on nonparametric regression model with approximation of Fourier series function: Estimation and hypothesis testing [PDF]

open access: yesMethodsX
Nonparametric regression is an approximation method in regression analysis that is not constrained by the assumption of knowing the regression curve. One of the functions to approximate the curve is a Fourier series function. The nonparametric regression
Mustain Ramli   +2 more
doaj   +2 more sources

The minimality of mean square error in chirp approximation using fractional fourier series and fractional fourier transform [PDF]

open access: yesScientific Reports, 2022
Chirps are familiar in nature, have a built-in resistance to noise and interference, and are connected to a wide range of highly oscillatory processes.
Omar T. Bafakeeh   +9 more
doaj   +2 more sources

On Fourier Series of Fuzzy-Valued Functions [PDF]

open access: yesThe Scientific World Journal, 2014
Fourier analysis is a powerful tool for many problems, and especially for solving various differential equations of interest in science and engineering.
Uğur Kadak, Feyzi Başar
doaj   +2 more sources

Discrete Fourier–Neumann series [PDF]

open access: yesJournal of Approximation Theory, 2004
Let Jμ denote the Bessel function of order μ. The system A formula is presented. with n = 0, 1,..., α> - 1, and where ps denotes the sth positive zero of Jα (ax), is orthonormal in l2 (ℕ). In this paper, we study the mean convergence of the Fourier series with respect to this system. Also, we describe the space in which the span of the system is dense.
Ciaurri, Óscar [0000-0002-1695-3311]   +1 more
openaire   +5 more sources

Fourier-series-based virtual fields method for the identification of 2-D stiffness distributions [PDF]

open access: yes, 2013
The Virtual Fields Method (VFM) is a powerful technique for the calculation of spatial distributions of material properties from experimentally-determined displacement fields.
Ian A. Ashcroft (7125329)   +3 more
core   +7 more sources

Sobre séries de Fourier [PDF]

open access: yesCQD Revista Eletrônica Paulista de Matemática, 2016
O objetivo principal deste trabalho é apresentar alguns pontos importantes da teoria da Análise de Fourier. Na primeira seção descrevemos a trajetória de Fourier, um dos matemáticos mais citados do século XX. A seção seguinte introduz a Série de Fourier
Felipe Felix Souto, Marta Cilene Gadotti
doaj   +2 more sources

A Didactic and Visual Approach to the Fourier Transform

open access: yesRevista Brasileira de Ensino de Física, 2023
This work provides a comprehensive derivation of the Fourier transform, with less emphasis on the mathematical rigor associated with the theory. Instead, its primary goal is to serve as a didactic resource that fosters an understanding of various ...
Daniel José Kmita   +1 more
doaj   +1 more source

Fourier series of higher-order Bernoulli functions and their applications [PDF]

open access: yesJournal of Inequalities and Applications, 2017
Taekyun Kim, D S Kim, Dmitry V Dolgy
exaly   +2 more sources

Notes regarding classical Fourier series

open access: yesJournal of Numerical Analysis and Approximation Theory, 2023
A survey of some classical results from the theory of trigonomtrical series is presented, especially the case of Fourier series. Some new proofs are presented, and Riemann's theory of trigonometrical series is is given special attention.
Paul Bracken
doaj   +1 more source

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