Results 11 to 20 of about 1,096,865 (195)

The Fourier-Bessel transform [PDF]

open access: yes, 2010
In this paper we devise a new multi-dimensional integral transform within the Clifford analysis setting, the so-called Fourier-Bessel transform. It appears that in the two-dimensional case, it coincides with the Clifford-Fourier and cylindrical Fourier transforms introduced earlier.
De Schepper, Nele   +2 more
openaire   +2 more sources

On estimates for the generalized Fourier-Bessel transform [PDF]

open access: yesProyecciones (Antofagasta), 2018
Two estimates useful in applications are proved for the generalized Fourier-Bessel transform in the space  L2a,n as applied to some classes of functions characterized by a generalized modulus of continuity  
Akhlidj, A., Daher, R., Hamma, M. El
openaire   +3 more sources

Beurling’S Theorem and Lp− Lqmorgan’S Theorem for the Generalized Bessel-Struve Transform [PDF]

open access: yesInternational Journal of Analysis and Applications, 2016
The generalized Bessel-Struve transform satisfies some uncertainty principles similar to the Euclidean Fourier transform. A generalization of Beurling’s theorem and Lp− LqMorgan’s theorem obtained for the generalized Bessel-Struve transform.
A. Abouelaz   +3 more
doaj   +3 more sources

A Reverse of the Cauchy-Bunyakovsky-Schwarz Integral Inequality for Complex-Valued Functions and Applications for Fourier Transform [PDF]

open access: yes, 2004
A reverse of the Cauchy-Bunyakovsky-Schwarz integral inequality for complex-valued functions and applications for the finite Fourier transform are ...
Hanna, George T   +2 more
core   +8 more sources

GENERALIZATION OF TITCHMARSH'S THEOREM FOR THE GENERALIZED FOURIER-BESSEL TRANSFORM [PDF]

open access: yesInternational Journal of Mathematical Modelling & Computations, 2016
In this paper, using a generalized translation operator, we prove theestimates for the generalized Fourier-Bessel transform in the space L2 on certainclasses of functions.
S. El ouadih, R. Daher, M. El hamma
doaj   +1 more source

Spatiotemporal Computational Meta-Imager for Broadband Dual-Layer Optical Convolution. [PDF]

open access: yesAdv Sci (Weinh)
A single‐layer polarization‐multiplexed meta‐imager achieves factorized dual‐layer broadband convolution via spatiotemporal kernel decomposition. Fixed Bessel‐vortex bases and time‐sequential liquid‐crystal modulation deliver tunable signed weights and in‐situ fabrication‐error compensation. Experiments verify improved classification performance across
Wang M   +6 more
europepmc   +2 more sources

On Derivatives, Riesz Transforms and Sobolev Spaces for Fourier–Bessel expansions [PDF]

open access: yesJournal of Fourier Analysis and Applications, 2021
We study the problem of an appropriate choice of derivatives associated with discrete Fourier-Bessel expansions. We introduce a new so-called essential measure Fourier-Bessel setting, where the relevant derivative is simply the ordinary derivative. Then we investigate Riesz transforms and Sobolev spaces in this context.
Bartosz Langowski, Adam Nowak
openaire   +3 more sources

A Wavelet Algorithm for Fourier-Bessel Transform Arising in Optics [PDF]

open access: yesInternational Journal of Engineering Mathematics, 2015
The aim of the paper is to propose an efficient and stable algorithm that is quite accurate and fast for numerical evaluation of the Fourier-Bessel transform of order ν,  ν>-1, using wavelets. The philosophy behind the proposed algorithm is to replace the part tf(t) of the integral by its wavelet decomposition obtained by using CAS wavelets thus ...
Irfan, Nagma, Siddiqi, A. H.
openaire   +1 more source

An Application to Transient Current Signal based Induction Motor Fault Diagnosis of Fourier-Bessel Expansion and Simplified Fuzzy ARTMAP [PDF]

open access: yes, 2013
The start-up transient signals have been widely used for fault diagnosis of induction motor because they can reveal early defects in the development process, which are not easily detected with the signals in the steady state operation. However, transient
Ball, Andrew   +4 more
core   +1 more source

Modelling one-dimensional elastic diffusion processes in an orthotropic solid cylinder under unsteady volumetric perturbations [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2022
A polar-symmetric elastic diffusion problem is considered for an orthotropic multicomponent homogeneous cylinder under uniformly distributed radial unsteady volumetric perturbations.
Andrei V Zemskov   +2 more
doaj   +1 more source

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