Results 81 to 90 of about 2,040,052 (266)

WEIGHTED INTEGRABILITY RESULTS FOR FIRST HANKEL-CLIFFORD TRANSFORM

open access: yesПроблемы анализа, 2023
We obtain sufficient conditions for the weighted integrability of the first Hankel-Clifford transforms of functions from generalized integral Lipschitz classes.
S. S. Volosivets
doaj  

Field dispersion in uniformly‐excited radial parallel plate waveguides for a compact proton accelerator design

open access: yesMedical Physics, Volume 52, Issue 7, July 2025.
Abstract Background Proton therapy (PT) is a beneficial modality for treating certain cancers but remains under utilized due in part to the high cost of existing PT devices. Dielectric wall accelerators (DWAs) are a proposed class of coreless induction accelerators that may present a suitable option for compact and affordable PT.
Morgan J. Maher   +4 more
wiley   +1 more source

Rapid quantitative MRI at 46 mT: Accelerated T1 and T2 mapping with low‐rank reconstructions

open access: yesMagnetic Resonance in Medicine, Volume 94, Issue 1, Page 119-133, July 2025.
Abstract Purpose To evaluate accelerated T1‐ and T2‐mapping techniques for ultra–low‐field MRI using low‐rank reconstruction methods. Methods Two low‐rank–based algorithms, image‐based locally low‐rank (LLR) and k‐space–based structured low‐rank (SLR), were implemented to accelerate T1 and T2 mapping on a 46 mT Halbach MRI scanner.
Yiming Dong   +5 more
wiley   +1 more source

Analytical Solution of a Fractional Model of Fluid Flow Through Narrowing System in Terms of Mittag-Leffler Function

open access: yesInternational Journal of Applied Mechanics and Engineering, 2020
In this work, we discuss a fractional model of a flow equation in a simple pipeline. Pipeline narrowing is a crucial aspect in drinking water distribution processes, sewage system and in oil-well schemes.
A. Choudhary, D. Kumar, J. Singh
doaj   +1 more source

Poroelastic Origins of the Noordbergum Effect

open access: yesWater Resources Research, Volume 61, Issue 7, July 2025.
Abstract The Noordbergum effect refers to temporary rise in hydraulic heads of surrounding observation wells for a short time after starting groundwater withdrawal from a nearby well, before return to the expected declining trend. This effect is herein studied through a poroelastic model of a three‐layer aquifer system comprising a middle aquifer layer
Ehsan Tavakol, Amin Mehrabian
wiley   +1 more source

Spanning Multi‐Asset Payoffs With ReLUs

open access: yesMathematical Finance, Volume 35, Issue 3, Page 682-707, July 2025.
ABSTRACT We propose a distributional formulation of the spanning problem of a multi‐asset payoff by vanilla basket options. This problem is shown to have a unique solution if and only if the payoff function is even and absolutely homogeneous, and we establish a Fourier‐based formula to calculate the solution.
Sébastien Bossu   +2 more
wiley   +1 more source

Hankel Transformation and Hankel Convolution of Tempered Beurling Distributions [PDF]

open access: yesRocky Mountain Journal of Mathematics, 2001
In this paper we complete the distributional theory of Hankel transformation developed in [5] and [18]. New Frechet function spaces H μ (w) are introduced. The functions in H μ (w) have a growth in infinity restricted by the Beurling type function w. We study on H μ (w) and its dual the Hankel transformation and the Hankel convolution.
Belhadj, M., Betancor, J.J.
openaire   +2 more sources

A Study on the k-Mersenne and k-Mersenne-Lucas Sequences

open access: yesUniversal Journal of Mathematics and Applications
In this study, we examine an application of $k-$Mersenne and $k-$Mersenne-Lucas sequences. We present the Catalan transforms of these sequences and give the properties of these Catalan transforms. Catalan transforms of $k-$Mersenne and $k-$Mersenne-Lucas
Mine Uysal   +3 more
doaj   +1 more source

Three methods for performing Hankel transforms [PDF]

open access: yes
Three methods for performing Hankel transforms with optical or digital processors are described. The first method is applicable when the input data is available in Cartesian (x-y) format and uses the close connection between generalized Hankel transform ...
Athale, R. A., Lee, J. N., Szu, H. H.
core   +1 more source

Linear perturbations for the vacuum axisymmetric Einstein equations

open access: yes, 2010
In axial symmetry, there is a gauge for Einstein equations such that the total mass of the spacetime can be written as a conserved, positive definite, integral on the spacelike slices.
A. Weinstein   +7 more
core   +1 more source

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