Results 91 to 100 of about 2,040,052 (266)

Some conjectures on the ratio of Hankel transforms for sequences and series reversion [PDF]

open access: yes, 2007
For each element of certain families of integer sequences, we study the term-wise ratios of the Hankel transforms of three sequences related to that element by series reversion.
Barry, P.
core   +1 more source

A spectral, quasi-cylindrical and dispersion-free Particle-In-Cell algorithm

open access: yes, 2016
We propose a spectral Particle-In-Cell (PIC) algorithm that is based on the combination of a Hankel transform and a Fourier transform. For physical problems that have close-to-cylindrical symmetry, this algorithm can be much faster than full 3D PIC ...
Andriyash, Igor A.   +4 more
core   +2 more sources

Optimization of microwave hyperthermia system for focused breast cancer treatment: A study using realistic digital breast phantoms

open access: yesMedical Physics, Volume 52, Issue 6, Page 3557-3569, June 2025.
Abstract Background Microwave breast hyperthermia is a noninvasive treatment method for breast cancer that utilizes microwave energy (ME) sources to raise tissue temperatures above 42∘C$^{\circ }{\rm C}$, inducing tumor cell necrosis. The efficiency of ME deposition depends on the electric field magnitude and tissue conductivity, with antenna phase and
Burak Acar, Tuba Yilmaz, Ali Yapar
wiley   +1 more source

3D MERMAID: 3D Multi‐shot enhanced recovery motion artifact insensitive diffusion for submillimeter, multi‐shell, and SNR‐efficient diffusion imaging

open access: yesMagnetic Resonance in Medicine, Volume 93, Issue 6, Page 2311-2330, June 2025.
Abstract Purpose To enhance SNR per unit time of diffusion MRI to enable high spatial resolution and extensive q‐sampling in a feasible scan time on clinical scanners. Methods 3D multi‐shot enhanced recovery motion‐insensitive diffusion (MERMAID) consists of a whole brain nonselective 3D multi‐shot spin‐echo sequence with an inversion pulse immediately
Sajjad Feizollah, Christine L. Tardif
wiley   +1 more source

INTEGRAL TRANSFORMS WITH THE HOMOTOPY PERTURBATION METHOD AND SOME APPLICATIONS [PDF]

open access: yes
This paper applies He's homotopy perturbation method to compute a large variety of integral transforms. As illustration, the paper gives special attention to the Esscher transform, the Fourier transform, the Hankel transform, the Mellin transform, the ...
Jules Sadefo Kamdem
core  

WAND: Wavelet Analysis‐Based Neural Decomposition of MRS Signals for Artifact Removal

open access: yesNMR in Biomedicine, Volume 38, Issue 6, June 2025.
Wavelet analysis‐based neural decomposition (WAND) is a novel method for decomposing magnetic resonance spectroscopy signals into metabolite‐specific, baseline, and artifact components. WAND employs a U‐Net architecture trained on simulated spectra to predict masks for wavelet coefficients, effectively isolating the desired signal components.
Julian P. Merkofer   +5 more
wiley   +1 more source

Temperaturas estacionarias en un cilindro hueco con conductividad térmica variable usando una transformada de Hankel Stationary temperatures in a hollow cylinder with variable thermic conductivity using a Hankel transform

open access: yesRevista Técnica de la Facultad de Ingeniería, 2002
Resumen En el presente trabajo se usa la transformada finita generalizada de Hankel de tercera clase para determinar la distribución estacionaria de temperatura u(r, z) en un cilindro hueco con conductividad térmica variable.Abstract In the present work ...
Alfredo Villalobos
doaj  

Lectures on Nehari's Theorem on the Polydisk [PDF]

open access: yes, 2006
We give a leisurely proof of a result of Ferguson--Lacey (math.CA/0104144) and Lacey--Terwelleger (math.CA/0601192) on a Nehari theorem for "little" Hankel operators on a polydisk.
Lacey, Michael
core  

Efficient quantum circuits for Toeplitz and Hankel matrices

open access: yes, 2016
Toeplitz and Hankel matrices have been a subject of intense interest in a wide range of science and engineering related applications. In this paper, we show that quantum circuits can efficiently implement sparse or Fourier-sparse Toeplitz and Hankel ...
Mahasinghe, A., Wang, J. B.
core   +1 more source

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