Results 111 to 120 of about 17,710,470 (300)
Single-shot ultrafast laser processing of high-aspect-ratio nanochannels using elliptical Bessel beams [PDF]
, 2017 R. Meyer +8 more
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Generation of Optical Quasiparticles with Spin–Orbit Conversion in a Single Q‐Plate
Laser &Photonics Reviews, EarlyView.Spin‐Orbit conversion approach with a q‐plate for generating optical quasiparticles. ABSTRACT In this work, we detail a novel approach which can be used for the generation of optical quasiparticles. This process leverages both spin‐orbit conversion control with wavelength de‐tuning in a commercially available q‐plate.
Jingni Geng +3 more
wiley +1 more source
Mathematische Nachrichten, EarlyView.Abstract This paper is devoted to the approximation of two‐ and three‐dimensional Dirac operators HV∼δΣ$H_{\widetilde{V} \delta _\Sigma }$ with combinations of electrostatic and Lorentz scalar δ$\delta$‐shell interactions in the norm resolvent sense. Relying on results from Behrndt, Holzmann, and Stelzer‐Landauer [Math. Nachr.
Jussi Behrndt +2 more
wiley +1 more source
Mathematical Methods in the Applied Sciences, EarlyView.A highly accurate numerical method is given for the solution of boundary value problem of generalized Bagley‐Torvik (BgT) equation with Caputo derivative of order 0<β<2$$ 0<\beta <2 $$ by using the collocation‐shooting method (C‐SM). The collocation solution is constructed in the space Sm+1(1)$$ {S}_{m+1}^{(1)} $$ as piecewise polynomials of degree at ...
Suzan Cival Buranay +2 more
wiley +1 more source
Inverse spectral analysis for singular differential operators with matrix coefficients
Electronic Journal of Differential Equations, 2006 Let $L_alpha$ be the Bessel operator with matrix coefficients defined on $(0,infty)$ by $$ L_alpha U(t) = U''(t)+ {I/4-alpha^2over t^2}U(t), $$ where $alpha$ is a fixed diagonal matrix.
Nour el Houda Mahmoud, Imen Yaich
doaj
Mathematics in Applied Sciences and EngineeringThis research paper investigates the dynamic behaviour of a heterogeneous three-server queuing model with multiple vacation. The model also accounts for the possibility that a disaster could occur during busy periods or on vacation, in which case the ...
V. Karthick, V. Suvitha
doaj +1 more source
On a gateway between continuous and discrete Bessel and Laguerre\n processes [PDF]
, 2018 Laurent Miclo, Pierre Patie
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Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To develop accelerated 3D phase contrast (PC) MRI using jointly learned wave encoding and reconstruction. Methods Pseudo‐fully sampled neurovascular 4D flow data (N = 40) and a simulation framework were used to learn phase encoding locations, wave readout parameters, and model‐based reconstruction network (MoDL) for a rapid 3D PC scan (
Chenwei Tang +7 more
wiley +1 more source
Poisson Processes and a Bessel Function Integral
SIAM Review, 1985 The probability of winning a simple game of competing Poisson processes turns out to be equal to the well-known Bessel function integral J(x,y) [cf. \textit{Y. L. Luke}, Integrals of Bessel functions. (1962; Zbl 0106.043)]. Several properties of J, some of which seem to be new, follow quite easily from this probabilistic interpretation. The results are
openaire +1 more source
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose PCr/ATP ratio is determined at 7 T typically using Fourier‐transform based magnetic resonance spectroscopic imaging sequences (FT‐MRSI). These sequences require acquisition times longer than desirable for inclusion in cardiac clinical trials. Concentric ring trajectory (CRT‐MRSI) has been described as an accelerated alternative k‐space
Ferenc E. Mózes +8 more
wiley +1 more source