Results 91 to 100 of about 70,750 (232)
Demultiplexing in mode-division multiplexing system using multichannel blind deconvolution
IEEE Photonics Journal, 2016 We propose a mode demultiplexing method based on multichannel blind deconvolution (MBD) for a mode-division multiplexing (MDM) system. A 6 $\times$ 6 MDM transmission system is simulated to verify the performance of MBD.
Li Yan, Guijun Hu
doaj +1 more source
On Birkhoff quadrature formulas II
Journal of Approximation Theory, 1989 Let \(-1=x_{nn}
Department of Mathematics, University of Florida, Gainesville, Florida 32611, U.S.A. ( host institution ) +2 more
openaire +3 more sources
RF‐Shielding of Laser‐Cut Venous Stents: Calculations, Simulations, and Experiments
Magnetic Resonance in Medicine, Volume 95, Issue 4, Page 2331-2344, April 2026.ABSTRACT Purpose To develop an analytical model of the RF‐shielding of laser‐cut venous stents for different orientations and stent geometries. Methods Laser‐cut venous stents are modeled as a grid composed of circular and rectangular loops. As these loops are orthogonal they shield different components of the transmit RF field.
Lisa Regler +7 more
wiley +1 more source
NMR in Biomedicine, Volume 39, Issue 4, April 2026.This study investigates the effect of cerebral and vascular (beta‐amyloid) Aβ on regional myeloarchitecture and lipid composition in a murine model of Alzheimer's disease (AD). The study highlights the feasibility of quantitative MRI and chemical exchange saturation transfer (CEST) imaging to identify multiple biophysical mechanisms involved in ...
Syed Salman Shahid +7 more
wiley +1 more source
An improved technique for determining reflection from semi-infinite atmospheres with linearly anisotropic phase functions [PDF]
A solution to the problem of reflection from a semi-infinite atmosphere is presented, based upon Chandrasekhar's H-function method for linearly anisotropic phase functions.
Fricke, C. L.
core +1 more source
Homogenization With Guaranteed Bounds via Primal‐Dual Physically Informed Neural Networks
International Journal for Numerical Methods in Engineering, Volume 127, Issue 6, 30 March 2026.ABSTRACT Physics‐informed neural networks (PINNs) have shown promise in solving partial differential equations (PDEs) relevant to multiscale modeling, but they often fail when applied to materials with discontinuous coefficients, such as media with piecewise constant properties. This paper introduces a dual formulation for the PINN framework to improve
Liya Gaynutdinova +3 more
wiley +1 more source
International Journal of Mathematics and Mathematical Sciences, 2012 We consider families of general four-point quadrature formulae using a generalization of the Montgomery identity via Taylor’s formula. The results are applied to obtain some sharp inequalities for functions whose derivatives belong to 𝐿𝑝 spaces ...
J. Pečarić, M. Ribičić Penava
doaj +1 more source
Impact of Intercore Crosstalk on the Transmission Distance of QAM Formats in Multicore Fibers
IEEE Photonics Journal, 2016 We investigate the impact of intercore crosstalk on the achievable transmission distance of three square quadrature amplitude modulation (QAM) formats. We show that increasing intercore crosstalk across an 18 dB range starting from −43.4 dB/100 km
B. J. Puttnam +6 more
doaj +1 more source
Convergence of Gaussian Quadrature Formulas
Journal of Approximation Theory, 2000 Classical Gaussian formulas are well known. They construct a polynomial interpolating in the zeros of a polynomial orthogonal with respect to a positive measure \(\alpha\) and the integral of this polynomial is a quadrature formula for \(\int f(x) d\alpha(x)\) with maximal polynomial degree of exactness.
openaire +2 more sources
On Gauss’ and Tchebycheff’s quadrature formulas [PDF]
Bulletin of the American Mathematical Society, 1944 Not ...
openaire +3 more sources