Articles with "quadrature" as a keyword



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Quadrature transceive wireless coil: Design concept and application for bilateral breast MRI at 1.5 T

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Published in 2022 at "Magnetic Resonance in Medicine"

DOI: 10.1002/mrm.29507

Abstract: Development of a novel quadrature inductively driven transceive wireless coil for breast MRI at 1.5 T. read more here.

Keywords: wireless coil; quadrature; breast mri; transceive wireless ... See more keywords
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An adaptive IgA‐BEM with hierarchical B‐splines based on quasi‐interpolation quadrature schemes

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Published in 2018 at "International Journal for Numerical Methods in Engineering"

DOI: 10.1002/nme.5990

Abstract: The isogeometric formulation of Boundary Element Method (BEM) is investigated within the adaptivity framework. Suitable weighted quadrature rules to evaluate integrals appearing in the Galerkin BEM formulation of 2D Laplace model problems are introduced. The… read more here.

Keywords: bem hierarchical; adaptive iga; quadrature; bem ... See more keywords
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The effect of quadrature rules on finite element solutions of Maxwell variational problems. Consistency estimates on meshes with straight and curved elements

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Published in 2021 at "Numerische Mathematik"

DOI: 10.1007/s00211-021-01186-8

Abstract: We study the effects of numerical quadrature rules on error convergence rates when solving Maxwell-type variational problems via the curl-conforming or edge finite element method. A complete {\em a priori} error analysis for the case… read more here.

Keywords: finite element; quadrature; effect quadrature; rules finite ... See more keywords
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A unified quadrature-based superconvergent finite element formulation for eigenvalue computation of wave equations

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Published in 2017 at "Computational Mechanics"

DOI: 10.1007/s00466-016-1334-7

Abstract: A simple and unified finite element formulation is presented for superconvergent eigenvalue computation of wave equations ranging from 1D to 3D. In this framework, a general method based upon the so called $$\alpha $$α mass… read more here.

Keywords: finite element; order; computation; formulation ... See more keywords
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Accurate quadrature of nearly singular line integrals in two and three dimensions by singularity swapping

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Published in 2019 at "BIT Numerical Mathematics"

DOI: 10.1007/s10543-020-00820-5

Abstract: The numerical method of Helsing and co-workers evaluates Laplace and related layer potentials generated by a panel (composite) quadrature on a curve, efficiently and with high-order accuracy for arbitrarily close targets. Since it exploits complex… read more here.

Keywords: singular line; quadrature; singularity; quadrature nearly ... See more keywords
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The Cauchy Integral Formula, Quadrature Domains, and Riemann Mapping Theorems

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Published in 2018 at "Computational Methods and Function Theory"

DOI: 10.1007/s40315-018-0246-2

Abstract: It is well known that a domain in the plane is a quadrature domain with respect to area measure if and only if the function z extends meromorphically to the double, and it is a… read more here.

Keywords: arc length; cauchy integral; integral formula; quadrature domains ... See more keywords
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Polynomial Based Differential Quadrature Methods for the Numerical Solution of Fisher and Extended Fisher–Kolmogorov Equations

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Published in 2017 at "International Journal of Applied and Computational Mathematics"

DOI: 10.1007/s40819-017-0376-7

Abstract: In this paper, polynomial based differential quadrature method is employed to construct the framework of three numerical schemes for reaction–diffusion problems. Finite difference methods are also used in conjunction with differential quadrature in two of… read more here.

Keywords: extended fisher; quadrature; differential quadrature; polynomial based ... See more keywords
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Bandwidth-enhanced differential VCO and varactor-coupled quadrature VCO for mmWave applications

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Published in 2018 at "AEU - International Journal of Electronics and Communications"

DOI: 10.1016/j.aeue.2018.08.005

Abstract: Abstract This paper presents a bandwidth-enhanced differential LC-Voltage Controlled Oscillator (LC-VCO) and varactor-coupled Quadrature VCO (QVCO) designed and simulated in high-performance SiGe HBTs of the GlobalFoundries (GFs) 130 nm SiGe BiCMOS8HP process for mmWave applications. Using… read more here.

Keywords: enhanced differential; bandwidth enhanced; vco varactor; quadrature ... See more keywords
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A GLMs-based difference-quadrature scheme for Volterra integro-differential equations

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Published in 2021 at "Applied Numerical Mathematics"

DOI: 10.1016/j.apnum.2021.02.001

Abstract: Abstract In this paper, a class of general linear methods is combined with a special quadrature rule inherited from natural Runge–Kutta methods for Volterra integral equations to design a more stable and efficient algorithm. The… read more here.

Keywords: quadrature; difference quadrature; quadrature scheme; scheme volterra ... See more keywords

Novel quadrature element formulation for simultaneous local and global buckling analysis of eccentrically stiffened plates

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Published in 2019 at "Aerospace Science and Technology"

DOI: 10.1016/j.ast.2019.02.019

Abstract: Abstract Predicting both buckling load and mode shape of eccentrically stiffened panels correctly is of important and a rather challenging task. In this paper, a novel and efficient quadrature element formulation is developed to fulfill… read more here.

Keywords: formulation; stiffened plates; quadrature; element ... See more keywords
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Hessian-based adaptive sparse quadrature for infinite-dimensional Bayesian inverse problems☆

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Published in 2017 at "Computer Methods in Applied Mechanics and Engineering"

DOI: 10.1016/j.cma.2017.08.016

Abstract: In this work we propose and analyze a Hessian-based adaptive sparse quadrature to compute infinite-dimensional integrals with respect to the posterior distribution in the context of Bayesian inverse problems with Gaussian prior. Due to the… read more here.

Keywords: posterior distribution; adaptive sparse; sparse quadrature; quadrature ... See more keywords