Results 71 to 80 of about 3,206 (190)

Hybrid Haar wavelet and meshfree methods for hyperbolic double interface problems: Numerical implementations and comparative performance analysis

Partial Differential Equations in Applied Mathematics
This paper introduces a variety of approaches for solving 2D and 3D hyperbolic double interface problems. The methods are based on the Haar wavelet method, multiquadric radial basis function method, and integrated multiquadric radial basis function ...
Muhammad Faheem, Muhammad Asif, Nadeem Haider, Rohul Amin, Qasem-Al-Mdallal   +4 more
doaj   +1 more source

Analysis of laminated doubly-curved shells by alayerwise theory and radial basis functions collocation, accounting for through-the-thickness deformations

, 2011
In this paper, the static and free vibration analysis of laminated shells is performed by radial basis functions collocation, according to a sinusoidal shear deformation theory (SSDT).
A.J.M. Ferreira, Arnold, Bathe, C.M.C. Roque, Carrera, Carrera, Carrera, Carrera, Carrera, Chapelle, Chen, Cheng, Chinosi, Cinefra, Dai, D’Ottavio, E. Carrera, Ferreira, Ferreira, Ferreira, Ferreira, Ferreira, Flügge, Hardy, Hon, Hon, Huang, Kansa, Koiter, Liew, Liu, Liu, Liu, Liu, M. Cinefra, Naghdi, O. Polit, Pitkäranta, Polit, Q Huang, Reddy, Reddy, Scordelis, Touratier, Touratier, Touratier, Vidal, Wang, Wang, Xiang, Xiang, Zienkiewicz   +51 more
core   +1 more source

Polyharmonic Multiquadric Particular Solutions for Reissner/Mindlin Plate [PDF]

Mathematical Problems in Engineering, 2015
Analytical particular solutions of the polyharmonic multiquadrics are derived for both the Reissner and Mindlin thick-plate models in a unified formulation. In the derivation, the three coupled second-order partial differential equations are converted into a product operator of biharmonic and Helmholtz operators using the Hörmander operator ...
openaire   +1 more source

A shape optimization pipeline for marine propellers by means of reduced order modeling techniques

International Journal for Numerical Methods in Engineering, Volume 125, Issue 7, 15 April 2024.
Abstract In this article, we propose a shape optimization pipeline for propeller blades, applied to naval applications. The geometrical features of a blade are exploited to parametrize it, allowing to obtain deformed blades by perturbating their parameters. The optimization is performed using a genetic algorithm that exploits the computational speed‐up
Anna Ivagnes, Nicola Demo, Gianluigi Rozza   +2 more
wiley   +1 more source

A univariate quasi-multiquadric interpolationwith better smoothness

Computers & Mathematics with Applications, 2004
A univariate quasi-interpolation scheme is proposed which is derivative-free and efficient. Since it is a quasi-interpolation method, no linear systems need to be solved for computing the required coefficients; this makes it also suitable for smoothing.
openaire   +2 more sources

On Shifted Cardinal Interpolation by Gaussians and Multiquadrics

Journal of Approximation Theory, 1996
The authors study so-called shifted Gaussian interpolation where approximants are given as a (finite or infinite) linear combination of translates of some Gaussian. More precisely, the approximants \(s\) are of the form \[ s(x)= \sum_{k\in\mathbb{Z}^d} a_k \varphi(x+\alpha-k) \qquad (x\in\mathbb{R}^d), \tag{1} \] where \(\mathbb{Z}\) is the set of ...
Baxter, B.J.C., Sivakumar, N.
openaire   +2 more sources

Multi‐Spacecraft Magnetic Field Reconstructions: A Cross‐Scale Comparison of Methods

Earth and Space Science, Volume 11, Issue 3, March 2024.
Abstract Space plasma studies frequently use in situ magnetic field measurements taken from many spacecraft simultaneously. A useful data product of these measurements is the reconstructed magnetic field in a volume near the spacecraft observatory. We compare a standard Linear method of computing the magnetic field at arbitrary spatial points to two ...
T. Broeren, K. G. Klein, J. M. TenBarge
wiley   +1 more source

Efficient Numerical Solution of the Sharma-Tasso-Olver Equation Using Radial Basis Function-Pseudo Spectral Method with Comparative Analysis

Wasit Journal for Pure Sciences
In this study, we will solve the Sharma-Tasso-Olver equation by utilizing the radial basis function-pseudo spectral approach. Pseudo spectral techniques are renowned for their exceptional precision but have constraints regarding their ability to handle ...
Luqman Zebari
doaj   +1 more source

Regular Families of Kernels for Nonlinear Approximation

, 2019
This article studies sufficient conditions on families of approximating kernels which provide $N$--term approximation errors from an associated nonlinear approximation space which match the best known orders of $N$--term wavelet expansion.
Hamm, Keaton, Ledford, Jeff
core   +1 more source

Wetlands Water Level Measurements From the New Generation of Satellite Laser Altimeters: Systematic Spatial‐Temporal Evaluation of ICESat‐2 and GEDI Missions Over the South Florida Everglades

Water Resources Research, Volume 60, Issue 3, March 2024.
Abstract The ICESat‐2 and GEDI missions were launched in 2018, becoming the new generation of space‐borne laser altimeters. These missions provide unprecedented global geodetic elevations, opening great opportunities for water level monitoring. The potential of these altimeters has been demonstrated in open‐water environments such as lakes, rivers, and
Sebastián Palomino‐Ángel, Shimon Wdowinski, Shanshan Li   +2 more
wiley   +1 more source