Results 81 to 90 of about 5,337 (195)

Linearization of Lagrange and Hermite interpolating matrix polynomials [PDF]

IMA Journal of Numerical Analysis, 2014
This paper considers interpolating matrix polynomials P (λ) in Lagrange and Hermite bases. A classical approach to investigate the polynomial eigenvalue problem P (λ)x = 0 is linearization, by which the polynomial is converted into a larger matrix pencil with the same eigenvalues.
R. Van Beeumen, W. Michiels, K. Meerbergen   +2 more
openaire   +1 more source

Empirical Results on the Magnetic Prandtl Number in the Slow Solar Wind Based on In Situ Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract The magnetic Prandtl number in the slow solar wind is estimated by using magnetic and velocity Reynolds numbers. The Prandtl number quantifies the ratio of kinetic to magnetic diffusion rates in a plasma, and indicates which process dominates the transport dynamics in a fluid.
T. J. E. Hand, O. W. Roberts, X. Li, T. Knight, Y. Narita, Z. Vörös, A. Pitňa   +6 more
wiley   +1 more source

Strong and auxiliary forms of the semi-Lagrangian method for incompressible flows

, 2005
We present a review of the semi-Lagrangian method for advection-diusion and incompressible Navier-Stokes equations discretized with high-order methods.
A. Allievi, A. McDonald, A. McDonald, A. Oliveira, A. Priestley, A. Robert, A. Staniforth, A.V. Malevsky, A.V. Malevsky, D. Xiu, D. Xiu, E. Leriche, E.S. Suli, F.X. Giraldo, F.X. Giraldo, G. E. Karniadakis, G.E. Karniadakis, J. Xu, J.L. McGregor, J.P. Huffenus, J.R. Koseff, M. Falcone, O. Pironneau, P.K. Smolarkiewicz, S. Dong, S. J. Sherwin, U. Ghia, Y. Achdou, Y. Maday   +28 more
core   +2 more sources

Six Points Implicit Block Method with Extra Derivative for Solving Second Order Ordinary Differential Equations

Journal of Kufa for Mathematics and Computer
The construction of the six-point block methods with extra derivatives for solving   directly is presented in this paper. The suggested block methods concurrently approximate the problem's solution at six points and are formulated using the Hermite ...
Barakat Sajid Dahi, Mohammed Yousif Turki   +1 more
doaj   +1 more source

Reserve Price Signaling With Public Information: Evidence From Online Auto Auctions

The RAND Journal of Economics, Volume 57, Issue 1, Page 245-266, Spring 2026.
ABSTRACT This article considers an auction model in which a seller's choice of reserve price signals her private information about the object's quality. We show that the signaling incentive would lower the seller's payoff and the probability of sale. We estimate the model using a novel dataset from a large online auto auction platform.
Junyan Guan, Boli Xu
wiley   +1 more source

On the constrained mock-Chebyshev least-squares

, 2014
The algebraic polynomial interpolation on uniformly distributed nodes is affected by the Runge phenomenon, also when the function to be interpolated is analytic.
De Marchi, Stefano, Dell'Accio, Francesco, Mazza, Mariarosa   +2 more
core   +1 more source

Probabilistic Identification of Parameters in Dynamic Fracture Propagation

International Journal for Numerical Methods in Engineering, Volume 127, Issue 4, 28 February 2026.
ABSTRACT In this paper, we propose a novel multiphase approach for identifying input parameters in dynamic fracture propagation. Often, such parameters are partially known and uncertain with incomplete input data, resulting in challenges in predicting a reliable dynamic failure response.
Andjelka Stanić, Mijo Nikolić, Hermann G. Matthies, Noémi Friedman   +3 more
wiley   +1 more source

Towards a More General Type of Univariate Constrained Interpolation With Fractal Splines

, 2015
Recently, in [Electronic Transaction on Numerical Analysis, 41 (2014), pp. 420-442] authors introduced a new class of rational cubic fractal interpolation functions with linear denominators via fractal perturbation of traditional nonrecursive rational ...
Chand, A. K. B., Reddy, K. M., Viswanathan, P.   +2 more
core   +1 more source

Efficient Dynamics: Reduced‐Order Modeling of the Time‐Dependent Schrödinger Equation

Advanced Physics Research, Volume 5, Issue 2, February 2026.
Reduced‐order modeling (ROM) approaches for the time‐dependent Schrödinger equation are investigated, highlighting their ability to simulate quantum dynamics efficiently. Proper Orthogonal Decomposition, Dynamic Mode Decomposition, and Reduced Basis Methods are compared across canonical systems and extended to higher dimensions.
Kolade M. Owolabi
wiley   +1 more source

Sampling of non‐Gaussian Ensemble Average Propagators for the simulation of diffusion magnetic resonance images

Magnetic Resonance in Medicine, Volume 95, Issue 2, Page 1255-1265, February 2026.
Abstract Purpose (a) To design a methodology for drawing random samples of any Ensemble Average Propagator (EAP) (b) to modify the KomaMRI simulator to accommodate them as realistic spin movements to simulate diffusion MRI (dMRI) and (c) to compare these simulations with those based on the Diffusion Tensor (DT) model.
Justino R. Rodríguez‐Galván, Pablo Villacorta‐Aylagas, Susana Merino‐Caviedes, Federico Simmross‐Wattenberg, Carlos Castillo‐Passi, Pablo Irarrazaval, Antonio Tristán‐Vega, Carlos Alberola‐López   +7 more
wiley   +1 more source