Results 41 to 50 of about 3,380 (222)

Sleep and cardiac autonomic modulation in older adults: Insights from an at‐home study with auditory deep sleep stimulation

open access: yesJournal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary The autonomic nervous system regulates cardiovascular activity during sleep, likely impacting cardiovascular health. Aging, a primary cardiovascular risk factor, is associated with cardiac autonomic disbalance and diminished sleep slow waves. Therefore, slow waves may be linked to aging, autonomic activity and cardiovascular health. However, it
Stephanie Huwiler   +5 more
wiley   +1 more source

Optimized M-Hermite Interpolation for Geometrically and Physically Consistent Airfoil Reconstruction

open access: yesMathematics
Accurate airfoil reconstruction is crucial for aerodynamic analysis, geometric modeling, and computational design applications. This study proposes an optimized M-Hermite interpolation framework for high-accuracy airfoil reconstruction and geometric ...
Bihter Das   +2 more
doaj   +1 more source

Hermite Interpolational Bohemians

open access: yesMaple Transactions
Companion matrices in the Lagrange basis were first tested using what are now known as Bohemian matrices. Later the Lagrange companions were extended to Hermite interpolational companions. We use those in this paper to explore the analog of Littlewood polynomials, that is, those with ±1 coefficients, in certain Hermite interpolational bases.
Robert M. Corless, Michelle Hatzel
openaire   +1 more source

Likelihood Estimation for Stochastic Differential Equations with Mixed Effects

open access: yesScandinavian Journal of Statistics, EarlyView.
ABSTRACT Stochastic differential equations provide a powerful tool for modelling dynamic phenomena affected by random noise. When time series are observed for several experimental units, it is often the case that some of the parameters vary between the individual experimental units.
Fernando Baltazar‐Larios   +2 more
wiley   +1 more source

Mean Convergence of Hermite Interpolation

open access: yes, 1994
We study weighted mean convergence properties of Hermite interpolation based on the zeros of certain generalized Jacobi polynomials such as necessary and sufficient conditions for such convergence for all continuously differentiable functions ...
Yuan, X., Nevai, P.
core   +1 more source

A class of G3 high precision eighth-degree Hermite interpolation splines with multiple parameters(一种多参数G3高精度的八次Hermite插值样条)

open access: yesZhejiang Daxue xuebao. Lixue ban
To address the issues of high continuity and high precision in engineering calculations, this paper introduces an eighth-degree Hermite-type interpolation spline featuring high-order continuity, high precision, and multiple parameters.
谢进(XIE Jin), 尹行(YIN Hang)
doaj   +1 more source

A new method for interpolating yield curve data, with applications to the South African market

open access: yesSouth African Journal of Economic and Management Sciences, 2013
This paper presents a method for interpolating yield curve data in a manner that ensures positive and continuous forward curves. As shown by Hagan and West (2006), traditional interpolation methods suffer from problems: they posit unreasonable ...
Paul Du Preez, Eben Mare
doaj   +1 more source

Hermite curve interpolation trajectory generation.

open access: yes, 2017
Hermite curve interpolation trajectory generation.
Min Li (12799)   +7 more
core   +1 more source

Local Polynomial Regression and Filtering for a Versatile Mesh‐Free PDE Solver

open access: yesInternational Journal for Numerical Methods in Fluids, Volume 98, Issue 7, Page 804-839, July 2026.
A high‐order, mesh‐free finite difference method for solving differential equations is presented. Both derivative approximation and scheme stabilisation is carried out by parametric or non‐parametric local polynomial regression, making the resulting numerical method accurate, simple and versatile. Numerous numerical benchmark tests are investigated for
Alberto M. Gambaruto
wiley   +1 more source

Analysis of the influence of interpolation algorithm on the numerical simulation results of transmission boundary

open access: yes地震科学进展
The distance traveled by contour wave with artificial wave velocity in a step-time is often inconsistent with the mesh size. Therefore, when the transmission boundary formula is applied, the calculation nodes of transmission boundary are usually ...
Xueliang Duan   +8 more
doaj   +1 more source

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