Results 21 to 30 of about 53,984 (288)

Isogeometric Analysis-Based Solidification Simulation and an Improved Way to Apply Supercooling on Droplet Boundary

open access: yesMetals, 2022
The classic finite difference method (FDM) has been successfully adopted in the simulation of dendritic solidification, which is based on phase-field theory. Nevertheless, special strategies of boundary integral and projection are required for applying a
Jiangping Xu   +5 more
doaj   +1 more source

Nonparametric Bayesian hazard rate models based on penalized splines [PDF]

open access: yes, 2003
Extensions of the traditional Cox proportional hazard model, concerning the following features are often desirable in applications: Simultaneous nonparametric estimation of baseline hazard and usual fixed covariate effects, modelling and detection of ...
Fahrmeir, Ludwig, Hennerfeind, Andrea
core   +2 more sources

Pointwise Convergence in Probability of General Smoothing Splines [PDF]

open access: yes, 2017
Establishing the convergence of splines can be cast as a variational problem which is amenable to a $\Gamma$-convergence approach. We consider the case in which the regularization coefficient scales with the number of observations, $n$, as $\lambda_n=n^{-
Johansen, Adam M., Thorpe, Matthew
core   +2 more sources

Special form test signals formation based on exponential splines

open access: yesMECHANICS OF GYROSCOPIC SYSTEMS, 2018
        Застосування випробувальних сигналів спеціальної форми, які описуються сумою експонент, дозволяє підвищити продуктивність та спростити процедуру контролю параметрів складних багатоелементних електричних кіл. Для формування таких сигналів запропоновано використати метод дискретного синтезу на основі експоненціальних сплайнових моделей.         В
openaire   +4 more sources

The Hodrick-Prescott Filter: A special case of penalized spline smoothing

open access: yesElectronic Journal of Statistics, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Paige, Robert L., Trindade, A. Alexandre
openaire   +3 more sources

Penalized additive regression for space-time data: a Bayesian perspective [PDF]

open access: yes, 2003
We propose extensions of penalized spline generalized additive models for analysing space-time regression data and study them from a Bayesian perspective.
Fahrmeir, Ludwig   +2 more
core   +3 more sources

Cardinal approximation of functions by splines on an interval

open access: yesMathematical Modelling and Analysis, 2009
The cardinal interpolant of functions on the real line by splines is determined by certain formula free of solving large or infinite systems. We apply this formula to functions given on the interval [0,1] introducing special extensions of functions from [
Gennadi Vainikko
doaj   +1 more source

On the Use of High-Order Shape Functions in the SAFE Method and Their Performance in Wave Propagation Problems

open access: yesMathematical and Computational Applications, 2022
In this research, high-order shape functions commonly used in different finite element implementations are investigated with a special focus on their applicability in the semi-analytical finite element (SAFE) method being applied to wave propagation ...
Elyas Mirzaee Kakhki   +7 more
doaj   +1 more source

Two-Stage Spline-Approximation with an Unknown Number of Elements in Applied Optimization Problem of a Special Kind [PDF]

open access: yesMathematics and Statistics, 2021
Being a continuation of the paper published in Mathematics and Statistics, vol. 7, No. 5, 2019, this article describes the algorithm for the first stage of spline- approximation with an unknown number of elements of the spline and constraints on its parameters. Such problems arise in the computer-aided design of road routes and other linear structures.
V. I. Struchenkov, D. A. Karpov
openaire   +1 more source

Positivity and Monotonicity Preserving Biquartic Rational Interpolation Spline Surface

open access: yesJournal of Applied Mathematics, 2014
A biquartic rational interpolation spline surface over rectangular domain is constructed in this paper, which includes the classical bicubic Coons surface as a special case.
Xinru Liu, Yuanpeng Zhu, Shengjun Liu
doaj   +1 more source

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