Results 31 to 40 of about 763,332 (302)

A Multiscale RBF Collocation Method for the Numerical Solution of Partial Differential Equations

open access: yesMathematics, 2019
In this paper, we derive and discuss the hierarchical radial basis functions method for the approximation to Sobolev functions and the collocation to well-posed linear partial differential equations.
Zhiyong Liu, Qiuyan Xu
doaj   +1 more source

Optimal Centers’ Allocation in Smoothing or Interpolating with Radial Basis Functions

open access: yesMathematics, 2021
Function interpolation and approximation are classical problems of vital importance in many science/engineering areas and communities. In this paper, we propose a powerful methodology for the optimal placement of centers, when approximating or ...
Pedro González-Rodelas   +3 more
doaj   +1 more source

Radial basis functions as surrogate models with a priori bias in comparison with a posteriori bias

open access: yesStructural And Multidisciplinary Optimization, 2016
In order to obtain a robust performance, the established approach when using radial basis function networks (RBF) as metamodels is to add a posteriori bias which is defined by extra orthogonality constraints.
Kaveh Amouzgar, N. Strömberg
semanticscholar   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

open access: yesFEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo   +2 more
wiley   +1 more source

Ore resource estimation based on radial based functions - Case study on União Luiz and Morro do Carrapato Gold Deposits (Alta Floresta Gold Province)

open access: yesREM: International Engineering Journal
Radial basis functions can be used as an alternative method for mineral resource estimation when ordinary kriging cannot be done because it is impossible to calculate an experimental variogram.
Taís Celestino dos Santos   +1 more
doaj   +1 more source

Redes neurais e suas aplicações em calibração multivariada Neural networks and its applications in multivariate calibration

open access: yesQuímica Nova, 2001
Neural Networks are a set of mathematical methods and computer programs designed to simulate the information process and the knowledge acquisition of the human brain. In last years its application in chemistry is increasing significantly, due the special
Eduardo O. de Cerqueira   +3 more
doaj   +1 more source

Sequential improvement for robust optimization using an uncertainty measure for radial basis functions

open access: yesStructural And Multidisciplinary Optimization, 2016
The performance of the sequential metamodel based optimization procedure depends strongly on the chosen building blocks for the algorithm, such as the used metamodeling method and sequential improvement criterion.
J. Havinga, A. H. Boogaard, G. Klaseboer
semanticscholar   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

A novel approach based on minimization for numerical solutions of Burgers’ equation

open access: yesPartial Differential Equations in Applied Mathematics
This paper deals with the numerical solution of Burgers’ equation. By using radial basis functions (RBFs), an optimization approach is used to derive the approximated solution.
Ahmad Jamal Shakir Almansor   +1 more
doaj   +1 more source

Numerical Solution of Linear Volterra Integral Equation Systems of Second Kind by Radial Basis Functions

open access: yesMathematics, 2022
In this paper we propose an approximation method for solving second kind Volterra integral equation systems by radial basis functions. It is based on the minimization of a suitable functional in a discrete space generated by compactly supported radial ...
Pedro González-Rodelas   +3 more
doaj   +1 more source

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