Results 41 to 50 of about 1,024,930 (374)

Three-Dimensional Reconstruction of the Right Ventricle from a Radial Basis Morphing of the Inner Surface

Computation
In the realm of cardiac health research, accurate fluid dynamics simulations are vital for comprehending the heart function and diagnosing conditions. Central to these simulations is the precision of ventricular wall meshes used to model heart geometry ...
Carlotta Fontana, Nicola Cappetti
doaj   +1 more source

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

Mathematics, 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

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

Mathematics, 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, Miguel Pasadas, Abdelouahed Kouibia, Basim Mustafa   +3 more
doaj   +1 more source

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

FEBS 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, Carolin Ector, Hanspeter Herzel   +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)

REM: 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, Jorge Kazuo Yamamoto   +1 more
doaj   +1 more source

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

Química 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, João C. de Andrade, Ronei J. Poppi, Cesar Mello   +3 more
doaj   +1 more source

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

Mathematics, 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, Hasan M. H. Idais, Mohammed Yasin, Miguel Pasadas   +3 more
doaj   +1 more source

Error estimates for interpolation of rough data using the scattered shifts of a radial basis function

, 2007
The error between appropriately smooth functions and their radial basis function interpolants, as the interpolation points fill out a bounded domain in R^d, is a well studied artifact. In all of these cases, the analysis takes place in a natural function
F.J. Narcowich, G.J.O. Jameson, J. Levesley, J. Yoon, J. Yoon, R. A. Brownlee, R. Brownlee, W.A. Light, W.A. Light   +8 more
core   +1 more source

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

Structural 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

Strength through diversity: how cancers thrive when clones cooperate

Molecular Oncology, EarlyView.
Intratumor heterogeneity can offer direct benefits to the tumor through cooperation between different clones. In this review, Kuiken et al. discuss existing evidence for clonal cooperativity to identify overarching principles, and highlight how novel technological developments could address remaining open questions.
Marije C. Kuiken, Maartje Witsen, Emile E. Voest, Krijn K. Dijkstra   +3 more
wiley   +1 more source