Results 1 to 10 of about 1,124 (201)

Nonstandard Finite Difference Method Applied to a Linear Pharmacokinetics Model [PDF]

open access: yesBioengineering, 2017
We extend the nonstandard finite difference method of solution to the study of pharmacokinetic–pharmacodynamic models. Pharmacokinetic (PK) models are commonly used to predict drug concentrations that drive controlled intravenous (I.V.) transfers (or ...
Oluwaseun Egbelowo   +2 more
doaj   +8 more sources

Nonstandard finite difference method for solving complex-order fractional Burgers’ equations [PDF]

open access: yesJournal of Advanced Research, 2020
The aim of this work is to present numerical treatments to a complex order fractional nonlinear one-dimensional problem of Burgers’ equations. A new parameter σt is presented in order to be consistent with the physical model problem.
N.H. Sweilam   +2 more
doaj   +6 more sources

Accelerated nonstandard finite difference method for singularly perturbed Burger-Huxley equations [PDF]

open access: yesBMC Research Notes, 2021
Objective The main purpose of this paper is to present an accelerated nonstandard finite difference method for solving the singularly perturbed Burger-Huxley equation in order to produce more accurate solutions.
Masho Jima Kabeto, Gemechis File Duressa
doaj   +5 more sources

Nonstandard Finite Difference Schemes for an SIR Epidemic Model

open access: yesMathematics, 2021
This paper aims to present two nonstandard finite difference (NFSD) methods to solve an SIR epidemic model. The proposed methods have important properties such as positivity and boundedness and they also preserve conservation law.
Mohammad Mehdizadeh Khalsaraei   +3 more
doaj   +4 more sources

Nonstandard finite difference method for solving the multi-strain TB model

open access: yesJournal of the Egyptian Mathematical Society, 2017
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
N H Sweilam, Seham M Al-Mekhlafi
exaly   +3 more sources

Some standard and nonstandard finite difference schemes for a reaction–diffusion–chemotaxis model

open access: yesOpen Physics, 2023
Two standard and two nonstandard finite difference schemes are constructed to solve a basic reaction–diffusion–chemotaxis model, for which no exact solution is known.
de Waal Gysbert Nicolaas   +2 more
doaj   +2 more sources

Variance-Guided Regression for Heteroscedastic Data With a Grouping-Based Extension for Nonlinear Prediction. [PDF]

open access: yesStat Med
ABSTRACT Although homoscedasticity is often assumed in linear regression, real data may show variance patterns or residual structures that violate this assumption. We propose VarGuid, a variance‐guided framework for two related settings: Covariate‐dependent conditional variance under a global linear mean model, and residual nonlinear mean structure ...
Liu S, Lu M.
europepmc   +2 more sources

A Positivity-Preserving Improved Nonstandard Finite Difference Method to Solve the Black-Scholes Equation

open access: yesMathematics, 2022
In this paper, we evaluate and discuss different numerical methods to solve the Black–Scholes equation, including the θ-method, the mixed method, the Richardson method, the Du Fort and Frankel method, and the MADE (modified alternating directional ...
Mohammad Mehdizadeh Khalsaraei   +4 more
doaj   +3 more sources

Input Layer Regularization and Automated Regularization Hyperparameter Tuning for Myelin Water Estimation Using Deep Learning. [PDF]

open access: yesNMR Biomed
We propose a novel deep learning algorithm for predicting the myelin water fraction from multiple gradient‐echo or spin‐echo pulse sequences arising in magnetic resonance relaxometry (MRR) measurements of the human brain. Our method incorporates both regularized nonlinear least squares and pure deep learning through a concatenation paradigm known as ...
Modi M   +7 more
europepmc   +2 more sources

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