Results 1 to 10 of about 108,820 (120)

Variable Step Hybrid Block Method for the Approximation of Kepler Problem

open access: yesFractal and Fractional, 2022
In this article, a variable step size strategy is adopted in formulating a new variable step hybrid block method (VSHBM) for the solution of the Kepler problem, which is known to be a rigid and stiff differential equation.
Joshua Sunday   +2 more
doaj   +1 more source

Variable Step Block Hybrid Method for Stiff Chemical Kinetics Problems

open access: yesApplied Sciences, 2022
Integration of a larger stiff system of initial value problems emerging from chemical kinetics models requires a method that is both efficient and accurate, with a large absolute stability region. To determine the solutions of the stiff chemical kinetics
Hira Soomro   +7 more
doaj   +1 more source

Arthroscopic capsular release and subacromial decompression for treatment of refractory posttraumatic frozen shoulder [PDF]

open access: yesThe Egyptian Orthopaedic Journal, 2019
IntroductionBony or soft tissue trauma to the shoulder can lead to a degree of posttraumatic stiffness or pain. The stiffness is due to a combination of capsular contracture and extracapsular adhesions.
Tarek Ghandour, Amr Abdelrahman
doaj   +1 more source

Auxetic mechanical metamaterials: from soft to stiff

open access: yesInternational Journal of Extreme Manufacturing, 2023
Auxetic mechanical metamaterials are artificially architected materials that possess negative Poisson’s ratio, demonstrating transversal contracting deformation under external vertical compression loading.
Xiang Li   +4 more
doaj   +1 more source

A Class of Hybrid Multistep Block Methods with A–Stability for the Numerical Solution of Stiff Ordinary Differential Equations

open access: yesMathematics, 2020
Recently, block backward differentiation formulas (BBDFs) are used successfully for solving stiff differential equations. In this article, a class of hybrid block backward differentiation formulas (HBBDFs) methods that possessed A –stability are ...
Zarina Bibi Ibrahim   +1 more
doaj   +1 more source

An Approximate Optimization Method for Solving Stiff Ordinary Differential Equations With Combinational Mutation Strategy of Differential Evolution Algorithm

open access: yesMendel, 2022
This paper examines the implementation of simple combination mutation of differential evolution algorithm for solving stiff ordinary differential equations.
Werry Febrianti   +2 more
doaj   +1 more source

Diabetes Mellitus Is an Independent Risk Factor for a Stiff Left Atrial Physiology After Catheter Ablation for Atrial Fibrillation

open access: yesFrontiers in Cardiovascular Medicine, 2022
BackgroundScar tissue formation after catheter ablation for atrial fibrillation (AF) may adversely affect the diastolic properties of the left atrium (LA), which can result in a stiff LA physiology in a small proportion of patients.
Moon-Hyun Kim   +6 more
doaj   +1 more source

Genomic variation within the maize stiff‐stalk heterotic germplasm pool

open access: yesThe Plant Genome, 2021
The stiff‐stalk heterotic group in Maize (Zea mays L.) is an important source of inbreds used in U.S. commercial hybrid production. Founder inbreds B14, B37, B73, and, to a lesser extent, B84, are found in the pedigrees of a majority of commercial seed ...
Nolan Bornowski   +21 more
doaj   +1 more source

Optimizing the Coefficients of Numerical Differentiation Formulae Using Neural Networks

open access: yesIEEE Access, 2021
The use of a numerical differentiation formula (NDF) is an excellent method for solving stiff ordinary differential equations. However, the NDF method cannot fully adapt to all stiff systems.
Xinyu Yang   +3 more
doaj   +1 more source

Numerical modeling of wastewater treatment using HOLLOW fiber membrane contactors based on the stiff spring method

open access: yesSouth African Journal of Chemical Engineering, 2022
In this study the efficiency of a porous HOLLOW fiber membrane module (PHFMM) was studied using a simple and generic method. Stiff spring method (SSM) was applied in order to solve two-dimensional transient model equations of transport of diluted species
Seyed Jalil Poormohamadian   +3 more
doaj   +1 more source

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