Results 21 to 30 of about 81,429 (302)

A foot structure study of new arch flexibility grading system based on three-dimensional arch volume

open access: yesChinese Journal of Traumatology, 2023
Purpose: Different arch structures may cause different foot function injuries. In the past, the arch structure and flexibility of the foot were often defined by the height of the arch, and there was no three-dimensional (3D) structure classification ...
Jun Liu   +6 more
doaj   +1 more source

Relativistic resistive magneto-hydrodynamics code for high-energy heavy-ion collisions

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
We construct a relativistic resistive magneto-hydrodynamic (RRMHD) numerical simulation code for high-energy heavy-ion collisions as a first designed code in the Milne coordinates. We split the system of differential equations into two parts, a non-stiff
Kouki Nakamura   +3 more
doaj   +1 more source

On overcoming Dahlquist’s second barrier for$A$-stable linear multistep methods [PDF]

open access: yesIranian Journal of Numerical Analysis and Optimization
Dahlquist’s second barrier limits the order of $A$-stable linear multistep methods to at most two, posing significant challenges for achieving higher accuracy in the numerical solution of stiff ordinary differential equations.
G. Hojjati, S. Fazeli, A. Moradi
doaj   +1 more source

Bedside test for estimating stiff index in mechanically ventilated ARDS patient: a pilot study

open access: yesThe Egyptian Journal of Bronchology, 2023
Stiff index is defined as the proportion of lung tissue elasticity in relation to chest wall elasticity to pertain to its cyclic tidal volume. It is meant to reflect the risk of overloading lung pressure.
E. Fatma   +5 more
doaj   +1 more source

Increasing stiffness promotes pulmonary retention of ligand-directed dexamethasone-loaded nanoparticle for enhanced acute lung inflammation therapy

open access: yesBioactive Materials, 2023
Inhaled nanoparticles (NPs) need to penetrate the bronchial mucosa to deliver drug payloads deeply in the lung for amplified local therapy. However, the bronchial mucociliary barrier eliminates NPs rapidly, which considerably limits their mucosal ...
Yinglan Yu   +5 more
doaj   +1 more source

Stiff systems of ordinary differential equations [PDF]

open access: yesThe Journal of the Australian Mathematical Society. Series B. Applied Mathematics, 1981
AbstractSolutions of the stiff system of linear differential equationsare obtained in a form yielding tight estimates of their properties, and conditions are obtained under which the operator norm of the map from r to the solution x does not become exponentially large for small values of ε.
Mahony, J. J., Shepherd, J. J.
openaire   +2 more sources

Time parallelization scheme with an adaptive time step size for solving stiff initial value problems

open access: yesOpen Mathematics, 2018
In this paper, we introduce a practical strategy to select an adaptive time step size suitable for the parareal algorithm designed to parallelize a numerical scheme for solving stiff initial value problems. For the adaptive time step size, a technique to
Bu Sunyoung
doaj   +1 more source

Cyclic response of K0-consolidated stiff clay under traffic loading

open access: yesYantu gongcheng xuebao, 2020
To study the effects of cyclic stress ratio and principle stress axis rotation on the undrained cyclic response characteristics of K0-consolidated stiff clay whose K0 is larger than 1, a series of traffic loading tests with a large number of cycles are ...
LIU Xu-ming 1, PAN Kun 2, YANG Zhong-xuan 1, CAI Yuan-qiang 1, 2
doaj   +1 more source

A Strongly A-Stable Time Integration Method for Solving the Nonlinear Reaction-Diffusion Equation

open access: yesAbstract and Applied Analysis, 2015
The semidiscrete ordinary differential equation (ODE) system resulting from compact higher-order finite difference spatial discretization of a nonlinear parabolic partial differential equation, for instance, the reaction-diffusion equation, is highly ...
Wenyuan Liao
doaj   +1 more source

Model of motion of a material point near two tangent paraboloids [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Математика. Механика. Информатика
The motion of a material point near a singularity of the type of two tangent surfaces is considered. The surfaces are located symmetrically with respect to a common tangent plane and have a common axis of rotation.
Burian, Sergey N.
doaj   +1 more source

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