Results 71 to 80 of about 8,751,367 (357)

A Lyapunov Function For Logistic Equation On Time Scales

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2018
In this study we focus on the stability of dynamic logistic equation which is used in single species population dynamics. Here we have introduced a quadratic Lyapunov function for generalized dynamic logistic equation on time scales.
Veysel Fuat Hatipoğlu
doaj   +1 more source

Dynamic Modeling and Solution of 6-DOF Parallel Mechanism

open access: yesIEEE Access, 2022
When a parallel robot used in a scene that requires force control, rapid attitude adjustment, or precise positioning, we need to know the dynamic characteristics of the moving platform and the motion branch, so it is necessary to do the dynamic analysis ...
Xuedong Jing, Cheng Li
doaj   +1 more source

Computational coarse graining of a randomly forced 1-D Burgers equation

open access: yes, 2007
We explore a computational approach to coarse graining the evolution of the large-scale features of a randomly forced Burgers equation in one spatial dimension. The long term evolution of the solution energy spectrum appears self-similar in time.
Frisch U.   +4 more
core   +1 more source

Autophagy in cancer and protein conformational disorders

open access: yesFEBS Letters, EarlyView.
Autophagy plays a crucial role in numerous biological processes, including protein and organelle quality control, development, immunity, and metabolism. Hence, dysregulation or mutations in autophagy‐related genes have been implicated in a wide range of human diseases.
Sergio Attanasio
wiley   +1 more source

Exponential P-stability of stochastic $\nabla$-dynamic equations on disconnected sets

open access: yesElectronic Journal of Differential Equations, 2015
The aim of this article is to consider the existence of solutions, finiteness of moments, and exponential p-stability of stochastic $\nabla$-dynamic equations on an arbitrary closed subset of $\mathbb{R}$, via Lyapunov functions.
Huu Du Nguyen   +2 more
doaj  

Asymptotic Convergence of the Solutions of a Dynamic Equation on Discrete Time Scales

open access: yes, 2012
The paper investigates a dynamic equation Δ𝑦(𝑡𝑛)=𝛽(𝑡𝑛)[𝑦(𝑡𝑛−𝑗)−𝑦(𝑡𝑛−𝑘)] for 𝑛→∞, where 𝑘 and 𝑗 are integers such that 𝑘>𝑗≥0, on an arbitrary discrete time scale 𝕋∶={𝑡𝑛} with 𝑡𝑛∈ℝ, 𝑛∈ℤ∞𝑛0−𝑘={𝑛0−𝑘,𝑛0 ...
J. Diblík   +3 more
semanticscholar   +1 more source

Hamiltonian equation of motion and depinning phase transition in two-dimensional magnets

open access: yes, 2012
Based on the Hamiltonian equation of motion of the $\phi^4$ theory with quenched disorder, we investigate the depinning phase transition of the domain-wall motion in two-dimensional magnets.
B. Zheng   +9 more
core   +1 more source

Protonophore activity of short‐chain fatty acids induces their intracellular accumulation and acidification

open access: yesFEBS Letters, EarlyView.
The protonated form of butyrate, as well as other short‐chain fatty acids (SCFAs), is membrane permeable. In acidic extracellular environments, this can lead to intracellular accumulation of SCFAs and cytosolic acidification. This phenomenon will be particularly relevant in acidic environments such as the large intestine or tumor microenvironments ...
Muwei Jiang   +2 more
wiley   +1 more source

A Force Method Model for Dynamic Analysis of Flat-Sag Cable Structures

open access: yesShock and Vibration, 2009
A new force method is proposed for analysing the dynamic behaviour of oscillating cables with small sags. The accepted dynamic model of such cables reduces to a partial differential equation (the equation of motion) and an integral equation (the ...
Xing Ma, John W. Butterworth
doaj   +1 more source

Analysis of Orbital Dynamic Equation in Navigation for a Mars Gravity-Assist Mission

open access: yes, 2012
Gravity Assist (GA) is a kind of transfer orbit technology widely used in interplanetary missions, which highly depends on navigation performance to succeed.
Xin Ma, X. Ning, Jiancheng Fang
semanticscholar   +1 more source

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