Results 31 to 40 of about 179,491,323 (208)

Detecting separate time scales in genetic expression data

open access: yesBMC Genomics, 2010
Background Biological processes occur on a vast range of time scales, and many of them occur concurrently. As a result, system-wide measurements of gene expression have the potential to capture many of these processes simultaneously.
Fink Thomas MA   +4 more
doaj   +1 more source

Adding a subjective dimension to an ICF-based disability measure for people with multiple sclerosis: development and use of a measure for perception of disabilities [PDF]

open access: yes, 2009
OBJECTIVE: The subjective dimension of disability, the perception of disability, is a dimension missing from the International Classification of Functioning, Disability and Health (ICF), and from health-related quality of life (HRQOL) instruments ...
Lok, W.S.   +7 more
core   +1 more source

Stability Analysis of a Damped Nonlinear Wave Equation [PDF]

open access: yesJournal of Applied and Computational Mechanics, 2020
The current manuscript is concerned with extracting an analytical approximate periodic solution of a damped cubic nonlinear Klein-Gordon equation. The Riemann-Liouville fractional calculus is utilized to obtain an analytic approximate solution.
Yusry O. El-Dib   +2 more
doaj   +1 more source

On the multiple scales perturbation method for difference equations [PDF]

open access: yes, 2007
In the classical multiple scales perturbation method for ordinary difference equations (O Delta Es) as developed in 1977 by Hoppensteadt and Miranker, difference equations (describing the slow dynamics of the problem) are replaced at a certain moment in ...
Van Horssen, W.T.   +5 more
core   +3 more sources

Testing the method of multiple scales and the averaging principle for model parameter estimation of quasiperiodic two time-scale models [PDF]

open access: yes, 2022
summary:Some dynamical systems are characterized by more than one time-scale, e.g. two well separated time-scales are typical for quasiperiodic systems.
Matonoha, Ctirad, Papáček, Štěpán
core   +1 more source

Multiple time scales of bank-full discharge in the Yellow River

open access: yesShui kexue jinzhan, 2012
Under the influence of climate changes,the hydrologic system has the characteristics of multiple time scales.The bank-full discharge,as a function of inflow conditions,also has the characteristics of multiple time scales.This phenomenon was studied based
ZHANG Yan-yan, ZHONG De-yu, WU Bao-sheng
doaj   +1 more source

Near scale-free dynamics in neural population activity of waking/sleeping rats revealed by multiscale analysis. [PDF]

open access: yesPLoS ONE, 2010
A neuron embedded in an intact brain, unlike an isolated neuron, participates in network activity at various spatial resolutions. Such multiple scale spatial dynamics is potentially reflected in multiple time scales of temporal dynamics. We identify such
Leonid A Safonov   +5 more
doaj   +1 more source

Nonlinear vibration and stability of a moving printing web with variable density based on the method of multiple scales

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2019
An axially moving printing web with variable density in a printing process causes a geometric nonlinear vibration, and a nonlinear vibration system is established using the von Karman nonlinear plate theory and the D’Alembert principle.
Mingyue Shao   +4 more
doaj   +1 more source

Metric Based Upscaling for Partial Differential Equations with a Continuum of Scales [PDF]

open access: yes, 2007
Numerical upscaling of problems with multiple scale structures have attracted increasing attention in recent years. In particular, problems with non-separable scales pose a great challenge to mathematical analysis and simulation.
Zhang, Lei
core   +1 more source

A Class of Shock Wave Solution to Singularly Perturbed Nonlinear Time-Delay Evolution Equations

open access: yesShock and Vibration, 2020
Nonlinear singularly perturbed problem for time-delay evolution equation with two parameters is studied. Using the variables of the multiple scales method, homogeneous equilibrium method, and approximation expansion method from the singularly perturbed ...
Yi-Hu Feng, Lei Hou
doaj   +1 more source

Home - About - Disclaimer - Privacy