Results 11 to 20 of about 339,262 (287)

Time Window Determination for Inference of Time-Varying Dynamics: Application to Cardiorespiratory Interaction

open access: yesFrontiers in Physiology, 2020
Interacting dynamical systems abound in nature, with examples ranging from biology and population dynamics, through physics and chemistry, to communications and climate.
Dushko Lukarski   +5 more
doaj   +1 more source

Qualitative Analysis of a Hyperchaotic Lorenz-Stenflo Mathematical Model via the Caputo Fractional Operator

open access: yesJournal of Function Spaces, 2022
The Lorenz-Stenflo mathematical model describes a complex dynamical behavior related to atmospheric acoustic-gravity waves. In this study, qualitative analysis of the four-dimensional hyperchaotic Lorenz-Stenflo system via the Caputo fractional ...
Chernet Tuge Deressa   +3 more
doaj   +1 more source

Metapopulation dynamics of a persisting predator–prey system in the laboratory: time series analysis [PDF]

open access: yesExperimental & Applied Acarology, 1997
The scarcity of experimental evidence for the persistence of predator–prey systems at the metapopulation level inspired us to develop a simple predator–prey experiment that could be used for testing several theoretical predictions concerning persistence and its causes.
Janssen, A.   +4 more
openaire   +3 more sources

A distance-based dynamical transition analysis of time series signals and application to biological systems [PDF]

open access: yesJournal of Biological Physics, 2011
This study demonstrates an application of distance-based numerical measures to the phase space of time series signals, in order to obtain a temporal analysis of complex dynamical systems. This method is capable of detecting alterations appearing in the characters of the deterministic dynamical systems and provides a simple tool for the real-time ...
Serkan, Alagoz, Baris Baykant, Alagoz
openaire   +2 more sources

ANALYSIS OF TIME SERIES RECONSTRUCTION FOR DYNAMIC SYSTEM

open access: yesActa Physica Sinica, 1996
The topological properties of the delay-time reconstruction transformation of dynamic system are analysed by means of the Jacobian of the transformation. Results show that the topological properties depend not only on the reconstructing dimension, but also on the delay time, and on the conditional stability of a time series itself.
null YANG ZHI-AN   +2 more
openaire   +1 more source

Thermodynamic time asymmetry in nonequilibrium fluctuations [PDF]

open access: yes, 2007
We here present the complete analysis of experiments on driven Brownian motion and electric noise in a $RC$ circuit, showing that thermodynamic entropy production can be related to the breaking of time-reversal symmetry in the statistical description of ...
A Petrosyan   +15 more
core   +3 more sources

A New Recurrence-Network-Based Time Series Analysis Approach for Characterizing System Dynamics

open access: yesEntropy, 2019
In this paper, a novel analysis method based on recurrence networks is proposed to characterize the evolution of dynamical systems. Through phase space reconstruction, a time series was transformed into a high-dimensional recurrence network and a ...
Guangyu Yang, Daolin Xu, Haicheng Zhang
doaj   +1 more source

Nonstationary time-series analysis applied to investigation of brainstem system dynamics

open access: yesIEEE Transactions on Biomedical Engineering, 2000
Previous investigations of the dynamic organization of the lower brainstem and its relation to peripheral and other central nervous systems were predominantly performed by linear methods. These are based on time-averaging algorithms, which merely can be applied to stationary signal intervals.
Vandenhouten, Ralf   +3 more
openaire   +2 more sources

Time series analysis of daily reported number of new positive cases of COVID-19 in Japan from January 2020 to February 2023.

open access: yesPLoS ONE, 2023
This study investigated temporal variations of the COVID-19 pandemic in Japan using a time series analysis incorporating maximum entropy method (MEM) spectral analysis, which produces power spectral densities (PSDs). This method was applied to daily data
Ayako Sumi
doaj   +1 more source

Emergent Properties of Land Systems: Nonlinear Dynamics of Scottish Farming Systems from 1867 to 2020

open access: yesLand, 2021
Dynamics of arable and pastoral farming systems in Scotland over the period 1867–2020 are documented using time series analysis methods, including for nonlinear dynamical systems. Results show arable and pastoral farming, at a national scale, are dynamic
Richard Aspinall   +2 more
doaj   +1 more source

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