scholarly journals Generating signals with multiscale time irreversibility: The asymmetric weierstrass function

Complexity ◽  
2010 ◽  
Vol 16 (4) ◽  
pp. 29-38 ◽  
Author(s):  
Anton Burykin ◽  
Madalena D. Costa ◽  
Chung-Kang Peng ◽  
Ary L. Goldberger ◽  
Timothy G. Buchman
Keyword(s):  
Weierstrass Function ◽  
Time Irreversibility ◽  
Multiscale Time Irreversibility

Multiscale time irreversibility: Is it useful in the analysis of human gait?

2018 ◽  
Vol 39 ◽  
pp. 431-434 ◽  
Author(s):  
J. Naranjo Orellana ◽  
A. Sanchez Sixto ◽  
B. De La Cruz Torres ◽  
E. Sarabia Cachadiña ◽  
P. Floria Martín ◽  
...  
Keyword(s):  
Human Gait ◽  
Time Irreversibility ◽  
Multiscale Time Irreversibility

scholarly journals The lack of reversibility during financial crisis and its identification

2021 ◽  
Vol 107 ◽  
pp. 03002
Author(s):  
Andrii Bielinskyi ◽  
Serhii Hushko ◽  
Andriy Matviychuk ◽  
Oleksandr Serdyuk ◽  
Serhiy Semerikov ◽  
...  
Keyword(s):  
Time Series ◽  
Stock Markets ◽  
Permutation Patterns ◽  
Financial Systems ◽  
Fundamental Idea ◽  
Nonlinear Properties ◽  
Time Irreversibility ◽  
Non Gaussian ◽  
Multiscale Time Irreversibility ◽  
Over Time

The focus of this study to measure the varying irreversibility of stock markets. A fundamental idea of this study is that financial systems are complex and nonlinear systems that are presented to be non-Gaussian fractal and chaotic. Their complexity and different aspects of nonlinear properties, such as time irreversibility, vary over time and for a long-range of scales. Therefore, our work presents approaches to measure the complexity and irreversibility of the time series. To the presented methods we include Guzik’s index, Porta’s index, Costa’s index, based on complex networks measures, Multiscale time irreversibility index and based on permutation patterns measures. Our study presents that the corresponding measures can be used as indicators or indicator-precursors of crisis states in stock markets.

Multiscale time irreversibility of heart rate and blood pressure variability during orthostasis

2012 ◽  
Vol 33 (10) ◽  
pp. 1747-1756 ◽  
Author(s):  
L Chladekova ◽  
B Czippelova ◽  
Z Turianikova ◽  
I Tonhajzerova ◽  
A Calkovska ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Heart Rate ◽  
Blood Pressure Variability ◽  
Time Irreversibility ◽  
Multiscale Time Irreversibility

scholarly journals Time Irreversibility from Time Series for Analyzing Oil-in-Water Flow Transition

2016 ◽  
Vol 2016 ◽  
pp. 1-10
Author(s):  
Du Meng ◽  
Chen Xiao-yan ◽  
Liu Hong-ying ◽  
He Qing ◽  
Bai Rui-xiang ◽  
...  
Keyword(s):  
Flow Pattern ◽  
Two Phase Flow ◽  
Phase Flow ◽  
Vertical Pipe ◽  
Two Phase ◽  
Pattern Dynamics ◽  
Oil In Water ◽  
Flow Pattern Transition ◽  
Time Irreversibility ◽  
Multiscale Time Irreversibility

We first experimentally collect conductance fluctuation signals of oil-in-water two-phase flow in a vertical pipe. Then we detect the flow pattern asymmetry character from the collected signals with multidimensional time irreversibility and multiscale time irreversibility index. Moreover, we propose a novel criterion, that is, AMSI (average of multiscale time irreversibility), to quantitatively investigate the oil-in-water two-phase flow pattern dynamics. The results show that AMSI is sensitive to the flow pattern evolution that can be used to predict the flow pattern transition and bubble coalescence.

MULTISCALE ENTROPY AND MULTISCALE TIME IRREVERSIBILITY ANALYSIS OF RR TIME SERIES DEPENDING ON AMBIENT TEMPERATURE

2020 ◽  
Vol 20 (05) ◽  
pp. 2050029
Author(s):  
ORIOL ABELLÁN-AYNÉS ◽  
JOSE NARANJO-ORELLANA ◽  
PEDRO MANONELLES ◽  
FERNANDO ALACID
Keyword(s):  
Sample Entropy ◽  
Reliable Data ◽  
Multiscale Entropy ◽  
Healthy Population ◽  
Short Term ◽  
Physically Active ◽  
Influence Of Temperature On ◽  
Time Irreversibility ◽  
Multiscale Time Irreversibility ◽  
Cool Conditions

Purpose: The main aim of this paper is to study the influence of temperature on multiscale entropy (MSE) and multiscale time irreversibility (MTI) through the use of short-term measurements. Methods: A total of 12 physically active, healthy, and nonsmoker individuals ([Formula: see text] years old; [Formula: see text][Formula: see text]cm of height; and [Formula: see text][Formula: see text]kg of body mass) voluntarily participated in this study. Two beat-to-beat recordings of 15[Formula: see text]min length were performed on every participant, one under hot conditions ([Formula: see text]C) and the other assessment under cool conditions ([Formula: see text]C). The order of these two assessments was randomly assigned. Multiscale sample entropy and MTI were assessed in every measurement through 10 scales. Results: Entropy was significantly higher under hot conditions ([Formula: see text]) from the fifth scale compared to cool conditions. On the contrary, MTI values were significantly lower under hotter conditions ([Formula: see text]). Conclusions: The study of MSE and time irreversibility of short RR measurements presents consistent and reliable data. Moreover, exposures to hot conditions provoke an increment of interbeat complexity throughout larger scales and a decrease in the MTI in a healthy population.

Sign in / Sign up

Export Citation Format

Share Document