Results 21 to 30 of about 618 (183)

Inner Multifractal Dynamics in the Jumps of Cryptocurrency and Forex Markets

Fractal and Fractional
Jump dynamics in financial markets exhibit significant complexity, often resulting in increased probabilities of subsequent jumps, akin to earthquake aftershocks. This study aims to understand these complexities within a multifractal framework.
Haider Ali, Muhammad Aftab, Faheem Aslam, Paulo Ferreira   +3 more
doaj   +2 more sources

Generating Synthetic Data Using 2D Multifractal Detrended Fluctuation Analysis Generative Adversarial Networks

IEEE Access
A novel 2-dimensional Multifractal Detrended Fluctuation Analysis (2D-MFDFA) as a discriminator for Generative Adversarial Networks (GAN) is presented in this work. The proposed approach demonstrates improved generated data quality at early iterations on
Charudatta Gurudas Korde, K. G. Shreeharsha, R. K. Siddharth, M. H. Vasantha, Y. B. Nithin Kumar   +4 more
doaj   +2 more sources

Estudo sobre o uso do Multifractal Detrended Fluctuation Analysis (MFDFA) como possível indicador de qualidade de previsões

, 2023
Economia e Finanças podem ser vistas como sistemas complexos, os quais são estudados desde 1600. Comportamentos complexos podem surgir de uma grande coleção de componentes simples, que não necessitam de um controle central, como, por exemplo: o estudo do
Fernandes, João Pedro
openaire   +2 more sources

Analysis of Indian Foreign Exchange Markets: A Multifractal Detrended Fluctuation Analysis (MFDFA) Approach

International Journal of Empirical Economics
The objectives of this paper are to analyse the presence of multifractality in daily exchange rates of the US dollar (USD), British Pound (GBP), Euro (EUR), and Japanese Yen (JPY) relative to the Indian Rupee (INR) for a specific period (1999–2018) and ...
Radhika Prosad Datta
doaj   +3 more sources

Removal of Dust Microelectric Signal Based on Empirical Mode Decomposition and Multifractal Detrended Fluctuation Analysis. [PDF]

Comput Intell Neurosci, 2021
Microcharge induction has recently been applied as a dust detection method. However, in complex environments, the detection device can be seriously polluted by noise. To improve the quality of the measured signal, the characteristics of both the signal and the noise should be analyzed so as to determine an effective noise removal method.
Li J, Sun Y, Cheng X.
europepmc   +2 more sources

Empirical Evidence for Extended Cognitive Systems. [PDF]

Cogn Sci, 2021
Abstract We present an empirically supported theoretical and methodological framework for quantifying the system‐level properties of person‐plus‐tool interactions in order to answer the question: “Are person‐plus‐tool‐systems extended cognitive systems?” Nineteen participants provided perceptual judgments regarding their ability to pass through ...
Favela LH, Amon MJ, Lobo L, Chemero A.
europepmc   +2 more sources

<p>Are Multifractal Dynamics of Electroencephalogram Signals from Multi Fractal Detrended Fluctuation Analysis (MFDFA) A Novel Approach to Extract Cognitive Flexibility Markers of Strategy and Rule Guessing in Human Science? A Comparative Approach Between MFDFA And Classic Fast-Fourier Transform</p>

Cognitive flexibility-the ability to adapt strategies and infer new rules-is crucial for navigating dynamic environments. However, traditional Electroencephalogram analysis methods, which often assume linearly and stationarity, may miss important features of brain dynamics.
Arina Potapenko
openaire   +2 more sources

Wrist accelerometer temporal analysis as a prognostic tool for aged care residents: A sub‐study of the ReMInDAR trial

Journal of the American Geriatrics Society, Volume 71, Issue 4, Page 1124-1133, April 2023., 2023
Abstract Background Objective measures for screening, prioritizing, and planning care for frail individuals are essential for appropriate aged care provision. This study evaluates metrics derived from actigraphy measures (captured by wrist accelerometer) as a digital biomarker to identify frail individuals at risk of adverse outcomes, including death ...
Andre Q. Andrade, Renly Lim, Thu‐Lan Kelly, Gaynor Parfitt, Nicole Pratt, Elizabeth E. Roughead   +5 more
wiley   +1 more source

Nonlinear Vibration Feature Recognition Method for Reciprocating Compressor Cylinder Based on VMD‐Multifractal Spectrum

Shock and Vibration, Volume 2023, Issue 1, 2023., 2023
The failure probability of piston ring abrasion occupies the forefront in reciprocating compressor cylinder assembly. Due to the reciprocating friction between the piston ring and cylinder liner, the local vibration signal contains typical nonstationary characteristics with a seriously overlapped frequency band of impact signals, while the different ...
Fengxia Lyu, Caiqian Xie, Fengfeng Bie, Xinting Miao, Yifan Wu, Ying Zhang, Erkan Oterkus   +6 more
wiley   +1 more source

A review of fault diagnosis, prognosis and health management for aircraft electromechanical actuators

IET Electric Power Applications, Volume 16, Issue 11, Page 1249-1272, November 2022., 2022
Abstract As More/All Electric Aircraft gradually become a research hotspot, electromechanical actuators (EMAs), which can directly convert electrical energy into mechanical energy, have gained more and more attention. However, since the reliability of EMA cannot meet the requirements of actual aircrafts, the practical application of EMA is severely ...
Zhengyang Yin, Niaoqing Hu, Jiageng Chen, Yi Yang, Guoji Shen   +4 more
wiley   +1 more source