Results 181 to 190 of about 134,237 (204)

A Degradation Feature Extraction Method for Hydraulic Pumps Based Upon MUWDF and MF-DFA

Journal of Failure Analysis and Prevention, 2016
Hydraulic pump degradation feature extraction is a key step of condition-based maintenance. Since vibration signals of hydraulic pumps during degradation are strongly nonlinear and the feature information is too weak to be effectively extracted, a method based upon MUWDF and MF-DFA is proposed.
Jian Sun, Hongru Li, Baohua Xu
openaire   +1 more source

MULTIFRACTAL BEHAVIOUR IN OIL PRICES BY USING MF-DFA AND WTMM METHODS

2013
This study analyses the multifractal properties of the most prominent oil-related derivative which is ‘‘WTI’’ since the West Texas Intermediate grade of crude oil for delivery at Cushing, Oklahoma. To be able to test multifractality of the WTI prices, we used two different methodologies which are multifractal detrended fluctuation analysis (MF - DFA ...
Ayten, Kemal, Ünal, Gazanfer
openaire   +1 more source

The Use of MF-DFA Based on Multi-Fractal Theory in the Safety-Monitoring of Dam Seepage

Applied Mechanics and Materials, 2013
To ensure dam safety monitoring prediction accuracy ,How to determine correlation between the sequence of the entire dam safety monitoring at different time-range is one of the key contents of dam safety monitoring research. The paper takes a dam for example using multiple fractal MF-DFA to remove trend monitoring fluctuations of the original sequence ...
openaire   +1 more source

MULTIFRACTAL BEHAVIOUR IN GOLD PRICES BY USING MF-DFA AND WTMM METHODS

2013
In this paper, we investigate the multifractal features of a gold market which is known as the safe harbour in the face of political and economic chaos. We performed two different methodologies which are Multifractal Detrended Fluctuation Analysis (MF-DFA) and the Wavelet Transform Modulus Maxima (WTMM) in order to investigate the multifractality of ...
TERZİ, Feleknaz Dilek, ÜNAL, Gazanfer
openaire   +1 more source

MULTIFRACTAL BEHAVIOUR IN NATURAL GAS PRICES BY USING MF-DFA AND WTMM METHODS

2013
We make a comparative study of Multifractal Detrended Fluctuation Analysis (MF-DFA) and the Wavelet Transform Modulus Maxima (WTMM) method to detect multifractal character of natural gas daily returns. We give a brief introduction on above methods and compare their effectiveness.
TAŞ, Cumhur, ÜNAL, Gazanfer
openaire   +1 more source

The first di-D-fructofuranose 1,2′:2,3′-dianhydride hydrolase (DFA-IIIase) from the genus of non-Arthrobacter (pathogen Salmonella enterica subsp. enterica serovar Mbandaka): Molecular cloning, expression, identification, and characterization

Food Bioscience, 2023
Shuhuai Yu
exaly  

Nonlinear Analog Circuit Fault Diagnosis Based on MF-DFA Method

Journal of Computer-Aided Design & Computer Graphics, 2010
Jingyuan Tang, Yibing Shi, Wei Zhang, Longfu Zhou   +3 more
openaire   +1 more source

Efficiency of the Brazilian Bitcoin: A DFA Approach

International Journal of Financial Studies, 2020
Heloisa Burnquist, Derick Quintino, Paulo Ferreira   +2 more
exaly  

Effects of DFA IV in Rats: Calcium Absorption and Metabolism of DFA IV by Intestinal Microorganisms

Bioscience, Biotechnology and Biochemistry, 1999
Yasunori Yonejima, Tohru Hira, Hiroshi Hara   +2 more
exaly  

Metabolism of DFA III byArthrobactersp. H65-7: Purification and Properties of a DFA III Hydrolysis Enzyme (DFA IIIase)

Bioscience, Biotechnology and Biochemistry, 1997
Atsushi Yokota, Fusao Tomita
exaly