Results 91 to 100 of about 36,269 (184)

In Situ/Operando Probing of Dynamic Phase Structures of Alumina‐Supported Ultrasmall Copper‐Gold Alloy Nanoparticles Under Reaction Conditions

Angewandte Chemie, Volume 137, Issue 32, August 4, 2025.
Supported ultrasmall copper‐gold alloy nanoparticles are active heterogenous catalysts. In situ TEM tracking under oxygen at different temperatures reveals atomic‐scale dynamic phase structures, whereas combined operando synchrotron HE‐XRD and DRIFTS characterizations uncover ensemble‐averaged ordering/disordering phase structures and oscillatory ...
Han‐Wen Cheng, Jing Li, Shiyao Shan, Xiaowei Lv, Guanyu Chen, Merry Madiou, Dong Dinh, Seyed Danial Mousavi, Zhi‐Peng Wu, Shan Wang, Yazan Maswadeh, Valeri Petkov, Susan Lu, Ke Pei, Wenbin You, Renchao Che, Chuan‐Jian Zhong   +16 more
wiley   +1 more source

Operation of the Hilbert-Huang Transform: basic overview with examples [PDF]

, 2013
This learning object provides a simple explanation of the operation of the Hilbert-Huang transform. This is a tool which has been employed with success in the signal processing field and, more especifically, in the analysis of non-stationary signals. The
Antonino Daviu, José Alfonso
core  

Estimation of starting times of quasinormal modes in ringdown gravitational waves with the Hilbert-Huang transform

, 2017
It is known that a quasinormal mode (QNM) of a remnant black hole dominates a ringdown gravitational wave (GW) in a binary black hole (BBH) merger. To study properties of the QNMs, it is important to determine the time when the QNMs appear in a GW signal
Kaneyama, Masato, Nakano, Hiroyuki, Oohara, Ken-ichi, Sakai, Kazuki, Takahashi, Hirotaka   +4 more
core   +1 more source

On Midrange Periodicities in Solar Radio Flux and Sunspot Areas

, 2018
Using the Hilbert-Huang transform technique, we investigate the midrange periodicities in solar radio flux at 2800 MHz (F10.7) and sunspot areas (SAs) from February 1, 1947 to September 30, 2016.
Deng, Hui, Mei, Ying, Wang, Feng
core   +1 more source

Retracted: Analysis of Bioelectrical Impedance Spectrum for Elbow Stiffness Based on Hilbert-Huang Transform. [PDF]

Contrast Media Mol Imaging, 2023
Imaging CMM.
europepmc   +1 more source

基于振动信号诊断齿轮断齿故障新方法

Jixie chuandong, 2012
According to the nonstationarity and nonlinearity of the broken teeth fault of gear,the Hilbert-Huang transform is employed.Firstly,the a series of Intrinsic Mode Functions（IMFs） are obtained by the Empirical Mode Decomposition （EMD）method.Secondly,the ...
严作堂, 陈宏
doaj  

Chirplet Analysis of Speech Signals Based on the Hilbert–Huang Transform

Кібернетика та комп'ютерні технології
Introduction. This article proposes a novel approach to speech signal analysis based on the chirplet transform, which integrates the Hilbert – Huang transform with chirplet analysis.
Ihor Bezverbnyi
doaj   +1 more source

Intermittency measurement in two dimensional bacterial turbulence

, 2016
In this paper, an experimental velocity database of a bacterial collective motion , e.g., \textit{B. subtilis}, in turbulent phase with volume filling fraction $84\%$ provided by Professor Goldstein at the Cambridge University UK, was analyzed to ...
Chen, Ming, Ding, Long, Huang, Yongxiang, Liu, Yulu, Lu, Zhiming, Qiu, Xiang, Zhou, Quan   +6 more
core   +1 more source

Comparison of Different Time-Frequency Analyses Techniques Based on sEMG-Signals in Table Tennis: A Case Study

International Journal of Computer Science in Sport, 2018
The surface EMG signal in the action of dynamic contraction has more movement interference compared to sustained static contractions. In addition, the recruitment and de-recruitment of motor units causes a faster change in the surface EMG signal’s ...
Lin B., Wong S. F., Baca A.
doaj   +1 more source

Hilbert‐Huang Transform Analysis of Hydrological and Environmental Time Series [PDF]

, 2009
Tom Burr
openalex   +1 more source