Results 61 to 70 of about 35,758 (162)

Bearing Health monitoring based on Hilbert-Huang Transform, Support Vector Machine and Regression.

, 2014
International audienceThe detection, diagnostic and prognostic of bearing degradation play a key role in increasing the reliability and safety of electrical machines especially in key industrial sectors.
Medjaher, Kamal, Soualhi, Abdenour, Zerhouni, Noureddine   +2 more
core   +4 more sources

The Phase‐Amplitude Coupling Induced by Drug Cues in Individuals With Methamphetamine Use Disorder During Withdrawal

Brain and Behavior, Volume 16, Issue 4, April 2026.
Whole‐brain PAC and directed PSI analyses during a drug‐cue task in abstinent patients with methamphetamine use disorder revealed that drug‐related stimuli enhanced prefrontal and centro‐parietal PAC but disrupted top–down information flow from prefrontal to occipital regions.
Yu Tian, Yaqi Zhang, Yongxin Cheng, Juan Wang, Yuxin Ma, Yimiao Li, Jinliang Liu, Dingming Chang, Ting Xue, Kai Yuan, Gengdi Huang, Dahua Yu, Yanxue Xue, Fang Dong   +13 more
wiley   +1 more source

Ninja data analysis with a detection pipeline based on the Hilbert-Huang Transform

, 2009
The Ninja data analysis challenge allowed the study of the sensitivity of data analysis pipelines to binary black hole numerical relativity waveforms in simulated Gaussian noise at the design level of the LIGO observatory and the VIRGO observatory.
Alexander Stroeer, Aylott B, Huang N, Husa S, Jordan Camp, McNabb J, Pretorius F, Pretorius F, Rezzolla L, Scheel M A, Sigg D, Stroeer A Camp J Cannizzo J Gagarin N   +11 more
core   +2 more sources

Time-frequency representation of earthquake accelerograms and inelastic structural response records using the adaptive chirplet decomposition and empirical mode decomposition [PDF]

, 2007
In this paper, the adaptive chirplet decomposition combined with the Wigner-Ville transform and the empirical mode decomposition combined with the Hilbert transform are employed to process various non-stationary signals (strong ground motions and ...
A. Giaralis, Baraniuk, Boashash, Boashash, Burrus, Chen, Cohen, Flandrin, Gabor, Huang, Huang, Kijewski-Correa, Loh, Mallat, Mallat, Mann, N.P. Politis, Ohtori, Olhede, P.D. Spanos, Qian, Qian, Spanos, Spencer, Wang, Xu, Yan, Yang, Yin, Zhang, Zhang, Zhang   +31 more
core   +1 more source

Prognostics and Health Management in Polymer Electrolyte Fuel Cells: Current Trends, Challenges, and Future Directions

Fuel Cells, Volume 26, Issue 2, April 2026.
ABSTRACT Prognostics and health management are crucial for the reliability and lifetime assessment of polymer electrolyte fuel cells (PEFCs). Here, we review the current advances on this topic, focusing mainly on key degradation mechanisms and methodologies such as physics‐aware, data‐driven, and hybrid modeling approaches.
Farideh Abdollahi, Kourosh Malek, Thomas Kadyk, Nadiia Kulyk, Christophe Gerling, Michael H. Eikerling   +5 more
wiley   +1 more source

Humidity's influence on visible region refractive index structure parameter $C_n^2$ [PDF]

, 2006
In the infrared and visible bandpass, optical propagation theory conventionally assumes that humidity does not contribute to the effects of atmospheric turbulence on optical beams. While this assumption may be reasonable for dry locations, we demonstrate
Andreas, Beaumont, Chang, Clifford, Davidson, Doss-Hammel, Font, Font, Frederickson, Huang, Kunz, Ochs, Oh, Oh, Roddier   +14 more
core   +2 more sources

Diverse Seasonal Patterns of Precipitation and Terrestrial Water Storage Over the Indochina Peninsula: Roles of Monsoons, ENSO, and Topography

Hydrological Processes, Volume 40, Issue 4, April 2026.
Warm ENSO phase events weaken Asian monsoons, reducing precipitation and TWS in northern and southern ICP, while central ICP's bowl‐shaped topography increases TWS. Seasonally, the Indian Monsoon brings abundant rainfall during May–September, which lags into TWS by 2 months.
Qing He, Hok Sum Fok, Zhongtian Ma, Bastien Dieppois, Vagner Ferreira   +4 more
wiley   +1 more source

Arbitrary-order Hilbert spectral analysis and intermittency in solar wind density fluctuations [PDF]

, 2002
The properties of inertial and kinetic range solar wind turbulence have been investigated with the arbitrary-order Hilbert spectral analysis method, applied to high-resolution density measurements.
Carbone, Francesco, Sorriso-Valvo, Luca, Alberti, Tommaso, Lepreti, Fabio, Chen, Christopher H. K., Nemecek, Zdenek, Safrankova, Jana   +6 more
core   +3 more sources

Hitchhiker's Guide to the Swampland: The Cosmologist's Handbook to the String‐Theoretical Swampland Programme

Fortschritte der Physik, Volume 74, Issue 4, April 2026.
Abstract String theory has strong implications for cosmology, implying the absence of a cosmological constant, ruling out single‐field slow‐roll inflation, and that black holes decay. The origins of these statements are elucidated within the string‐theoretical swampland programme.
Kay Lehnert
wiley   +1 more source

Comparison of methods for the identification of mesoscale wind speed fluctuations

Meteorologische Zeitschrift, 2017
Mesoscale wind speed fluctuations influence the characteristics of offshore wind energy. These recurring wind speed changes on time scales between tens of minutes and six hours lead to power output fluctuations. In order to investigate the meteorological
Anna Rieke Mehrens, Lueder von Bremen
doaj   +1 more source