Results 71 to 80 of about 35,860 (209)

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

Extreme-Point Symmetric Mode Decomposition Method for Data Analysis

, 2013
An extreme-point symmetric mode decomposition (ESMD) method is proposed to improve the Hilbert-Huang Transform (HHT) through the following prospects: (1) The sifting process is implemented by the aid of 1, 2, 3 or more inner interpolating curves, which ...
Li, Zong-Jun, Wang, Jin-Liang
core   +1 more source

Broadband Seismic Source Characterization Based on Composite Source Time Functions: A Case Study of the 2022 Luding Earthquake

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract Obtaining broadband ground motion simulations consistent with observed records is essential for seismic modeling, and the key to achieving this lies in a physically reasonable source representation. Only a scientifically constrained broadband source can effectively generate broadband ground motions.
Wenjing Wang, Hong Zhou, Yanan Li, Weijin Xu   +3 more
wiley   +1 more source

IRIS RECOGNITION BASED ON HILBERT–HUANG TRANSFORM

Advances in Adaptive Data Analysis, 2009
As a reliable approach for human identification, iris recognition has received increasing attention in recent years. This paper proposes a new analysis method for iris recognition based on Hilbert–Huang transform (HHT). We first divide a normalized iris image into several subregions.
Zhijing Yang, Zhihua Yang, Lihua Yang
openaire   +1 more source

Imprint of the Quasi‐Biennial Oscillation on the Ionosphere and Thermosphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The Quasi‐Biennial Oscillation (QBO) is a dominant mode of stratospheric variability and is known to modulate the variability of the ionosphere‐thermosphere (IT) system. However, the extent of its influence on the ionosphere‐thermosphere system remains uncertain due to weak signals and confounding with similar periodicities in solar flux.
D. Singh, L. P. Goncharenko, S. R. Zhang
wiley   +1 more source

Cutting force response in milling of Inconel: analysis by wavelet and Hilbert-Huang Transforms

Latin American Journal of Solids and Structures
We study the milling process of Inconel. By continuously increasing the cutting depth we follow the system response and appearance of oscillations of larger amplitude.
Grzegorz Litak, Krzysztof Kecik, Rafal Rusinek   +2 more
doaj   +1 more source