Results 71 to 80 of about 5,089 (226)

The Huang–Yang Formula for the Low‐Density Fermi Gas: Upper Bound

open access: yesCommunications on Pure and Applied Mathematics, Volume 79, Issue 8, Page 1919-1972, August 2026.
ABSTRACT We study the ground state energy of a gas of spin 1/2$1/2$ fermions with repulsive short‐range interactions. We derive an upper bound that agrees, at low density ϱ$\varrho$, with the Huang–Yang conjecture. The latter captures the first three terms in an asymptotic low‐density expansion, and in particular the Huang–Yang correction term of order
Emanuela L. Giacomelli   +3 more
wiley   +1 more source

The Fast Fourier and Hilbert-Huang Transforms: A Comparison

open access: yesThe Proceedings of the Multiconference on "Computational Engineering in Systems Applications", 2006
The conversion of time domain data via the fast Fourier (FFT) and Hilbert-Huang (HHT) transforms is compared. The FFT treats amplitude vs. time information globally as it transforms the data to an amplitude vs. frequency description. The HHT is not constrained by the assumptions of stationarity and linearity, required for the FFT, and generates both ...
openaire   +2 more sources

Defensive Strategies and Handling Paths in Intimate Relationship Conflicts: A Dynamic Game Model From the Perspective of Emotional Regulation

open access: yesPsyCh Journal, Volume 15, Issue 4, August 2026.
ABSTRACT This study develops a dynamic game model of intimate relationship conflicts that incorporates emotion regulation mechanisms, translating cognitive reappraisal and expressive suppression into strategic parameters. The model simulates the dynamic evolution of defensive strategies and intervention paths, capturing the continuous interplay between
Yiwen Liu
wiley   +1 more source

Hilbert-Huang Transform; Data from Multimedia University Provide New Insights into Hilbert-Huang Transform [PDF]

open access: yes, 2013
According to news reporting from Melaka, Malaysia, by VerticalNews journalists, research stated, "This paper presents an emitted sound signal analysis technique for tool flank wear monitoring based on the Hilbert-Huang Transform (HHT)
J.E. Raja,
core  

Wheeze detection in the respiratory sounds using Hilbert-Huang transform [PDF]

open access: yes, 2014
Wheezes in the respiratory sounds are indicators for a number of diseases. Automatic detection of these signals -which have musical character and one or more dominant frequencies-is very important.
Omer Sayli, Sayli, Omer
core   +1 more source

Hilbert-Huang Transform Based Approach for Measurement of Voltage Flicker Magnitude and Frequency [PDF]

open access: yes, 2015
Voltage flicker is a non-stationary waveform for which direct spectral analysis is not appropriate. To overcome this difficulty, a Hilbert-Huang transform based technique is proposed here.
Ece, Dogan Gokhan   +2 more
core   +3 more sources

Detection and Classification of Double Line to Ground Faults in a 138 kV Six Phase Transmission Line Using Hilbert Huang Transform

open access: yesInternational Journal of Electrical Engineering and Applied Sciences, 2019
In this paper, Hilbert Huang transform based technique is introduced to detect and classify double line to ground faults in a 138 kV, 60 Hz, 68 km long six phase transmission line.
Gaurav Kapoor
doaj  

Research on improved modal parameter identification method using Hilbert-Huang transform

open access: yesMeasurement + Control, 2023
In the wind tunnel test, the full-bridge aeroelastic model needs to simulate both the shape and dynamic characteristics of the real bridge, and modal parameters are key dynamic parameters.
Mingjin Zhang   +4 more
doaj   +1 more source

Climate change and crop resilience: harnessing metabolomics for predicting stress tolerance

open access: yesNew Phytologist, Volume 251, Issue 3, Page 975-995, August 2026.
Summarised methodology for metabolite biomarker discovery and genomic targets selection for those metabolites to predict high‐throughput phenotypic and agronomic traits of interest for direct uptake in breeding programmes. Summary Global warming is driving climate change to levels not experienced since the advent of agriculture, primarily due to ...
Agyeya Pratap   +3 more
wiley   +1 more source

Induction Motor Multi-Fault Analysis Based on Intrinsic Mode Functions in Hilbert-Huang Transform [PDF]

open access: yes, 2009
This paper reports experimental studies to detect two faults in a 3-phase 1.5hp induction motor using intrinsic mode functions from Hilbert-Huang transform. The faults studied are the eccentricity of the air-gap between the rotor and stator and damage to
V. Sundararajan, Xin Xue
core   +1 more source

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