Results 21 to 30 of about 447,860 (319)
The EMM and the Spectral Analysis of a Non Self-adjoint Hamiltonian on an Infinite Dimensional Hilbert Space [PDF]
, 2016 The Equation of Motion Method is used in the spectral analysis of a non self-adjoint bosonic Hamiltonian acting on an infinite dimensional Hilbert space. The presented operator has real eigenvalues and can be diagonalized when it is expressed in terms of pseudo-bosons , which do not behave as ordinary bosons under the adjoint transformation, but obey ...
Natália Bebiano, João da Providência
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Time-varying spectral analysis on Hilbert spaces [PDF]
, 2016 Anne Margrete Nicolien van Delft
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Intermittency study of global solar radiation under a tropical climate: case study on Reunion Island
Scientific Reports, 2021 The arbitrary order Hilbert spectral analyses are applied to study the intermittency and multifractality of Global Horizonal Irradiation (GHI) based on one available high sampling rate of 1-year GHI records located at Saint-Denis (Moufia) over Reunion ...
Qi Li, Peng Li
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Радіоелектронні і комп'ютерні системи, 2023 The subject of this study is methods for improving the efficiency of semantic coding of speech signals. The purpose of this study is to develop a method for improving the efficiency of semantic coding of speech signals.
Oleksandr Lavrynenko +5 more
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Spectral denoising based on Hilbert–Huang transform combined with F-test
Frontiers in Chemistry, 2022 Due to the influence of uncontrollable factors such as the environment and instruments, noise is unavoidable in a spectral signal, which may affect the spectral resolution and analysis result.
Xihui Bian +8 more
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A novel, machine learning-based feature extraction method for detecting and localizing bearing component defects [PDF]
Metrology and Measurement Systems, 2022 Vibration analysis for conditional preventive maintenance is an essential tool for the industry. The vibration signals sensored, collected and analyzed can provide information about the state of an induction motor.
Bilal Djamal Eddine Cherif +2 more
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An Application of Hilbert-Huang Transform on the Non-Stationary Astronomical Time Series: The Superorbital Modulation of SMC X-1 [PDF]
Journal of Astronomy and Space Sciences, 2013 We present the Hilbert-Huang transform (HHT) analysis on the quasi-periodic modulation of SMC X-1. SMC X-1, consisting of a neutron star and a massive companion, exhibits superorbital modulation with a period varying between ~40 d and ~65 d. We applied
Chin-Ping Hu +4 more
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