Ergodicity and fourth-order spectral moments [PDF]
IEEE Transactions on Information Theory, 1997 Summary: Relationships between ergodicity and structures of fourth-order spectral moments are investigated. In particular, it is shown that second-order ergodicity of a random process is directly related to the distribution of these moments on the normal manifolds of the frequency domain. This result is illustrated by various examples.
PICINBONO, Bernard
exaly +5 more sources
Spectral meta-moments reveal hidden signatures of vortex pulses [PDF]
EPJ Web of Conferences, 2019 Ultrashort vortex pulses possess specific spatio-spectral signatures due to Gouy phase shift. Helical movement of anomalies around the phase singularity was found which is referred to as spectral Gouy rotation. The analysis of spectral moments allows for
Liebmann Max +6 more
doaj +3 more sources
On the skew spectral moments of graphs [PDF]
Transactions on Combinatorics, 2017 Let $G$ be a simple graph, and $G^{sigma}$ be an oriented graph of $G$ with the orientation $sigma$ and skew-adjacency matrix $S(G^{sigma})$. The $k-$th skew spectral moment of $G^{sigma}$, denoted by $T_k(G^{sigma})$, is defined as $sum_ ...
Fatemeh Taghvaee +1 more
doaj +3 more sources
SPECTRAL MOMENTS OF FRICATIVE CONSONANTS IN SERBIAN (AN ACCOUNT OF FEMALE SPEAKERS’ PRODUCTION) [PDF]
Filolog, 2020 This paper deals with the measurement of spectral moments of Serbian fricatives. The four spectral moments: centre of gravity, spectral variance, skewness, and kurtosis were measured at the onset of the fricative, on the stable-state part and at the ...
Borivoje Petrović
doaj +2 more sources
Fault Identification in Membrane Structures Using the Hilbert Transforms
Sensors, 2022 Fault diagnostics present a crucial technical issue in the areas of both the condition monitoring of machines and the monitoring of structural health. The identification of faults at an early stage in their development has an immense effect on the safety
Aleksandra Waszczuk-Młyńska +2 more
doaj +1 more source
On a class of approximate formulas for total ח-electron energy of benzenoid hydrocarbons [PDF]
Journal of the Serbian Chemical Society, 2001 The method for obtaining approximate formulas of the (n, m)-type for the total -electron energy of benzenoid hydrocarbons (communicated in J. Serb. Chem. Soc. 54 (1989) 189) is simplified and extended so as to include arbitrary spectral moments.
Gutman Ivan, Soldatović Tanja
doaj +1 more source
Application of spectral graph theory on the enthalpy change of formation of acyclic saturated ketones [PDF]
Journal of the Serbian Chemical Society, 2018 The dependence of the enthalpy change of formation of saturated acyclic ketones on molecular structure (the number of carbon atoms, the position of the carbonyl group, and the branching of the molecules) was investigated.
Gligorijević Ana +3 more
doaj +1 more source
Spectral moments of correlated Wishart matrices [PDF]
Physical Review E, 2005 12 revtex pages + 6 eps ...
Burda, Zdzislaw +2 more
openaire +3 more sources
Analytical Study on the Random Seismic Responses of an Asymmetrical Suspension Structure
Buildings, 2023 An asymmetrical suspension structure, without vertical column support and without supplying the flexibility of spatial arrangement, is more sensitive to ground movement. The structural responses of an asymmetrical suspension structure subjected to Clough–
Min Chen +4 more
doaj +1 more source
Increased Sympathetic Cardiac Autonomic Modulation after Two Consecutive Tilt Tests in Women with Polycystic Ovary Syndrome [PDF]
Revista Brasileira de Ginecologia e Obstetrícia, 2020 Objective The present study aimed to analyze cardiac autonomic modulation via spectral and symbolic analysis of heart rate variability (HRV) in women with polycystic ovary syndrome (PCOS) who were subjected to two consecutive tilt tests. Methods A total
Victor Barbosa Ribeiro +5 more
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