Influence of parameterized small‐scale gravity waves on the migrating diurnal tide in Earth's thermosphere
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017ja024089
Abstract: Effects of subgrid-scale gravity waves (GWs) on the diurnal migrating tides are investigated from the mesosphere to the upper thermosphere for September equinox conditions, using a general circulation model coupled with the extended spectral nonlinear… read more here.
Keywords: gravity waves; correlation; harmonics; scale gravity ... See more keywords
On the spatial and temporal shift in the archetypal seasonal temperature cycle as driven by annual and semi‐annual harmonics
Sign Up to like & getrecommendations! Published in 2020 at "Environmetrics"
DOI: 10.1002/env.2665
Abstract: Statistical methods are required to evaluate and quantify the uncertainty in environmental processes, such as land and sea surface temperature, in a changing climate. Typically, annual harmonics are used to characterize the variation in the… read more here.
Keywords: temperature; annual semi; cycle; semi annual ... See more keywords
Directed flow from C-odd gluon correlations at small x
Sign Up to like & getrecommendations! Published in 2018 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2018)140
Abstract: A bstractIt is shown that odd harmonic azimuthal correlations, including the directed flow v1, in forward two-particle production in peripheral proton-nucleus (pA) collisions can arise simply from the radial nuclear profile of a large nucleus.… read more here.
Keywords: gtmd correlator; gtmd; harmonics; gluon ... See more keywords
More on Modified Spherical Harmonics
Sign Up to like & getrecommendations! Published in 2019 at "Advances in Applied Clifford Algebras"
DOI: 10.1007/s00006-019-0990-z
Abstract: A modification of the classical theory of spherical harmonics is presented. The space $${\mathbb {R}}^d = \{(x_1,\ldots ,x_d)\}$$ is replaced by the upper half space $${{\mathbb {R}}}_{+}^{d}=\left\{ (x_1,\ldots ,x_d), x_d > 0 \right\} $$ ,… read more here.
Keywords: mathbb; harmonics; modified spherical; spherical harmonics ... See more keywords
Concentration Estimates for Band-Limited Spherical Harmonics Expansions via the Large Sieve Principle
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Fourier Analysis and Applications"
DOI: 10.1007/s00041-020-09744-8
Abstract: We study a concentration problem on the unit sphere $$\mathbb {S}^2$$ S 2 for band-limited spherical harmonics expansions using large sieve methods. We derive upper bounds for concentration in terms of the maximum Nyquist density.… read more here.
Keywords: spherical harmonics; harmonics expansions; large sieve; harmonics ... See more keywords
Precise and efficient evaluation of gravimetric quantities at arbitrarily scattered points in space
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geodesy"
DOI: 10.1007/s00190-017-1094-y
Abstract: Gravimetric quantities are commonly represented in terms of high degree surface or solid spherical harmonics. After EGM2008, such expansions routinely extend to spherical harmonic degree 2190, which makes the computation of gravimetric quantities at a… read more here.
Keywords: gravimetric quantities; arbitrarily scattered; points space; scattered points ... See more keywords
New procedure for harmonics estimation based on Hilbert transformation
Sign Up to like & getrecommendations! Published in 2017 at "Electrical Engineering"
DOI: 10.1007/s00202-016-0434-x
Abstract: The paper suggests a new procedure for the estimation of the parameters (amplitude and phase) for a complex periodic signal, based on the concept of analytic signal (AS). Starting from the supposition that the signal… read more here.
Keywords: estimation; new procedure; transformation; harmonics ... See more keywords
Process capability index for AC transformer under electrical harmonics
Sign Up to like & getrecommendations! Published in 2017 at "Electrical Engineering"
DOI: 10.1007/s00202-017-0509-3
Abstract: Nowadays, the quality of electronic devices is subjected to many variables such as electrical, thermal, mechanical and environmental factors. Voltage variation induced by electrical harmonics presented in the power lines is one of the main… read more here.
Keywords: index transformer; study; process capability; harmonics ... See more keywords
Comparison of properties of two basic variants of combined star-delta stator winding of induction machines
Sign Up to like & getrecommendations! Published in 2018 at "Electrical Engineering"
DOI: 10.1007/s00202-018-0695-7
Abstract: Two basic variants of combined star-delta stator windings of induction machines are analysed. The aim of the use of the combined winding is to suppress a chosen group of higher spatial harmonics of the current… read more here.
Keywords: harmonics; combined star; delta stator; star delta ... See more keywords
Advanced optimization methods for fractional slot concentrated windings
Sign Up to like & getrecommendations! Published in 2019 at "Electrical Engineering"
DOI: 10.1007/s00202-019-00760-6
Abstract: Usage of fractional slot concentrated windings (FSCWs) in electrical machines offers several advantages due to their simplicity and compactness. However, the magnetic field of FSCWs has more space harmonics, including sub-harmonics that lead to undesirable… read more here.
Keywords: optimization methods; harmonics; slot concentrated; concentrated windings ... See more keywords
Toward recursive spherical harmonics-issued bi-filters: Part I: theoretical framework
Sign Up to like & getrecommendations! Published in 2019 at "Soft Computing"
DOI: 10.1007/s00500-018-3596-9
Abstract: This work lies in the whole topic of signal/image processing based on frequency decompositions. These are indeed applied in a variety of subjects such as estimation, reconstruction, shape recognition, filtering $$\dots $$⋯. Among these decompositions,… read more here.
Keywords: toward recursive; harmonics; issued filters; spherical harmonics ... See more keywords