Results 11 to 20 of about 22,150,955 (299)

Harmonic Analysis for Real Spherical Spaces [PDF]

open access: yesActa Mathematica Sinica, English Series, 2017
Shortened title, typos fixed, more details on dual smooth Frobenius reciprocity (now Lemma 6.6). 38 pages, lecture notes for the Sanya meeting on spherical varieties.
Krötz, Bernhard, Schlichtkrull, Henrik
openaire   +5 more sources

Analysis of binning of normals for spherical harmonic cross-correlation [PDF]

open access: yesSPIE Proceedings, 2012
Spherical harmonic cross-correlation is a robust registration technique that uses the normals of two overlapping meshes to bring them into coarse rotational alignment. The amount of overlap between the two meshes is the primary determinant of whether the spherical harmonic cross-correlation achieves correct registration.
Robert L. Larkins   +2 more
openaire   +3 more sources

Harmonic Analysis of Spherical Four-Bar Mechanisms

open access: yesJournal of Applied Mechanics, 1962
Understanding the dynamic behavior of mechanisms, which is essential to their high-speed applications, demands a clear knowledge of the acceleration of the output relative to input. Such knowledge can be ascertained by means of harmonic analysis of the motion of mechanisms.
A. T. Yang
openaire   +2 more sources

A spherical harmonic analysis of redshift space [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1995
We re-examine the effects of redshift space distortion in all-sky galaxy redshift surveys in the formalism of spherical harmonics. Within this framework we show how one can treat both the large-scale linear effects, and the small-scale nonlinear clustering, exactly to first order.
Heavens, A. F., Taylor, A. N.
openaire   +2 more sources

Discrete Analogues in Harmonic Analysis: Spherical Averages [PDF]

open access: yesThe Annals of Mathematics, 2002
In this paper we prove an analogue in the discrete setting of \Bbb Z^d, of the spherical maximal theorem for \Bbb R^d. The methods used are two-fold: the application of certain "sampling" techniques, and ideas arising in the study of the number of representations of an integer as a sum of d squares in particular, the "circle method".
Magyar, Ákos   +2 more
openaire   +2 more sources

Local determination of ionospheric plasma convection from coherent scatter radar data using the SECS technique [PDF]

open access: yes, 2010
A new technique for merging line-of-sight (LOS) data of the ionospheric plasma convection velocity, as obtained from coherent scatter radars, into a full velocity vector field on a sphere is presented.
Tim K. Yeoman (7583066)   +7 more
core   +4 more sources

Spherical harmonic analysis of cortical complexity in autism and dyslexia. [PDF]

open access: yesTransl Neurosci, 2012
Abstract Alterations in gyral form and complexity have been consistently noted in both autism and dyslexia. In this present study, we apply spherical harmonics, an established technique which we have exapted to estimate surface complexity of the brain, in order to identify abnormalities in gyrification between autistics, dyslexics, and ...
Williams EL   +4 more
europepmc   +4 more sources

Spherical harmonic analysis of equalization in a reverberant room [PDF]

open access: yes2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004
We investigate the performance of acoustic equalization in reverberant environments. We first highlight an efficient general representation of a sound field using spherical harmonics. We then use this representation to develop a concise closed-form expression for robustness of equalization to sensor movement. This expression is used (i) to characterize
Terence Betlehem, Thushara D. Abhayapala
openaire   +2 more sources

APPLYING THE METHOD OF MAXIMUM CONTRIBUTIONS TO THE MAGNETOGRAM INVERSION TECHNIQUE

open access: yesSolar-Terrestrial Physics, 2020
Fundamentals of the spherical harmonic analysis (SHA) of the geomagnetic field were created by Gauss. They acquired the classical Chapman — Schmidt form in the first half of the XXth century.
Yu.V. Penskikh
doaj   +1 more source

Spherical harmonic decomposition of a sound field based on observations along the equator of a rigid spherical scatterer

open access: yes, 2021
We present a method for computing a spherical harmonic representation of a sound field based on observations of the sound pressure along the equator of a rigid spherical scatterer.
Hannes Helmholz   +11 more
core   +1 more source

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