Results 1 to 10 of about 7,674 (246)

Spherical harmonics to quantify cranial asymmetry in deformational plagiocephaly [PDF]

open access: yesScientific Reports, 2022
Cranial deformation and deformational plagiocephaly (DP) in particular affect an important percentage of infants. The assessment and diagnosis of the deformation are commonly carried by manual measurements that provide low interuser accuracy.
Jonas Grieb   +2 more
doaj   +2 more sources

Spherical harmonics coefficients for ligand-based virtual screening of cyclooxygenase inhibitors. [PDF]

open access: yesPLoS ONE, 2011
Molecular descriptors are essential for many applications in computational chemistry, such as ligand-based similarity searching. Spherical harmonics have previously been suggested as comprehensive descriptors of molecular structure and properties.
Quan Wang   +7 more
doaj   +2 more sources

SHTools: Tools for Working with Spherical Harmonics

open access: yesGeochemistry, Geophysics, Geosystems, 2018
Geophysical analyses are often performed in spherical geometry and require the use of spherical harmonic functions to express observables or physical quantities.
Mark A Wieczorek, Matthias Meschede
exaly   +2 more sources

Some Addition Theorems for Spin-Weighted Spherical Harmonics

open access: yesUniverse
We present some addition theorems for spin-weighted spherical harmonics, generalizing previous results for scalar (spin-zero) spherical harmonics. These addition theorems involve sums over the azimuthal quantum number of products of two spin-weighted ...
Alessandro Monteverdi   +2 more
exaly   +3 more sources

4D reconstruction of murine developmental trajectories using spherical harmonics

open access: yesDevelopmental Cell, 2022
Giovanni Dalmasso   +2 more
exaly   +2 more sources

Spherical harmonic projectors [PDF]

open access: yesMathematics of Computation, 2003
The harmonic projection (HP), which is implicit in the numerous harmonic transforms between physical and spectral spaces, is responsible for the reliability of the spectral method for modeling geophysical phenomena. As currently configured, the HP consists of a forward transform from physical to spectral space (harmonic analysis ...
Paul N. Swarztrauber, William F. Spotz
openaire   +1 more source

Very low frequency three-dimensional beamforming for a miniaturized aperture acoustic vector sensor array [PDF]

open access: yesJASA Express Letters, 2022
In this Letter, a three-dimensional beamforming method is proposed for a miniaturized aperture acoustic vector sensor (AVS) array. This method extracts the multipole modes using the AVS array, and then synthesizes the desired beam pattern according to ...
Junyuan Guo   +4 more
doaj   +1 more source

Robust Object Classification Approach Using Spherical Harmonics

open access: yesIEEE Access, 2022
Point clouds produced by either 3D scanners or multi-view images are often imperfect and contain noise or outliers. This paper presents an end-to-end robust spherical harmonics approach to classifying 3D objects.
Ayman Mukhaimar   +4 more
doaj   +1 more source

Weakly Orthogonal Spherical Harmonics in a Non-Polar Spherical Coordinates and its Application to Functions on Cubed-Sphere

open access: yesSultan Qaboos University Journal for Science, 2012
In a recent paper (Nasir, 2007), a set of weakly orthogonal and completely orthogonal spherical harmonics in a non-polar spherical coordinate system based on a cubed-sphere was constructed. In this work, we explore some linear relations between these two
M.A.A.M. Faham, H.M. Nasir
doaj   +1 more source

Modeling of Ionospheric Delay for SBAS Using Spherical Harmonics Functions [PDF]

open access: yesTransNav, 2013
In SBAS (satellite-based augmentation system), it is important to estimate ionospheric delay accurately to guarantee user's accuracy and integrity. Grid based ionospheric models are generally used to estimate ionospheric delay for SBAS.
Deokhwa Han, Ho Yun, Changdon Kee
doaj   +1 more source

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