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Searching for Radial Symmetry [PDF]

open access: yesi-Perception, 2017
Symmetry is ubiquitous in the natural world. Numerous investigations, dating back over one hundred years, have explored the visual processing of symmetry. However, these studies have been concerned with mirror symmetry, overlooking radial (or rotational)
Ben J. Jennings, Frederick A. A. Kingdom
doaj   +7 more sources

Minimax Density Estimation Under Radial Symmetry

open access: yesIEEE Access, 2023
This study illustrates a dimensionality reduction effect of radial symmetry in nonparametric density estimation. To deal with the class of radially symmetric functions, we adopt a generalized translation operation that preserves the symmetry structure ...
Kwan-Young Bak, Ja-Yong Koo
doaj   +2 more sources

Radial symmetry and symmetry breaking for some interpolation inequalities [PDF]

open access: yesCalculus of Variations and Partial Differential Equations, 2010
We analyze the radial symmetry of extremals for a class of interpolation inequalities known as Caffarelli-Kohn-Nirenberg inequalities, and for a class of weighted logarithmic Hardy inequalities which appear as limiting cases of the first ones.
Dolbeault, Jean   +3 more
core   +6 more sources

Radial symmetry in a chimeric glutamate receptor pore. [PDF]

open access: yesNat Commun, 2014
Ionotropic glutamate receptors comprise two conformationally different A/C and B/D subunit pairs. Closed channels exhibit fourfold radial symmetry in the transmembrane domain (TMD) but transition to twofold dimer-of-dimers symmetry for extracellular ligand binding and N-terminal domains.
Wilding TJ, Lopez MN, Huettner JE.
europepmc   +5 more sources

Radial Symmetry of p-Harmonic Minimizers [PDF]

open access: yesArchive for Rational Mechanics and Analysis, 2018
18 pages, 2 ...
Aleksis Koski, Jani Onninen
openaire   +5 more sources

Radial Symmetry Does Not Preclude Condorcet Cycles If Different Voters Weight the Issues Differently

open access: yesEconomies, 2022
Radial symmetry, by our definition, is a precise condition on continuous ideal-point distributions, rarely if ever found exactly in practice, that is similar to the classical 1967 symmetry condition of Plott but pertains to an infinite electorate; the ...
Richard F. Potthoff
doaj   +1 more source

Eulerian Dynamics in Multidimensions with Radial Symmetry [PDF]

open access: yesSIAM Journal on Mathematical Analysis, 2021
We study the global wellposedness of pressure-less Eulerian dynamics in multi-dimensions, with radially symmetric data. Compared with the 1D system, a major difference in multi-dimensional Eulerian dynamics is the presence of the spectral gap, which is difficult to control in general.
openaire   +2 more sources

Qualitative Numerical Analysis of a Free-Boundary Diffusive Logistic Model

open access: yesMathematics, 2023
A two-dimensional free-boundary diffusive logistic model with radial symmetry is considered. This model is used in various fields to describe the dynamics of spreading in different media: fire propagation, spreading of population or biological invasions.
María Consuelo Casabán   +3 more
doaj   +1 more source

Semi-Automated Detection of Cerebral Microbleeds on 3.0 T MR Images. [PDF]

open access: yesPLoS ONE, 2013
Cerebral microbleeds are associated with vascular disease and dementia. They can be detected on MRI and receive increasing attention. Visual rating is the current standard for microbleed detection, but is rater dependent, has limited reproducibility ...
Hugo J Kuijf   +7 more
doaj   +1 more source

Symmetries of Trautman retarded radial coordinates [PDF]

open access: yesClassical and Quantum Gravity, 2018
12 pages, no ...
Maciej Kolanowski, Jerzy Lewandowski
openaire   +3 more sources

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