Patterns of Symmetry Expression in Angiosperms: Developmental and Evolutionary Lability
Frontiers in Ecology and Evolution, 2020 Variation in flower symmetry is a remarkable aspect of flowering plant diversity. Multiple evolutionary transitions from an ancestral form of radial symmetry to bilateral symmetry and reversals from bilateral to radial symmetry have occurred during ...
Somayeh Naghiloo
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About Frequency Characteristics of Electric Fields of Cylindrical Piezoceramic Antenna with Screen in the Form of an Open Ring Layer [PDF]
Журнал нано- та електронної фізики, 2016 According to rigorous method of “related” fields the analytical expressions to describe electric fields of cylindrical piezoceramic radiators, forming flat echolocation system was obtained. As a result of numerical analysis the quantity relations and the
O.I. Nyzhnyk, A.G. Leiko
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Floral symmetry affects bumblebee approach consistency in artificial flowers
Journal of Pollination Ecology, 2016 Bilateral symmetry has evolved from radial symmetry in several floral lineages, and multiple hypotheses have been proposed to account for the success of this floral plan.
Brett Matthew Culbert, Jessica Forrest
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Topological charge of optical vortices devoid of radial symmetry
Computer optics, 2020 Here we theoretically obtain values of the topological charge (TC) for vortex laser beams devoid of radial symmetry: asymmetric Laguerre-Gaussian (LG) beams, Bessel-Gaussian (BG) beams, Kummer beams, and vortex Hermite-Gaussian (HG) beams.
A. Kovalev
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On tests for symmetry and radial symmetry of bivariate copulas towards testing for ellipticity
Computational statistics (Zeitschrift), 2020 Very simple non-parametric tests are proposed to detect symmetry and radial symmetry in the dependence structure of bivariate copula data. The performance of the proposed tests is illustrated in an intensive simulation study and compared to the one of ...
Miriam Jaser, A. Min
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Fast Radial and Bilateral Symmetry Detection Using Inverted Gradient Hash Maps
EAI Endorsed Transactions on Context-aware Systems and Applications, 2017 This paper presents a fast and novel algorithm for both radial and bilateral symmetry detection based on inverted gradient hash maps (IGHMs). A hash map is an associative array that stores image gradient magnitudes and orientations in the form of an ...
R. Gonzalez, L. Lincoln
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Energy Decay in Thermoelastic Bodies with Radial Symmetry
Acta Applicandae Mathematicae, 2022 AbstractIn this paper, we consider the energy decay of some problems involving domains with radial symmetry. Three different settings are studied: a strong porous dissipation and heat conduction, a weak porous dissipation and heat conduction and poro-thermoelasticity with microtemperatures.
Noelia Bazarra +2 more
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On a class of variational problems with linear growth and radial symmetry [PDF]
Commentationes Mathematicae Universitatis Carolinae, 2019 We discuss variational problems on two-dimensional domains with energy densities of linear growth and with radially symmetric data. The smoothness of generalized minimizers is established under rather weak ellipticity assumptions. Further results concern
M. Bildhauer, M. Fuchs
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Radially Symmetric Solution for Fractional Laplacian Systems with Different Negative Powers
Fractal and Fractional, 2022 By developing the direct method of moving planes, we study the radial symmetry of nonnegative solutions for a fractional Laplacian system with different negative powers: (−Δ)α2u(x)+u−γ(x)+v−q(x)=0,x∈RN, (−Δ)β2v(x)+v−σ(x)+u−p(x)=0,x∈RN, u(x)≳|x|a,v(x)≳|x ...
Haiyong Xu +3 more
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Multibranch Bogoliubov-Bloch spectrum of a cigar shaped Bose condensate in an optical lattice [PDF]
, 2005 We study properties of excited states of an array of weakly coupled quasi-two-dimensional Bose condensates by using the hydrodynamic theory. The spectrum of the axial excited states strongly depends on the coupling among the various discrete radial modes
C. Fort +3 more
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