Results 211 to 220 of about 104,140 (248)

The Logarithmic Spiral of Cosmological Horizons

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Cerebral Blood Flow during Early Antipsychotic Treatment in First Episode Psychosis

Sun J, Lawrence A, King B, Casetta C, Zelaya F, Griffiths K, Marchant L, Rich N, Howes O, Dazzan P, Pollard R, MacCabe J, Egerton A.   +12 more
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Approximation of logarithmic spirals

Computer Aided Geometric Design, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Gerald Farin
exaly   +3 more sources

On a Property of Logarithmic Spirals

Mathematics Magazine, 1968
Logarithmic spirals, analyzing curve on surface of cylinder, existence and conditions of ellipticity conditions, determining curve transformation into ellipse based on logarithmic spiral ...
A Zirakzadeh, N X Vinh
exaly   +4 more sources

Beautiful Math--Aesthetic Patterns Based on Logarithmic Spirals

IEEE Computer Graphics and Applications, 2013
A simple, fast method generates various visually appealing spiral patterns. The method is based on the concept that spiral patterns comprise a symmetry group of tilings. It employs invariant mappings and a dynamical system to create seamless colored patterns.
Peichang Ouyang
exaly   +3 more sources

A certain feature of logarithmic spirals

Journal of Mathematical Sciences, 2011
A curve formed by inversion of a logarithmic spiral is called a double logarithmic spiral. The curves in this family possess the following property: there always exists such a spiral with continuous and monotone curvature satisfying any possible boundary conditions (endpoints, tangents, and curvatures).
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Logarithmic Spirals and Computer Art

1989
Interesting geometric patterns are obtained by mapping a rectangular region in one coordinate system onto an annular region in another coordinate system. The mapping involves logarithmic spirals and several examples are presented which involve interlocking spirals, cubes and dragon patterns.
exaly   +2 more sources

Logarithmic spirals in 2 d perfect fluids [PDF]

Journal De L'Ecole Polytechnique - Mathematiques
We study logarithmic spiraling solutions to the 2d incompressible Euler equations which solve a nonlinear transport system on $\mathbb{S}$. We show that this system is locally well-posed in $L^p, p\geq 1$ as well as for atomic measures, that is ...
Said, Ayman R., Jeong, In-Jee
exaly   +4 more sources

Angular Logarithmic Spirals

Hans Walser
exaly   +2 more sources

Logarithmic Spiral Coastlines

South African Geographical Journal, 1986
Abstract The 45 km stretch of coastline between Mapelane and Cape Vidal is an offset coastline which is subject to a dominant wave attack from the south-east. This section of coastline is characterized by long stretches of sandy beach alternating with rocky headlands.
June Meeuwis, P.A.J. Van Rensburg
openaire   +1 more source