Results 31 to 40 of about 416,391 (281)

Finite-distance singularities in the tearing of thin sheets [PDF]

open access: yes, 2011
We investigate the interaction between two cracks propagating in a thin sheet. Two different experimental geometries allow us to tear sheets by imposing an out-of-plane shear loading.
A. Boudaoud   +5 more
core   +2 more sources

On de-Sitter Geometry in Cosmic Void Statistics [PDF]

open access: yes, 2013
Starting from the geometrical concept of a 4-dimensional de-Sitter configuration of spheres in Euclidean 3-space and modelling voids in the Universe as spheres, we show that a uniform distribution over this configuration space implies a power-law for the
Chon, Sunmyon   +3 more
core   +1 more source

‘Similar’ coordinate systems and the Roche geometry: application [PDF]

open access: yesAstrophysics and Space Science, 2011
9 pages (preprint format), 9 figures, published in Astrophysics and Space ...
openaire   +3 more sources

Magnetic field reversals and long-time memory in conducting flows [PDF]

open access: yes, 2014
Employing a simple ideal magnetohydrodynamic model in spherical geometry,we show that the presence of either rotation or finite magnetic helicity is sufficient to induce dynamical reversals of the magnetic dipole moment.
Dmitruk, P.   +4 more
core   +2 more sources

A Comparative Study of Fractal Geometry Layouts in Organizing the Architecture and Ornamentation of Nasir Al-Mulk Mosque [PDF]

open access: yesنگره
Iranian geometry is the result of the architect's view of philosophical aspects, natural sciences, and applied mathematics. The architecture and application of ornamentation, derived from nature’s geometry patterns in organizing all kinds of Karbandies ...
Farnaz Farshid Rad   +2 more
doaj   +1 more source

Unsupervised eye pupil localization through differential geometry and local self-similarity matching.

open access: yesPLoS ONE, 2014
The automatic detection and tracking of human eyes and, in particular, the precise localization of their centers (pupils), is a widely debated topic in the international scientific community.
Marco Leo   +3 more
doaj   +1 more source

Semiclassical Strings in Supergravity PFT [PDF]

open access: yes, 2014
Puff Field Theory (PFT) is an example of a non-local field theory which arises from a novel embedding of D-branes in Melvin universe. We study several rotating and pulsating string solutions of the F-string equations of motion in the supergravity dual of
Banerjee, Aritra   +2 more
core   +2 more sources

Geometric transformations in school geometry

open access: yesLietuvos Matematikos Rinkinys
The study delves into the learning progression for school geometry based on transformations proposed by Hung-Hsi Wu. Plane transformations – translations, reflections, rotations, and dilations – are considered.
Rimas Norvaiša
doaj   +3 more sources

Scalar fields on SL(2,R) and H^2 x R geometric spacetimes and linear perturbations

open access: yes, 2004
Using appropriate harmonics, we study the future asymptotic behavior of massless scalar fields on a class of cosmological vacuum spacetimes. The spatial manifold is assumed to be a circle bundle over a higher genus surface with a locally homogeneous ...
Andersson L   +27 more
core   +1 more source

Modeling meander morphodynamics over self-formed heterogeneous floodplains [PDF]

open access: yes, 2017
This work addresses the signatures embedded in the planform geometry of meandering rivers consequent to the formation of floodplain heterogeneities as the river bends migrate.
Browlie W. R.   +10 more
core   +1 more source

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