Results 11 to 20 of about 8,453 (266)

Isotropy in group cohomology [PDF]

open access: yesBulletin of the London Mathematical Society, 2014
The analogue of Lagrangians for symplectic forms over finite groups is studied, motivated by the fact that symplectic G-forms with a normal Lagrangian ...
Ben David, Nir   +2 more
openaire   +5 more sources

Restoration of Isotropy on Fractals [PDF]

open access: yesPhysical Review Letters, 1995
We report a new type of restoration of macroscopic isotropy (homogenization) in fractals with microscopic anisotropy. The phenomenon is observed in various physical setups, including diffusions, random walks, resistor networks, and Gaussian field theories.
Barlow, Martin T.   +3 more
openaire   +3 more sources

On Isotropy Calibration of Transformers

open access: yesCoRR, 2021
Different studies of the embedding space of transformer models suggest that the distribution of contextual representations is highly anisotropic - the embeddings are distributed in a narrow cone. Meanwhile, static word representations (e.g., Word2Vec or GloVe) have been shown to benefit from isotropic spaces.
Ding, Yue   +4 more
openaire   +3 more sources

The scale of cosmic isotropy [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2012
The most fundamental premise to the standard model of the universe, the Cosmological Principle (CP), states that the large-scale properties of the universe are the same in all directions and at all comoving positions. Demonstrating this theoretical hypothesis has proven to be a formidable challenge.
Marinoni, Christian, Bel, J, Buzzi, A
openaire   +3 more sources

The isotropy of compact universes [PDF]

open access: yesClassical and Quantum Gravity, 2001
22 pages in LaTeX2e with the amsmath ...
Barrow, John D., Kodama, Hideo
openaire   +3 more sources

Kinematic Analysis of a Parallel Manipulator Driven by Perpendicular Linear Actuators

open access: yesActuators, 2021
In this paper, a goniometer-type specimen stage with a linear actuation mechanism mounted on a rotation mechanism is introduced. The linear actuation mechanism was modeled as a spatial parallel manipulator consisting of a moving body, three linear ...
Kee-Bong Choi   +4 more
doaj   +1 more source

Dynamic stability of heated geometrically irregular cylindrical shell in supersonic gas flow

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2018
On the basis of the Love model, a geometrically irregular heated cylindrical shell blown by a supersonic gas flow from one of its main surfaces is considered.
Grigory N Belostochnyi, Olga A Myltcina
doaj   +1 more source

Modeling and numerical analysis for mechanical characterization of soft tissue mechanism applying inverse finite element technique

open access: yesFrontiers in Applied Mathematics and Statistics, 2023
Tissue-mimicking materials [e.g., polyvinyl alcohol cryogel (PVA-C)] are extensively used in clinical applications such as tissue repair and tissue engineering.
Md. Mulk   +2 more
doaj   +1 more source

Sparse inpainting and isotropy [PDF]

open access: yesJournal of Cosmology and Astroparticle Physics, 2014
Sparse inpainting techniques are gaining in popularity as a tool for cosmological data analysis, in particular for handling data which present masked regions and missing observations. We investigate here the relationship between sparse inpainting techniques using the spherical harmonic basis as a dictionary and the isotropy properties of cosmological ...
Feeney, Stephen M.   +5 more
openaire   +6 more sources

Estimativa da radiação global incidente em superfícies inclinadas por modelos isotrópicos e índice de claridade Estimation of the incident global radiation on tilted surfaces using isotropic models and clearness index

open access: yesPesquisa Agropecuária Brasileira, 2010
O objetivo deste trabalho foi avaliar o desempenho de modelos isotrópicos de estimativa do total de radiação incidente em superfícies inclinadas e propor estimativas com base nas correlações entre os índices de claridade horizontais e inclinados, em ...
Adilson Pacheco de Souza   +3 more
doaj   +1 more source

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