نتایج جستجو برای: profile curvature

تعداد نتایج: 261674  

Knowledge and understanding of changes in forest cover in relation to environmental factors (topography) can be valuable in terms of conservational and protective guidances. The purpose of this study was to identify, quantify and predict deforestation in relation to topographic variables using logistic regression model. The Arasbaran catchments (Naposhtehchay, Ilginehchay and Mardanqumchay) in ...

Journal: :Water 2021

In order to analyze the shear effect of secondary currents on flow structures in a meandering channel, this research developed two-dimensional shallow water model, which included dispersion stress term accounting for vertical velocity profile. A new equation profile that nonlinear effects was derived from motion channel with sharp curvature. Using experiment data obtained large-scale channels, ...

2009
BEN ANDREWS PAUL BRYAN

We prove a comparison theorem for the isoperimetric profiles of solutions of the normalized Ricci flow on the two-sphere: If the isoperimetric profile of the initial metric is greater than that of some positively curved axisymmetric metric, then the inequality remains true for the isoperimetric profiles of the evolved metrics. We apply this using the Rosenau solution as the model metric to dedu...

2003
Yen-Hsi Tsai Yoshikazu Giga

We study numerically the anisotropic bunching effect in crystal growth under curvature and a singular vertical diffusive regularization. Our assumption is that the mobility of the growth depends on the height of the given crystal. This assumption may result in overhanging crystals if approached in a naive way. Instead, we embed the profile of the crystal as the zero level set of a continuous fu...

ژورنال: پژوهش های ریاضی 2018

In this paper, Finsler metrics with relatively non-negative (resp. non-positive), isotropic and constant stretch curvature are studied.  In particular, it is showed that every compact Finsler manifold with relatively non-positive (resp. non-negative) stretch curvature is a Landsberg metric. Also, it is proved that every  (α,β)-metric of non-zero constant flag curvature and non-zero relatively i...

Journal: :Physical review 2022

The influence of the geometrical curvature chiral magnetic films on static and dynamic properties hosted skyrmions is studied theoretically. We predict effects curvature-induced drift under action gradients without any external stimuli. strength driving force essentially depends skyrmion type, N\'eel or Bloch, while trajectory motion determined by type ordering: ferromagnetic antiferromagnetic....

2017
L. Blinov G. Durand S. Yablonsky

Damped curvature oscillations are excited at the surface between a nematic liquid crystal and a solid substrate, from the linear coupling of an AC electric field with the flexoelectric properties of the medium. The waves are detected by a modulation ellipsometry technique. Linear-in-field oscillations of the director in the surface nematic layer have been observed. The amplitude and characteris...

1999
Steven J. Stuart B. J. Berne

Molecular dynamics simulations of hydrated chloride ions have been performed with a polarizable model for interface geometries of varying curvature, ranging from clusters to planar surfaces. The solvation depth profile of the chloride ion is found to depend dramatically on the curvature of the interface. This behavior is consistent with the structure-breaking character of the chloride ion, and ...

Journal: :Vision Research 2010
Kaitlin E.W. Laidlaw Alan Kingstone

The present study aimed to characterize the effect of a nearby distractor on vertical, horizontal, and oblique saccade curvature under normal saccade preparation times. Consistent with previous findings, longer-latency vertical saccades showed greater curvature away from a distractor than did oblique or horizontal saccades. At short latencies, vertical saccades also showed greater curvature tow...

MUKUT TRIPATHI, SUNGPU HONG,

Involving the Ricci curvature and the squared mean curvature, we obtain basic inequalities for different kind of submaniforlds of a Sasakian space form tangent to the structure vector field of the ambient manifold. Contrary to already known results, we find a different necessary and sufficient condition for the equality for Ricci curvature of C-totally real submanifolds of a Sasakian space form...

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