Results 181 to 190 of about 752 (212)
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Phosphor-based thermometry of rotating surfaces
Applied Optics, 1987The use of phosphor thermometry in generator rotor temperature monitoring over the 60-150 degrees C range has been investigated, using measurements of the decay time of the visible emission stimulated in europiumdoped yttrium oxysulfide by UV laser excitation.
L, Mannik, S K, Brown, S R, Campbell
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On Generalized Affine Rotation Surfaces
Results in Mathematics, 1995The concept of affine rotation surface is generalized so as to include one additional class of surfaces, which are called improper affine rotation surfaces. Affine tensors and invariants are calculated for these generalized affine rotation surfaces (GARS). It is shown that, with two exceptions, all affine unimodular homogeneous surfaces are GARS.
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Surface topography and rotational symmetry breaking
Physical Review E, 2012The surface electroclinic effect, which is a rotation of the molecular director in the substrate plane proportional to an electric field E applied normal to the substrate, requires both a chiral environment and C(2) (or lower) rotational symmetry about E.
Rajratan, Basu +4 more
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Shape recovery for rotating surfaces: A tutorial
2013 American Control Conference, 2013One of the key elements of the metrology system for the rotating stage used in the Reflective Electron Beam Lithography (REBL) instrument is a set of laser interferometers that measures the distance to a rotating cylindrical ring shaped mirror. This metrology arrangement allows the lateral x-y motion of the stage to be measured independent from the ...
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Rotational surfaces with rotations in x3x4-plane
2017© 2021, Tsing Hua University. All rights reserved.In the present study we consider generalized rotational surfaces in Euclidean 4-space E4 . Further, we obtain some curvature properties of these surfaces. We also introduce some kind of generalized rotational surfaces in E4 with the choice of meridian curve. Finally, we give some examples.
ARSLAN, KADRİ, BULCA, BETÜL
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Free Surface Oscillations in a Rotating Liquid
The Physics of Fluids, 1959The disturbed motion of a liquid having a free surface in a vertical, rotating, circular cylinder and an equilibrium distribution of velocity corresponding to rigid body rotation is studied in linear approximation. It is shown that a vertical gradient of velocity necessarily generates vorticity, whence the disturbed motion cannot remain irrotational ...
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On rotational water waves with surface tension
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2007The purpose of this paper is to present some recent advances in the study of water waves with vorticity and surface tension. These are periodic, two-dimensional waves over a flat bottom and the surface profiles are symmetric and monotone between crest and trough. The proofs rely on bifurcation theory.
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Rotation and translation invariant 3D descriptor for surfaces
2015 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), 2015We present a descriptor estimator for surface-based 3D input data for coarse localization of mobile robots. From the input pointclouds surfaces are reconstructed and simplified to detect stable keypoints which are used to evaluate rotation and translation invariant features.
Joshua Hampp, Richard Bormann
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Benz surfaces induced by rotational surfaces in \(E^4\)
2012Summary: In the present paper we define a special class of surfaces determined by a given surface in the four-dimensional Euclidean space \(E^4\), which we call Benz surfaces following the idea of W. Benz and G. Stanilov in the three-dimensional case. We consider the class of Benz surfaces induced by surfaces of revolution in \(E^3\), and by standard ...
ARSLAN, KADRİ +2 more
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Stretching a surface in a rotating fluid
ZAMP Zeitschrift f�r angewandte Mathematik und Physik, 1988A surface is stretched in a rotating fluid. The solution to the governing set of nonlinear differential equations depends on a parameter \(\lambda\) which is the ratio of the rotation rate to the stretching rate. Perturbation solutions for small and large \(\lambda\) compare well with exact numerical integration.
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