Results 261 to 270 of about 1,132,423 (301)

Estimating Topology Preserving and Smooth Displacement Fields

IEEE Transactions on Medical Imaging, 2004
We propose a method for enforcing topology preservation and smoothness onto a given displacement field. We first analyze the conditions for topology preservation on two- and three-dimensional displacement fields over a discrete rectangular grid. We then pose the problem of finding the closest topology preserving displacement field in terms of its ...
Bilge, Karaçali, Christos, Davatzikos
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Observations Of Displacement Fields In Particulate Composites

Materials Technology, 2003
In the microscopic field corresponding to the tensile deformation of a solid propellant, moiré patterns that show dislocations can be observed. The source of these dislocations is the heterogeneity of the material. A theoretical framework is presented for the analysis of the fringes.
Sciammarella, C. A., Trentadue, B., Sciammarella, F. M.   +2 more
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Cementing Displacement Practices Field Applications

Journal of Petroleum Technology, 1990
Summary Most remedial cementing operations and related problem costs result fromannular gas leakage or zonal communication in the annulus after primarycementing. After the physical properties of the cement, the most importantfactor in successful primary cementing is good mud removal by the cementslurry.
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Field Dependence, Displaced Vision, and Motor Performance

Journal of Motor Behavior, 1976
This study compared the effect of displaced lateral vision upon performance of a gross motor task in field-dependent and field-independent female athletes. No meaningful distinction in motor performance between the two groups of subjects was apparent during initial and final normal vision conditions.
D, Pargman, K, Inomata
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Extrapolation of Vector (Elastic) Displacements by Displacement Potential Field Continuation

Exploration Geophysics, 1993
Extrapolating recorded elastic displacement data from the surface downwards is the first step of a two-step elastic migration scheme. The second step is the image formation condition. Although an elastic (vector) reverse time migration can extrapolate elastic displacement data downwards, the subsurface reflections and the loss of energy due to the use ...
J. Zhe, S. Greenhalgh
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DeterminingK and related stress-field parameters from displacement fields

Experimental Mechanics, 1985
A general algorithm is presented that computes the stress-field parameters for opening-mode crack problems in a least-squares sense from full-field moire or speckle-displacement fringe patterns. The algorithm can be used in the presence of rigid-body rotation and does not require absolute fringe numbering. Extensive numerical experiments were conducted
D. B. Barker, R. J. Sanford, R. Chona
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Regularized blur-assisted displacement field estimation

Proceedings of 3rd IEEE International Conference on Image Processing, 2002
Due to the finite acquisition time of practical cameras, objects can move during image acquisition, therefore introducing motion blur degradations. Traditionally, these degradations are treated as undesirable artifacts that should be removed before further processing. We consider the use of motion blur as an indication of scene motion.
D.L. Tull, A.K. Katsaggelos
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The displacement fields of inclined faults

Bulletin of the Seismological Society of America, 1971
abstract Closed analytical expressions for the displacement fields of inclined, finite strike-slip and dip-slip faults are given. They may be readily used in the numerical computation of displacements, and, by differentiation, strain and stress fields may be derived. The expressions are valid both at the surface and at depth.
L. Mansinha, D. E. Smylie
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Displacement and velocity fields in hoppers

Powder Technology, 1977
Abstract A stereoscopic technique was used to investigate a number of factors that affect flow in a two-dimensional bin with horizontal discharge slot. The technique proved to be a suitable, accurate and efficient method to carry out flow field measurements in flowing bulk materials.
Mira Levinson, Benjamin Shmutter, William Resnick   +2 more
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Dislocation Displacement Fields in Anisotropic Media

Journal of Applied Physics, 1969
The methods of Eshelby, Read, and Shockley [Acta Met. 1, 251 (1953)] and of Stroh [Phil. Mag. 3, 625 (1958)] for determining the anisotropic elastic field of a dislocation are reviewed briefly and several problems in their application are discussed. The Stroh method is extended to the dislocation displacement field.
J. P. Hirth, P. C. Gehlen
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