Results 41 to 50 of about 159,843 (190)

Kidney Segmentation in CT Data Using Hybrid Level-Set Method with Ellipsoidal Shape Constraints

Metrology and Measurement Systems, 2017
With development of medical diagnostic and imaging techniques the sparing surgeries are facilitated. Renal cancer is one of examples. In order to minimize the amount of healthy kidney removed during the treatment procedure, it is essential to design a ...
Skalski Andrzej, Heryan Katarzyna, Jakubowski Jacek, Drewniak Tomasz   +3 more
doaj   +1 more source

Effect of Strain Hardening and Ellipticity on Elastic–Plastic Contact Behaviour between Ellipsoids and Rigid Planes

Machines, 2022
The contact behaviour between an ellipsoid and a rigid plane is significant in research on bearing and assembly joint surfaces. However, an empirical relationship between an elastic–plastic ellipsoid and a rigid plane has not been established.
Jian Chen, Wangyang Zhang, Chenglong Wang, Di Liu, Linbo Zhu   +4 more
doaj   +1 more source

Solutions to the direct and inverse navigation problems on the great ellipse

Journal of Geodetic Science, 2012
The Great Ellipse (GE) is the curve of intersection between the surface and a plane through the center of an ellipsoid. For arcs within a few thousands of kilometres it agrees within a few metres with the geodesic.
Sjöberg L. E.
doaj   +1 more source

Photo-Crosslinkable Colloids: From Fluid Structure and Dynamics of Spheres to Suspensions of Ellipsoids

Gels, 2016
Recently-developed photo-crosslinkable PMMA (polymethylmethacrylate) colloidal spheres are a highly promising system for fundamental studies in colloidal physics and may have a wide range of future technological applications. We synthesize these colloids
Avner P. Cohen, Maria Alesker, Andrew B. Schofield, David Zitoun, Eli Sloutskin   +4 more
doaj   +1 more source

Stress field and spin axis relaxation for inelastic triaxial ellipsoids [PDF]

, 2012
A compact formula for the stress tensor inside a self-gravitating, triaxial ellipsoid in an arbitrary rotation state is given. It contains no singularity in the incompressible medium limit.
A. Rożek, Breiter, Burns, Byrd, Chandrasekhar, Chree, D. Vokrouhlický, Denisov, Deprit, Efroimsky, Efroimsky, Efroimsky, Efroimsky, Efroimsky, Efroimsky, Harris, Innes, Lambeck, Landau, Lazarian, Love, Molina, Munk, O'Connell, Paolicchi, Pravec, Prendergast, Purcell, Rubincam, S. Breiter, Saad, Scheeres, Sharma, Tokis, Vokrouhlický, Warner, Washabaugh, Whittaker, Wilmanski   +38 more
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Three Ellipsoids for External Approximation of the Half-Ball

Кібернетика та комп'ютерні технології
Introduction. Ellipsoids that approximate the half-ball in Rn (n≥2) and their volume is smaller than the volume of the ball can be used to construct algorithms for solving the problem of minimization of a convex (smooth or non-smooth) function, the ...
Olha Khomiak
doaj   +1 more source

The triaxial ellipsoid dimensions, rotational pole, and bulk density of ESA Rosetta target asteroid (21) Lutetia

, 2010
We seek the best size estimates of the asteroid (21) Lutetia, the direction of its spin axis, and its bulk density, assuming its shape is well described by a smooth featureless triaxial ellipsoid, and to evaluate the deviations from this assumption ...
A. Conrad, B. Carry, Barucci, Barucci, Belskaya, Birlan, Bowell, C. Dumas, C. R. Chapman, Carry, Carry, Chapman, Chapman, Clark, Conan, Conrad, Consolmagno, DeMeo, Drummond, Drummond, Drummond, Drummond, Fienga, Flynn, Fujiwara, Gaffey, H. A. Weaver, J. C. Christou, J. D. Drummond, Kryszczyńska, Lazzarin, Lazzarin, Lazzarin, Macke, Magri, Magri, McCord, Morrison, Mueller, Mugnier, Nedelcu, P. M. Tamblyn, Perna, Rivkin, Rivkin, Shepard, Tedesco, Torppa, Vernazza, Vernazza, W. J. Merline, Weaver, Zellner   +52 more
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Relationship between the Velocity Ellipsoids of Galactic-Disk Stars and their Ages and Metallicities

, 2009
The dependences of the velocity ellipsoids of F-G stars of the thin disk of the Galaxy on their ages and metallicities are analyzed based on the new version of the Geneva-Copenhagen Catalog. The age dependences of the major, middle, and minor axes of the
A. Helmi, A. J. Benson, B. Famaey, B. Nordstrom, B. R. Jorgensen, B. Salasnich, C. Babysiaux, D. Chakrabarty, G. Gilmore, G. M. Seabroke, J. Binney, J. Hanninen, J. Holmberg, K. F. Ogorodnikov, L. Girardi, M. Haywood, P. P. Parenago, R. Assian, R. Fux, R. G. Gratton, R. S. Simone De, T. Antoja, T. Bensby, T. V. Borkova, T.V. Borkova, V. A. Marsakov, V. A. Marsakov, V. A. Marsakov, V. A. Marsakov, V. A. Marsakov, V. V. Bobylev, V. V. Bobylev, V. V. Koval’, W. Dehnen, W. Dehnen, Y. Takeda   +35 more
core   +1 more source

Symphonic map from ellipsoid to ellipsoid

, 2023
In this paper, we proved the existence of Symphonic map from ellipsoid to ellipsoid. We also geive give Hopf construction of Symphonic map from ellipsoid to ellipsoid.
openaire   +2 more sources

On the Minimum Volume Covering Ellipsoid of Ellipsoids [PDF]

SIAM Journal on Optimization, 2006
Let ${\cal S}$ denote the convex hull of $m$ full-dimensional ellipsoids in $\mathbb{R}^n$. Given $\epsilon > 0$ and $\delta > 0$, we study the problems of computing a $(1+ \epsilon)$-approximation to the minimum volume covering ellipsoid of ${\cal S}$ and a $(1 + \delta)n$-rounding of ${\cal S}$.
openaire   +3 more sources