Results 21 to 30 of about 45,599 (265)
Gravity data reduction, Bouguer anomaly, and gravity disturbance
Геофизический журнал, 2023 Each point on the earth has a gravity and gravity potential value. Surfaces formed by connecting points with equal gravity potential values are called equipotential surfaces or level surfaces.
Yi. Nazan
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Packing Ellipsoids with Overlap [PDF]
SIAM Review, 2013 The problem of packing ellipsoids of different sizes and shapes into an ellipsoidal container so as to minimize a measure of overlap between ellipsoids is considered. A bilevel optimization formulation is given, together with an algorithm for the general case and a simpler algorithm for the special case in which all ellipsoids are in fact spheres ...
Caroline Uhler, Stephen J. Wright 0001
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Frontiers in Water, 2021 Many particulate pollutants in the environment exist in non-spherical shape, but the influences of particle shape on pollutant migration and removal in groundwater systems are not well-understood.
Ke Li, Huilian Ma
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Structure model index does not measure rods and plates in trabecular bone
Frontiers in Endocrinology, 2015 Structure model index (SMI) is widely used to measure rods and plates in trabecular bone. It exploits the change in surface curvature that occurs as a structure varies from spherical (SMI = 4), to cylindrical (SMI = 3) to planar (SMI = 0).
Phil L Salmon +5 more
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Earth's curvature and visibility between two points [PDF]
Vojnotehnički Glasnik, 2012 In this study, the Earth's curvature is analyzed from numerous aspects as well as the visibility between two points on the Earth's surface. It also describes the way and the size of the Earth's part which can be approximated in the plane depending on the
Mirko A. Borisov, Radoje D. Banković
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On the ellipsoid and plane intersection equation
上海师范大学学报. 自然科学版, 2018 Let E:(x2)/a2+(y2)/b2+(z2)/c2=1 be an ellipsoid and P:px+qy+rz=d be a plane.Based on the Householder transformation,it is shown that the intersection E∩P is nonempty if and only if λ ≥ |d|,where λ=√(ap)2+(bq)2+(cr)2.When λ>|d|,this paper provides a
Huang Yihong, Xu Qingxiang
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John and Loewner Ellipsoids [PDF]
Discrete & Computational Geometry, 2011 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Electromagnetic imaging of ellipsoids and ellipsoidal bosses [PDF]
The Quarterly Journal of Mechanics and Applied Mathematics, 1998 This paper considers the inverse scattering problem to determine the geometrical characteristics of a perfectly conducting ellipsoid or ellipsoidal boss from the first coefficient in the low frequency expansion of the scattering amplitude. For the ellipsoid, measurements corresponding to six directions of incidence are sufficient to determine ...
Dassios, George, Lucas, R. J.
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The Closest and Farthest Points to an Affine Ellipse or Ellipsoid
Tsinghua Science and Technology, 2012 Affine ellipses/ellipsoids based bounding volumes are widely used in various graphics applications, such as ray tracing and collision detection. They provide a much tighter fit than the regular ellipses/ellipsoids.
Shuangmin Chen +3 more
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An Investigation on the Effective Mass of the Robot: Dependence on the End-Effector Position
Engineering Transactions, 2021 In this paper, the mathematical analysis of the robot effective mass is presented. The calculation of this effective mass and its ellipsoid are included.
Abdel-Nasser SHARKAWY
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