Results 21 to 30 of about 159,843 (190)
Generalizing Ellipsoidal Growth [PDF]
Materials Research, 2019 تعمم هذه الورقة العمل السابق لريوس وفيلا على النمو الكروي. تنطبق المعادلة المعممة على نواة المجسمات الإهليلجية وفقًا لعملية نقطة بواسون غير المتجانسة. تتم محاكاة التطور البنيوي الدقيق في ثلاثة أبعاد للنواة وتحولات نمو القطع الناقص باستخدام طريقة المخروط السببي. في المحاكاة، تقع النوى في الفضاء وفقًا لعملية نقطة بواسون غير المتجانسة.
Gabriella Maria Silveira de Sá +6 more
openaire +5 more sources
On the Use of Minimum Volume Ellipsoids and Symplectic Capacities for Studying Classical Uncertainties for Joint Position-Momentum Measurements [PDF]
, 2010 We study the minimum volume ellipsoid estimator associates to a cloud of points in phase space. Using as a natural measure of uncertainty the symplectic capacity of the covariance ellipsoid we find that classical uncertainties obey relations similar to ...
Angelow A +11 more
core +1 more source
Reduction of geodetic observations to the reference ellipsoid
Vojnotehnički Glasnik, 2011 Field observations refer to the vertical of the geoid, because the geodetic instruments are put in the working position in respect to the vertical. It is not appropriate for the calculations on the ellipsoid surface, which request measured elements to be
Stevan M. Radojčić
doaj +1 more source
Вестник Дагестанского государственного технического университета: Технические науки, 2022 Objective. The aim of the study is to develop methods for determining the coordinates of the hypocenter of an earthquake with a known structure of the earth's crust. Method.
T. G. Aslanov, Yu. A. Sidorkina
doaj +1 more source
Scalable Ellipsoidal Classification for Bipartite Quantum States [PDF]
, 2008 The Separability Problem is approached from the perspective of Ellipsoidal Classification. A Density Operator of dimension N can be represented as a vector in a real vector space of dimension $N^{2}- 1$, whose components are the projections of the matrix
A. Holevo +2 more
core +1 more source
Mathematics, 2023 A positively invariant set is an important concept in dynamical systems. The study of positively invariant set conditions for discrete-time systems is one interesting topic in both theoretical studies and practical applications research.
Yuyao Lei +2 more
doaj +1 more source
A variational problem on Stiefel manifolds [PDF]
, 2006 In their paper on discrete analogues of some classical systems such as the rigid body and the geodesic flow on an ellipsoid, Moser and Veselov introduced their analysis in the general context of flows on Stiefel manifolds.
Amit K Sanyal +12 more
core +2 more sources
Mathematics, 2023 The gravity force of a gravity field generated by a non-rotating level ellipsoid of revolution enclosing mass M is given as a solution of a partial differential equation along with a boundary condition of Dirichlet type. The partial differential equation
Gerassimos Manoussakis
doaj +1 more source
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
doaj +1 more source
Ellipsoidal Collapse and Previrialization [PDF]
The Astronomical Journal, 2001 We study the non-linear evolution of a dust ellipsoid,embedded in a Friedmann flat background universe, in order to determine the evolution of the density of the ellipsoid as the perturbation to it related detaches from general expansion and begins to collapse.
Del Popolo, A, Ercan, EN, Xia, Z
openaire +4 more sources