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9 912 (0,23s) •

Result

Separable Spherical Constraints and the Decrease of a Quadratic Function in the Gradient Projection Step

constraints are valid for more general feasible sets including those defined by separable spherical constraints. The result is useful for the development of in a sense optimal algorithms for the solution of some QPQC probl...

BA - Obecná matematika

  • 2013
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Result

An Optimal Algorithm with Barzilai-Borwein Steplength and Superrelaxation for QPQC Problem

We propose a modification of MPGP algorithm for solving minimizing problem of strictly convex quadratic function subject to separable spherical constraints. This active set based algorithm explores the faces by the conjugate gradien...

BA - Obecná matematika

  • 2013
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Result

An optimal algorithm and superrelaxation for minimization of a quadratic function subject to separable convex constraints with applications

We propose a modification of our MPGP algorithm for the solution of bound constrained quadratic programming problems so that it can be used for minimization of a strictly convex quadratic function subject to separable convex constraints. Our...

BA - Obecná matematika

  • 2012
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Result

Canonical Quantization of Spherically Symmetric Non-Vacuum Black Hole Spacetimes

Canonical quantization of spacetimes leads to numerous problems some of which are already present on classical level and the others emerge from the used quantization process. We will present a quantization of spherically symmetric spacetimes...

Physical sciences

  • 2019
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Result

Egg shape and size allometry in geckos (Squamata : Gekkota), lizards with contrasting eggshell structure: why lay spherical eggs?

Egg size and shape allometry in geckos...

EH - Ekologie – společenstva

  • 2006
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Result

MINIMIZATION OF A CONVEX QUADRATIC FUNCTION SUBJECT TO SEPARABLE CONICAL CONSTRAINTS IN GRANULAR DYNAMICS

The numerical solution of granular dynamics problems with Coulomb friction leads to the problem of minimizing a convex quadratic function with semidefinite Hessian subject to a separable conical constraints. In this paper, we are interested ...

BA - Obecná matematika

  • 2015
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Result

Gibbs-Appel formulation of non-holonomic motion of a ball on a spherical surface

A new type of a passive vibration absorber is proposed and investigated as a non-linear non-holonomic system. It consists of a semi-spherical horizontal cavity in which a ball of a smaller diameter is rolling. The system of six degrees of fr...

JM - Inženýrské stavitelství

  • 2016
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Result

Mass and spin constraint on black holes in long GRBs

We compute the evolution of a quasi-spherical, slowly rotating accretion flownaround a black hole, whose mass and spin evolve adequately to the mass-energyntransfer through the horizon. Our model is relevant for the central engine drivingna ...

Astronomy (including astrophysics,space science)

  • 2020
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Result

Joint Orientation of Epipoles

It is known that epipolar constraint can be augmented with orientation by formulating it in the oriented projective geometry. This oriented epipolar constraint requires knowing the orientations (signs of overall scales) of epipoles ...

JD - Využití počítačů, robotika a její aplikace

  • 2003
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Result

Non-holonomic dynamics of a ball moving inside a spherical cavity

is rolling. In the paper, the response of a heavy ball rolling inside a semi-spherical degrees of freedom with three non-holonomic constraints is considered. The contact strategy declines the Lagrangian procedure including conventi...

Construction engineering, Municipal and structural engineering

  • 2017
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