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Showing 1 to 18 of 18 for “"Quadric"”.
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Algebraic criteria for quadric surfaces
Not available
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On Four Parameter Families of Quadric Surfaces
Made available in DSpace on 2014-12-05T21:50:07Z (GMT). No. of bitstreams: 1 0018160.pdf: 3198812 bytes, checksum: f88913e6906adab196a2b0c4a0f3af52 (MD5) Previous issue date: 1956
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Zjednodušování polygonálních sítí a optimalizace vykreslování pomocí technik Level of Detail
… Vertex Clustering, Floating Cell Clustering a Quadric Error Metrics. Tyto metody jsou následně porovnány pomocí metrik Hausdorffovy vzdálenosti a RMSE (Root Mean Squared Error). Výsledky prokazují, že nejvyšší geometrickou věrnost původnímu modelu zachovává zjednodušení dle metriky Quadric …
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The group of the Mondello BLT-sets
… is a set of (q+1) points of a Q(4,q) parabolic quadric with a collinearity condition. There are many infinite families of BLT-sets, all of which have had their stabilizers computed except for the Mondello BLT-sets of Penttila. Following an introduction to, and survey of BLT-sets and their …
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Extremal Discs and CR Geometry
… needed to describe extremal discs attached to a quadric. We point out some consequences. (2) A continuation result for a CR map. Let M be an analytic, strictly pseudoconvex, connected, generic manifold with generating Levi form, of codimension two in C 4. Let U be an open set in M. We prove that …
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Autonomous tactile object exploration and estimation using simple sensors
… on a stepper motor robot. A Kalman filter based quadric shape estimator was then used to describe the objects encountered in the MERLIN's workspace. The minimization of a cost function based on the shape estimator's uncertainty guided the robot along an exploration trajectory designed to produce …
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Lifts of Frobenius on Arithmetic Jet Spaces of Schemes
… Frobenius on the first jet space of any smooth quadric hypersurface in projective space.
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Representation theory of the global Cherednik algebra
… of Cherednik algebras associated to a smooth quadric hypersurface of Pn to the Dunkl angular momentum algebra of Feigin-Hakobyan. In particular, this lets us relate the angular momentum algebra for a rank 3 Coxeter group to the rank 2 symplectic reflection algebra for a corresponding finite …
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Vertex algebras generated by primary fields of low conformal weight
… to the Lie algebra 0 acts transitively on the quadric ... This generalizes a similar result of Kac in the case of conformal algebras. Using this observation, we will classify vertex algebras satisfying the above assumptions, by using the classification of connected compact subgroups of SON …
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Complete Mirror Pairs and Their Naive Stringy Hodge Numbers
… complete intersection of a quintic</p><p>and a quadric in $\PP_{211111}^5$. We construct $2152$ distinct examples of</p><p>complete mirror pairs and $1077$ distinct examples of dual pairs of almost</p><p>reflexive Gorenstein cones. Additionally, we propose a generalization of Batyrev</p><p>and …
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Design and Control of Capacitive Power Transfer Systems
… and applied to CPT systems. Firstly, a Linear Quadric Gauss (LQG) optimal control approach was explained and an LQG controller was designed. After that, a robust H1 output feedback controller was developed. In this design, the variations in the coupling capacitors and the load are described as …
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Effect of self-stratification of sediment suspensions in turbulent plane Couette flow
… The eddy viscosity profile can be fitted to a quadric polynomial, similar to the parabolic profile in open channel flow. Based on this, the equilibrium sediment concentration profile for cases of negligible stratification effect can be derived in a similar way to the Rousean profile for open …
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The polyhedral structure of certain combinatorial optimization problems with application to a naval defense problem
… we present a new class of facets for the boolean quadric polytope, obtained by applying a simultaneous lifting procedure. The strong valid inequalities developed in Part I, such as facets and cutting planes, can be implemented for obtaining exact and approximate solutions for various combinatorial …
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3D Morphable Models: Data Pre-Processing, Statistical Analysis and Fitting
… and we show that the expected value of the Quadric Error Metric can be computed in closed form for a linear deformable model. The simplified models can used to achieve efficient multiscale fitting and super-resolution. In Chapter 6 we consider the problem of model dominance and show how …
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The development and application of a simultaneous two-way coupled, discrete element method and smoothed particle hydrodynamic model for spatial scale-up dynamics of laboratory vertical stirred media detritors
… a methodology to model media shapes as super quadric surfaces is developed and implemented. The DEM-SPH model is assessed through analysis of the effects of key variables to gauge its performance prediction capabilities on the largest mill size before its application in the scale-up study. The …
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Derived categories of coherent sheaves on rational homogeneous manifolds
… this result to flag manifolds of type $A_n$ and quadrics. In another direction, Y. Kawamata has recently proven existence of complete exceptional sequences on toric varieties. Starting point of the present work is a conjecture of F. Catanese which says that on every rational homogeneous manifold …
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Syzygies and implicitization of tensor product surfaces
A tensor product surface is the closure of the image of a rational map λ : P1 ×P1-->P3. These surfaces arise in geometric modeling and in this context it is useful to know the implicit equation of λ in P3. Currently, syzygies and Rees algebras provide the fastest and most versatile method to find …