Efficient position for spheres and surfaces
Conchoid surfaces of spheres
... for spheres and have shown that a sphere in R 3 admits a rational polar representation with respect to an arbitrary chosen focus point, which implies that the conchoid surfaces of spheres possess ...
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Rational two-parameter families of spheres and rational offset surfaces
... offset surfaces admit rational param- eterizations if and only if Φ is a rational sub-variety of a ratio- nal isotropic hyper-surface in R 4 ...envelope surfaces Ψ and rational offset surfaces in R 3 ...
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On the moduli space of superminimal surfaces in spheres
... using Clifford algebras. Unfortunately their methods do not help in the study of the moduli space since the degree of the maps is not under control. In this paper, we show that it is possible to use the same strategy for ...
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Music of the Spheres
... high-energy efficient glass in three shades of green, creating an additional pattern in the glazing ...concave surfaces can cause problems, as they may focus the sound in certain areas while leaving others ...
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Design and Synthesis of TiO 2 Hollow Spheres with Spatially Separated Dual Cocatalysts for Efficient Photocatalytic Hydrogen Production
... Nanomaterials 2017, 7, 24 2 of 10 The space locations of the cocatalysts loaded on the photocatalytic materials can greatly affect the migration of the photogenerated carriers and then further affect the photocatalytic ...
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CiteSeerX — EXOTIC SPHERES AND CURVATURE
... for surfaces says that every closed compact surface admits a metric with constant Gaussian ...compact surfaces admitting a metric of strictly positive Gaussian curvature are the 2-sphere and the real ...
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Efficient simplification of point-sampled surfaces
... In this paper we introduce, analyze and quantitatively compare a number of surface simplification methods for point-sampled geometry. We have implemented incremental and hierarchical clustering, iterative simplification, ...
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Efficient Light Scattering from Nanochains Encapsulated in SnO2 Hollow Spheres
... Finally, the SnO 2 nanochains@hollow spheres were obtained after removing the MS template spheres with HF solution for 24 h. Figure 2 shows the XRD pattern of the as-prepared SnO 2 nanochains@hollow ...
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Hollow Fe3O4 Spheres as Efficient Sulfur Host for Advanced Electrochemical Energy Storage
... 2. EXPERIEMENTAL 2.1. Preparation of S@HFS composite Polystyrene, FeCl 3 ·6H 2 O, FeCl 2 ·4H 2 O and polyvinyl pyrrolidone were purchased from Shanghai Huayi Group. Ammonia, ethanol and sublimed sulfur were purchased ...
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Relativistic plasma surfaces as an efficient second harmonic generator
... and position, respectively, and θ is the angle of ...retarded position is the position of the surface when the laser light that passed a fixed point at time t reflects off ...This position is ...
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Efficient quadrature rules for subdivision surfaces in isogeometric analysis
... subdivision surfaces based on quad meshes in the context of isogeometric ...such surfaces rely on per-quad integration, which is inefficient and typically also inaccurate near vertices where other than four ...
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Compression of parametric surfaces for efficient 3D model coding
... several efficient compression techniques have been proposed in the recent ...parametric surfaces, which have several advantages over polygonal meshes, such as resolution independence and a more compact ...
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Celestial Spheres
... What is his motivation, however? The debate over universal hylomorphism is primarily about metaphysics, with physics, as it were, only a tangential concern. The conclusion that angels have bodies is merely a byproduct of ...
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Hierarchical Heterostructure of ZnO@TiO2 Hollow Spheres for Highly Efficient Photocatalytic Hydrogen Evolution
... hollow spheres yielded the highest photocurrent density of ...hollow spheres reached to ...low spheres could significantly enhance the H 2 evolution activity and the sample with ...
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CiteSeerX — Efficient, Fair Interpolation using Catmull-Clark Surfaces
... The surfaces pro- duced are the most impressive to date, but improved shape and arbitrary genus are obtained at the expense of dramat- ically increased running ...constructs surfaces that are only ...
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An efficient data structure for calculation of unstructured T-spline surfaces
... an efficient data structure for calculation of unstructured T-spline surfaces is developed, by which any complex T-spline surface models can be easily and efficiently ...
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Error analysis of efficient evaluation algorithms for tensor product surfaces
... When evaluating the bivariate polynomial G(x, y) in Example 12 the DP algorithm has better precision than the Wang–Ball algorithm and the Horner-type algorithm presents again the worst behaviour of the considered ...
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Hierarchically Constructed TiO2 Spheres as Efficient Polysulfide Barrier for High-Performance Li-S Battery
... 2 spheres are prepared and used host materials for sulfur ...2 spheres serves as the host material, which could efficiently stabilize the polysulfide at the cathode ...
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Evaluating the Efficient Market Hypothesis by means of isoquantile surfaces and the Hurst exponent
... Isoquantile shapes for BET differ from circles in multiple lags (of 2, 3, 4, 11 and 13 weeks): the deviations are distinctive, which suggests short-time dependency in the data. The isoquantile shapes of the PX Index, BUX ...
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Efficient boundary integral solution for acoustic wave scattering by irregular surfaces
... We now consider the application of the code to larger surfaces, in order further to examine timings and rates of convergence as functions of incident angle. Evaluations of the first iterates were carried out for ...
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