Results 81 to 90 of about 15,120 (245)
Digital computer analysis and design of a subreflector of complex shape [PDF]
Digital computer technique for computing scattered pattern of complex hyperboloid subreflector in Cassegrain antenna feed ...
Ludwig, A., Rusch, W. V. T.
core +1 more source
On the Geometry of Quantum Spheres and Hyperboloids
Advances in Applied Clifford AlgebrasAbstractWe study two classes of quantum spheres and hyperboloids, one class consisting of homogeneous spaces, which are $$*$$ ∗ -quantum spaces for the quantum orthogonal group $$\mathcal {O}(SO_q(3))$$ O
Landi, Giovanni, Pagani, Chiara
openaire +4 more sources
Journal of Experimental Orthopaedics, Volume 13, Issue 1, January 2026.Abstract Purpose To introduce a novel three‐dimensional (3D) modelling concept for lower limb alignment in total knee arthroplasty (TKA), termed neutral boundary alignment (NBA) and to present preliminary clinical data supporting this physics‐based custom alignment strategy.
Bruno Violante +6 more
wiley +1 more source
Different Transient Phenomena at the Edges of Traveling Foreshocks
Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.Abstract Past kinetic simulations and spacecraft observations have shown that traveling foreshocks (TFs) are bounded by either foreshock compressional boundaries (FCBs) or foreshock bubbles (FBs). Here we present four TFs with a different kind of structure appearing at one of their edges.
Primož Kajdič +3 more
wiley +1 more source
Study of flow around model of cooling tower by means of 2D Particle Image Velocimetry measurement
EPJ Web of Conferences, 2017 This paper deals with flow around a bluff body of hyperboloid shape. It combines results gathered in the course of research by means of Particle Image Velocimetry (PIV).
Barraclough Veronika +2 more
doaj +1 more source
Global restriction estimates for elliptic hyperboloids [PDF]
, 2022 Benjamin Baker Bruce
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A Cassegrain Antenna With Field-Controlled Reconfigurable Subreflector for HIRF Protection
IEEE Open Journal of Antennas and PropagationThis paper proposed a Cassegrain antenna with a field-controlled reconfigurable subreflector for high-intensity radiation fields (HIRF) protection. By replacing the rotating hyperboloid subreflector with a field-controlled reconfigurable metasurface, the
Zhuang Qu +5 more
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The algebra of hyperboloids of revolution
Linear Algebra and its Applications, 1985 Let A be a positive definite symmetric matrix of order m, \(J^ p_ m\) the diagonal matrix whose first m-p entries are \(+1\) and whose last p entries are -1. Defining the ''hyperbolic transpose'' by \(x^ h=(J^ p_ mx)^ t\), t the usual or ''spherical transpose'', the equation \(\sum^{m- p}_{1}x^ 2_ i-\sum^{m}_{m-p+1}x^ 2_ i=1\) of a hyperboloid of ...
Cabrera, Javier F., S. Watson, Geoffrey
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Spectroscopic sensor for measuring omnidirectional area in two-dimensional plane
Nihon Kikai Gakkai ronbunshu, 2014 This paper describes a spectroscopic sensor for measuring a wavelength of the light from objects in two-dimensional omnidirectional area. I developed the spectroscopic sensor, in which vertical slits, a horizontal slit, a cylindrical reflective grating ...
Mitsuhiro MATSUMOTO
doaj +1 more source