Results 21 to 30 of about 36,624 (293)
Geometrical analysis for assessing torsional alignment of humerus
BMC Musculoskeletal Disorders, 2020 Background Compared to other types of surgeries, minimally invasive surgeries (MISs) of humeral shaft fractures are associated with less radial nerve injury, less soft tissue injury and higher union rate.
Yo-Lun Chu +4 more
doaj +1 more source
Asymmetric regular sampling SPWM method based on tangent approximation algorithm
Zhongguo Jianchuan Yanjiu, 2020 Objectives In order to improve the quality of sinusoidal waveform output by the ship's high-frequency inverter charging device and reduce the CPU occupancy rate, an asymmetric regular sampling sinusoidal pulse width modulation (SPWM) method based on ...
LI Wei +4 more
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Tangent Lines and Planes in Topological Spaces [PDF]
Transactions of the American Mathematical Society, 1937 The object of this paper is to extend to topological spaces some of the concepts and theorems of direct infinitesimal geometry. To attain this object we define certain point sets in a topological space which will play the role of lines, planes, and hyperplanes in Euclidean space.
openaire +2 more sources
Instrumental Genesis of the Concept of Tangent Line [PDF]
, 2018 El objetivo de esta investigación es identificar características del proceso de génesis instrumental en el aprendizaje del concepto de recta tangente a una curva cuando se usa GeoGebra como recurso tecnológico.
Boigues, Francisco José +4 more
core +1 more source
Comparison of the MIPAS products obtained by four different level 2 processors
Annals of Geophysics, 2014 MIPAS is a midinfrared Fourier Transform spectrometer that sounded the atmospheric emission at limb onboard the ENVISAT satellite. It was launched on 31 March 2002 in a sun-synchronous polar orbit of about 800 km altitude and operated until 8 April 2012.
Piera Raspollini +10 more
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EQUATION OF A TANGENT AN AXIOM FOR THE STRAIGHT LINE [PDF]
School Science and Mathematics, 1906 n ...
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Construction of Developable Surface with Geodesic or Line of Curvature Coordinates
Journal of New Theory, 2021 In this paper, a developable surface with geodesic or line of curvature coordinates is constructed in the Euclidean 3-space. A developable surface is coordinated by two families of parametric curves, base curves (directrices) and lines (rulings).
Nabil Althibany
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Higher Order, Planar Tangent-Line Envelope Curvature Theory
, 1979 Following the analogy of higher order point-path generation, new concepts for tangent-line higher order envelope curvature theory are introduced. Mathematical relationships are derived to define, using the instantaneous invariants and the stretch ...
M. N. Siddhanty, K. L. Ting, A. H. Soni
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Lines and free line segments tangent to arbitrary three-dimensional convex polyhedra [PDF]
, 2006 . Motivated by visibility problems in three dimensions, we investigate the complexity and construction of the set of tangent lines in a scene of three-dimensional polyhedra.
Na, Hyeon-Suk +16 more
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Performance Analysis of Abradable Coating Systems for Aircraft Gas Turbines
Advanced Engineering Materials, EarlyView.Three CoNiCrAlY/YSZ/MgAl2O4 abradable liner configurations on a nickel‐superalloy are evaluated by thermal‐gradient cycling and incursion tests. Laser ablation of the bondcoat and/or Y2O3‐stabilized ZrO2 (YSZ) intermediate layer increases mechanical interlocking and bonding for thick topcoats.
Hanna Heyl +4 more
wiley +1 more source