Results 91 to 100 of about 203 (123)
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Finite-time control for autonomous rendezvous and docking under safe constraint
, 2020The finite-time controller under safe constraint is designed for the non-cooperative space autonomous rendezvous and docking by using the artificial potential function. To facilitate the establishment of the obstacle avoidance model, the elliptic cissoid
Yong Guo +5 more
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THE DERIVATION AND APPLICATIONS OF THE CONCHOID OF NICOMEDES AND THE CISSOID OF DIOCLES
School Science and Mathematics, 1914H. Roeser
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In-Plane Quasi-Static Crushing of Cissoidal Hexagonal Honeycomb Cores
Advanced Materials Research, 2012The mechanical behaviors of cissoidal hexagonal cores (CHCs) are investigated by using the finite element (FE) simulations under the in-plane quasi-static crushing loadings. The calculated deformation processes, response curves and values of plateau stress are presented in the forms of diagrams, force-displacement curves or data tables, respectively ...
De Qiang Sun, Miao Liu, Ying Xue Zhu
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The Mathematical Gazette, 1941
The polar equation of the parabola y 2 =8ax , referred to the origin of coordinates as pole is r sin 2
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The polar equation of the parabola y 2 =8ax , referred to the origin of coordinates as pole is r sin 2
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Formation of Periodic Mosaic Structures Using Operations in Galois Fields
SymmetryMosaic ornaments and periodic geometric patterns are deeply rooted in cultural heritage and contemporary design, where symmetry plays a fundamental role in both aesthetic and cognitive perception.
D. Shaltykova +3 more
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Journal of Environmental Science and Health, Part B, 2022
Shading interferes with the weed's biology, which can change their sensitivity to post-emergence herbicides. The objective was to evaluate the control of Merremia cissoides with glyphosate in full sunlight and shade conditions in two plant growth stages (30 and 73 days after sowing (DAS)). At 30 and 73 DAS, treatments were established in a 2 × 5 and 2 ×
Guilherme A. P. Ferreira +5 more
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Shading interferes with the weed's biology, which can change their sensitivity to post-emergence herbicides. The objective was to evaluate the control of Merremia cissoides with glyphosate in full sunlight and shade conditions in two plant growth stages (30 and 73 days after sowing (DAS)). At 30 and 73 DAS, treatments were established in a 2 × 5 and 2 ×
Guilherme A. P. Ferreira +5 more
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From quadrature to integration: thirteen years in the life of the cissoid
The Mathematical Gazette, 1991In this article I shall take a problem, the quadrature of the cissoid, and compare a hard (but brilliant!) pre-calculus solution of 1658 with the easy (and routine) calculus solution of only 13 years later. Afterwards we shall perhaps see the calculus through different eyes and maybe even teach it differently.
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Acta Botanica Gallica, 2001
Two species of the genus Merremia, both native of tropical America, are cited for the first time for the flora of Benin: M. cissoides (Lam.) Hallier f. and M. quinquefolia (L.) Hallier f. A key to the nine species actually known from Benin is given. For the genus Merremia in Benin, these new introductions are the only species characterized by compound ...
Lejoly, Jean, Lisowski, Stanislas
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Two species of the genus Merremia, both native of tropical America, are cited for the first time for the flora of Benin: M. cissoides (Lam.) Hallier f. and M. quinquefolia (L.) Hallier f. A key to the nine species actually known from Benin is given. For the genus Merremia in Benin, these new introductions are the only species characterized by compound ...
Lejoly, Jean, Lisowski, Stanislas
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Journal of Fluorine Chemistry, 1992
Abstract Recently we described the unexpected concomitant formation of the ‘antigauche’ trans isomer during the synthesis of 5-fluoro-6-alkoxyuracils ( J. {Fluorine Chem., 54} (1991) 190). With respect to their conformation, in both the cis and the trans compounds, the anomeric effect (substituent at C 6 axial to N 1 ) appeared to be the ...
Gerard W.M. Visser +2 more
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Abstract Recently we described the unexpected concomitant formation of the ‘antigauche’ trans isomer during the synthesis of 5-fluoro-6-alkoxyuracils ( J. {Fluorine Chem., 54} (1991) 190). With respect to their conformation, in both the cis and the trans compounds, the anomeric effect (substituent at C 6 axial to N 1 ) appeared to be the ...
Gerard W.M. Visser +2 more
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