Results 21 to 30 of about 5,412 (286)
Nihon Kikai Gakkai ronbunshu, 2022 To improve robot manipulability, force sensing for scissors is expected to be significant. In general scissors, the moment and the crossing angle of the blade depends on the cutting position, resulting in the difference of the required input force for ...
Satsuya NODA +3 more
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The Elliptic Logarithmic Spiral [PDF]
Nature, 1922 I AM much obliged to Mr. Wright for his correction (NATURE, July 8, p. 40). I had made a search in English and Continental books on curves and concluded that this spiral had been overlooked as a curve. But it appears to have been recognised in connexion with the spherical pendulum. Prof. Lamb in his “Dynamics,” p.
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Frontiers in Energy Research, 2022 Accurate forecasting of an electric load is vital in the effective management of a power system, especially in flourishing regions. A new hybrid model called logarithmic spiral firefly algorithm-support vector regression (LS-FA-SVR) is proposed to ...
Weiguo Zhang +5 more
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Aerospace, 2015 Research on shock wave mitigation in channels has been a topic of much attention in the shock wave community. One approach to attenuate an incident shock wave is to use obstacles of various geometries arranged in different patterns. This work is inspired
Qian Wan, Veronica Eliasson
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Dynamics of an Invincible Troop Formation in Ancient Open Battlefields [PDF]
Interdisciplinary Description of Complex Systems, 2021 One of the most enthralling ancient magical battle formation tactics is the Chakravyuh -- a multilayer dynamic defensive structure, which was used in the 18-days long Kurukshetra war as described in the great Indian epic Mahabharata and in many ...
Kishore Dutta
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BMC Biology, 2021 Background A major goal of evolutionary developmental biology is to discover general models and mechanisms that create the phenotypes of organisms. However, universal models of such fundamental growth and form are rare, presumably due to the limited ...
Alistair R. Evans +9 more
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Xi'an Gongcheng Daxue xuebao, 2021 In order to solve the problem of insufficient carrier space caused by the antenna loaded inside the conical seeker, the conformal four arm conical spiral antenna which applied to the main frequency of 1.575 GHz satellite positioning communication system ...
Wei SHEN +5 more
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Zbornik radova (Građevinski fakultet Sveučilišta u Rijeci), 2022 U ovom radu detaljnije se proučavaju svojstva logaritamske spirale zadane upolarnom sustavu te je stoga u uvodu najprije ukratko objašnjen polarni sustav. Usredišnjem dijelu rada obrazloženo je svojstvo logaritamske spirale koja sve svojeradijalne zrake siječe pod istim konstantnim kutom.
Rabar, Karmen, Sošić, Milena
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Influence of Blade Profiles on Plastic Centrifugal Pump Performance
Advances in Materials Science and Engineering, 2020 To study the influence of blade profiles of the plastic centrifugal pump on pump performance, the impeller blade profiles were designed and drawn by the single arc method, double arc method, logarithmic spiral method, and B-spline curve method ...
Hui Zhang, Lingfeng Tang, Yongtao Zhao
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LOGARITHMIC SPIRAL LIGHT PIPE FOR SCINTILLATORS [PDF]
, 1960 A prccedure is described for designing and making logarithmic spiral light pipes which are to be used in coupling scintillators to photomultipliers in cases where the scintillator must be placed in a strong magnetic field. (C.J.G.
MacKay, Anthony J. +2 more
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