Results 21 to 30 of about 139 (117)
On Sharp Estimate of Third Hankel Determinant for a Subclass of Starlike Functions
Fractal and Fractional, 2022 In our present investigation, a subclass of starlike function Sn−1,L* connected with a domain bounded by an epicycloid with n−1 cusps was considered. The main work is to investigate some coefficient inequalities, and second and third Hankel determinants ...
Lei Shi +4 more
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Geometric design and dynamic characteristics of a novel abnormal cycloidal gear reducer
Advances in Mechanical Engineering, 2023 A precision reducer with a high ratio and a small size is essential for precise control of the position of a robotic arm. The rotate vector (RV) is a reducer widely applied in robotic joints. However, its complex structure, over-positioning and difficult
Jingyu Mo +5 more
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Epihypocurves and epihypocyclic surfaces with arbitrary base curve
Structural Mechanics of Engineering Constructions and Buildings, 2021 If a circle rolls around another motionless circle then a point bind with the rolling circle forms a curve. It is called epicycloid, if a circle is rolling outside the motionless circle; it is called hypocycloid if the circle is rolling inside the ...
Vyacheslav N. Ivanov
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Dimer models and conformal structures
Communications on Pure and Applied Mathematics, Volume 79, Issue 2, Page 340-446, February 2026.Abstract Dimer models have been the focus of intense research efforts over the last years. Our paper grew out of an effort to develop new methods to study minimizers or the asymptotic height functions of general dimer models and the geometry of their frozen boundaries.
Kari Astala +3 more
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LABORATORY STUDIES OF A SINGLE-DISC COULTER WITH EPICYCLOIDAL GROOVES
Niva Povolzhya, 2023 The aim of the research was to improve the quality of sowing of spring wheat of the Zlata variety with a pneumatic seeder with a developed single-disc coulter with grooves in the form of an epicycloid, which allows to increase the uniformity of seed distribution over the sowing depth.
V.A. SIPUNOV, V.V. SHUMAEV
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Frontiers in Mechanical Engineering, 2023 The application of hydro turbines for harnessing water energy within distribution networks, as an alternative to pressure relief valves, is steadily increasing.
Iman Baratian +2 more
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Journal of Function Spaces, Volume 2026, Issue 1, 2026.In geometric function theory and complex analysis, analytic functions exhibiting geometric symmetry play a fundamental role. However, investigations concerning multileaf domains, particularly those with fivefold rotational symmetry, have been relatively limited.
Suad Al-Mayyahi +4 more
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Shock and Vibration, Volume 2025, Issue 1, 2025.Centrifugal pendulum vibration absorbers (CPVA) are passive order‐tuned mechanisms with absorber masses swinging along their specific paths. Their motion is limited by end‐stops preventing undesired impacts due to rotor‐to‐absorber and absorber‐to‐absorber contacts. Absorber to end‐stop impacts occur especially during transient operating regimes taking
Bahadir Sarikaya +5 more
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Godard’s atlas: an epicycloidal reading
Revista Crítica Cultural, 2016 This essay aims to correlate the warburguian montage in Jean-Luc Godard’s The old place with the concept of epicycloid developed by Araripe Júnior as a reference to the movement of cultural transformation: if, in Mnemosyne, Warburg discovers new meanings to images through their transpositions and recombinations, one can see this process as the ...
Borges, Luiza de Aguiar +1 more
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The Analysis of the Gear Profile of A Rolling-Friction Cycloid Speed Reducer
Jixie chuandong, 1995 The rolling-friction cycloid speed reducer has two kinds of tooth profiles─a hypocycloid and an epicycloid. Although their characteristics are diffenent, they both have same overcutting problem.
Lin Jing, et al.
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