Results 11 to 20 of about 388,018 (266)
A circle/sphere populating method to generate 2D/3D stochastic microstructures
Heliyon, 2023 A circle/sphere populating method is proposed to generate 2D/3D stochastic microstructures. The proposed method uses circles/spheres as the basic elements and generates microstructure features through the populating process of the circles/spheres. In the
Yilin Li, Dedao Liu, Wenyi Yan
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Circle Detection Method Based on Edge Point Verification Applied to Complex Background Image [PDF]
Jisuanji gongcheng, 2018 Traditional circle detection method has several limitations in complex background,such as low accuracy,high error detection rate,high leak identification rate and low reliability.To solve these problems,a circle detection method which can be applied to ...
LI Jun,CHENG Jian
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Sign-Periodicity of Traces of Singular Moduli
Mathematics, 2013 Zagier proved that the generating functions of traces of singular values of Jm(z) are weight 3/2 weakly holomorphic modular forms. In this paper we prove that there is the sign-periodicity of traces of singular values of Jm(z).
Subong Lim, Dohoon Choi, Byungchan Kim
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Satellite Pose Estimation via Only a Single Spatial Circle
Information, 2022 To estimate the pose of satellites in space, the docking ring component has strong rigid body characteristics and can provide a fixed circular feature, which is an important object. However, due to the need for additional constraints to estimate a single
Wei Zhang, Pingguo Xiao, Junlin Li
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Quantitative relations between short intervals and exceptional sets of cubic Waring-Goldbach problem
Open Mathematics, 2017 In this paper, we are able to prove that almost all integers n satisfying some necessary congruence conditions are the sum of j almost equal prime cubes with j = 7, 8, i.e., N=p13+…+pj3$\begin{array}{} N=p_1^3+ \ldots +p_j^3 \end{array} $ with |pi−(N ...
Feng Zhao
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Improved hysteresis circle current control method for active power filter
Gong-kuang zidonghua, 2014 Hysteresis circle current control method with variable circle width of shunt active power filter not only ensures tracking accuracy of reference current, but controls switching frequency of inverter effectively through adjusting hysteresis circle width ...
YANG Lingxiao, HE Zhiwei
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An Anti-Noise Fast Circle Detection Method Using Five-Quadrant Segmentation
Sensors, 2023 Extracting circle information from images has always been a basic problem in computer vision. Common circle detection algorithms have some defects, such as poor noise resistance and slow computation speed.
Yun Ou +4 more
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Phase space methods for particles on a circle [PDF]
Journal of Mathematical Physics, 2003 The phase space S×Z for a particle on a circle is considered. Displacement operators in this phase space are introduced and their properties are studied. Wigner and Weyl functions in this context are also considered and their physical interpretation and properties are discussed.
Zhang, S., Vourdas, A.
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On pairs of equations in unlike powers of primes and powers of 2
Open Mathematics, 2017 In this paper, we obtained that when k = 455, every pair of large even integers satisfying some necessary conditions can be represented in the form of a pair of unlike powers of primes and k powers of 2.
Hu Liqun, Yang Li
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Positioning Accuracy Model of Sailing‐Circle GPS‐Acoustic Method
Earth and Space Science, 2021 Sailing‐circle GPS‐acoustic method, prevalently applied for measuring ocean floor crustal deformation, allows the precise positioning of an underwater transponder in a global frame.
Xinhua Chen +4 more
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