Results 11 to 20 of about 1,741,837 (286)

A pair of equations in unlike powers of primes and powers of 2

open access: yesOpen Mathematics, 2020
In this article, we show that every pair of large even integers satisfying some necessary conditions can be represented in the form of a pair of one prime, one prime squares, two prime cubes, and 187 powers of 2.
Cai Yong, Hu Liqun
doaj   +1 more source

Heterotic Matrix theory with Wilson lines on the lightlike circle [PDF]

open access: yes, 1998
We develop a matrix model for the SO(32) Heterotic string with certain Wilson lines on the lightlike circle. This is done by using appropriate T-dualities. The method works for an infinite number of Wilson lines, but not for all.
Banks   +22 more
core   +2 more sources

Averages Along the Primes: Improving and Sparse Bounds

open access: yesConcrete Operators, 2020
Consider averages along the prime integers ℙ given ...
Han Rui   +3 more
doaj   +1 more source

A Novel Four-Step Algorithm for Detecting a Single Circle in Complex Images

open access: yesSensors, 2023
Single-circle detection is vital in industrial automation, intelligent navigation, and structural health monitoring. In these fields, the circle is usually present in images with complex textures, multiple contours, and mass noise. However, commonly used
Jianan Cao, Yue Gao, Chuanyang Wang
doaj   +1 more source

Evaluating the Performance of a Magnetic Nanoparticle-Based Detection Method Using Circle-to-Circle Amplification

open access: yesBiosensors, 2021
This work explores several issues of importance for the development of a diagnostic method based on circle-to-circle amplification (C2CA) and oligonucleotide-functionalized magnetic nanoparticles.
Darío Sánchez Martín   +2 more
doaj   +1 more source

A motivic circle method

open access: yes, 2023
55 pages; accepted ...
Bilu, Margaret, Browning, Tim
openaire   +2 more sources

Helix angle measurement method based on end face and side image processing of helical gear

open access: yesXi'an Gongcheng Daxue xuebao, 2021
The helix angle measurement of helical gear is difficult and the measurement process is complex. In order to improve the measurement accuracy and efficiency, the method of measuring helix angle of helical gear is proposed, by using two cameras to collect
Shuanjun SONG   +4 more
doaj   +1 more source

Circle Detection Method Based on Edge Point Verification Applied to Complex Background Image [PDF]

open access: yesJisuanji 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
doaj   +1 more source

A circle/sphere populating method to generate 2D/3D stochastic microstructures

open access: yesHeliyon, 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
doaj   +1 more source

Satellite Pose Estimation via Only a Single Spatial Circle

open access: yesInformation, 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
doaj   +1 more source

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