Results 11 to 20 of about 1,747,809 (284)

A new circle method for measuring humeral torsion on MRI-scans less sensitive to Hill-Sachs lesions [PDF]

open access: yesEuropean Journal of Radiology Open, 2023
Objectives: The literature on humeral torsion angles (retrotorsion) reveals great inconsistencies between methodology and values. Decreased retrotorsion was suspected to correlate with instability, but evidence is contradictory. The measurement according
Stefan Demarmels   +4 more
doaj   +2 more sources

The “angle” method of calculating glenoid bone loss: a validation study and review of current methods [PDF]

open access: yesJSES International
Hypothesis/Background: This study compares our “angle” method to the ''best-fit circle'' method and examines existing literature on glenoid bone loss measurement.
Lewis L. Shi, MD   +3 more
doaj   +2 more sources

The exceptional sets of a Waring-Goldbach problem with unequal powers

open access: yesXi'an Gongcheng Daxue xuebao, 2021
The representability of positive odd number n=p1+P32+p3k(k∈N and k≥4) was studied. The circle method in additive number theory and the iterative method in the circle method were used to deal with the main arcs and the exponential sum method was used to ...
Doudou ZHU
doaj   +1 more source

A metaheuristic algorithm for the carry-over effect value minimization problem in round-robin tournaments

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2022
Round­robin tournaments are widely used in sports leagues such as football and baseball leagues. The round­robin tournament scheduling problem is one of the most well­known problems in sports scheduling.
Yunjian CAO, Wei WU, Mutsunori YAGIURA
doaj   +1 more source

Effectiveness of Using Center and Circle Methods to Increase Interest in Learning Early in Children

open access: yesChild Education Journal, 2022
The purpose of this study was to determine the effectiveness of the Center and Circle method as an effort to increase interest in early childhood learning. The research subjects were children in KB TK Almutaqin Yogyakarta.
Titik Mulat Widyastuti   +1 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

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

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

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

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

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