نتایج جستجو برای: roundness factor

تعداد نتایج: 844816  

2008
Jean-Daniel Stanley

The greatest change in particle roundness, sphericity, and size in most fluvial systems generally occurs in the initial first few kilometers of sediment transport. Observations in natural settings and laboratory experiments have shown that changes, such as increased gi'ain rounding and decreased size due to particle breakage, wear, and attrition, tend to be progz'essive along the dispersal path...

Journal: :Journal of the Japan Society for Precision Engineering 1986

2016
Eun Young Chae Woo Kyung Moon Hak Hee Kim Won Hwa Kim Joo Hee Cha Hee Jung Shin Woo Jung Choi Wonshik Han Dong-Young Noh Sae Byul Lee Sei Hyun Ahn

A multigene expression assay corresponds to the likelihood of breast cancer recurrence after the initial diagnosis and can be used to guide the decision for additional chemotherapy. However, only few studies have investigated the associations between the imaging features of breast cancer and the results of multigene expression assays. Our study was to identify the relationship between imaging f...

Journal: :Involve, a Journal of Mathematics 2010

2013
Diana M. Thomas Carl Bredlau Anja Bosy-Westphal Manfred Mueller Wei Shen Dympna Gallagher Yuna Maeda Andrew McDougall Courtney M. Peterson Eric Ravussin Steven B. Heymsfield

OBJECTIVE To develop a new geometrical index that combines height, waist circumference (WC), and hip circumference (HC) and relate this index to total and visceral body fat. DESIGN AND METHODS Subject data were pooled from three databases that contained demographic, anthropometric, dual energy X-ray absorptiometry (DXA) measured fat mass, and magnetic resonance imaging measured visceral adipo...

Journal: :Journal of Mathematical Analysis and Applications 2000

Journal: :Geometriae Dedicata 2006

2012
Daniel C. H. Schleicher Bernhard G. Zagar Yung-Sheng Chen

In this chapter a particular image processing problem existing in quality assurance for steel industry is addressed. Since the quality standards in steel industry are ever increasing, even steel industry starts to use machine vision systems to monitor their product quality. In case of steel coils a particular figure of merit in quality is the roundness (ellipticity) or lack thereof of the coil....

2012
R. S. LAUGESEN

We prove sharp bounds on eigenvalues of the Laplacian that complement the Faber–Krahn and Luttinger inequalities. In particular, we prove that the ball maximizes the first eigenvalue and minimizes the spectral zeta function and heat trace. The normalization on the domain incorporates volume and a computable geometric factor that measures the deviation of the domain from roundness, in terms of m...

2015
Zhou-Xin Ren Hai-Bin Yu Jian-Sheng Li Jun-Ling Shen Wen-Sen Du

Evaluation of morphological changes in cells is an integral part of study on epithelial to mesenchymal transition (EMT), however, only a few papers reported the changes in quantitative parameters and no article compared different parameters for demanding better parameters. In the study, the purpose was to investigate suitable parameters for quantitative evaluation of EMT morphological changes. ...

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