scholarly journals Electrostatic capacity and measure of asymmetry

2019 ◽  
Vol 147 (9) ◽  
pp. 4007-4019
Author(s):  
HaiLin Jin
Keyword(s):  
Measure Of Asymmetry

A measure of asymmetry

2011 ◽  
Vol 53 (4) ◽  
pp. 971-985 ◽  
Author(s):  
P. N. Patil ◽  
P. P. Patil ◽  
D. Bagkavos
Keyword(s):  
Measure Of Asymmetry

A measure of asymmetry for ordinal square contingency tables with an application to modified LANZA score data

2019 ◽  
Vol 47 (7) ◽  
pp. 1251-1260
Author(s):  
Satoru Shinoda ◽  
Kouji Yamamoto ◽  
Kouji Tahata ◽  
Sadao Tomizawa
Keyword(s):  
Contingency Tables ◽  
Measure Of Asymmetry ◽  
Modified Lanza Score

Groemer–Wallen measure of asymmetry for Reuleaux polygons

2017 ◽  
Vol 108 (3) ◽  
pp. 879-884
Author(s):  
Peng Zhan Guo ◽  
Hai Lin Jin
Keyword(s):  
Measure Of Asymmetry ◽  
Reuleaux Polygons

Dermatoglyphic Pattern Types in Subjects with Nonsyndromic Cleft Lip with or without Cleft Palate (CL/P) and Their Unaffected Relatives in the Philippines

2005 ◽  
Vol 42 (4) ◽  
pp. 362-366 ◽  
Author(s):  
Nicole M. Scott ◽  
Seth M. Weinberg ◽  
Katherine Neiswanger ◽  
Sandra Daack-Hirsch ◽  
Sarah O'Brien ◽  
...  
Keyword(s):  
Cleft Palate ◽  
Cleft Lip ◽  
Major Effect ◽  
The Philippines ◽  
Chi Square ◽  
Ulnar Loop ◽  
Unaffected Control ◽  
Measure Of Asymmetry ◽  
Student’S T ◽  
Female Subjects

Objective To investigate dermatoglyphic patterns in 95 nonsyndromic Filipino subjects with nonsyndromic cleft lip with or without cleft palate (CL/P) and 90 of their unaffected relatives. Design Retrospective study of dermatoglyphic pattern types. Setting Negros Occidental and Cavite in the Philippines. Participants Nonsyndromic subjects with CL/P and their unaffected relatives. Methods Dermatoglyphic patterns were categorized as arch, ulnar loop, radial loop, whorl, or other by three independent raters. Pattern data from the subjects, the unaffected relatives, and an unaffected control population (from the literature) were compared using chi-square tests. As a measure of asymmetry, dissimilarity between pattern types on homologous fingers was quantified and compared using Student's t tests. Results The frequency of arches (p = .016) and ulnar loops (p = .04) were significantly increased, and whorls decreased in the affected group (p = .0015), compared with the unaffected group. Affected female subjects had significantly more ulnar loops and arches (p = .009 and p = .023, respectively) and fewer whorls (p < .0001) than the unaffected female subjects. There were no significant differences between affected and unaffected male subjects. Dissimilarity scores were significantly different between male and female subjects and between subjects with CL/P and unaffected relatives. Additionally, pattern type frequencies for the relatives fell in between the frequencies for the CL/P group and the controls. Conclusions In this Filipino population, differences in frequency of dermatoglyphic pattern types and pattern dissimilarity exist between individuals with orofacial clefts and their unaffected relatives and between both groups and controls, with the major effect seen in female subjects.

scholarly journals Modelling tree shape and structure in viral phylodynamics

2013 ◽  
Vol 368 (1614) ◽  
pp. 20120208 ◽  
Author(s):  
Simon D. W. Frost ◽  
Erik M. Volz
Keyword(s):  
Population Structure ◽  
Common Ancestor ◽  
Population Level ◽  
Structured Populations ◽  
Evolutionary System ◽  
Epidemiological Models ◽  
Evolutionary Time ◽  
Contact Rates ◽  
Measure Of Asymmetry ◽  
Hiv 1

Epidemiological models have highlighted the importance of population structure in the transmission dynamics of infectious diseases. Using HIV-1 as an example of a model evolutionary system, we consider how population structure affects the shape and the structure of a viral phylogeny in the absence of strong selection at the population level. For structured populations, the number of lineages as a function of time is insufficient to describe the shape of the phylogeny. We develop deterministic approximations for the dynamics of tips of the phylogeny over evolutionary time, the number of ‘cherries’, tips that share a direct common ancestor, and Sackin's index, a commonly used measure of phylogenetic imbalance or asymmetry. We employ cherries both as a measure of asymmetry of the tree as well as a measure of the association between sequences from different groups. We consider heterogeneity in infectiousness associated with different stages of HIV infection, and in contact rates between groups of individuals. In the absence of selection, we find that population structure may have relatively little impact on the overall asymmetry of a tree, especially when only a small fraction of infected individuals is sampled, but may have marked effects on how sequences from different subpopulations cluster and co-cluster.

On a measure of asymmetry for Reuleaux polygons

2011 ◽  
Vol 102 (1-2) ◽  
pp. 73-79 ◽  
Author(s):  
Qi Guo ◽  
HaiLin Jin
Keyword(s):  
Measure Of Asymmetry ◽  
Reuleaux Polygons

scholarly journals METHOD FOR ASSESSING THE SYMMETRY OF OBJECTS ON DIGITAL BINARY IMAGES BASED ON FOURIER DESCRIPTOR

2019 ◽  
Vol XLII-2/W12 ◽  
pp. 143-148
Author(s):  
L. Mestetskiy ◽  
A. Zhuravskaya
Keyword(s):  
Symmetry Axis ◽  
Fourier Descriptor ◽  
Earth Remote Sensing ◽  
Discrete Object ◽  
Binary Images ◽  
Special Cases ◽  
Exact Symmetry ◽  
Measure Of Asymmetry ◽  
Axis Of Symmetry ◽  
High Computational Complexity

<p><strong>Abstract.</strong> In this paper we solve the problem of finding the symmetry axis of the object in a digital binary image. A new axial symmetry criterion is formulated for a connected discrete object. The problem of determining the symmetry measure and finding the symmetry axes arises in a variety of applications. In discrete images, exact symmetry is possible only in special cases. The disadvantage of the existing methods solving this problem is the high computational complexity. To improve computational efficiency, it is proposed to use the so-called Fourier descriptor. A new method for estimating the asymmetry of a discrete silhouette is proposed. The described algorithm for calculating the measure of asymmetry and determining the axis of symmetry is quadratic by the number of contour points. Methods for reducing the volume of calculations using a convex hull and taking into account the values of the modules of Fourier coefficients are proposed. Computational experiments are conducted with silhouettes of aircraft extracted from earth remote sensing images. The reliability of the described solution is established.</p>

Sign in / Sign up

Export Citation Format

Share Document