Dispersion Measures and Multidistances on $$\mathbb {R}^k$$ R k

Author(s):  
Javier Martín ◽  
Gaspar Mayor
Keyword(s):  
Author(s):  
Kathryn Rudie Harrigan ◽  
Maria Chiara DiGuardo ◽  
Brian Nicholas Velez
Keyword(s):  

2020 ◽  
Vol 4 (Supplement_1) ◽  
pp. 68-68
Author(s):  
Mukesh Parmar

Abstract The studies relating to measurement of compression of Mortality in India is scarce. Most of the studies relating to mortality in India are focused on either life expectancy, or adult, and child mortality. We have used methods suggested by Kannisto (2000) and Canudos (2008) to measure the compression of mortality phenomenon for India for four decades viz. 1970-2015. Dispersion measures like simple mean, median, modal age at death; and some complicated measures like life disparity, standard deviation above mode, standard deviation in highest quartile, Interquartile range, Gini coefficient, AID and C-family were calculated for India from 1970-2015. We used the age specific death rates from abridged Life tables given by Sample Registration System published by Govt. of India. Our results show that inequality in mortality is decreasing in general but the gap between male and female is increasing. There was an average of three years difference in mean and modal age at death between male females in 2011-15. Overall, mean, median and modal age at death has increased in four decades but other inequality measures like Gini coefficient, AID, Standard deviation (SD) and coefficient of variation has decreased in four decades in India. C50 indicator, which indicates that 50 percent of deaths are happening in that age interval, declined from 26 years to 20 years for males and 27 years to 17 years for females, thus indicating the rate of compression of mortality is higher for females than males in India during 1970-75 till 2011-15.


2021 ◽  
Vol 126 (3) ◽  
pp. 1983-2011
Author(s):  
Deise Deolindo Silva ◽  
Maria Cláudia Cabrini Grácio
Keyword(s):  
H Index ◽  

2016 ◽  
Vol 817 (1) ◽  
pp. 16 ◽  
Author(s):  
J. M. Cordes ◽  
R. M. Shannon ◽  
D. R. Stinebring

2017 ◽  
Vol 841 (2) ◽  
pp. 125 ◽  
Author(s):  
M. L. Jones ◽  
M. A. McLaughlin ◽  
M. T. Lam ◽  
J. M. Cordes ◽  
L. Levin ◽  
...  

2020 ◽  
Vol 890 (2) ◽  
pp. L32 ◽  
Author(s):  
C. Casentini ◽  
F. Verrecchia ◽  
M. Tavani ◽  
A. Ursi ◽  
L. A. Antonelli ◽  
...  

2021 ◽  
Vol 922 (2) ◽  
pp. L31
Author(s):  
Siyao Xu ◽  
David H. Weinberg ◽  
Bing Zhang

Abstract Extragalactic fast radio bursts (FRBs) have large dispersion measures (DMs) and are unique probes of intergalactic electron density fluctuations. By using the recently released First CHIME/FRB Catalog, we reexamined the structure function (SF) of DM fluctuations. It shows a large DM fluctuation similar to that previously reported in Xu & Zhang, but no clear correlation hinting toward large-scale turbulence is reproduced with this larger sample. To suppress the distortion effect from FRB distances and their host DMs, we focus on a subset of CHIME catalog with DM < 500 pc cm−3. A trend of nonconstant SF and nonzero correlation function (CF) at angular separations θ less than 10° is seen, but with large statistical uncertainties. The difference found between SF and that derived from CF at θ ≲ 10° can be ascribed to the large statistical uncertainties or the density inhomogeneities on scales on the order of 100 Mpc. The possible correlation of electron density fluctuations and inhomogeneities of density distribution should be tested when several thousands of FRBs are available.


Author(s):  
Stefan Th. Gries

Abstract This paper discusses the degree to which some of the most widely-used measures of association in corpus linguistics are not particularly valid in the sense of actually measuring association rather than some amalgam of a lot of frequency and a little association. The paper demonstrates these issues on the basis of hypothetical and actual corpus data and outlines implications of the findings. I then outline how to design an association measure that only measures association and show that its behavior supports the use of the log odds ratio as a true association-only measure but separately from frequency; in addition, this paper sets the stage for an analogous review of dispersion measures in corpus linguistics.


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