Articles with "log normal" as a keyword



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A matching prior based on the modified profile likelihood for the common mean in multiple log-normal distributions

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Published in 2020 at "Statistical Papers"

DOI: 10.1007/s00362-017-0950-4

Abstract: In this paper, we develop a matching prior for the common mean in several log-normal distributions. For this problem, assigning priors appropriately for the common log-normal mean is challenging owing to the presence of nuisance… read more here.

Keywords: log normal; common mean; normal distributions; prior based ... See more keywords
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A Robust Wald-Type Test for Testing the Equality of Two Means from Log-Normal Samples

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Published in 2018 at "Methodology and Computing in Applied Probability"

DOI: 10.1007/s11009-018-9639-y

Abstract: The log-normal distribution is one of the most common distributions used for modeling skewed and positive data. It frequently arises in many disciplines of science, specially in the biological and medical sciences. The statistical analysis… read more here.

Keywords: test testing; log normal; type test; robust wald ... See more keywords
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Poly-dispersed modeling of bubbly flow using the log-normal size distribution

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Published in 2019 at "Chemical Engineering Science"

DOI: 10.1016/j.ces.2019.02.013

Abstract: Abstract The bubble size distribution plays an important role in interfacial mass, momentum and energy transfer between bubbles and their carrier liquid in bubbly flow. Accurate modeling of the size distribution is therefore key. A… read more here.

Keywords: bubbly flow; size distribution; poly; log normal ... See more keywords
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The Log-Normal zero-inflated cure regression model for labor time in an African obstetric population

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Published in 2021 at "Journal of Applied Statistics"

DOI: 10.1080/02664763.2021.1896684

Abstract: In obstetrics and gynecology, knowledge about how women's features are associated with childbirth is important. This leads to establishing guidelines and can help managers to describe the dynamics ... read more here.

Keywords: inflated cure; normal zero; log normal; regression model ... See more keywords
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Estimators of compound Gaussian clutter with log-normal texture

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Published in 2019 at "Remote Sensing Letters"

DOI: 10.1080/2150704x.2019.1601275

Abstract: ABSTRACT Estimators of clutter models parameters based upon higher order moments estimator (HOME) produce usually poor results in particular for low sample sizes. In an attempt to remedy this situation, closed forms of [zlog(z)] and… read more here.

Keywords: compound gaussian; normal texture; clutter log; log normal ... See more keywords
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Ray-tracing log-normal simulation for weak gravitational lensing: application to the cross-correlation with galaxies

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Published in 2020 at "Journal of Cosmology and Astroparticle Physics"

DOI: 10.1088/1475-7516/2021/03/095

Abstract: We present an algorithm to self-consistently generate mock weak gravitational lensing convergence fields and galaxy distributions in redshift space. We generate three-dimensional cosmic density fields that follow a log-normal distribution, and ray-trace them to produce… read more here.

Keywords: ray tracing; log normal; cross; cross correlation ... See more keywords
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Multi log-normal density structure in cygnus-X molecular clouds: A fitting for N-PDF without power-law

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Published in 2023 at "Monthly Notices of the Royal Astronomical Society"

DOI: 10.1093/mnras/stad1451

Abstract: We studied the H2 column density probability distribution function (N-PDF) based on molecular emission lines using the Nobeyama 45-m Cygnus X CO survey data. Using the DENDROGRAM and SCIMES algorithms, we identified 124 molecular clouds… read more here.

Keywords: pdf; density; structure; log normal ... See more keywords
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Power-law and log-normal avalanche size statistics in random growth processes.

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Published in 2021 at "Physical review. E"

DOI: 10.1103/physreve.104.l052101

Abstract: We study the avalanche statistics observed in a minimal random growth model. The growth is governed by a reproduction rate obeying a probability distribution with finite mean a[over ¯] and variance v_{a}. These two control… read more here.

Keywords: growth; avalanche; random growth; avalanche size ... See more keywords
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Outage probability analysis for hybrid TSR-PSR based SWIPT systems over log-normal fading channels

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Published in 2021 at "International Journal of Electrical and Computer Engineering"

DOI: 10.11591/ijece.v11i5.pp4233-4240

Abstract: Employing simultaneous information and power transfer (SWIPT) technology in cooperative relaying networks has drawn considerable attention from the research community. We can find several studies that focus on Rayleigh and Nakagami-m fading channels, which are… read more here.

Keywords: fading channels; log normal; tsr psr; psr ... See more keywords
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Difficulties in summing log-normal distributions for abundance and potential solutions

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Published in 2023 at "PLOS ONE"

DOI: 10.1371/journal.pone.0280351

Abstract: The log-normal distribution, often used to model animal abundance and its uncertainty, is central to ecological modeling and conservation but its statistical properties are less intuitive than those of the normal distribution. The right skew… read more here.

Keywords: log normal; normal distributions; normal distribution; abundance ... See more keywords
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Quasi-Static Variation of Power-Law and Log-Normal Distributions of Urban Population

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Published in 2021 at "Entropy"

DOI: 10.3390/e23070908

Abstract: We analytically derived and confirmed by empirical data the following three relations from the quasi-time-reversal symmetry, Gibrat’s law, and the non-Gibrat’s property observed in the urban population data of France. The first is the relation… read more here.

Keywords: quasi time; variation; law; log normal ... See more keywords