Results 41 to 50 of about 20,058 (156)

A new subgrid-scale representation of hydrometeor fields using a multivariate PDF [PDF]

open access: yesGeoscientific Model Development, 2016
The subgrid-scale representation of hydrometeor fields is important for calculating microphysical process rates. In order to represent subgrid-scale variability, the Cloud Layers Unified By Binormals (CLUBB) parameterization uses a multivariate ...
B. M. Griffin, V. E. Larson
doaj   +1 more source

On the Discrimination between the Inverse Gaussian and Lognormal Distributions [PDF]

open access: yesالمجلة العراقية للعلوم الاحصائية, 2008
Both inverse Gaussian and lognormal distributions have been used among many well-known failure time distributions with positively skewed data. The problem of selecting between them is considered. The logarithm of maximum likelihood ratio has been used as
Zakaria Y. AL-Jammal
doaj   +1 more source

Fitting the Modified-Power-Lognormal to the Sum of Independent Lognormals Distribution [PDF]

open access: yesGLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference, 2009
We propose a new method for calculating a tight approximation to the distribution of the sum of independent lognormal random variables. We make use of a three-parameter modified-power-lognormal distribution function as the approximating distribution.
Sebastian S. Szyszkowicz   +1 more
openaire   +1 more source

Quantitative laboratory results: normal or lognormal distribution?

open access: yesJournal of Laboratory Medicine, 2020
The identification of a suitable distribution model is a prerequisite for the parametric estimation of reference intervals and other statistical laboratory tasks. Classification of normal vs.
Klawonn Frank   +2 more
doaj   +1 more source

Weibull or Lognormal Distribution to Characterize Fatigue Life Scatter – Which is More Suitable? – Continued

open access: yesFatigue of Aircraft Structures
This paper describes a study to determine whether fatigue test life scatter is best characterised by a Weibull or lognormal statistical distribution for a high strength steel used for landing gear structures. It is a response to “Face 2” of the ICAF 2017
Plaskitt Rob   +2 more
doaj   +1 more source

On the three-spliced Exponential-Lognormal-Pareto distribution

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2022
To model statistical data coming from two di erent distributions, Cooray and Ananda [1] introduced a composite (two-spliced) Lognormal-Pareto model, that was further extended by Scollnik [9] and fitted to insurance data.
Bâcă Adrian, Vernic Raluca
doaj   +1 more source

Modelando la distribución del número de co-autores por artículo Modeling the distribution of co-authorships by paper

open access: yesInvestigación Bibliotecológica: Archivonomía, Bibliotecología e Información, 2011
Este artículo explora la modelación del número de autores que colaboran en la publicación de un artículo. Con ese fin se analizaron la distribución geométrica, la distribución Poisson truncada, la distribución Poisson lognormal y la distribución Gauss ...
Rubén Urbizagástegui Alvarado   +1 more
doaj  

The Lognormal Distribution Is Characterized by Its Integer Moments

open access: yesMathematics
The lognormal moment sequence is considered. Using the fractional moments technique, it is first proved that the lognormal has the largest differential entropy among the infinite positively supported probability densities with the same lognormal-moments.
Pier Luigi Novi Inverardi, Aldo Tagliani
doaj   +1 more source

Preconfigured, Skewed Distribution of Firing Rates in the Hippocampus and Entorhinal Cortex

open access: yesCell Reports, 2013
Despite the importance of the discharge frequency in neuronal communication, little is known about the firing-rate patterns of cortical populations. Using large-scale recordings from multiple layers of the entorhinal-hippocampal loop, we found that the ...
Kenji Mizuseki, György Buzsáki
doaj   +1 more source

Lognormal and Pareto distributions in the Internet [PDF]

open access: yesComputer Communications, 2005
Numerous studies have reported long-tailed distributions for various network metrics, including file sizes, transfer times, and burst lengths. We review techniques for identifying long-tailed distributions based on a sample, propose a new technique, and apply these methods to datasets used in previous reports.
openaire   +1 more source

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