Results 31 to 40 of about 19,520,789 (348)

Air Pollution Dispersion over Durban, South Africa

open access: yesAtmosphere, 2022
Air pollution dispersion over Durban is studied using satellite, reanalysis and in situ measurements. This coastal city of 4 million people located on the east coast of South Africa contributes 29 million T/yr of trace gases, mostly from transport and ...
Mark R. Jury, Mandisa S. Buthelezi
doaj   +1 more source

A Relationship between Nuclear Black Hole Mass and Galaxy Velocity Dispersion [PDF]

open access: yes, 2000
We describe a correlation between the mass Mbh of a galaxy's central black hole and the luminosity-weighted line-of-sight velocity dispersion σe within the half-light radius.
K. Gebhardt   +14 more
semanticscholar   +1 more source

Turbulent dispersion in cloud-topped boundary layers [PDF]

open access: yes, 2009
Compared to dry boundary layers, dispersion in cloud-topped boundary layers has received less attention. In this LES based numerical study we investigate the dispersion of a passive tracer in the form of Lagrangian particles for four kinds of atmospheric
Vilà-Guerau de Arellano, J. (author)   +11 more
core   +1 more source

Prediction of Ross River virus incidence in Queensland, Australia: building and comparing models [PDF]

open access: yesPeerJ, 2022
Transmission of Ross River virus (RRV) is influenced by climatic, environmental, and socio-economic factors. Accurate and robust predictions based on these factors are necessary for disease prevention and control.
Wei Qian   +4 more
doaj   +2 more sources

Log-Normal or Over-Dispersed Poisson? [PDF]

open access: yesRisks, 2018
Although both over-dispersed Poisson and log-normal chain-ladder models are popular in claim reserving, it is not obvious when to choose which model. Yet, the two models are obviously different. While the over-dispersed Poisson model imposes the variance to mean ratio to be common across the array, the log-normal model assumes the same for the standard
openaire   +3 more sources

Basic Features of the Analysis of Germination Data with Generalized Linear Mixed Models

open access: yesData, 2020
Germination data are discrete and binomial. Although analysis of variance (ANOVA) has long been used for the statistical analysis of these data, generalized linear mixed models (GzLMMs) provide a more consistent theoretical framework. GzLMMs are suitable
Alberto Gianinetti
doaj   +1 more source

A new over-dispersed count model

open access: yes, 2023
A new two-parameter discrete distribution, namely the PoiG distribution is derived by the convolution of a Poisson variate and an independently distributed geometric random variable. This distribution generalizes both the Poisson and geometric distributions and can be used for modelling over-dispersed as well as equi-dispersed count data.
Nandi, Anupama   +2 more
openaire   +2 more sources

Achromatic Metalens over 60 nm Bandwidth in the Visible and Metalens with Reverse Chromatic Dispersion. [PDF]

open access: yesNano letters (Print), 2017
In this Letter, we experimentally report an achromatic metalens (AML) operating over a continuous bandwidth in the visible. This is accomplished via dispersion engineering of dielectric phase shifters: titanium dioxide nanopillars tiled on a dielectric ...
M. Khorasaninejad   +6 more
semanticscholar   +1 more source

A New Three-Parameter Discrete Distribution With Associated INAR(1) Process and Applications

open access: yesIEEE Access, 2020
The aim of this article is to propose a new three-parameter discrete Lindley distribution. A wide range of its structural properties are investigated.
M. S. Eliwa   +3 more
doaj   +1 more source

Can Generalized Poisson model replace any other count data models? An evaluation

open access: yesClinical Epidemiology and Global Health, 2021
Background: Count data represents the number of occurrences of an event within a fixed period of time. In count data modelling, overdispersion is inevitable.
Bijesh Yadav   +6 more
doaj   +1 more source

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