Results 81 to 90 of about 18,958 (230)

Land Use Influences on Freshwater Biodiversity

Global Ecology and Biogeography, Volume 35, Issue 4, April 2026.
ABSTRACT Aim Land‐use change is a major driver of biodiversity loss, but most generalisations about its effects come from terrestrial ecosystems. Given the fundamental differences in spatial structure and community assembly processes between terrestrial and freshwater ecosystems, biodiversity responses to land‐use change may diverge.
Minghua Shen, Roel van Klink, Wubing Xu, Alban Sagouis, Jonathan M. Chase   +4 more
wiley   +1 more source

Bayesian and non-Bayesian inference for the compound Poisson log-normal model with application in finance

Alexandria Engineering Journal
In this article, we described a novel class of distributions that can be analyzed in complex and skewed real data sets. We called the proposed distribution as compound Poisson log-normal model, and it obtained by compounding the truncated Poisson and log-
Muqrin A. Almuqrin
doaj   +1 more source

FIML estimation of an endogenous switching model for count data [PDF]

We develop FIML code for estimating a Poisson Count data model with lognormal unobserved heterogeneity and an endogenous dummy variable as proposed by Terza (1998).
Alfonso Miranda Caso Luengo
core  

Bayesian weak lensing tomography: Reconstructing the 3D large-scale distribution of matter with a lognormal prior

, 2017
We present a Bayesian reconstruction algorithm that infers the three-dimensional large-scale matter distribution from the weak gravitational lensing effects measured in the image shapes of galaxies.
Böhm, Vanessa, Enßlin, Torsten A., Greiner, Maksim, Hilbert, Stefan   +3 more
core   +1 more source

geoCount: An R Package for the Analysis of Geostatistical Count Data

Journal of Statistical Software, 2015
We describe the R package geoCount for the analysis of geostatistical count data. The package performs Bayesian analysis for the Poisson-lognormal and binomial-logitnormal spatial models, which are subclasses of the class of generalized linear spatial ...
Liang Jing, Victor De Oliveira
doaj   +1 more source

ztpln: Zero-Truncated Poisson Lognormal Distribution [PDF]

, 2020
Masatoshi Katabuchi
openalex   +1 more source

Lognormal variability in BL Lacertae

, 2009
X-ray data from the blazar BL Lac are used to investigate the nature of its variability, and more precisely the flux dependency of the variability and the distribution of fluxes.
Albert, B. Degrange, B. Giebels, Bicknell, Gaskell, Jahoda, Lyubaskii, Maraschi, Marscher, Sikora, Stern, Uttley, Uttley, Vaughan   +13 more
core   +1 more source

Traffic Distribution of IM Services

ITM Web of Conferences, 2016
With the proposition of new opinion that the distribution of many human activities follows heavy-tailed distribution rather than Poisson distribution, the research on human behaviors has received widely attention.
Li Rui-Bing, Sun Fang-Fang
doaj   +1 more source

On homogeneous skewness of unimodal distributions [PDF]

, 2009
We introduce a new concept of skewness for unimodal continuous distributions which is built on the asymmetry of the density function around its mode. The asymmetry is captured through a skewness function.
Das, Shubhabrata, Ghosh, Diptesh, Mandal, Pranab K.   +2 more
core   +2 more sources

Catch-per-unit-effort: which estimator is best?

Brazilian Journal of Biology
In this paper we examine the accuracy and precision of three indices of catch-per-unit-effort (CPUE). We carried out simulations, generating catch data according to six probability distributions (normal, Poisson, lognormal, gamma, delta and negative ...
M. Petrere Jr., HC. Giacomini, P. De Marco Jr.   +2 more
doaj   +1 more source