Results 131 to 140 of about 4,474,743 (294)

Simulation Study of the Decision Logic for 95% Upper Confidence Limit Calculations Applied in ProUCL 5.2. [PDF]

Risk Anal
ABSTRACT Risk assessors typically estimate long‐term exposure by calculating a 95th percentile upper confidence level (95UCL) on the mean concentration across an exposure area. There are several methods for calculating a 95UCL. The United States Environmental Protection Agency has developed software (ProUCL) that calculates and recommends a 95UCL ...
Stuchal LD, Hutton S, Remmer C, Goodkind N, Goodrum P.   +4 more
europepmc   +2 more sources

Fishing Activity Affected Odontocete Cetacean Distribution in a Marine Protected Area in the East China Sea

Integrative Zoology, EarlyView.
Spatiotemporal distribution of odontocete cetaceans within China's Jiushan Archipelago National Nature Reserve was investigated. Fishing vessels significantly reduced both cetacean acoustic detections and feeding activity, whereas gillnets selectively suppressed cetacean feeding behavior without affecting overall cetacean detection rates.
Yifan Liu, Zitong Zhou, Peng Ding, Yu Pan, Zhi Yang, Haochi Wang, Fangqiao Wang, Tianshi Wei, Pengxiang Duan, Tomonari Akamatsu, Zhitao Wang   +10 more
wiley   +1 more source

GMM Estimation of Income Distributions from Grouped Data [PDF]

We develop a GMM procedure for estimating income distributions from grouped data with unknown group bounds. The approach enables us to obtain standard errors for the estimated parameters and functions of the parameters, such as inequality and poverty ...
D.S. Prasada Rao, Gholamreza Hajargsht, Joseph Brice, Duangkamon Chotikapanich, William E. Griffiths   +4 more
core  

The gamma distribution as an alternative to the lognormal distribution in environmental applications

, 2000
In environmental applications dealing with data from contaminated sites the positively skewed lognormal distribution has been the most commonly used model.
Iaci, Ross Joseph
core   +1 more source

Animal‐Mediated Dispersal and Clonal Growth Drive Prunus cerasus Invasion in Andean Temperate Forest

Integrative Zoology, EarlyView.
Prunus cerasus reproduces by clonality and by seed dispersal and germination. P. cerasus is invading Patagonian protected areas. The relative relevance of germination and clonal reproduction changes along the time of P. cerasus arrival at a site. Seed dispersal by foxes is primarily responsible for the spread of P. cerasus to new areas.
Matias O. Berrondo, Susana P. Bravo
wiley   +1 more source

fishmax: An R package for Bayesian estimation of maximum body size in animals

Methods in Ecology and Evolution, EarlyView.
Abstract Maximum body size is a key trait of an animal species, determining its population dynamics, productivity and interactions with other species and the environment. For fish in particular, the maximum body length or Lmax$$ {L}_{\mathrm{max}} $$ correlates strongly to other life history parameters and is commonly used in ecological models and ...
Freddie Heather, Stephan Munch, Asta Audzijonyte   +2 more
wiley   +1 more source

Handling mean–variance scaling in intraspecific trait variability and implications for trait–environment analyses

Methods in Ecology and Evolution, EarlyView.
Abstract Trait‐based ecology increasingly relies on measures of intraspecific trait variability to estimate how trait diversity within species varies across species and environmental gradients. Yet variance and related metrics are often interpreted without considering their intrinsic dependence on the mean, as described by the empirical Taylor's power ...
Miguel A. Ortega, Francesco de Bello, José Ramón Obeso, Paola Laiolo   +3 more
wiley   +1 more source

Bayesian estimation of Persistent Income Inequality by Lognormal Stochastic Volatility Model

, 2013
We estimate inequality including Gini coefficients using a lognormal parametric model for an investigation of persistent inequality. The asymptotic theory of selected order statistics enables us to construct a linear model based on grouped data.
Oga, Takashi, Nishino, Haruhisa, Kakamu, Kazuhiko   +2 more
core  

Inferência por redes neurais da distribuição de tamanho de partícula em reações contínuas de polimerização em emulsão [PDF]

, 2014
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Química, Florianópolis, 2014As exigências do mercado mundial em relação à produtividade e qualidade dos produtos poliméricos tornam ...
Ferrari, Jarbas Cleber
core  

A phenotype‐based framework to measure functional redundancy in microbial ecosystems

Methods in Ecology and Evolution, EarlyView.
Abstract Functional redundancy is a key biological concept that offers critical insights into microbial ecosystem stability and responses to environmental perturbations. Existing methods to quantify redundancy typically rely on gene annotations as functional units, limiting their ability to capture complex or partially characterised traits and making ...
Sofia Fraulini, Davide Sanguineti, Guido Zampieri, Laura Treu, Stefano Campanaro   +4 more
wiley   +1 more source