Exposure evaluations for epidemiological investigations and risk assessments may require estimates of background concentrations and peak exposures, as well as the population mean and variance. The S B ...

Integral projection models (IPMs) have a number of advantages over matrixmodel approaches for analyzing size-structured population dynamics, because the latter require parameter estimates for each age ...

A method for fitting parameters of the gamma distribution to data containing some zero values using maximum likelihood methods is presented. The procedure is based on a conceptual model of the data ...