The Gompertz Curve as a Growth Curve

A Markovian growth dynamics on rooted binary trees evolving according to the Gompertz curve

Telomere are nucleo-proteins located at the end terminal of eukaryotic chromosomes which shorten at each cell division. Recent evidences points to telomere as a cell clock mechanism which limits the total number of cell divisions (Hayflick limit) and decelerates cellular proliferation. In a recent work, simulations of a discrete time stochastic telomere regulated model for cell division produce...

Estimation of Gompertz growth curve parameters by a non- linear mixed effects model

Abstract Simulated growth data with parameters appropriate for pigs were generated through a 2 step process. First, a linear mixed model was used to produce Gompertz growth curve coefficients for each pig. Then, 30 weekly weights were produced using the coefficients. Simulated pedigree had 3 generations without selection: 10 unrelated grandsires and 200 sires, each with 24 tested offspring. A m...

Growth curve by Gompertz nonlinear regression model in female and males in tambaqui (Colossoma macropomum).

Was evaluated the pattern of growth among females and males of tambaqui by Gompertz nonlinear regression model. Five traits of economic importance were measured on 145 animals during the three years, totaling 981 morphometric data analyzed. Different curves were adjusted between males and females for body weight, height and head length and only one curve was adjusted to the width and body lengt...

Latent Growth Curve Modeling

A fundamental observation in the social and behavioral sciences is that people change over time, but not necessarily in the same way or at the same rate. For example, verbal ability increases steadily throughout the elementary school years, but it does not increase at the same rate for all students. There are individual differences in the rate and direction of change in many contexts, and these...

Latent Growth Curve Models