logistic growth curve

logistic growth curve

a pattern of growth characteristic of many social situations (see DEMOGRAPHIC TRANSITION, DIFFUSION OF INNOVATIONS) in which growth begins slowly then increases rapidly, and finally stabilizes.
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For the KNC population, parameters of growth curves were estimated using Gompertz, von Bertalanffy, and logistic growth curve functions in the SAS NLIN procedure [15].
The descriptive statistics of the growth curve parameter values (i.e., the asymptotic live body weight a [grams], the scaling parameter f [wk], and the intrinsic growth rate y [wk]) estimated from the logistic growth curve function are summarized in Table 3.
In order to fit a best logistic growth curve and predict the future of natural gas production, the best possible calculation of ultimate reserves is essential.
According to the results of goodness of fit in Gompertz and Logistic growth curve models the coefficient of determination (R2) and adjusted coefficient of determination (adj.R2) were detected above 0.996 in boot models for two genotype broilers.
The method will be illustrated by some simulation scenarios according to the logistic growth curve model and the CovRatio measure used to evaluate the impact of an influential observation in determining the covariance matrix of estimated parameters.
They modeled contraceptive prevalence with a logistic growth curve and unmet need for family planning as a function of contraceptive prevalence.
The expected mean size following growth for each initial size class j is defined using an inverse logistic growth curve that has been found to describe blacklip abalone growth well (Haddon et al.
Among specific topics of the 58 chapters are substitution and income effects, monopolistic competition, the logistic growth curve, pareto efficiency, the trade theory diagram, non-neutrality of money, and the Lorentz curve.
Examples of such curves include the asymptotic regression and logistic growth curve described previously.
One of the commonly used models is known as the Logistic Growth Curve with three parameters (Freund and Littell, 1991).
(e) [alpha] measures the extent of deviation of S-shaped dynamics from the classic logistic growth curve.
The first is the logistic growth curve model, the equation is [W.sub.t] = A/(1 + [Be.sup.-kt]).
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