logistic curve

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lo·gis·tic curve

an S-shaped curve that depicts the growth of a population in an area of fixed limits.

logistic curve

an S-shaped curve of numbers against time that represents the growth in numbers of a population of organisms in a limited environment. see GROWTH CURVE.

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growth curve

References in periodicals archive ?

However, the logistic curves showed the best performance both in the convergence properties and the convergence weight (Table2).

Estimation of heritability and genetic correlation of body weight gain and growth curve parameters in Korean native chicken

As the vehicle speed decreases from high to low, [d.sup.sig.sub.n] also decreases, resulting in the CB-SB zones and logistic curves moving toward the intersection.

A Modified Cellular Automaton Model for Accounting for Traffic Behaviors during Signal Change Intervals

Values of the parameters of the selectivity logistic curves, selectivity size, and selectivity interval for male and female crabs.

Selectivity curves of the capture of mangrove crab (Ucides cordatus) on the northern coast of Brazil using bayesian inference/Curvas de seletividade da captura do caranguejo-uca (Ucides cordatus) na costa norte do Brasil usando a inferencia bayesiana

Phillips (2007) showed (following Modis (2002)) that logistic curves have no tipping points, but that the Bass model can be interpreted in a way that manifests a tipping point early in the life of the growth curve, though this tipping point is far from the inflection point.

Inflection points and industry change: Was Andy Grove right after all?

The standard model still could be applicable because the increase in skipped spawning occurred at younger ages (4-15), the logistic curves reached 100% around age 12 (close to age 15), and fish commonly reach ages >50.

Age at maturity, skipped spawning, and fecundity of female sablefish (Anoplopoma fimbria) during the spawning season

(3) The cumulative probability distribution of failure of the electrical components in distribution networks summarized in [14] is consistent with logistic curves. The generalized logistic distribution function was assumed as the logarithmic time to the failure of the electrical insulation equipment [15].

Calculation of a Health Index of Oil-Paper Transformers Insulation with Binary Logistic Regression

For this purpose we employ the Bi-Logistic curve which is the sum of two Logistic curves 14].

Combining diffusion models and macroeconomic indicators with a modified genetic programming method: implementation in forecasting the number of mobile telecommunications subscribers in OECD countries

Results of the LSDM performance with observed scores on individual attributes shows that the APCs recovered with LSDM match well the ICCs of individual items for operations A1 and A2 but for A3 A4 and A5 the APCs tends to be over the ICCs on all the ability levels; these results may be explained by the conjunctive nature of the model, moreover, the product of logistic curves is not logistic, for this reason this work presents a descriptive and exploratory explanation, more than a statistical comparison between curves.

Validacion de la estructura cognitiva de una prueba aritmetica con el Modelo de Distancia Minima de Cuadrados (LSDM)

Sigmoid (S) shaped or logistic curves predict the carrying capacity which is the population that is sustainable in an environment.

Modeling exponential population growth

Furthermore, the logistic curves all show a relatively flat peak, with a pronounced "hang time" near the peak.

Peak oil

The field data for BegShed, MaxShed, EndShed, and Silking of each treatment population were fit to standard logistic curves of the form:

Quantitative relationships between pollen shed density and grain yield in maize. (Seed Physiology, Production & Technology)

The Gompertz and logistic curves are the two most widely used specifications of S-curves.