Results 41 to 50 of about 22,337 (217)
, 2010 We consider several one-species population dynamics model with finite and infinite carrying capacity, time dependent growth and effort rates and solve them analytically.
Cabella, Brenno Caetano Trocca +2 more
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Statistical Ensemble Theory of Gompertz Growth Model
Entropy, 2009 An ensemble formulation for the Gompertz growth function within the framework of statistical mechanics is presented, where the two growth parameters are assumed to be statistically distributed.
Takuya Yamano
doaj +1 more source
Another analytic view about quantifying social forces
, 2012 Montroll had considered a Verhulst evolution approach for introducing a notion he called "social force", to describe a jump in some economic output when a new technology or product outcompetes a previous one.
Debouxhtay P. +6 more
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Evaluation of Growth Functions on Japanese Quail Lines
The Journal of Poultry Science, 2013 The aim of present study was to fit the best predictive equation to describe the growth curve of different Japanese quail lines. Moreover the effect of short-term divergent selection on the growth curve parameters was investigated.
Hamid Beiki +3 more
doaj +1 more source
The model muddle: in search of tumour growth laws
, 2013 In this article we shall trace the historical development of tumour growth laws, which in a quantitative fashion describe the increase in tumour mass/volume over time. These models are usually formulated in terms of differential equations that relate the
Gerlee, P.
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ON THE MOMENTS OF THE 3-PARAMETER GOMPERTZ DISTRIBUTION
BarekengGompertz distribution is a classical probability distribution extensively used in actuarial science, reliability, and survival analysis. Gompertz distribution also plays a role in various fields, such as biology, economics, and marketing analysis.
Moch Taufik Hakiki +3 more
doaj +1 more source
The Gompertz-Pareto Income Distribution
, 2010 This work analyzes the Gompertz-Pareto distribution (GPD) of personal income, formed by the combination of the Gompertz curve, representing the overwhelming majority of the economically less favorable part of the population of a country, and the Pareto ...
Abdalla +54 more
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Modelling "calçots" (Allium cepa L.) growth by Gompertz function
SORT- Statistics and Operations Research Transactions, 2013 "Calçots" are the second-year resprouts of the "Ceba Blanca Tardana de Lleida" landrace of onions. The evolution of three "calçots" populations has been modeled to help farmers to plan the optimal time to harvest. Four different models that essentially differ in the type of distribution of the fitting Gompertz function parameters (lag time, maximum ...
Simó, Joan +2 more
+9 more sources
Methane Generation Using an Anaerobic Biodigester From Waste Leachate Water
Asia-Pacific Journal of Chemical Engineering, EarlyView.ABSTRACT Leachate wastewater (LWW) is characterized by slow biodegradation and low biogas production due to resistant materials and limited biological activity. Therefore, applying pretreatments is essential to improving biodegradation potential, which consequently boosts energy recovery.
Khairi R. Kalash +5 more
wiley +1 more source
Evidence for the Gompertz Curve in the Income Distribution of Brazil 1978-2005
, 2008 This work presents an empirical study of the evolution of the personal income distribution in Brazil. Yearly samples available from 1978 to 2005 were studied and evidence was found that the complementary cumulative distribution of personal income for 99%
A. Chatterjee +23 more
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