Results 1 to 10 of about 3,097,877 (152)
Best-fitting growth curves of the von Bertalanffy-Pütter type [PDF]
Poultry Science, 2019 Introduction: A large body of literature aims at identifying growth models that fit best to given mass-at-age data. The von Bertalanffy-Pütter differential equation is a unifying framework for the study of growth models.
Norbert Brunner +2 more
exaly +3 more sources
On the exponent in the Von Bertalanffy growth model [PDF]
PeerJ, 2018 Von Bertalanffy proposed the differential equation m′(t) = p × m(t)a − q × m(t) for the description of the mass growth of animals as a function m(t) of time t.
Katharina Renner-Martin +4 more
doaj +4 more sources
Accounting for temporal and individual variation in the estimation of Von Bertalanffy growth curves. [PDF]
Ecol Evol, 2022 Growth and growth limitation are important indicators of density dependence and environmental limitation of populations. Estimating individual growth trajectories is therefore an important aspect of understanding and predicting the life history and ...
Croll JC, van Kooten T.
europepmc +2 more sources
A new framework for growth curve fitting based on the von Bertalanffy Growth Function. [PDF]
Sci Rep, 2020 All organisms grow. Numerous growth functions have been applied to a wide taxonomic range of organisms, yet some of these models have poor fits to empirical data and lack of flexibility in capturing variation in growth rate.
Lee L, Atkinson D, Hirst AG, Cornell SJ.
europepmc +2 more sources
Best fitting tumor growth models of the von Bertalanffy-PütterType. [PDF]
BMC Cancer, 2019 Longitudinal studies of tumor volume have used certain named mathematical growth models. The Bertalanffy-Pütter differential equation unifies them: It uses five parameters, amongst them two exponents related to tumor metabolism and morphology.
Kühleitner M +4 more
europepmc +2 more sources
International Journal of General Systems, 2015 Bertalanffy’s so-called “general system theory” (GST) and cybernetics were and are often confused: this calls for clarification. In this article, Bertalanffy’s conceptions and ideas are compared with those developed in cybernetics in order to investigate
M. Drack, David Pouvreau
exaly +2 more sources
Mathematical Modelling of Population Growth: The Case of Logistic and Von Bertalanffy Models
Open Journal of Modelling and Simulation, 2014 In this paper, some theoretical mathematical aspects of the known predator-prey problem are considered by relaxing the assumptions that interaction of a predation leads to little or no effect on growth of the prey population and the prey growth rate ...
Purnachandra Rao Koya
exaly +2 more sources
Fisheries Research, 2011 Three candidate, non-nested, growth models (von Bertalanffy, Gompertz and inverse logistic) were fitted to multiple samples of tag-recapture data (n = 27 samples) to determine the best statistical model for blacklip abalone (Haliotis rubra) populations
Geoff Tuck, Malcolm Haddon
exaly +2 more sources
Nonlinear mixed models for characterization of growth trajectory of New Zealand rabbits raised in tropical climate [PDF]
Animal Bioscience, 2022 Objective The identification of nonlinear mixed models that describe the growth trajectory of New Zealand rabbits was performed based on weight records and carcass measures obtained using ultrasonography.
Vanusa Castro de Sousa +7 more
doaj +1 more source
Conditional Ulam stability and its application to von Bertalanffy growth model.
Mathematical biosciences and engineering : MBE, 2022 The purpose of this paper is to apply conditional Ulam stability, developed by Popa, Rașa, and Viorel in 2018, to the von Bertalanffy growth model $ \frac{dw}{dt} = aw^{\frac{2}{3}}-bw $, where $ w $ denotes mass and $ a > 0 $ and $ b > 0 $ are the ...
M. Onitsuka
semanticscholar +1 more source