Results 11 to 20 of about 3,056,753 (292)
On the exponent in the von Bertalanffy growth model
PeerJ, 2017 Bertalanffy proposed the differential equation m´ ( t ) = p × m ( t ) a –
Katharina Renner-Martin +4 more
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Die Allgemeine Systemtheorie bei Ludwig von Bertalanffy [PDF]
, 2015 Die Wissenschaftsauffassung von Bertalanffy erwächst aus der Kontroverse zwischen mechanistischen und vitalistischen Positionen in der Biologie. Der reduktionistischen Position steht ein metaphysischer Ganzheitsansatz gegenüber. Bertalanffy, sowohl fasziniert von den Verfahren objektiver Wissenschaft als auch überzeugt von der Notwendigkeit eines ...
Thomas Diesner
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O Modelo de crescimento de peixes de Von Bertalanffy
Jornal Eletrônico de Ensino e Pesquisa de Matemática, 2017 Neste trabalho apresentamos a equação diferencial de Von Bertalanffy que modela o crescimento de peixes. Embora seja uma equação diferencial simples e com solução explícita, a dedução do modelo envolve algumas dificuldades.
Ermerson Arnaut de Toledo
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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
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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
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SOME NEW RESULTS OF A FRACTIONAL VON BERTALANFFY MODEL
E-Jurnal Matematika, 2023 In this article, we review the deterministic and perturbed Von Bertalanffy model that has been developing to discuss the existence and uniqueness results of the model.
AVAN AL-SAFFAR
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Nonlinear equations to determine the growth curve of immunocastrated pigs [PDF]
Pesquisa Agropecuária Brasileira, 2020 : The objective of this work was to compare the performance of the nonlinear Gompertz, logistic, and von Bertalanffy equations, to describe the growth curve of immunocastrated male pigs from birth until reaching 140 kg body weight. Standard error, number
Marcos Speroni Ceron +7 more
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The geometry of reaction norms yields insights on classical fitness functions for Great Lakes salmon. [PDF]
, 2020 Life history theory examines how characteristics of organisms, such as age and size at maturity, may vary through natural selection as evolutionary responses that optimize fitness.
Breck, James E +5 more
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Biotecnología en el Sector Agropecuario y Agroindustrial, 2022 Tradicionalmente se ha utilizado el modelo de von Bertalanffy como patrón único en el estudio del crecimiento de los peces, considerándolo a priori como el único modelo que se ajusta a los datos de longitu-edad de las especies; una consideración que ...
Angel Rafael González
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Czech Journal of Animal Science, 2022 The aim of this study was to determine the best non-linear function describing the growth of the Linda goose breed. To achieve this aim, five non-linear functions, such as exponential, logistic, von Bertalanffy, Brody and Gompertz, were employed to ...
Cem Tirink +3 more
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