Results 1 to 10 of about 3,018,075 (221)
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.
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Best-fitting growth curves of the von Bertalanffy-Pütter type. [PDF]
Poult Sci, 2019 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.The most common growth models used in poultry science literature fit into this framework, as these models correspond to different exponent-pairs (e ...
Kühleitner M +4 more
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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
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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. Each exponent-pair defines a unique three-parameter model of the Bertalanffy-Pütter type, and the above ...
Kühleitner M +4 more
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Extended von Bertalanffy Equation in Solow Growth Modelling [PDF]
AlgorithmsThe aim of this work is to model the growth of an economic system and, in particular, the evolution of capital accumulation over time, analysing the feasibility of a closed-form solution to the initial value problem that governs the capital-per-capita ...
Antonio E. Bargellini +2 more
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What is the status of metabolic theory one century after Pütter invented the von Bertalanffy growth curve? [PDF]
Biological Reviews of The Cambridge Philosophical Society, 2020 Metabolic theory aims to tackle ecological and evolutionary problems by explicitly including physical principles of energy and mass exchange, thereby increasing generality and deductive power.
Michael Kearney
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Social relations: Building on Ludwig von Bertalanffy [PDF]
Systems Research and Behavioral Science, 2019 AbstractLudwig von Bertalanffy did not leave us a legacy of a social systems theory. Nonetheless, reconstructing his general approach to systems provides us with several ideas on how to build a theory of social systems. The concept of social relations easily connects to Bertalanffy's concept of relations of organization.
W. Hofkirchner
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Ludwig von Bertalanffy's organismic view on the theory of evolution
Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, 2015 ABSTRACTLudwig von Bertalanffy was a key figure in the advancement of theoretical biology. His early considerations already led him to recognize the necessity of considering the organism as a system, as an organization of parts and processes. He termed the resulting research program organismic biology, which he extended to all basic questions of ...
M. Drack
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Ulam type stability for von Bertalanffy growth model with Allee effect
Mathematical Biosciences and EngineeringIn many studies dealing with mathematical models, the subject is examining the fitting between actual data and the solution of the mathematical model by applying statistical processing.
Masumi Kondo, Masakazu Onitsuka
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A general Richards family growth curve fit in European livestock for use in physiologically-based toxicokinetic modelling [PDF]
BMC Veterinary ResearchBackground Physiologically-based toxicokinetic models in livestock need to account for growth during long-term exposure studies due to increase in tissue volume and subsequent dilution of concentration.
David Inauen +3 more
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