Results 51 to 60 of about 4,556,667 (235)
Symmetries and solutions of the non-autonomous von Bertalanffy equation
Communications in Nonlinear Science and Numerical Simulation, 2015 Consider the generalized Bertalanffy equation \[ {dN\over dt}= \alpha(t)N^\beta -a(t)N^b+ \psi(t),\tag{\(*\)} \] where \(N\) describes the size of a population. The authors use Lie symmetry methods to determine constraints on the functions \(\alpha(t)\), \(a(t)\) and \(\psi(t)\) which allow nontrivial symmetries to exist for \((*)\).
Edwards, Maureen P, Anderssen, R
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Spatial Dynamics of Tourism Sustainability in EU Member States
Sustainable Development, EarlyView.ABSTRACT This study introduces a synthetic indicator of tourism sustainability for the EU, bridging the gap between institutional monitoring and academic research. By applying the PROMETHEE II method to rank the 27 Member States in 2019 and 2023, the research transforms static data into a dynamic roadmap of post‐pandemic recovery. The findings reveal a
M. Rosario González‐Rodríguez +1 more
wiley +1 more source
Data sources of von Bertalanffy growth parameter of several Donax species
, 2009 Data sources of von Bertalanffy growth parameter of several Donax ...
Marko Herrmann (6980144) +1 more
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Strategy as a theory of change
Strategic Management Journal, EarlyView.Abstract Research Summary The theory‐based view argues that a strategist's task is to develop a theory to move the organization to an improved future state. Focusing on theorizing as a thought process of model creation, we propose a framework to specify hypothetical causal links and analyze their structure as a directed graph connecting inputs ...
Sergio G. Lazzarini +2 more
wiley +1 more source
Analysis Von Bertalanffy Equation With Variation Coefficient [PDF]
, 2017 Growth is the increase of size, both its length and weight at a specific time period. In studying the behavior of the growth of fish used a growth model that is Von Bertalanffy models.
Pagalay, Usman +2 more
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Values of the marginal triangle distribution parameters for the von Bertalanffy growth parameters.
, 2016 Values of the marginal triangle distribution parameters for the von Bertalanffy growth parameters.
Finlay Scott (2741686) +3 more
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Systems Research and Behavioral Science, EarlyView.ABSTRACT Which methodological position is best for orientating higher education? This question is crucial for the design of pedagogical programmes. The issue is not always raised; hence, many offers in higher education are unsatisfactory: ill‐defined, concept‐less, inefficient.
Markus Schwaninger
wiley +1 more source
Marine Science and Technology Bulletin, 2020 To estimate the growth parameters, the non-seasonal von Bertalanffy and Hoenig seasonal von Bertalanffy models were fitted to the length frequency data of Holothuria atra and H. arenicola obtained from coastal areas of Karachi in the northern Arabian Sea,
Quratulan Ahmed +2 more
doaj +1 more source
Ludwig von Bertalanffy's organismic view on the theory of evolution
Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, 2015 ABSTRACT Ludwig 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.
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Parameters for von Bertalanffy mass-at-age model and carbon export potential.
, 2013 Parameters for von Bertalanffy mass-at-age model and carbon export potential.
Andrew J. Pershing (362252) +4 more
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