Search results
Results from the WOW.Com Content Network
The von Bertalanffy growth function (VBGF), or von Bertalanffy curve, is a type of growth curve for a time series and is named after Ludwig von Bertalanffy. It is a special case of the generalised logistic function. The growth curve is used to model mean length from age in animals. [1]
The Bertalanffy equation describes the growth of a biological organism. It was presented by Ludwig von Bertalanffy in 1969. [11] = Here W is organism weight, t is the time, S is the area of organism surface, and V is a physical volume of the organism.
The classical logistic differential equation is a ... Von Bertalanffy function; ... S. Y. (2004). "Features and Partial Derivatives of Bertalanffy–Richards Growth ...
The individual growth model, published by von Bertalanffy in 1934, can be used to model the rate at which fish grow. It exists in a number of versions, but in its simplest form it is expressed as a differential equation of length ( L ) over time ( t ): L ′ ( t ) = r B ( L ∞ − L ( t ) ) {\displaystyle L'(t)=r_{B}\left(L_{\infty }-L(t ...
A more general model formulation was proposed by F. J. Richards in 1959, [5] further expanded by Simon Hopkins, in which the models of Gompertz, Verhulst and also Ludwig von Bertalanffy are covered as special cases of the general formulation.
Von Bertalanffy function-- Von Foerster equation-- Von Kármán swirling flow-- Von Mangoldt function-- Von Mises distribution-- Von Mises–Fisher distribution-- Von Neumann algebra-- Von Neumann–Bernays–Gödel set theory-- Von Neumann bicommutant theorem-- Von Neumann cardinal assignment-- Von Neumann conjecture-- Von Neumann ...
Kardar–Parisi–Zhang equation for bacteria surface growth models; Kermack-McKendrick theory in infectious disease epidemiology; Kuramoto model in biological and chemical oscillations; Mackey-Glass equations; McKendrick–von Foerster equation in age structure modeling; Nernst–Planck equation in ion flux across biological membranes
Equifinality is the principle that in open systems a given end state can be reached by many potential means. The term and concept is due to the German Hans Driesch, the developmental biologist, later applied by the Austrian Ludwig von Bertalanffy, the founder of general systems theory, and by William T. Powers, the founder of perceptual control theory.