Results 21 to 30 of about 4,738,629 (286)

On the unboundedness of the ratio of species and resources for the diffusive logistic equation [PDF]

open access: yesDiscrete & Continuous Dynamical Systems - B, 2020
Concerning a class of diffusive logistic equations, Ni [1, Abstract] proposed an optimization problem to consider the supremum of the ratio of the L^1 norms of species and resources by varying the diffusion rates and the profiles of resources, and ...
Jumpei Inoue, Kousuke Kuto
semanticscholar   +1 more source

Bias Due to Averaging the Logistic and SI Models

open access: yesMathematics, 2023
Modelers have choices in how they approach a problem, with different approaches potentially leading to different outcomes. Sometimes one approach gives a consistently lower (or higher) result than another.
Dorothy I. Wallace
doaj   +1 more source

Nonlinear equations to determine the growth curve of immunocastrated pigs [PDF]

open access: yesPesquisa 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
doaj   +2 more sources

Local Dynamics of Logistic Equation with Delay and Diffusion

open access: yesMathematics, 2021
The behavior of all the solutions of the logistic equation with delay and diffusion in a sufficiently small positive neighborhood of the equilibrium state is studied.
Sergey Kashchenko
doaj   +1 more source

Dissolved Oxygen-And Temperature-Dependent Simulation of the Population Dynamics of Moon Jellyfish (Aurelia coerulea) Polyps

open access: yesDiversity, 2021
As the extent of hypoxia in coastal waters increases, the survivorship of jellyfish polyps relative to that of competing sessile organisms often increases, enabling them to reproduce more prolifically, leading to a medusa bloom in the following year ...
Hongsung Jin   +3 more
doaj   +1 more source

Global Dynamics of a Novel Delayed Logistic Equation Arising from Cell Biology [PDF]

open access: yesJournal of nonlinear science, 2019
The delayed logistic equation (also known as Hutchinson’s equation or Wright’s equation) was originally introduced to explain oscillatory phenomena in ecological dynamics.
R. Baker, G. Röst
semanticscholar   +1 more source

On an Sir Epidemic Model for the COVID-19 Pandemic and the Logistic Equation

open access: yes, 2020
The main objective of this paper is to describe and interpret an SIR (Susceptible-Infectious-Recovered) epidemic model though a logistic equation, which is parameterized by a Malthusian parameter and a carrying capacity parameter, both being time-varying,
M. de La Sen, A. Ibeas
semanticscholar   +1 more source

On a Diffusive Logistic Equation

open access: yesJournal of Mathematical Analysis and Applications, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Afrouzi, G.A, Brown, K.J
openaire   +2 more sources

Integration of the stochastic logistic equation via symmetry analysis [PDF]

open access: yesJournal of Nonlinear Mathematical Physics, 2019
We apply the recently developed theory of symmetry of stochastic differential equations to a stochastic version of the logistic equation, obtaining an explicit integration, i.e.
G. Gaeta
semanticscholar   +1 more source

Fractional Euler numbers and generalized proportional fractional logistic differential equation

open access: yesFractional Calculus and Applied Analysis, 2022
We solve a logistic differential equation for generalized proportional Caputo fractional derivative. The solution is found as a fractional power series. The coefficients of that power series are related to the Euler polynomials and Euler numbers as well ...
J. Nieto
semanticscholar   +1 more source

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