Results 41 to 50 of about 595,693 (193)

Metastases Growth Patterns in vivo—A Unique Test Case of a Metastatic Colorectal Cancer Patient

open access: yesFrontiers in Applied Mathematics and Statistics, 2019
Colorectal cancer (CRC) is one of the most common causes of cancer-related mortality worldwide. Most cases of deaths result from metastases, assumed to be shed, in many cases, before disease detection.
Gili Hochman   +4 more
doaj   +1 more source

Nonlinear models to describe height and diameter of sugarcane RB92579 variety

open access: yesRevista Ciência Agronômica, 2020
Brazil is the world’s largest sugarcane producer (Saccharum spp.), followed by India and China. In 2019, Brazil produced 642.7 million tons of sugarcane, having collected 1.44 billion and 983.52 million dollars from sugar and ethanol exports ...
Sérgio Alberto Jane   +3 more
doaj   +1 more source

Pricing Pandemic Bonds under Hull–White & Stochastic Logistic Growth Model

open access: yesRisks, 2023
Pandemic bonds can be used as an effective tool to mitigate the economic losses that governments face during pandemics and transfer them to the global capital market.
Vajira Manathunga, Linmiao Deng
doaj   +1 more source

Halo-shaped bifurcation curves in ecological systems

open access: yesElectronic Journal of Differential Equations, 2014
We examine the structure of positive steady state solutions for a diffusive population model with logistic growth and negative density dependent emigration on the boundary. In particular, this class of nonlinear boundary conditions depends on both the
Jerome Goddard II, Ratnasingham Shivaji
doaj  

Mathematical Modeling and Simulation of Logistic Growth

open access: yesApplied Sciences
We propose a reproducible pipeline of work consisting of the time-driven simulation of discrete logistic growth based on the corresponding master equation, focusing on demographic variation under a carrying capacity limit.
Camilla Pelagalli   +2 more
doaj   +1 more source

Estimation of the parameters of a stochastic logistic growth model [PDF]

open access: yes, 2013
We consider a stochastic logistic growth model involving both birth and death rates in the drift and diffusion coefficients for which extinction eventually occurs almost surely.
Campillo, Fabien   +2 more
core   +2 more sources

Extended logistic growth model for heterogeneous populations [PDF]

open access: yesJournal of Theoretical Biology, 2017
AbstractCell proliferation is the most important cellular-level mechanism responsible for regulating cell population dynamics in living tissues. Modern experimental procedures show that the proliferation rates of individual cells can vary significantly within the same cell line.
Jin, Wang   +2 more
openaire   +3 more sources

Density-Dependence as a Size-Independent Regulatory Mechanism

open access: yes, 2005
The growth function of populations is central in biomathematics. The main dogma is the existence of density dependence mechanisms, which can be modelled with distinct functional forms that depend on the size of the population.
Allee   +42 more
core   +2 more sources

Mathematical Model of \u3cem\u3eChlorella minutissima\u3c/em\u3e UTEX2341 Growth and Lipid Production Under Photoheterotrophic Fermentation Conditions [PDF]

open access: yes, 2011
To reduce the cost of algal biomass production, mathematical model was developed for the first time to describe microalgae growth, lipid production and glycerin consumption under photoheterotrophic conditions based on logistic, Luedeking–Piret and ...
Hristova, Krassimira R.   +5 more
core   +1 more source

Non-linear density dependence in time series is not evidence of non-logistic growth

open access: yes, 2008
Time series of population density are often used to seek deviations from logistic regulation by testing for a non-linear decline in per capita growth rate with density.
Doncaster, C. Patrick
core   +1 more source

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