On the Three Properties of Stationary Populations and Knotting with Non-stationary Populations.

On the Three Properties of Stationary Populations and Knotting with Non-stationary Populations.
Bull Math Biol. 2019 Aug 02;:
Authors: Rao ASRS, Carey JR
Abstract
A population is considered stationary if the growth rate is zero and the age structure is constant. It thus follows that a population is considered non-stationary if either its growth rate is nonzero and/or its age structure is non-constant. We propose three properties that are related to the stationary population identity (SPI) of population biology by connecting it with stationary populations and non-stationary populations which are approaching stationarity. One of these important properties is that SPI can be applied to partition a population into stationary and non-stationary components. These properties provide deeper insights into cohort formation in real-world populations and the length of the duration for which stationary and non-stationary conditions hold. The new concepts are based on the time gap between the occurrence of stationary and non-stationary populations within the SPI framework that we refer to as Oscillatory SPI and the Amplitude of SPI.
PMID: 31376062 [PubMed - as supplied by publisher]

Source: Bulletin of Mathematical Biology - August 1, 2019 Category: Bioinformatics Authors: Rao ASRS, Carey JR Tags: Bull Math Biol Source Type: research