The stability of a delayed stage--structured population growth model with feedback controls 来自 知网 喜欢 0 阅读量: 28 作者:X Ding,S Cheng 摘要: In this paper, a model of stage-structured population dynamics with feedback controls is investigated. It is proved that the positive equilibrium ...
The model that explains why rapid population growth happens is called the “demographic transition.” It is shown in the schematic figure below. It is a beautifully simple model that describes the observed pattern in countries around the world and is one of the great insights of demography.6 ...
UpdatedApr 28, 2023 R Predator-prey population model with intervention analysis techniques. Completed during third year of my Bachelor's degree (2019). population-projectionsstochastic-modelling UpdatedOct 18, 2021 MATLAB Built Settlement Growth Model - extrapolation. Published article DOI 10.3390/rs12101...
Urban and rural population growth in a spatial panel of municipalities. Regional Studies. Using Bayesian posterior model probabilities and data pertaining to 3659 Brazilian minimum comparable areas (MCAs) over the period 1970–2010, two theoretical settings of population growth dynamics resulting in two...
We show here that population growth, resolved at the county level, is spatially heterogeneous both among and within the U.S. metropolitan statistical areas. Our analysis of data for over 3,100 U.S. counties reveals that annual population flows, resulting
While this model, being linear, would clearly be a simplification of growth, even in this worst-case scenario, it still improves on the common method of using the first principal component. Specifically the first principal component is simply the dimension of greatest variation within the sample....
A population expansion was further supported by the Coalescent Exponential Population model where the growth rate was significantly different from 0 (mean = 3.7238e−6, CI95% = 1.3998e−6–6.2791e−6). The Extended Bayesian Skyline Plot analysis also showed that C. auratus ...
The population growth of Forest Musk Deer was quite slow before 2000 [25], but the last two decades have seen a relatively rapid increasing, with more than 11,340 individuals in captivity in Shaanxi Province, China (https://china.huanqiu.com/article/9CaKrnJWMYT). During the breeding, ...
scholars have proposed a number of ways by which humans could have had a significant impact on megafauna populations that do not invoke widespread overhunting and significant population growth. Some have suggested that the depletion of keystone megaherbivores—those animals that have a disproportionately...
Future research avenues include development of an optimal control model of the electricity consumption function that reflects the nexus between electricity consumption, electricity market policy change, and economic growth. This model would require an in-depth analysis of optimization of electricity intensity...