منابع مشابه
Population Models with Age and Space Structure
In this thesis, basic concepts of populational models are studied from a theoretical point of view, especially the long term behaviours. All models are at least time dependent with additional age structure, spatial structure. The last model which is an extension of the von Foerster equation, is dependent on all o f these structures and have a long-term solution for large values of time. Modelin...
متن کاملOn the dynamics of the age structure, dependency, and consumption.
We examine the effects of population aging due to declining fertility and rising elderly life expectancy on consumption possibilities in the presence of intergenerational transfers. Our analysis is based on a highly tractable continuous-time overlapping generations model in which the population is divided into three groups (youth dependents, workers, and elderly dependents) and lifecourse trans...
متن کاملThe Dynamics of the Age Structure , Dependency , and Consumption ∗
We examine the dynamic interaction of the population age structure, economic dependency, and fertility, paying particular attention to the role of intergenerational transfers. In the short run, a reduction in fertility produces a “demographic dividend” that allows for higher consumption. In the long run, however, higher old-age dependency can more than offset this effect. To analyze these dynam...
متن کاملUncertain population model with age-structure
The partial differential equation has been vastly applied to analyzing the problems in the life sciences. However, these types of partial differential equation models are mostly deterministic. As we know, the real life is full of uncertain factors, hence the above deterministic partial differential equations are not enough to handle the problems with uncertain noises. For modelling these proble...
متن کاملFlux and Flux: Population Dynamics and Age Structure of Starlings
At Belmont, Lower Hutt, a population of starlings which nested in 500 nest boxes on 1500 ha of pasture land was studied from 1970 to 1979. In total, 750 breeding females and 60 males were individually banded, and of 4006 chicks that Hedged 258 females returned to nest in the study area. In different years, 3-60% of the females attempted a second clutch after a successful first brood. Clutch siz...
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ژورنال
عنوان ژورنال: Journal of Population Economics
سال: 2006
ISSN: 0933-1433,1432-1475
DOI: 10.1007/s00148-006-0088-5