نتایج جستجو برای: dependency ratio
تعداد نتایج: 540425 فیلتر نتایج به سال:
We forecast the old-age dependency ratio for Australia under various pension age proposals, and estimate a scheme that will provide stable at specified level. Our approach involves stochastic population forecasting method based on coherent functional data models mortality, fertility net migration, which we use to simulate future age-structure of population. results suggest Australian should be ...
The age group composition of populations varies substantially across continents and within countries, and is linked to levels of development, health status and poverty. The subnational variability in the shape of the population pyramid as well as the respective dependency ratio are reflective of the different levels of development of a country and are drivers for a country's economic prospects ...
Perceptual systems face competing requirements: improving signal-to-noise ratios of noisy images, by integration; and maximising sensitivity to change, by differentiation. Both processes occur in human vision, under different circumstances: they have been termed priming, or serial dependencies, leading to positive sequential effects; and adaptation or habituation, which leads to negative sequen...
Minimizing the dependency ratio in a population with below-replacement fertility through immigration
Many industrialized countries face fertility rates below replacement level, combined with declining mortality especially in older ages. Consequently, the populations of these countries have started to age. One important indicator of age structures is the dependency ratio which is the ratio of the nonworking age population to the working age population. In this work we find the age-specific immi...
Objectives: Ageing and its consequences at the onset of the third millennium is becoming one of the major population-related issues in all countries. Methods & Materials: At present, Iran is undergoing a population transformation from a young age structure to an old age one. Although at the time being the elderly population (60 years and over) is rather small proportion of total population, ...
Minimizing the dependency ratio in a population with below-replacement fertility through immigration
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