The Experts below are selected from a list of 8985 Experts worldwide ranked by ideXlab platform
Gunter Steinmann - One of the best experts on this subject based on the ideXlab platform.
-
immigration into a Population with fertility below replacement level the case of germany
Population Studies-a Journal of Demography, 1992Co-Authors: Gustav Feichtinger, Gunter SteinmannAbstract:In this paper Stable Population Theory is used to study the demographic effects of a steady stream of immigrants into a Population with fertility below replacement level. It is assumed that the fertility of foreigners (persons born outside the country) is higher than that of the native-born. We present a discrete-time Leslie-type model and analyse its asymptotic stationary behaviour. We prove that the asymptotic ratio between foreign-born and native-born does not depend on the size of the immigration flow, but solely on the relative fertility of the two groups, the sex ratio, and age distribution of the immigrants. In contrast to the continuous-time approach in which deep results of renewal Theory have been used to establish this result, our proof is elementary. The analytical model is supplemented by numerical simulations with German data which show the effects of continuous immigration on the size of the Population and on the ratio of foreign-born citizens in the united Germany under different demograph...
Gustav Feichtinger - One of the best experts on this subject based on the ideXlab platform.
-
immigration into a Population with fertility below replacement level the case of germany
Population Studies-a Journal of Demography, 1992Co-Authors: Gustav Feichtinger, Gunter SteinmannAbstract:In this paper Stable Population Theory is used to study the demographic effects of a steady stream of immigrants into a Population with fertility below replacement level. It is assumed that the fertility of foreigners (persons born outside the country) is higher than that of the native-born. We present a discrete-time Leslie-type model and analyse its asymptotic stationary behaviour. We prove that the asymptotic ratio between foreign-born and native-born does not depend on the size of the immigration flow, but solely on the relative fertility of the two groups, the sex ratio, and age distribution of the immigrants. In contrast to the continuous-time approach in which deep results of renewal Theory have been used to establish this result, our proof is elementary. The analytical model is supplemented by numerical simulations with German data which show the effects of continuous immigration on the size of the Population and on the ratio of foreign-born citizens in the united Germany under different demograph...
Bongoh Kye - One of the best experts on this subject based on the ideXlab platform.
-
intergenerational transmission of women s educational attainment in south korea an application of a multi group Population projection model
Demographic Research, 2011Co-Authors: Bongoh KyeAbstract:Abstract Using a multi-group Population projection model, this study examines the implications of educational mobility and differential demographic rates on changing women's educational distribution in South Korea. This article focuses on the implications of a differential Population renewal process on educational mobility, which has not been extensively examined in previous studies of social mobility. My findings suggest, first, that differential demographic rates have no substantial influence on the educational distribution, because of substantial educational mobility. Second, that intergenerational association and structural change matter in the long run, with stronger intergenerational association and more structural change leading to increases in women's level of education. Finally, that educational mobility and differential fertility are interdependent processes that jointly influence differential Population replacement, but the fertility gap between education groups would have to be unreasonably large to be influential, due to the extraordinarily high educational mobility in South Korea. (ProQuest: ... denotes formulae omitted.) 1. Introduction: Demography and social mobility This study examines intergenerational transmission of women's educational attainment in South Korea as a process jointly determined by educational mobility, differential fertility, and differential mortality. Most previous studies on social mobility have focused on intergenerational association in socioeconomic outcomes (e.g., education and occupation) based on existing parent-offspring dyads. Departing from this approach, this study examines the implications of differential demographic rates, intergenerational association, and structural change between generations for the transmission of socioeconomic status across generations as a whole. First, the approach in most previous research has not fully examined how differential reproductive behaviors affect social mobility. Research in social mobility has applied a variety of statistical models, such as path analysis and structural equation models for status attainment process (Blau and Duncan 1967; Hauser, Tsai, and Sewell 1983), log-linear models for intergenerational occupational mobility (Erikson and Goldthorpe 1992; Hout 1984, 1988), and schooling progression-ratio models for educational attainment (Mare 1981; Shavit and Blossfeld 1993). All these models aim at estimating net intergenerational association in socioeconomic outcomes after controlling for potential confounders and change in marginal distributions. Although this approach demonstrates how offspring's socioeconomic outcomes depend on parental socioeconomic status, the implications of socioeconomic differentials in demographic behaviors for status transmission have not been widely studied. This is unfortunate, because intergenerational transmission of socioeconomic status is intrinsically "the process by which a socioeconomically differentiated Population reproduces itself" (Mare 1997: 265). Such recognition is not new - demographic models for social mobility were developed as early as the 1950s. Prais (1955) adopted a Stable Population Theory to study social mobility, showing that occupational distributions approach a "Stable-equivalent" state independent of the initial state when mobility rates remain constant over time. Although Prais recognized possible complications due to demographic processes, his model did not take into account differential fertility and mortality (Prais 1955: 80). Matras published a series of papers that incorporated differential demographic processes into social mobility. He applied Prais's model (1955) using empirical data (Matras 1960), incorporated differential fertility by occupation (Matras 1961), and examined the effect of fertility timing on Population distribution in later periods (Matras 1967). These studies applied a multi-group Population projection that assumes constant mobility and differential reproduction rates over a long period of time. …
Riviere P G - One of the best experts on this subject based on the ideXlab platform.
-
The Population Dynamics and Fertility of the Trio of Surinam: An Application of a Two Census Method
DigitalCommons@WayneState, 2020Co-Authors: Gage T B, Dyke B, Riviere P GAbstract:A method of estimating the parameters of Population growth, based upon nonStable Population Theory, is presented. Data required for this method consist of age structures taken from two censuses, and the distribution of parental ages at birth. These data are typically more reliable and easier to collect than those required for traditional methods relying upon Stable Population Theory. The net maternity function, intrinsic rate of increase, and other stability properties are examined for the Trio of Surinam. Fertility characteristics also are obtained using a life table derived from the same data. In general the results suggest that the Trio maintain a moderate rate of increase, short generation times, moderately low fertility and relatively long birth intervals
Emilio Zagheni - One of the best experts on this subject based on the ideXlab platform.
-
The Leverage of Demographic Dynamics on Carbon Dioxide Emissions: Does Age Structure Matter?
Demography, 2011Co-Authors: Emilio ZagheniAbstract:This article provides a methodological contribution to the study of the effect of changes in Population age structure on carbon dioxide (CO_2) emissions. First, I propose a generalization of the IPAT equation to a multisector economy with an age-structured Population and discuss the insights that can be obtained in the context of Stable Population Theory. Second, I suggest a statistical model of household consumption as a function of household size and age structure to quantitatively evaluate the extent of economies of scale in consumption of energy-intensive goods, and to estimate age-specific profiles of consumption of energy-intensive goods and of CO_2 emissions. Third, I offer an illustration of the methodologies using data for the United States. The analysis shows that per-capita CO_2 emissions increase with age until the individual is in his or her 60s, and then emissions tend to decrease. Holding everything else constant, the expected change in U.S. Population age distribution during the next four decades is likely to have a small, but noticeable, positive impact on CO_2 emissions.