-replacement fertility schedule f and life table l. Each corresponds to a different pattern of age-specific annual immigrant inflows. This … brief paper derives a general formula for the age structure of these populations, provides numerical examples using …

perhaps age 105 in China, we think that this convergence may be mainly due to mortality selection in the heterogeneous Chinese … population. We show that in China, as in developed countries, the rate of increase in mortality with age decelerates at very old … rates after age 97 for both males and females. Because reports of age seem to be serviceably reliable up to age 100 and …

This study examines the existence of tempo effects in mortality and evaluates the procedure developed by Bongaarts and … an indicator reflecting current mortality conditions under specific assumptions regarding the effects of changing period … mortality conditions on the timing of future cohort deaths. It is argued, however, that currently there is no clear evidence …

decomposition of the change over time in the average age at childbearing and in the general fertility rate for China, Denmark and … change. The decomposition is applied to time derivatives of averages over age and over subpopulations. Examples include …

fertility, migration, and mortality. Both disciplines share a common research object, namely human populations, and they focus …

quantum. I stress similarities between the results for fertility and mortality, particularly in terms of mean age of … tempo under changing fertility and mortality that share a synthetic cohort interpretation with the adjusted measure of … childbearing and mean age at death, but also note some important distinctions. I conclude that the fertility adjustments can help …

Humans, and many other species, suffer senescence: mortality increases and fertility declines with adult age. Some … species, however, enjoy sustenance: mortality and fertility remain constant. Here we develop simple but general evolutionary …