Demographic transition is a set of changes in reproductive behaviour that are experienced as a society is transformed from a traditional pre-industrial state to a highly developed, modernized structure. The transformation is the substitution of slow growth achieved with low fertility and...

We estimate the death rate of United States troops deployed to Iraq from the beginning of the US invasion through 30 September 2006. Eighty percent of the deaths in Iraq were combat-related. The death rate in Iraq is lower than that of the civilian population of the United States but...

Conventional measures of long-term population growth such as the intrinsic growth rate and the net reproduction rate assume migration rates to be zero. We develop expressions for analogous measures that register the impact of net migration rates, and we develop a simple method of estimating...