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Demographic transition. In demography, demographic transition is a phenomenon and theory which refers to the historical shift from high birth rates and high death rates in societies with minimal technology, education (especially of women) and economic development, to low birth rates and low death rates in societies with advanced technology ...
The Zelinsky Model of Migration Transition, [1] also known as the Migration Transition Model or Zelinsky's Migration Transition Model, claims that the type of migration that occurs within a country depends on its development level and its society type. It connects migration to the stages within the Demographic Transition Model (DTM).
Epidemiological transition. Diagram showing sharp birth rate and death rate decreases between Time 1 and Time 4, the congruent increase in population caused by delayed birth rate decreases, and the subsequent re-leveling of population growth by Time 5. In demography and medical geography, epidemiological transition is a theory which "describes ...
Environmental risk transition is the process by which traditional communities with associated environmental health issues become more economically developed and experience new health issues. [1] [2] In traditional or economically undeveloped regions, humans often suffer and die from infectious diseases or of malnutrition due to poor food, water ...
the demographic transition from "population explosion" to (dynamic) stability or decline. Other subfields include measuring value of life and the economics of the elderly and the handicapped and of gender, race, minorities, and non-labor discrimination.
Population pyramid. A population pyramid (age structure diagram) or " age-sex pyramid " is a graphical illustration of the distribution of a population (typically that of a country or region of the world) by age groups and sex; it typically takes the shape of a pyramid when the population is growing. [1] Males are usually shown on the left and ...
Data unavailable. In Demography, the rate of natural increase ( RNI ), also known as natural population change, is defined as the birth rate minus the death rate of a particular population, over a particular time period. [1] It is typically expressed either as a number per 1,000 individuals in the population [2] or as a percentage. [3]
Political demography. Political demography is the study of the relationship between politics and population change. [1] Population change is driven by classic demographic mechanisms – birth, death, age structure, and migration . However, in political demography, there is always scope for assimilation as well as boundary and identity change ...