population

Examples of population in the following topics:

• The Future of Population and Urbanization

• Global Aging Trends

  • Globally, most countries are seeing the average life expectancy of their populations increase.
  • The varied life expectancies and younger populations are illustrated in the map below, which depicts the percentage of each country's population that is over 65.
  • It is pretty clear from the map that more developed countries have much older populations and a greater percentage of their population is aged 65+.
  • More developed countries have older populations as their citizens live longer.
  • Less developed countries have much younger populations.

• Introduction

  • Demography is the study of human population dynamics.
  • It encompasses the study of the size, structure and distribution of populations, and how populations change over time due to births, deaths, migration, and aging.

• Population Trends

  • Despite an overall pattern of growth, population trends are not even across countries.
  • About half the world population lives in nations with sub-replacement fertility.
  • Presently, the world's population grows by approximately 80 million annually.
  • Once the population exceeded the planet's carrying capacity, the population would be restrained through mass famine and starvation.
  • The majority of world population growth today is occurring in less developed countries.

• Global Aging

  • China can expect to confront an aging population in the foreseeable future if this trend, among others, persists.
  • Unfortunately, in some countries HIV/AIDS has ravaged the population to the point where the average life expectancy drops.
  • The economic effects of an aging population are considerable.
  • However population aging also increases some categories of expenditure, including some from public finances.
  • Discuss the impact of an aging population on the economy, for example, in terms of health care costs

• Population Transfer

  • Population transfer is the movement of a large group of people from one region to another by state policy or international authority.
  • Population exchange is the transfer of two populations in opposite directions at about the same time.
  • The view of international law on population transfer underwent considerable evolution during the 20th century.
  • There is now little debate about the general legal status of involuntary population transfers, as forced population transfers are now considered violations of international law.
  • The Occupying Power shall not deport or transfer parts of its own civilian population into the territory it occupies.

• Three Demographic Variables

  • Demography is the statistical study of human populations.
  • (Births - Deaths) +/- ((In-Migration) - (Out Migration)) = Population Change.
  • This basic equation can be applied to populations and subpopulations.
  • For example, the population size of ethnic groups or nationalities within a given society or country is subject to the same sources of change as the national population.
  • This means that population growth in the US is due to inward migration, rather than a high birthrate.

• Population Growth and Overpopulation

  • In other words, it is a ratio: population over resources.
  • As the population exceeds the amount of available resources the population decreases through famine, disease, or war, since the lack of resources causes mortality to increase.
  • This idea is only slightly less problematic than the idea that human population growth is not guided by food production, as it suggestions that that every time food production is intensified to feed a growing population, the population responds by increasing even more.
  • For some, the concept that human populations behave in the same way as do populations of bears and fish is hard to believe; for others it indicates a feasible solution to population issues.
  • In either case, since populations are tied to the food they consume, discussions of populations should not take place without considering the role played by food supply.

• Implications of Different Rates of Growth

  • Fertility rates above the replacement level will cause the population to grow; fertility rates below the replacement level will cause the population to shrink.
  • In other words, it is a ratio: population to resources.
  • Presently, every year the world's human population grows by approximately 80 million.
  • However, that population growth is not distributed evenly across all countries.
  • Rapid population growth in Indian cities has resulted in vast slums as populations have exceeded available land and housing.

• Populations, samples, and boundaries

  • Most commonly, network analysts will identify some population and conduct a census (i.e. include all elements of the population as units of observation).
  • The populations that network analysts study are remarkably diverse.
  • Perhaps most common, of course, are populations of individual persons.
  • The boundaries of the populations studied by network analysts are of two main types.
  • This type of design (which could use sampling methods to select populations) allows for replication and for testing of hypotheses by comparing populations.