Population and Society

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Author:
Ninimew
ID:
270471
Filename:
Population and Society
Updated:
2014-04-13 19:10:38
Tags:
soc
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  1. Revenstein's first law
    Migrants only proceed a short distance. Migrants enumerated in a certain center of absorption will grow less as distance from the center increases.
  2. the Gravity Model
    Migration stream depends on 3 conditions: population size at origin (Pi), population size at destination (Pj), and the geographic distance between i and j, or Dij

    Mij = (PiPj/Dij) * K. (k is a constant.)
  3. Migrants proceeding long distances generally go by preference to
    one of the great centers of commerce or industry
  4. An increase in the means of locomotion and a development of manufactures and commerce have led to
    an increase in immigration

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