住宅地における転居率について : 住宅地における人口構造(2)

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The mechanism for population to change is divided in two; (1) change of in-community population, (2) immigrant from out-community. Considering composition of family types defined in a papers, in-community population become older, the new-comers are consisted of younger types. And what decides the direction of change is the ratio of number of immigrated family to that of existing family. To obtain some data about this ratio 4 communities were examined, one existing community and 3 new developed ones. To calculate emigration ratio (p), two methods were adopted. 1. To define ratio (p) emigration in a year per existing family. For this purpose long observation had been done. 2. To find years the family in-community have been living. But the emigration in every year=a, the distribution of years from time for families to have come the community to time of observation=ψ(x), and [numerical formula] Then ψ(x)=ae^<-bx>, b=1/m and ratio (p)=1-e^<-b> 2-1. when m is calculated, ratio (p) is obtained to be equal 1-e^<-1/m> 2-2. when ψ(x) is settled, a and p are obtained easily. Summary of results about the emmigration ratio 1. The ratio differs when the times of observation differs. 2. The ratio differs when the region, such as Tokyo, Osaka or Fukuoka, differs in which the community belongs. 3. The ratio is low when the new developed community is valued highly in relation with the mother city. 4. The ratio differs when family type differs, for example, families in younger type have higher ratio. 5. The ratio differs when the type of house differs. The ratio in relation to type of house is composed of family types and the result No. 4. * The Population Structure of Community (I) by Hiroshi Dohi.
社団法人日本建築学会の論文
1964-12-30

住宅地における転居率について : 住宅地における人口構造(2)

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