第2部わが国のコーホートの地域的分布の変化について(人口構造の変化が社会経済構造に及ぼす影響に関する研究,共同研究)

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The purpose of this paper is to clarify the characteristics of the change of the spatial distribution of population in Japan, by using the indicators of the pattern and the central location of the distribution of population of cohorts. In this paper, when the change of the pattern of the distribution of population of a cohort which has years of age from x to x+h-1 at time t during the period from time t to time t+h is measured quantitatively, the "index of the change of pattern of distribution of population of cohort" Δ_<D(t)>^<(x)> is used. This index proposed here was derived from the Hoover's "index of population concentration." If the change is not found during the period observed, the value of the index becomes 0, and if the change is strong, the value becomes large and approaches to 1. On the other hand, when the change or movement of the central location of the distribution of population of a cohort is observed, the "traces of the position of cohort," the traces of the position of cohort by birth year group and by age group, are used. The trace of the position of cohort by birth year group is the straight line obtained by connecting the central locations or central points [P_t^<(x)>] and [P_<t+h>^<(x+h)>], while the trace of the position of cohort by age group is the straight line obtained by connecting the central points [P_t^<(x)>] and [P_<t+h>^<(x)>], where [P_t^<(x)>] is the central point of the spatial distribution of population of cohort which has years of age from x to x+h-1 at time t. Among the two traces, the former is regarded as the substantial or ecological record of the movement of the central point of the spatial distribution of the population of a cohort, and the latter is regarded as the formal or historical record of the movement of the distribution of the population of a certain age group. In general, we can use the center of population and the population center as the central point of the distribution of population. Here, we can also use these indicators for expressing the central location of the population of a cohort. The center of population is the location at which the total value of the squares of the lengths of the movements of people becomes the smallest when the people move along straight lines to gather at a point, while the population center is the location at which the total length of the movements of people to gather at a point becomes the smallest. According to the results of the examination performed by using the indicators mentioned above. We could find that (1) the cohorts which have years of age from 10 to 14 and from 15 to 19 move actively for entering school and getting employment and the pattern of the distribution of population of these cohorts changed drastically (from the analysis by the index of the change of pattern of distribution of population of cohort), and (2) the directions of main streams of migration of cohorts which are the streams of migration of cohorts which have years of age from 10 to 14 and from 15 to 19 are the direction of the central point of net product (from the analysis by the traces of the position of cohort). But these analyses, we can conclude that the main part of the migration of population, which consists of the streams of migration of population of young cohorts, which have years of age from 10 to 14 and from 15 to 19 is influenced very strongly by economic factors, even though it is discussed that migration of population is influenced by social and economic factors and we must consider the influence from these factors when we analyze the interregional migration of population.
日本大学の論文
1979-12-20

第2部わが国のコーホートの地域的分布の変化について(人口構造の変化が社会経済構造に及ぼす影響に関する研究,共同研究)

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第2部 わが国のコーホートの地域的分布の変化について(人口構造の変化が社会経済構造に及ぼす影響に関する研究,共同研究)

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第2部わが国のコーホートの地域的分布の変化について(人口構造の変化が社会経済構造に及ぼす影響に関する研究,共同研究)