都市システムにおける都市犯罪の研究 : 都市犯罪の相互影響を中心として
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概要
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This paper focuses on the theoretical and methodological issues of the MEUC (Mutual Effect of Urban Crime) among cities. It must be emphasized that the crime trend of a city is not only affected by the circumstances of the city but also by the crime trends of other surrounding cities, because of the economic relationship among these cities. In order to analyze the MEUC, FPF (Feature Primary Factors) is constructed. It is defined as, E = (e_1, e_2,・・・・・・, e_n) and e_i = MX_i ・ X_<ji> Where MX_i is a correlation coefficient between the amount of crime and the i-th variable of a city. The i-th variable is a city index relative to the crime trend. X_<ji> is an average of the j years of the i-th city index (j≧5). The correlation coefficient of the FPF between two cities, C is treated as approximation of true C-MEUC (coefficient of MEUC), which can be defined as F_<AB> = M_<AB>・C Where M<AB> = P<AB>^α・S_B^β・J_B^γ・D<AB>^δ・V_A^ε is the medium of MEUC between the two cities, and can be calculated based on the result of actual investigations. The C-MEUCs among 49 cities in Tokyo indicate, interesting phenomena that can be called as CUC (Concentration of Urban Crime) and EUC (Extension of Urban Crime). Furthermore, this paper propposes the hypothesis that every city holds the energy of urban crime, UCE (Urban Criminal Energy), is proposed. According to the hypothesis, every ciry radiates the UCE which produces MEUC in urban systems. The UCE can be tried to calculated by the FPF.
- 日本犯罪社会学会の論文