haku: @author Krugman, P. / yhteensä: 14
viite: 5 / 14
| Tekijä: | Krugman, P. |
| Otsikko: | Confronting the mystery of urban hierarchy |
| Lehti: | Journal of the Japanese and International Economies
1996 : DEC, VOL. 10:4, p. 399-418 |
| Asiasana: | ECONOMICS JAPAN INTERNATIONAL |
| Kieli: | eng |
| Tiivistelmä: | The size distribution of cities in the United States is startlingly well described by a simpler power law: the number of cities whose population exceeds S is proportional to 1/S. This simple regularity is puzzling; even more puzzling is the fact that it ahs apparently remained true for at least the past century. Standard models of urban systems offer no explanation of the power law. A random growth model proposed by Herbert Simon 40 years ago is the best try to date -- but while it can explain a power law, it cannot reproduce one with the right exponent. |
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