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  • 都市階層・構造への影響に関する考察
    安藤 亮介, 谷口 守, 松中 亮治
    土木計画学研究・論文集
    2006年 23 巻 171-177
    発行日: 2006/09/30
    公開日: 2010/06/04
    ジャーナル フリー
    高速道路や新幹線など、空間抵抗を解消するインフラ整備は都市階層や構造を現在までに大きく変えてきた。今後はIT化が都市階層・構造の変化に及ぼす影響が大きいと考えられるが、その実態は全く明らかにされていない。本研究ではサイバー空間上に進出している店舗を実際に抽出し、その実空間上での立地場所を特定することで、IT化が店舗立地を通じて都市階層・構造の変化に及ぼす可能性を明らかにした。分析の結果、全体の傾向としてはむしろ一極集中が進むことや、現在までは立地が考えられなかった遠隔地に店舗立地が見られるケースもあることを具体的に明らかにした。
  • ―eコマース上のショッピング行動に着目して―
    谷口 守, 松中 亮治, 安藤 亮介
    地域学研究
    2005年 35 巻 1 号 69-84
    発行日: 2005年
    公開日: 2007/06/01
    ジャーナル フリー
    The barrier presented by distance has gradually been removed by high-speed transportation systems over the last century. As a result, hub cities have experienced economic growth. In other words, hinterland of each city has been reformed by these new transportation systems. It is needless to say that spreading information technologies (IT) open the door for new world, namely it could cause more drastic changes on the order of world cities. In order to achieve an efficient infrastructure and an affluent society, the conformational changes occurring in societies and regions as a result of the new technology must be examined beforehand.
    The objective of this study is to estimate the changes of the order of world cities, caused by distance free cyber-space, that are created by IT. A couple of analyses based on different assumptions are examined below.
    1) Language barriers are assumed to be the greatest obstacles to the exchange of information. To estimate the new order of cities in each language unit, composition ratio of the demographics and the number of net sites are compared.
    2) From a global point of view, no barrier is assumed in the world. The concept of globality is defined, as the potentiality to invite more cyber access to that city. Model analysis is also examined to clarify factors to affect globality.
    From these analyses, it is clarified that each language unit shows different future. More concentration could occur in Japan and France, and more dispersion could occur in Germany. It is also found that the complex of IT industries in the U.S.A. is likely to obtain higher globality. Therefore, it is said that the order of world cities, namely city rank, could change in the world in information era.
    JEL classification : R12, R14
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