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    Please use this identifier to cite or link to this item: https://nccur.lib.nccu.edu.tw/handle/140.119/47678


    Title: Change of Urban Structure
    Other Titles: 都市結構變動之模擬分析
    Authors: 陳心蘋
    Chen,Hsin-Ping
    Date: 1998-05
    Issue Date: 2010-10-26 15:41:27 (UTC+8)
    Abstract: 都市分散化與次中心的形成是當代都市結構的趨勢。美國近代各大城市資料顯示明顯的就業郊區化與人口分散化的現象。理論上，次中心的形成因素主要是聚集經濟的影響、勞動力接近度、交通條件以及市中心負的聚集經濟外部效果。本文目的在由推導之都市成長模型，探討次中心形成的主要因素：(1)聚集經濟的變化是如何影響次中心的形成，以至於影響都市結構。(2)交通成本在次中心形成與都市結構變化中所扮演的角色。研究結果顯示：(1)次中心的形成與交通成本的演化相關。(2)當交通成本低於某臨界值，交通成本越低，都市人口密度變化率(population density gradient)的絕對值越小；反之，當交通成本高於某臨界值、交通成本越高，都市人口密度變化率(population density gradient)的絕對值越小。這代表當交通成本頗低時，交通成本越低，人口越分散化；當交通成本頗高時，交通成本越高，都市間人口數越一致。(3)交通成本會影響聚集經濟的分佈型態，而聚集經濟分佈型態的改變與次中心的成長之間具有高度的相關性。
    Recent research shows that subcenters are becoming important part of urban structure. The formation of subcenters are theoretically understood based on agglomeration economies, labor-force accessibility, transportation nodes, and negative agglomeration effect of CBD. The purpose of this paper is to investigate how the change of agglomeration economies affects the growth of subcenters; how commuting cost affects urban structure through agglomeration economies. The results show that when commuting cost is less than a critical level, the smaller the commuting cost the less the absolute value of population density gradient. Once the commuting cost is larger then the critical level, the larger the commuting cost the less the absolute value of the population density gradient. Besides, the level of commuting cost will affect the distribution of agglomeration economies. Finally, we find that the growth of subcenters is highly related to the change of agglomeration economies distributions.　
    Relation: 國立政治大學學報,76,159-187
    Data Type: article
    Appears in Collections:[Department of Economics] Periodical Articles

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