Wang, Qifan with Jin Yin, "Primary Factors Dominating the Development & Changes of a Metropolis", 1992
City grew, stagnated and then declined in the past two centuries. This is a general pattern in history in our world. Clearly, there must have been some powerful factors at work. This paper tries to make an explanation of such phenomena. Primary forces behind economies of agglomeration and urbanization and behind diseconomies of agglomeration are explained and revealed. Furthermore, in order to avoid such passage, some principles and ways are explored by system dynamic theory and modeling.The development pattern of a metropolis is closely related to its inner dynamic structure. Policymakers should be well informed and adjust the structures accordingly.Developing new zones adjacent to a metropolis is an effective way to pump the new life into the city. Meanwhile, the coordination and equilibrium between the new and old areas should be appropriately arranged and incorporated.The paper makes a study of the macro relationship among the flows of population, manpower, raw materials, funds and information between two zones and the impact of transportation problem on the whole city.Taking an example of Shanghai, a megalopolis, a series of policies for rebuilding up the functions of the city are suggested.
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