By G.A. van der Knapp
The research of the evolution of an city method increases a couple of useful questions, as to the operational definition of the elements of the procedure in addition to to the incorporation of the issue time within the research. during this bankruptcy the fo cuss is at the city centres, the nodes of the city process. one of many first seasoned blems to be solved now's the definition of any such node. it's been argued above that inhabitants measurement can be utilized as an approximation of the complexity of the spatial monetary constitution of a sector. The acceptation of this suggestion makes it attainable to check the city approach as a inhabitants approach. The research of the inhabitants approach over the learn interval can be pursued from this angle. The learn interval, 1840-1970, covers thoroughly the industrialization and urbanization section which happened throughout the business revolution. Over this era the spatial organizational constitution of society developed from a rural-commercial to wards a latest urban-industrial kingdom. one of many significant occasions during this interval of swap is the spatial redistribution of the inhabitants and the inhabitants progress. This method could be tested less than at 3 degrees of aggregation: (I) the popu lation distribution as one frequency distribution, (2) the inhabitants distribution dis aggregated right into a n~ber of dimension sessions, and (3) the person towns which make up the inhabitants distribution.
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Additional info for Population Growth and Urban Systems Development: A Case Study
E. amongst places just below the highest order centre and with the centre itself 58 •• In fig. 3 these linkages are incorporated and they express the functional ties related to the operation of tertiary and higher order administrative functions, which are becoming increasingly important in post-industrial societies. Though, it must be noted that Pred 59 • also observed this type of interaction on the basis of analysis of innovation paths in the preindustrial period in the United States. He concludes that "the locational pattern of inventive activity for any pre-electronic year suggests that, at least in the early stages of the diffusion processes, spread [of information] frequently occurred bletween large cities and from smaller to larger places".
Ince the 19th century, the difference remains striking, especially if one takes the difference in size into account as well. The observation of a diminishing density gradient through time is supported by a number of other studies ll •• This change can be associated with a shift in transportation technology leading towards a rapid, flexible and multi-mode transportation system and this has created possibilities for a more dispersed spatial pattern. The degree of nucleation of the built-up area might be used as a supplementary criterion in this respect and will sometimes change the picture considerably.
The study of those variations will reveal whether they have a general or only a specific effect upon the structure of the interurban linkages. Systems behaviour over time The second main theme of this study is to incorporate explicitly the factor time in the analysis. The time span is such, viz. it encompasses fully - 24 - INTRODUCTION AND FRAMEWORK OF ANALYSIS the industrial revolution, that structural changes in the system have occurred from a sectoral point of view. The behaviour of the urban system during this period thus can be studied on the basis of a number of questions (1) What is the spatial stability of the system with respect to the changes in the organisation of economic activities?