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[A method for projecting the population according to size of locality. (Application to the case of Mexico's urban population in 1990)].

"In this article, a restricted components method is presented (because sex and age are not taken into account) to project the population classified according to the size of the locality.... The application is presented for urban centers (15,000 or more inhabitants) of Mexico in 1990, utilizing the trend in demographic growth for the 1960-1980 period." Data are from Mexican censuses conducted in 1960, 1970, and 1980. (SUMMARY IN ENG)

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PubMed1996

Preliminary evidence for a theory of the fractal city.

"In this paper, we argue that the geometry of urban residential development is fractal. Both the degree to which space is filled and the rate at which it is filled follow scaling laws which imply invariance of function, and self-similarity of urban form across scale. These characteristics are captured in population density functions based on inverse power laws whose parameters are fractal dimensions. First we outline the relevant elements of the theory in terms of scaling relations and then we introduce two methods for estimating fractal dimension based on varying the size of cities and the scale at which their form is detected. Exact and statistical estimation techniques are applied to each method respectively generating dimensions which measure the extent and the rate of space filling. These methods are then applied to residential development patterns in six industrial cities in the northeastern United States...."

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