EVOLUTION OF URBAN SYSTEMS IN THE PARETO PLANE*

ABSTRACT Distributions of city sizes are usually characterized by their Pareto index. This, however, turns out to be a rather restrictive view, for the Pareto distribution is known to become singular whenever the Pareto index becomes smaller than one, a case which is fairly frequent in empirical distributions. We show that the introduction of finite Pareto distributions in which city sizes are bounded from above solves a number of difficulties encountered by the rank-size rule and by the unbounded Pareto distribution. Combined with the use of finite Pareto distributions, the green-belt model that has been introduced previously is reexamined. It implies definite constraints for the long-run evolution of urban systems; it is in the cases of countries experiencing a process of fast urbanization that these constraints are of greatest significance. The implications of the model are confronted with empirical evidence concerning the evolution of urban systems in major industrialized countries during the nineteenth and twentieth centuries.     

THE QUESTION OF EFFICIENCY IN URBAN BUS TRANSPORTATION*

ABSTRACT. This paper estimates a flexible frontier specification for the production of urban bus transit services in the United States. The results confirm previous findings of relatively unimportant scale economies. However, they also suggest that this regulated industry is subject to substantial technical and allocative inefficiency.     

ANALYZING THE COST OF DEBT FOR SMALL BUSINESS

The available empirical evidence provides mixed views of small businesses' relative bankruptcy risk. The difference between Churchill and Lewis' findings and SBA's and Kirchhoffs' may well lie in the difference in definition of firm “size” used. Risk is not evenly spread; the smallest businesses seem to be less risky than the intermediate size businesses. Yet, Churchill and Lewis' actual loss evidence suggests that small business risk is only marginally greater than for large businesses, the loss rate is still equivalent to less than one half of one percent. The assumptions that lenders will adjust the amount of debt they allow small business clients rather than the interest rate is not rejected by this evidence. In fact, the much higher profitability of the small business department reported by Churchill and Lewis suggests that the bank's loan interest rates are more than high enough to cover loss risk and fixed costs, and borrowers provide profitable deposits. Thus, the logic of my utility theory hypothesis provides a reasonable explanation for the relatively higher debt levels of small firms compared to large firms. But, then the Kirchhoffs' findings cast some doubt on whether small firms actually have higher debt levels. None of these findings justify the 2.75 percent interest rate spread allowed by SBA.     

THE URBAN ENTERPRISE ZONE*

ABSTRACT This paper provides an analytical framework of urban enterprise zones in a context of regional development. The direct and indirect impacts of urban enterprise zones on regional economies such as job creation, urban unemployment, agricultural wage and changes in the regional economic structure are analyzed by incorporating the intermediate goods sector. The study suggests that the establishment of urban enterprise zones is a beneficial and effective policy instrument which can be used in promoting urban renewal and regional economic growth.     

LOCAL TAX BURDENS AND THE SUPPLY OF BUSINESS SITES IN SUBURBAN MUNICIPALITIES*

ABSTRACT. The purpose of this study is to examine the effects of local household tax burdens and other community attributes on the supply of business sites made available by local municipalities. A model of community site supply is tested in which municipalities trade off increased fiscal benefits from business location and reductions in environmental quality that accompany industrial and commercial development. This tradeoff is embodied in municipal zoning decisions. Empirical analysis of industrial and commercial zoning in two rapidly growing suburban counties of the Philadelphia metropolitan area provides considerable support for the tenets of community site supply theory.     

LOCATIONAL FACTORS IN THE DECLINING INDUSTRIAL COMPETITIVE ADVANTAGE OF THE NEW YORK URBAN REGION*

This paper investigates the locational factors that contributed to the decline of the New York urban region's industries during 1972-1975. Based on the static concept of a specialization index, a dynamic comparative advantage index is constructed. A model is then formulated to test the hypothesis that regional competitive advantage (vis-à-vis the nation) is a function of relative disparities in the change of these locational factors. Regression results show that the region's competitive advantage is influenced positively by the differential rate of change in market size, by the differential profit rate before tax, and negatively by the differential rate of change in unit labor cost and in unit energy cost. The differential tax rate does not seem to affect the region's competitive advantage. Nevertheless, a progressive corporate income tax structure tends to neutralize the beneficial effects of the economies of agglomeration and the urban attraction of the region.