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.     

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.     

AMENITIES VERSUS LABOR MARKET OPPORTUNITIES: CHOOSING THE OPTIMAL DISTANCE TO MOVE*

ABSTRACT. A recent debate in the regional economics literature has focused attention on the motivation behind an individual's decision to migrate. Human-capital migration models emphasize labor market disequilibria whereas alternative (hedonic) migration models stress households’altered demand for nontraded goods. In this paper, we test the relative importance of these two possible motivations for moving between metropolitan areas. We use an intercity hedonic model to decompose wages into equilibrium and disequilibrium components. We then compare the separate influences of amenities and the disequilibrium component of wages on the distance moved between two metropolitan areas. Our findings indicate that both economic factors and amenity differentials are significant factors in explaining regional migration.     

THE MARKET VALUE OF ENVIRONMENTAL IMPROVEMENTS IN ALTERNATIVE FISCAL REGIMES*

ABSTRACT Land price differentials have long been used as a proxy for the value of environmental improvements in cost/benefit analysis. Both the empirical and theoretical literatures have largely ignored two important facts, however: Taxes financing local improvements are often distortionary, and amenities which influence property values in turn impact the fiscal budget, and hence the tax rate and final economic burden. Put another way, the economic cost of an improvement is endogenous to both the amenity level and the revenue structure. Extending the story in this direction for a system of open or closed spatial cities, the paper finds land rent measures to be a biased measure of the willingness to pay for amenities financed by either head taxes (benefit taxes), property taxes (excise taxes), or highway tolls (user fees). These results are used to correct the conventional specification of empirical property value regression models, which traditionally account for neither tax revenue effects nor the excess burden of distortionary taxation.     

MEASURING THE INEQUITY OF URBAN PUBLIC SERVICES METHODOLOGICAL DISCUSSION WITH APPLICATIONS*

This article attempts to extend the analysis of urban service delivery beyond equality of units of service input to measurement of the equity of both inputs and outputs (impact). The author develops an original technique for measuring and indexing service equity. It is applied to police services in Tuscaloosa, Alabama. The findings are generally consistent with other recent research around the nation in that only modest inequities in service inputs and outputs are found and little evidence of systematic discrimination toward the poor and racial minorities is found.     

要让照相机物尽其用体现价值

由于照相机拥有者的兴趣和爱好不同,它们的用途和价值的体现亦不尽相同,有的把它当玩具,有的把它工具,还有的把它当成收藏品。如果您也拥有照相机,不管把它当成什么,我建议您一定要让它物尽其用,体现价值!     

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.     

SMALL BUSINESS VIABILITY IN THE URBAN GHETTO*

ABSTRACT Within the minority communities of large SMSAs, neither the black-owned business nor the small nonminority enterprises are flourishing. Facing limited access to financial capital as well as constrained markets, the ghetto firms that do persist are typically quite small in terms of sales and employment. Among black establishments, the least educated entrepreneurs are the ones who are most likely to remain in business. Unless greater financial capital is forthcoming and better educated owners are induced to remain in business, the business community that is located in minority neighborhoods of large urban areas may be destined to stagnate.     

GENERAL EQUILIBRIUM ANALYSIS OF URBAN SPATIAL STRUCTURE. THE PORT-CITY MODEL RECONSIDERED*

In this paper, I consider a general equilibrium urban spatial structure in the setting of a port city by adopting Cobb-Douglas type functional forms for production and utility functions. Unlike previous port-city models, this one can generate four land-use patterns, that is, (1) monocentric, (2) completely integrated, (3) partially integrated (with integration at the center), and (4) partially integrated (with integration at the urban fringe) land-use patterns, and the last pattern suggests a new explanation of suburbanization of employment. The existence and uniqueness of each land-use pattern is proven in a simple constructive way.     

INCOMES,TRADE, AND THE BALANCE OF PAYMENTS WITHIN AN URBAN SYSTEM*

ABSTRACT Attention is initially focused on the principal characteristics of a hierarchical urban system. The structure of trade flows among the various levels of the hierarchy is outlined, and consideration is then given to nontrade flows, these comprising government transfers and capital movements, as well as the associated property-payment flows. An equilibrium model is presented which is concerned with income at each level of the hierarchy. The balance-of-payments implications of the model are explored, and there is a discussion of the manner in which a trade imbalance at a particular level can be sustained in equilibrium.