REGIONAL AIR CARRIERS IN CANADA: NETWORK EVOLUTION AND GOVERNMENT POLICY

Regional air carriers have grown from localized, smallscale operations in the early 1960s to national operations in the 1980s. Their expansion results from an interplay of technology, route networks, and regulation policy. Government policy on regulation first assigned regions in the 1960s and then, in the 1970s, promoted entry to trunk transcontinental routes. The initial concept of the air transport region must therefore be revised, as the role of the regional carriers now approaches that of the trunk carriers. Regulation remains a key determinant of market share, and deregulation could accelerate the convergence of regional and trunk carriers.
Dans les années soixantes, les lignes aériennes régionales n'entreprenaient que des activités locales, à petite échelle. Présentement, ces měmes lignes fonctionnent, de plus en plus, comme sociétes nationales. L'élargissement de ces lignes provient de l'interaction de plusieurs facteurs, en particulier la technologie, les réseaux aériens et la politique du gouvernement. Cette dernière a permis aux lignes régionales de passer, en 1970, d'un rle local à une présence nationale. Par conséquent, le concept original d'une région aérienne doit ětre revisé, puisque le rle de la ligne régionale s'approche de plus en plus de celui de la société nationale. La part du marché de chaque type de société se détermine par la réglementation imposée par le gouvernement, et la déréglementation pourrait accelerer la convergence des rles des sociétés régionales et nationales.     

The Spatial Hierarchical Principle in the Evolution of Modern Local Government in Scotland

During the 7970s the structure of local government in Scotland was transformed from a traditional system based on counties and burghs to a nested spatial hierarchy of regions and districts. This reform represents the last stage of an evolutionary process, uniting the formerly separate rural and urban hierarchies of local government and administration. The city region was taken to be the guiding principle for reform, and the new regions were identified mainly on the basis of town hinterlands. Throughout all reforms there has been a tendency to concentrate local government functions at higher levels of authority.
Pendant les années 1970 la structure du gouvernement urbain et rural en Ecosse fut transformeé d'un système traditionnel de comptés et bourgs en une hiérarchie spatiale de régions et de districts. Une réforme récente qui unifie pour la première fois les échelons ruraux et urbains des administrations et des gouvernements locaux, représente la phase ultime d'une évolution vers cette hiérarchie. Cette réforme a été guidée par l'utilisation de la zone d'influence urbaine comme unité de base, et les nouvelles régions ont été identifiées surtout sur la base des aires tributaires des villes. Au cours des réformes il y avait une tendance è concentrer les fonctions du gouvernement local è des niveaux supérieurs d'autorité.     

SPATIAL COMPETITION WITH LOCATION-DEPENDENT COSTS*

This paper investigates the behavior of spatially-competitive firms whose costs depend on their locations. Necessary and sufficient conditions for optimum locations are derived. Comparative-statistics analysis of the equilibrium shows that the responses of firms to changes in input and output transport rates depend on the properties of consumer demand curves or are ambiguous in sign.     

Book reviews

Derek McDougall, Harold D. Lasswell and the Study of International Relations. University Press of America, Lanham, USA, 1984, pp.370. $16.50.

John W. Burton, Global Conflict: The Domestic Sources of International Crisis. Wheatsheaf Books, UK, 1984, pp.194. $54.00.

K.J. Holsti, The Dividing Discipline: Hegemony and Diversity in International Theory. Allen and Unwin, Boston and Sydney, 1985. pp.165. $39.95.

Hedley Bull (ed.), Intervention in World Politics. Clarendon Press, Oxford, 1984, pp. viii + 198. $31.00.

Hedley Bull, Justice in International Relations. 1983–84 Hagey Lectures, University of Waterloo, 1984, pp. iii + 36. No price given. (Available from University Publications Distribution Service, Dana Porter Arts Library, University of Waterloo, Waterloo, Ontario N2L3G1, Canada.)

Benedict Anderson, Imagined Communities: Reflections on the Origin and Spread of Nationalism. Verso Editions and NLB, London, 1983, pp. 160. £15.00.

Chalmers Johnson, Revolutionary Change. Second edition. Longman, London, 1983, pp.xii + 217. $13.85.

Peter Calvert, Politics, Power and Revolution. An Introduction to Comparative Politics. Wheatsheaf Books, Brighton, 1983, pp.208. £5.95.

John Walton, Reluctant Rebels. Comparative Studies of Revolution and Underdevelopment. Columbia University Press, New York, 1984, pp.xii + 230 $US36.00 (cloth), $US10.00 (paper).

E. A. Tiryakian and R. Rogowski (eds), New Nationalisms of the Developed West. Toward Explanation. Allen and Unwin, Boston, 1985, pp.xii + 394. $69.00.

Peter H. Merkl and Ninian Smart (eds), Religion and Politics in the Modern World. New York University Press, New York, 1985, pp.276. No price given.

Richard Lowenthal, Social Change and Cultural Crisis. Columbia University Press, New York, 1984, pp.viii + 252. $US29.50.

Dietrich Fischer, Preventing War in the Nuclear Age. Rowman and Allanheld, Totowa, N.J./Croom Helm, London, 1984, pp. x + 236. $27.95.

F. Dyson, Weapons and Hope Harper and Row, New York, 1984, pp.340. $24.95.

John Langmore and David Peetz (eds), Wealth, Poverty and Survival. Australia in the World. George Allen and Unwin, Sydney, in association with the Australian Labor Party, 1983, pp. 225.     

OPTIMAL REGIONAL GROWTH MODELS: MULTIPLE OBJECTIVES, SINGULAR CONTROLS, AND SUFFICIENCY CONDITIONS

ABSTRACT We develop a generalized Harrod-Domar type of model for optimal regional growth which allows determination of the optimal allocation of regional public investments and which considers multiple growth objectives, as well as both normal and singular fiscal instruments. This general model is shown to include most of the previous optimal regional growth models as special cases. Necessary conditions for some special cases of the general model are analyzed in detail, and decision rules associated with derived optimal regional growth policies are articulated. These special cases verify that singular controls do exist in certain instances, and that they must be considered for the complete specification of optimal regional growth policies; this is significant because singular controls have not been previously analyzed in the literature. We conclude the paper with a discussion of sufficiency conditions for optimal regional growth models which is more general than that given by previous authors.