Edgeworth's conjecture with infinitely many commodities: commodity differentiation

Summary. Convergence of the cores of finite economies to the set of Walrasian allocations as the number of agents grows has long been taken as one of the basic tests of perfect competition. The present paper examines this test in the most natural model of commodity differentiation: the commodity space is the space of nonnegative measures, endowed with the topology of weak convergence. In Anderson and Zame [12], we gave counterexamples to core convergence in L ¹, a space in which core convergence holds for replica economies and core equivalence holds for continuum economies; in addition, we gave a core convergence theorem under the assumption that traders' utility functions exhibit uniformly vanishing marginal utility at infinity. In this paper, we provide two core convergence results for the commodity differentiation model. A key technical virtue of this space is that relatively large sets (in particular, closed norm-bounded sets) are compact. This permits us to invoke a version of the Shapley-Folkman Theorem for compact subsets of an infinite-dimensional space. We show that, for sufficiently large economies in which endowments come from a norm bounded set, preferences satisfy an equidesirability condition, and either (i) preferences exhibit uniformly bounded marginal rates of substitution or (ii) endowments come from an order-bounded set, core allocations can be approximately decentralized by prices. Received: July 29, 1996; revised version: January 14, 1997     

Long-term trend and short-run dynamics of the Canadian dollar: an error correction modelling approach

Using quarterly data for 1972–2000, the paper examines the long-term and short-term movements of the US-Canadian exchange rate. It is found that the standard purchasing power parity condition fails to explain movements of the Canadian dollar. The explanatory power of the model increases significantly when resource commodity prices are added to the equation. Short-term movements in the Canadian dollar are influenced by the interest rate differential between Canada and the USA.     

International Pricing with Costly Consumer Arbitrage

Consumer arbitrage affects international pricing in several ways. If all consumers face the same arbitrage costs, a monopolist's profit increases with arbitrage costs, and world welfare declines with them (if output does not rise). If arbitrage costs differ across consumers, a monopolist may sell in a second country even if there is no local demand—it can use the second country to discriminate across consumers in the first country. Again, world welfare typically falls with arbitrage costs. When there is also local demand in the second country, world welfare may be increasing in arbitrage costs, even if output falls.     

Einzelbesprechungen

Ohne Zusammenfassung     

‘All sorts and conditions of men’: The social origins of the founders of the ICAEW

The early organisation of accountants in Scotland during the 1850s and 1860s has excited the intellectual curiosity and research endeavour of a number of students of professionalisation. By contrast, until recently there was a dearth of academic interest in institutional developments in England and Wales during the 1870s and 1880s. Yet, organisations such as the Institute of Chartered Accountants in England and Wales (ICAEW) which emanate from this period soon became the most significant players on the British professional scene and were to exert considerable influence on the development of accountancy institutions and professional ideologies in several locations. Exploiting a variety of genealogical sources this paper seeks to fill a void in the literature by analysing the social origins of the founding members of the principal professional association in England and Wales. It provides evidence of early chartered accountancy as a destination for long distance, upwardly mobile males, both intergenerationally and intragenerationally. The rate of self-recruitment among the founders of the ICAEW is shown to be low. The proportion of founders deriving from the upper and upper-middle classes is revealed to have been markedly less than that of their Scottish counterparts. The paper contributes to understandings of the complex professionalisation of British accountants, the extent of social mobility in Victorian Britain, the pathways to social advance in a class-based society, and illuminates the social complexion of one of the ‘new’ professions which emerged during the nineteenth century.     

Riding the Third Wave Implications of Biotechnology for the Canadian Seed Crop Industry

Biotechnology is causing dramatic changes in the seed industry on a national and global level. Further, the delivery of technology through seed is affecting all aspects of crop production. Coined the Third Wave of Development, it is a drive to meet specific end use traits through biotechnology. In light of this, the industry is seeing increased integration between all those involved in the chain of production. Adapting to this new environment creates significant challenges for the industry, including regulatory, international, handling, and structural.
As the Canadian seed industry changes dramatically to meet the specific needs of end users, there has been an increase in strategic alliances between both handling and seed companies to accommodate identity preserved production. There has also been an increase in mergers and acquisitions, as R&D companies attempt to marry novel trait developments with good germplasm and seed production expertise.
Yet, this is only the beginning as the integration of the seed industry with other aspects of the crop inputs sector applies even more pressure to integrate the agri-food industry right from plant breeding through to end use.     

Federal health care policy and the public-general hospital

Conclusion Although a stringent policy environment adversely affects both private and public hospitals, the market circumstances are worse for public hospitals. Because they are providers of last resort, they do not have as much flexibility as private hospitals in determining the quantity and scope of services they provide.