Forest management: Are double or mixed rotations preferable to clear cutting?

We study a particular uneven-aged forest stand management pattern, variations of which are often advocated in practice to mitigate the adverse effects of clear cutting. The forest stand under consideration is similar to a Faustmann stand, with the following difference: rather than being single aged, the forest tract contains trees of two age classes so that it is submitted to a form of selective cutting. Each harvest involves all of the older trees and only a fraction of the younger ones; hence the name mixed rotation. Trees left standing at harvest help stimulate natural regeneration and improve various environmental and amenity characteristics of the forest. We model this effect by using a cost function that varies with respect to the harvest rate of younger trees. We derive the properties that this cost function must exhibit in order some form of mixed rotation to be superior to the conventional single rotation à la Faustmann; we also characterize the mixed rotation in terms of duration and the harvest rate of younger trees, and we compare its properties with Faustmann’s rule.     

Markets as communication systems

As the information relative to endowments, costs and preferences is dispersed among many agents, the quality of resource allocation depends on the ability of markets to communicate information inside the economic system. Because information is transferred through negotiation and transaction behaviors, the network of trading relations defines the channels through which it flows. In the present study, we use new computational tools to analyze the performance of two wholesale trade institutions widely used around the world: network trading and marketplace trading. Whilst network trading and marketplace trading disseminate far fewer bits of information than a perfectly transparent benchmark market, they often manage to generate an allocation of resources that is almost as good. In many cases, network trading proves more effective than marketplace trading (contrary to a common preconception). This surprising performance of network trading is linked to a form of indirect arbitrage induced by connections between networks. Implications for market design and public policy making are presented, along with prospects for further research.     

Does the Quality of Institutions Limit the MENA's Integration in the World Economy?

Using a large sample of countries over the 1990s, this paper examines the extent to which institutions’ functioning disables a greater participation of the Middle East and North Africa (MENA) in the world economy. It focuses on the impact on manufactured exports and FDI attractiveness and considers a broad index of political risk as well as indices targeted toward specific aspects of governance (corruption, government effectiveness and the rule of law). The results are robust to different econometric approaches and lend strong support to the hypothesis that the functioning of institutions may disable the participation of MENA countries in the world economy. They suggest that the impact of an improvement in the quality of institutions may result in a sensitive increase of FDI inflows and manufactured exports. That increase is comparable to the one resulting from liberalisation policies. Hence, although institutional reforms can take time, they deserve the necessary efforts given their outcomes as compared to other reforms.     

Proactive behavior and industrial salesforce performance

Proactive behavior has been indirectly linked to effective selling, an assertion underpinned by a logic, which states that in a world of high competition and choice, the passive, reactive seller is unlikely to do as well as his or her more proactive counterpart. Yet, little direct empirical evidence exists to substantiate this link. In this paper, we address this knowledge gap by describing a study that assesses the effect of proactive behavior on the performance of an industrial sales force. The paper explores the issue of salesperson performance and the construct of proactive behavior (or proactiveness). Using the Proactive Personality (PP) Scale to measure proactiveness and the line manager's subjective evaluation to indicate salesperson performance, it was found that a small but significant relationship exists. The results are discussed, with areas for future research delineated and implications for practitioners explored.     

Demographic Shock and Social Security: A Political Economy Perspective

We assume that individual voters differ not only according to age but also productivity. In the steady state, workers with wages in the intermediate range join the retired persons to form a majority and vote for a positive level of social security. When a shock decreases population growth, entrenched interests can constrain majority voting decisions and prevent reforms in the name of entitlements. We show that from a Rawlsian viewpoint it may be desirable to rely on these entitlements to protect the low wage earners of the transition generations. However, when the possibility of fixing a basic pension is introduced, it constitutes a better instrument than entitlements.     

An International Analysis of Earnings, Stock Prices and Bond Yields

Abstract:  This paper assesses the contemporaneous relationship between stock prices, earnings and long-term government bond yields for a large number of countries. The time period of our data spans several decades. In a time series framework our analysis first tests the presence of a long-term contemporaneous relationship between these three variables (the so-called Fed model). Next, we assess if government bond yields play a significant role in the long-run relationship. Our empirical results question the validity of the Fed model in the sense that we show that long-term market movements are mainly driven by the earnings yield and not the differential between bond and earnings yields. As such, our analysis validates the results of Asness (2003) for a much larger collection of countries while using a dynamic time series (cointegration) framework. Finally, we also show that changes in long-term government bond yields have a short-term impact on stock prices.     

Dual VATs and Cross-Border Trade: Two Problems, One Solution?

In recent years, two distinct but related questions have been raised with respect to value-added taxes (VATs). Concern has been expressed over whether it is desirable or even possible for both national and subnational governments in federal countries such as India, Argentina, and Russia to impose VATs. One reason for thinking that such subnational VATs are unlikely to be workable on a destination basis is the problem of cross-border trade. Of course, this same problem also arises within the European Union, where there is no EU VAT. Drawing upon Canadian experience, we argue that not only is it possible to have two-tier or dual VATs on a destination basis in a single country but that the existence of dual VATs may help deal with some of the problems of cross-border trade.     

Quality control mechanisms under capitation payment for medical services

As a result of rising health care costs, many countries, including the United States, have turned to managed care organizations and the use of capitation payment systems. Although this type of system is an effective mechanism for reducing excessive utilization of health care, it may lead to the underprovision of medical services. In this paper propensity to underprovide medical services in a prepayment system as well as the effects of auditing/monitoring on physician behaviour and patient well-being are examined. Conditions are found under which managed care yields more efficient outcomes than traditional fee-for-service care.
Suite à la croissance importante des coûts des soins, plusieurs pays, y compris les Etats Unis, ont commencéà se tourner vers des organisations spécialisées pour gérer la prestation des services et à faire usage de systèmes de rémunération per capita. Même si ce genre de système est un mécanisme efficace pour réduire l'usage excessif des service de santé, il peut entraîner une offre déficiente de services médicaux. Ce mémoire examine la propensitéà fournir moins de services dans un système de pré-paiement. On examine aussi les effets de la surveillance et de la vérification sur le comportement des médecins et sur le bien-être des patients. On met en lumière les conditions qui assurent que les soins fournis dans un tel système donneront de meilleurs résultats que la rémunération à l'acte.     

Rupture or Continuity? Modern and Postmodern Planning in Toronto

The literature on the transition to postmodernism, postfordism and participatory planning stresses the value of the economic and planning process shifts that have occurred in the late 1960s and early 1970s. This paper compares two periods of planning and urban development in Toronto: one running from 1959 to 1962, at the height of modernism, fordism and expert-driven planning, and the other, from 1989 to 1992, set within the postmodern, postfordist and participatory planning era. In line with expectations arising from the literature, the study reveals stark distinctions between the two periods. It documents the breaking up of the modern consensus around the progress ideology into a postmodern constellation of values. As a result, the range of issues debated on the planning scene was much broader over the second period than over the first. Overall, however, results point to a mixture of continuity and change between the two periods and thus diverge from this literature’s strong emphasis on transition. Contrary to expectations, citizen mobilization was pervasive in both periods, although there were major differences in the nature of activism and in the issues that were raised. Over the first period most activism originated from ratepayer organizations dedicated to the protection of single-family-home neighbourhoods from encroachments, whereas the second period featured, along with such associations, advocacy groups championing environmental and social causes. The two periods are also distinguished by different planning implementation capacities. Whereas in the first period, planning had the means to implement its visions, this was no longer the case in the second period. In the late 1980s and early 1990s, planning was thus incapable of aligning urban development with its environmental and social ideals, which meant that, by default, planning practice over the second period proceeded pretty much according to land-use and transportation principles evolved in the early postwar decades. In sum, distinctions between the two periods were far more evident in the discourse than in the implementation sphere. — Les recherches sur la transition vers le postmodernisme, le postfordisme et la planification participative soulignent la valeur des changements qui ont pris place à la fin des années soixante et au début des années soixante-dix. Cet article compare deux périodes de planification et de dévelopment urbain à Toronto: une qui va de 1959 à 1962, durant l’apogée du modernisme, du fordisme et de la planification contrôlée par les experts, et l’autre, de 1989 à 1992, à l’époque du postmodernisme, du postfordisme et de la planification participative. En accord avec les prévisions émanant des recherches, cette étude révèle des distinctions nettes entre les deux périodes. Elle documente le morcellement du consensus moderne autour l’idéologie du progrès et le changement en faveur d’une constellation de valeurs postmodernes. Il s’ensuit que le champ de problèmes discutés en relation avec la planification était beaucoup plus étendu durant la seconde période que durant la première. Dans l’ensemble, cependant, les résultats indiquent un mélange de continuité et de changement entre les deux périodes et divergent donc de la forte emphase sur la transition que l’on trouve dans les recherches. Contairement aux prévisions, la mobilisation des citoyens était omniprésente à Toronto pendant les deux périodes, mais il y avait des différences importantes quant à la nature de l’activisme et dans les problèmes soulevés. Durant la première période, la plus grande part de l’activisme provenait des organisations de contribuables vouées à la protection des quartiers d’habitations contre les empiètements, alors que la seconde période comprenait, en plus de ces organisations, des groupes de soutien aux causes de l’environnement et aux causes sociales. Les deux périodes sont également distinctes en termes de mise en oeuvre. Alors que dans la première période les urbanistes avaient les moyens de mettre leurs idées à exécution, ce n’était plus le cas dans la seconde. Vers la fin des années quatre-vingt et le début des années quatre-vingt-dix, la planification ne pouvait pas intégrer les développements urbains et ses idéaux sociaux et environnementaux. Par défaut, la pratique de la planification durant la seconde période a fonctionnée selon les principes d’utilisation des terrains et du transport développés dans les premières décennies de l’après-guerre. En somme, les différences entre les deux périodes sont beaucoup plus visibles au niveau du discours qu’au niveau de l’application.