Meteorological influences on the spatial and temporal variability of NO2 in Toronto and Hamilton

The spatial and temporal variability of nitrogen dioxide (NO₂) concentrations and their relationships with meteorology was evaluated in the Toronto–Hamilton urban airshed. NO₂ concentrations were highest in the early morning and late evening. Mean concentrations were highest in winter, although individual one-hour NO₂ concentrations were found to be highest in summer. Wind direction was the strongest control on hourly NO₂ concentration, and temperature and wind speed also had an effect. Our analysis of NO₂ concentration variation by wind direction showed that areas downwind of major highways, urban centres and industry were exposed to higher pollutant concentrations. Seasonal patterns of NO₂ concentration displayed significant spatial heterogeneity, in particular, in Toronto. Onshore winds sheltered coastal inhabitants from the full extent of NO₂ exposure they would otherwise experience. Seasonal variations in meteorology and emissions mean that the degree of spatial variability in NO₂ concentrations changes from season to season. This study will help to improve existing land-use regression-based NO₂ prediction models by incorporating meteorological controls on NO₂ distributions for health effect studies.     

Vulnerability to Bushfire Risk at Melbourne's Urban Fringe: The Failure of Regulatory Land Use Planning

The 7 February 2009 bushfires in the peri‐urban region to the north of metropolitan Melbourne heralded what many have called an entirely new epoch in terms of weather‐related disasters in Australia. A total of 173 people and 2000 properties were destroyed and, as with the 1939 fires in Victoria, a Royal Commission was subsequently instituted to inquire into the causes and responses to the fire. The Royal Commission has heard much evidence about alleged failings of fire response, communication and administration. It also considered land use planning issues and the associated regulatory framework. Using the Shire of Murrindindi as a case study, this paper argues that the location of population growth, and associated regulatory failure, are contributory, yet under‐researched, factors associated with life and property losses. The adoption of more robust planning tools which incorporate climate change considerations, we argue, is essential to anticipate and minimise the impacts of disastrous natural events such as bushfires. In the latter part of the paper, attention is drawn to a recent Victorian Civil and Administrative Tribunal decision which is groundbreaking in its use of the precautionary principle to prevent dwelling construction in an ‘inappropriate’ location as well as to some major inconsistencies between planning for flood and bushfire threats.     

‘Ending the hegemonic presumption’? Recent writings on US–Cuban relations*

For over fifty years relations between the United States and Cuba have been antagonistic, with each side blaming the other for the continuing impasse. This Caribbean Cold War has seen an unsuccessful armed invasion of Cuba (popularly known as the Bay of Pigs invasion), the threat of nuclear war between the US and the USSR (the ‘Cuban missile crisis’), and an intensifying series of measures by the US government to reverse the Cuban social and political revolution of the 1960s. Since the early nineteenth century Washington has sought to control Cuba; and the US conditions for relaxing its pressure on present‐day Cuba continue this tradition, itself part of a broader ideology (often short‐handed as the Monroe Doctrine) which sees the western hemisphere as America's legitimate and exclusive ‘sphere of interest’. This article examines a number of recent works dealing both with the US–Cuban relationship, placing this relationship in historical and geopolitical contexts, and with the impact on Cuban society of the economic crisis of the 1990s caused by the collapse of the Soviet Union.     

Uncommon Ground: Holism and the Future of Anthropology

Anthropology has long been a contested field with roots in both scientific and humanistic discourse. The “four-field” approach in American anthropology has been used by some as a means of suppressing conflict and enforcing a false sense of unity. While critiques of the four-field approach are warranted, in fact holism represents anthropology's greatest strength. Anthropology gains a competitive advantage over other disciplines in its ability to combine biological and cultural approaches. Moreover, the four-field model, while historically contingent, is well suited to the institutional and political realities of the American academy, especially the public research university.     

Mobile Peoples: Pastoralists and Herders at the Beginning of the 21st Century

Bruce Trigger's and Adam Smith's comparative studies of state-level societies provide new theoretical approaches and are important components in a resurgence of explicit comparative analysis of early states by archaeologists. Trigger presents a massive systematic comparison of seven ancient states on an unusually large number of themes, whereas Smith carries out more intensive comparisons of a smaller sample on more limited themes. These well-written works make significant contributions to a number of areas, including empirical analysis, theory, and comparative methods.     

MODELLING OF STRUCTURAL ACCELERATIONS AND APPLICATION TO CONTROLLER DESIGN

In this paper a method for the identification of simplified linear models for building structures is applied to the case when acceleration, rather than displacement, is measured. A frame from benchmark structural controller studies is simulated, and from the input-output data of these simulations, simplified models for the acceleration response of the frame are obtained that have far fewer degrees of freedom. One of these simplified models is used to design a controller, which is tested using an evaluation model from the benchmark controller studies and found to be effective.     

THE GEOGRAPHIC IMPLICATIONS OF SCHOOL BOARD REFORM IN QUEBEC

This paper is based on a recent decision of the Supreme Court of Canada that will allow the Province of Quebec to restructure the system of education, from one based on religious affiliation to one based on language of instruction. The paper sets forth a number of geographic implications of such a reform, including the historic, demographic, linguistic, political, and territorial aspects of the Education Act of Quebec, known as Bill 107. While the change to linguistic-based boards is applauded, there is no clear understanding of what the new map of school board territories will look like, yet the implications of this decision are far-reaching.
Cet article est basé sur une récente décision prise par la Cour suprême du Canada qui permettra au Gouvernement du Québec de restructurer le système d'éducation, c'est-à-dire de passer d'un système fondé^- sur l'appartenance religieuse à un système fondé sur la langue d'enseignement. L'article démontre quelques une des répercussions géographiques d'une telle réforme, en plus des aspects historiques, démographiques, linguistiques, politiques et territoriaux de la Loi sur l'instruction publique du Québec ou Loi 107. Même si la mise sur pied de commissions administratives à caractère linguistique est approuvée, l'élaboration de la nouvelle carte des territoires desservis par chacune des commissions scolaires demeure ambigue, mais le retentissement de cette décision est d'une portée considérable.