La représentation de l’espace public par la photographie : Une étude de cas dans la région de Montréal (Québec,Canada)

Beyond the material forms that constitute public space, it is subject to representations or images that shape the types of use, forms of appropriation, and general perception that people have of it. Following a centre‐periphery gradient that allows us to compare three zones of the Montreal region (pericentral, periurban, and the northern ring), we analyzed photographs available within cyberspace (from different municipalities and boroughs, local newspapers, and social media) to draw out representations of public space. What can photographs available online tell us about how space is perceived? We have established a typology of images of public space (idyllic nature, urban scene, festive space, empty space, family portrait) that are representative of the overall corpus studied. We have compared these results with a correspondence analysis to clarify the structure of interaction between the variables. The analysis demonstrates that the representations are more differentiated between neighbourhoods than between regions, and that while newspapers and municipalities represent more themes of sociability and family life, social media shows more empty spaces, whether they be monumental spaces, or spaces of daily life.     

Variabilité et fréquence des cycles de gel‐dégel dans la région de Québec, 1977–2006

Freeze‐thaw cycles are most common at the beginning or near the end of the winter season. These cycles have various effects on the ecosystems of Eastern Canada, affecting both biotic and abiotic components of temperate cold environments. Using air temperature minima and maxima from four meteorological stations close to Québec City, we determined the frequency of daily freeze‐thaw cycles for the last 30 years. The results show no significant increase in the number of freeze‐thaw cycles despite a small increase in air temperature. Polynomial curves describing the relationship between mean air temperatures and the number of freeze‐thaw cycles were calculated. Based on these equations and anticipating a climate change scenario, we projected future freeze‐thaw cycles. Assuming a 5 °C increase in mean air temperatures by 2100, we estimated that the number of days with a freeze‐thaw cycle could increase by approximately 20 days per winter. The increase in the number of such cycles will be concentrated during the coldest months of the winter (January and February).     

Une histoire de résidus : à propos des facteurs généraux et locaux de croissance régionale au Canada,de 1971 à 2001

Starting from an econometric model of local employment growth, applied to Canada (1971–2001), residuals—relative to model predictions—are analyzed over time and over space, in turn allowing us to draw a distinction between general explanatory variables and factors of a more local, cyclical or accidental nature. The model's explanatory power grows over time, founded on variables such as urban size, market access and industrial structure, allowing us to conclude that local employment growth in Canada follows an increasingly geographically predictable pattern. However, an examination of the residuals reveals more localized processes. Growth volatility is most manifest in Alberta and British Columbia, home to the most erratic local economies. Emerging patterns are visible in the last period, most notably the underperformance of Northern Ontario and of non‐metropolitan communities between Windsor and Québec City, lying along the Great Lakes and the Saint Lawrence. The over‐performance—compared to model predictions — of small and mid‐sized towns in south‐eastern Québec can, on the other hand, be interpreted as a sign of truly local social processes, generally associated with a particularly dynamic local entrepreneurial class.     

L’émergence de la grappe industrielle de l'intelligence artificielle (IA) à Montréal

The paper analyses the emergence of the Artificial Intelligence (AI) cluster in Montreal and investigates two questions: (1) What are the different theoretical interpretations related to the emergence of industrial cluster? And (2) What are the factors underlying the emergence of the AI cluster in Montreal and to what extent have local and global factors been decisive in this respect? The AI cluster emerges through a process that brings into play the interaction between the local initial conditions and the birth of a new industry. Moreover, it also involves an interaction between the local and the global, which is supported by interactions with foreign actors located in different parts of the world.     

Essai de typologie des centres de santé et de services sociaux au Québec

Given the importance of contextual factors—physical, social and institutional environments—for understanding health landscapes, this article examines the situation in the province of Québec and suggests a spatial typology at the scale of the health and social services centres (CSSS). These CSSS provide services for 95 areas which are the finest territorial delineation in terms of health policies since a reform instituted in 2003. While delivery of primary health and social services is defined at this local scale, overall health policy is decided at the provincial scale. The challenge for stakeholders is to supplement their local knowledge with that of the broader context. In this article, we use principal components analysis and hierarchical cluster analysis to identify eight profiles of CSSS. The final results of the cluster analysis demonstrate that two‐thirds of the health and social services centres correspond with two marginally differentiated profiles and the remaining third shows specificities that are highly spatially anchored.     

Chihr de l’encens (Yémen)

Frankincense burners found in al‐Shihr’s excavations in Yemen, a frankincense harbour during the Islamic period, represent a rare corpus of this type, which is an indication of both specific use and goods from South Arabia. Although associated with the pre‐Islamic South Arabian kingdoms, the frankincense burner evolved throughout the Islamic period. This is proved by the long chronological sequence of the al‐Shihr site (780–1996). Texts quoting the presence of frankincense, its use and its trade in al‐Shihr are cited in this article to support the reputation of this harbour‐town, which is part of the maritime trade networks of medieval Islam. The aim of this article is to create a renewal of interest in future archaeological research about this object, which is so often neglected in spite of its importance as a testimony of the customs and exchanges that are deeply rooted in Arabian civilisation.