Exploring the associations between cooling centre accessibility and marginalization in Montreal,Toronto, and Vancouver,Canada

Cooling centres provide respite, safety, and social support during extreme heat events for populations that do not have the resources to own or operate in-home air conditioning. The objective of this study was to measure the spatial accessibility of cooling centres and analyze the associations between cooling centre access and marginalization in Montreal, Toronto, and Vancouver, Canada. The potential spatial accessibility of cooling centres within a 15-minute walk was measured at the dissemination area scale using the two-step floating catchment area method. A two-stage modelling approach was used to analyze the associations between cooling centre access and marginalization. Approximately 62%, 58%, and 54% of the populations in Montreal, Toronto, and Vancouver had access to at least one cooling centre. In Montreal and Vancouver, high marginalization areas were more likely to have cooling centre access than low marginalization areas. Of the areas with cooling centre access, smaller access scores were observed in areas with high residential instability. Approximately one-fifth of the areas in each city had no cooling centre access and high marginalization, and may be considered for future cooling centres or programs that improve accessibility to existing centres.     

Ceramic Production and Interaction in the Northern Range of Trinidad

Regional syntheses based on data recovered mostly from outside of the Northern Range have characterized the mountainous region in northern Trinidad as a boundary between two distinct interaction spheres during the Early Ceramic Age (ca. AD 350–650/800) (Boomert 2000 Boomert, A. 2000. Trinidad, Tobago and the Lower Orinoco interaction Sphere: An Archaeological/Ethnohistorical Study. Alkmaar: Cairi Publications. [Google Scholar]). Changes occurring on Trinidad, other islands of the southern Lesser Antilles, and the South American mainland resulted in the disintegration of these earlier style zones during the final centuries of the Early Ceramic (Boomert 2000 Boomert, A. 2000. Trinidad, Tobago and the Lower Orinoco interaction Sphere: An Archaeological/Ethnohistorical Study. Alkmaar: Cairi Publications. [Google Scholar], 2010). This period of Late Ceramic cultural realignment was characterized by climate change, the renegotiation of political and social networks, and demographic transformations. We consider newly recovered ceramic evidence from the central Northern Range in order to evaluate the characterization of the region as a boundary and the region's role in broader Caribbean trends. We examine participation in interaction spheres to provide a more nuanced understanding of regional dynamics as they were expressed locally. Ceramic data indicate that occupants of the central Northern Range interpreted regional styles using locally derived materials, thus simultaneously engaging regional traditions and constructing local patterns of resource exploitation.     

南宋川陕战区兵力部署的失衡与吴曦之变

南宋在川陕战区兵力部署中,基于战略防御和节制武将的考虑,形成兴州、金州、兴元府三大屯驻重心。在具体兵力分布上,由于吴氏武将集团的影响,兴州驻军的数量与实力最为强大,呈现出严重的失衡状态。兴州驻军力量过于强大是吴曦据兴州叛变的关键因素。吴曦叛变平定后,南宋对兴州军事力量予以分化,又导致兵力分散和不利于边疆防御的弊端,体现出南宋削弱地方军事力量与加强边疆防御的两难困境。川陕战区兵力部署的演变,蕴涵着南宋加强中央集权的真实内容。     

Digging Deep for Justice: A Radical Re-imagination of the Artisanal Gold Mining Sector in Ghana

Abstract:  This article explores the concept of "contact zones" to counteract misrecognition and exclusion in the artisanal gold mining sector of Ghana. The large majority of the 300,000–500,000 Ghanaian artisanal miners work without an official license, illegally. Due to their encroachment on corporate concession lands, the use of toxic mercury in the gold extraction process, and the social disruption caused by their migratory activities, these miners are often marginalized and criminalized. Yet, devaluation and misrecognition hamper environmental stewardship and participation in political decision-making. Through parity-fostering participatory research, I propose a radical re-imagination of the sector that encourages agency and flourishing among these ostracized men and women diggers.     

Inferring attitudes from behavior

Abstract

The Middle East has long been a conflict zone; the Palestinian-Israeli conflict has been a persistent factor for decades, and there have been wars over natural resources, ideological causes, and national or religious cleavages as well. How does a historian begin to compile a documentary record of such a struggle? At the beginning of my research stay in the Middle East in 2007, I decided to keep a diary about my experiences and assessments in the field. In this article, I recount and reflect about those experiences in order to propose potential solutions to the problem of on-site research in unstable areas. While field research generally requires a particular kind of preparation, and always faces obstacles and challenges, the success of fieldwork under difficult and hostile research settings is dependent on the skills of the researcher, and his or her ability and preparedness for the problems the nature of the research inevitably will bring forward.     

Contact Dynamics of Masonry Block Structures Using Mathematical Programming

A simple variational formulation for contact dynamics is adopted to investigate the dynamic behavior of planar masonry block structures subjected to seismic events. The numerical model is a two-dimensional assemblage of rigid blocks interacting at potential contact points located at the vertices of the interfaces. A no-tension and associative frictional behavior with infinite compressive strength is considered for joints. The dynamic contact problem is formulated as a quadratic programming problem (QP) and an iterative procedure is implemented for time integration. Applications to analytical and numerical case studies are presented for validation. Comparisons with the experimental results of a masonry wall under free rocking motion and of a small scale panel with opening subjected to in-plane loads are also carried out to evaluate the accuracy and the computational efficiency of the formulation adopted.     

Experimental territoriality: Assembling the Kaesong Industrial Complex in North Korea

This paper examines the interactions of sovereignty and political economy that shape North Korea's Kaesong Industrial Complex (KIC)—an economic zone jointly operated by North and South Korea. Drawing on contemporary literatures concerning sovereignty, territoriality, and sites of political economic experimentation in East Asia, we argue that the KIC represents an experimental form of territoriality: one that is particularly volatile due to its unique geopolitical location where interaction among the various actors that compose it periodically shuts down or threatens to suspend the project. This volatility cannot be reduced to the structure of the North Korean regime alone, however. Rather, it must be situated within the continuation of a framework of enmity on the Korean peninsula as well as the ethical and political conundrums raised by the largely capitalist nature of the KIC as a form of inter-Korean economic cooperation.     

Policing (by) the urban brand: defining order in Winnipeg's Exchange District

In this paper, we examine the ways in which the urban brand is policed in an attempt to ensure that the Exchange District business improvement zone in Winnipeg, Manitoba maintains a stable and safe image. In doing so, we pay particular attention to the use of security and beautification services as well as environmental design in the production of perceptions of safety. In addition, we suggest that the brand itself is a source of policing, since it evokes a regulatory ideal or ‘definition of order’ that facilitates coordination of the institutions, auspices and agents engaged in the co-production of the brand and its boundaries.     

Trans-border Exchange between Russia and China: The Case of Blagoveshchensk and Heihe

Two Russian-trained geographers investigate the multiple and largely informal and illicit forms of exchange between two provincial cities of roughly similar size located on opposite banks of the Amur River, namely Blagoveshchensk, in Russia's Far East, and Heihe, in neighboring northeast China. The study is based on interviews and field observations from 2002 to 2009 in Blagoveshchensk, as well as official statistics from the relevant Russian and Chinese provincial governments. Particular attention is focused on the activities and treatment of Chinese guest workers comprising a material component of the labor force in Amur Oblast (e.g., in construction and agriculture), unregistered Chinese entrepreneurs in retailing and catering, and trans-border logging operations of Chinese timber/wood products companies. Also covered are the activities of visiting Russian nationals in Heihe and the extralegal activities of Russian entrepreneurs and bureaucrats. Journal of Economic Literature, Classification Numbers: F20, J61, O17, O18. 5 figures, 1 table, 50 references.