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71.
Oxygen is a key parameter in the degradation of archaeological material, but little is known of its dynamics in situ. In this study, 10 optical oxygen sensors placed in a 2 m deep test pit in the cultural deposits at Bryggen in Bergen have monitored oxygen concentrations every half hour for more than a year. It is shown that there is a significant spatial and temporal variation in the oxygen concentration, which is correlated to measured soil characteristics, precipitation, soil water content and degradation of organic material. In these deposits oxygen typically occurs when the air content of the soil exceeds 10–15% vol, while oxygen dissolved in infiltrating rainwater is of less importance for the supply of oxygen in the unsaturated zone. 相似文献
72.
Kristin Reynolds 《对极》2015,47(1):240-259
Many studies have documented the benefits of urban agriculture, including increased food access, job creation, educational opportunities, and green space. A focus on its social benefits has fed an association of urban agriculture with social justice, yet there is a distinction between alleviating symptoms of injustice (such as disparate access to food or environmental amenities) and disrupting structures that underlie them. Despite its positive impacts, urban agriculture systems may reinforce inequities that practitioners and supporters aim to address. This paper reports findings from a 2‐year study of urban agriculture in New York City, which found race‐ and class‐based disparities among practitioners citywide. Using the lens of critical race theory, it argues that a failure to examine urban agriculture's role in either supporting or dismantling unjust structures may perpetuate an inequitable system. The paper concludes with recommendations for urban agriculture supporters and scholars to help advance social justice at structural levels. 相似文献
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74.
Enclosed, controlled environments, stretching from sites of luxury consumption to urban food production, are proliferating in cities around the world, utilising increasingly advanced techniques for (re)creating and optimising microclimatic conditions for different purposes. However, the role of automated control systems—to filter, reprocess and reassemble atmospheric and metabolic flows with growing precision—remains under-researched. In this article, we explore the phenomenon of automated environmental control at three sites in the UK city of Sheffield: a botanical glasshouse, a luxury hotel and a university plant growth research lab. In doing so, we first show how controlled environments are constituted through specific relations between the inside and outside, which are embedded in inherently political urban contexts and processes. Second, we identify the technical and ecological tensions and limits of indoor environmental control at each site which limit the scope of automation, and the considerable amount of hidden labour and energy required to maintain and restabilise desired conditions. Drawing on these more established examples of ecological interiorisation in a key moment of transition, we raise urgent questions for critical urban and environmental geographers about the possible futures of controlled environments, their practical or selective scalability, and who and what will be left “outside”, when they are emerging as a strategic form of urban adaptation and immunisation in the face of converging ecological pressures. 相似文献
75.
Daniela Kraemer 《Oceania; a journal devoted to the study of the native peoples of Australia, New Guinea, and the Islands of the Pacific》2020,90(1):40-54
A contentious issue for Pacific Islanders, as well as researchers of the Pacific Islands, is ni-Vanuatu notions of ‘belonging’ to urban centres. Previous research in Vanuatu has shown that despite generations of people born and raised in Port Vila, the nation's capital, the urban centre is not generally perceived as a ‘place’ to which urban migrants can say they are from. For many, exclaiming that one is ‘from’ town is tantamount to admitting one has ‘no place’. This paper, based on fieldwork among a group of urban young men in Freswota, a residential community of Port Vila, argues that in contrast to this, Freswota young men are generating a new locative identity. Their urban community rather than their parents' home island places is emerging as their primary location of belonging and the source of their sense of self, personhood and social identification. As such, these young men are the urban autochthones of the country. 相似文献
76.
This article explores the social and material repercussions of middle class aspirations in a system that is still infused by socialist aesthetics in Maputo, Mozambique. We argue the activation of “middle classness” reproduces ingrained inequalities and boundaries. This is demonstrated through two ethnographic case studies of urban housing, long central to imaginaries of prosperity. First, fearing downward mobility, members of the upper middle class seek to embody a liberal ideology of “autonomy”, while simultaneously being dependent on state structures. Second, members of the lower middle class attempt to create enclaves to experiment with forms of privatisation normally only accessible to a privileged elite. Through this examination of the ways in which a spectrum of privileged urbanites attempts to secure their position in the face of a precarious future, the article outlines middle classness under contemporary capitalist conditions and how this is shaped by the legacies of the past. 相似文献
77.
民俗学是随着现代性的全球扩张而发展起来的一门高度国际性的关于民族文化传统的学科,它在方法上采取集体主义,在理论上假设民族在民俗上的同质性。在现代性走向巅峰的时候,同质性人群和民俗传统的快速消逝带来民俗学的危机。面对危机,从日常生活来界定民俗的思潮兴起,却并不能解除危机。在人口流动、文化杂糅的世界社会,个人与小群体必须与他人协商安排日常生活的细节,这种世界社会的民俗协商正在成为广泛的事实。能够应对这种趋势的民俗学将会获得发展的生命力,这有赖于从业者带来理论与方法的创新。 相似文献
78.
Luigi Patruno 《Journal of Latin American Cultural Studies (Travesia)》2020,29(1):63-84
This article examines the under-studied film productions known in Peronist Argentina as “docudramas”. Placing documentary elements within a fictional plot, docudramas marked a significant change in the state propaganda machine and were used as a new vehicle to influence social habits. I focus particularly on Soñemos [Let’s Dream], a short film directed in 1951 by Luis César Amadori to showcase urban reforms. Through an analysis of Amadori’s docudrama in regard to its representation of the Children’s City built by the Eva Perón Foundation, I discuss relationships between entertainment, the constitution of a political hegemony, and modernisation. With film techniques such as the dissolve, Soñemos depicts the Children’s City as an enterprise capable of delivering material happiness and amplifies the narrative of a fairy tale come true promised by Evita’s social service programmes. Ultimately, the docudrama affirms the central role played by the state in the definition of the “right to a home” – from supportive benefactor to constitutive replacement. 相似文献
79.
80.
ABSTRACTExisting tourism scholarship on place meanings seems to retain an underlying assumption of a contradiction between tourist places and the mundane world. In contrast, this paper contends that the production of the meanings of tourist places is also closely related to everyday life. To make its case, it interrogates the creation of meanings of two scenic sites of Tianya Haijiao and Nanshan in Sanya, a famous coastal destination in southern China. Although both scenic sites have been recently developed, their significance stems from historical and cultural meanings in traditional Chinese culture, which are frequently communicated in people's daily conversations and practices. Besides, the meanings of the tourist sites are neither fixed by legitimate discourses nor dominated by tourism publicity; they are continuously shaped by wider socio-spatial events in mundane societies and re-interpreted through tourism mobilities in accordance with tourists’ everyday concerns. This paper echoes the ‘new mobilities turn’ in tourism studies and contributes to the discussions of the mundaneness of tourist places. 相似文献