排序方式: 共有120条查询结果,搜索用时 15 毫秒
61.
João Pedro dos Santos Laranjeira Helena Cruz Ana Paula Ferreira Pinto Carlos Pina dos Santos Joana Filipa Pereira 《International Journal of Architectural Heritage》2015,9(7):866-882
Fire safety is an important issue of building safety, especially when the building’s fire load contents enhance the risks of fire deflagration. When existing timber structures are involved, the most usual way to improve its reaction to fire is to treat wood with fire retardants. This study focuses on the surface protection of existing timber roof structures against fire, through the use of fire retardant (FR) treatments applied on site. An experimental investigation was carried out to study the effect of FR treatments on timber reaction to fire, with a special emphasis on timber members with biological deterioration and previously treated with preservative products. The behaviour and effectiveness of intumescent and non-intumescent treatments was also investigated. The study showed that the application of FR treatments improved the reaction to fire of timber, even in the presence of previous preservative treatments. However, the choice of the specific FR treatment should take into account the substrate conditions. In addition, test results suggest that protection systems involving multi layers (intumescent and non-intumescent) with different functioning modes each are likely to have a good global performance on the protection of timber elements against fire. 相似文献
62.
63.
Ana María Presta 《Colonial Latin American Review》2017,26(2):255-257
64.
Emancipatory or Neoliberal Food Politics? Exploring the “Politics of Collectivity” of Buying Groups in the Search for Egalitarian Food Democracies 下载免费PDF全文
Ana Moragues‐Faus 《对极》2017,49(2):455-476
In the context of apolitical tendencies in food studies, this paper explores how alternative food networks can contribute to developing emancipatory food politics rather than constitute a tool to reproduce neoliberal subjectivities. For this purpose, I contend that the post‐political literature offers a useful approach to examining the concept of food politics by developing a more robust theoretical framework, permitting the establishment of linkages with broader contemporary processes of social change. The analysis of an action‐research process with buying groups in Spain is used to examine the “politics of collectivity” at play, that is, how these initiatives institutionalise “the political”. Specifically I explore the motivations mobilised to construct place‐based ethical repertoires and unveil how these groups govern the relationality of consumption practices in the pursuit of broader processes of change. I conclude by discussing the contribution of these initiatives to building egalitarian food democracies. 相似文献
65.
Are All Policy Decisions Equal? Explaining the Variation in Media Coverage of the UK Budget 下载免费PDF全文
A country's budget is one of the most important public policy instruments, as it establishes the government's policy priorities and has the potential to determine winners and losers. The budget, however, is a mixture of different components and these get varying degrees of attention in the media. Drawing on sociology of news research, this paper seeks to explain this heterogeneous coverage of a budget's policy decisions. To do so, it uses a unique data set of over 5,000 articles of press coverage of six UK budgets (2008–2012). These articles are coded for the presence/absence of each of the budget's policy decision, via automated content analysis. On the basis of a multivariate negative binomial model, we find that the salience of a policy decision in the coverage is determined by its cost, whether it is negative (i.e., tax hikes and spending cuts) or positive, the income group that is the most affected by it, and the level of attention given to it by the government. 相似文献
66.
67.
Carmen Bentué-Martínez Marcos Rodrigues José María Llorente González Antonio Sebastián Ariño Marcos Zuil Martínez María Zúñiga-Antón 《Geographical analysis》2024,56(2):265-283
The World Health Organization endorses the study of diseases from the perspective of the Determinants of Health (DH), that is, the circumstances in which people are born and raised, the environment in which they grow up and age and their lifestyle. The aim of this study is to analyze the spatial behavior of the prevalence of asthma in Aragon, a Mediterranean region in Spain, under the DH approach. The methodological process entailed building a spatial database collating asthma prevalence as dependent variable, and lifestyle, socioeconomic, and climate indicators as explanatory factors, and then evaluating the spatial variability of the relationships by combining the Principal Component Analysis (PCA), Multiscale Geographically Weighted Regression (MGWR) models and cartographic design techniques. MGWR evidenced spatially varying relationships operating at different scales. Lifestyles seem closely tied to the prevalence of asthma in most of the study area while urban functionality and local climate patterns seem to boost prevalence rates in some specific enclaves. Consequently, the social and environmental conditions that characterize the study area translate into several DH scenarios modulating the spatial distribution of asthma. This differential DH behavior detected by local regression models is relevant to guiding and refining public health decision-making. 相似文献
68.
Jennifer Rodrigues 《International Journal of Nautical Archaeology》2009,38(1):153-162
In 1993 a nationwide amnesty was declared in Australia, calling for members of the public who were in possession of historic shipwreck relics to declare them to their respective State cultural heritage management agencies. The amnesty was instituted in response to an amendment in the Commonwealth Historic Shipwrecks Act 1976 , which introduced 'blanket protection' for all shipwrecks and associated relics in Commonwealth waters which were at least 75 years old. This paper reports on a recent assessment of the process, consequences and implications of the amnesty, and discusses the significance of the results.
© 2008 The Author 相似文献
© 2008 The Author 相似文献
69.
Hotels and hotel chains are responding to globalization and increased competition through new marketing initiatives, employment practices, and restructuring decisions that are intensifying the work of cleaners. In this paper, we report on how such work intensification at two hotels in Montréal, Canada, is changing the nature of cleaners’ jobs. Specifically, we found that the numbers of operations to be completed, the numbers and weights of items to be cleaned, and the effort involved have all increased. “Flexible” employment relationships and outsourcing have also worsened cleaners’ workloads. In response to our research, the labour union representing cleaners has negotiated a lower number of room assignments per cleaner, as well as an improved way of taking into account the variability of work when determining the quota of rooms to be cleaned. Despite this, new marketing strategies continue to intensify work. We conclude that standards and regulation on a governmental level are a necessary complement to union actions. 相似文献
70.