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841.
Soft Transport Policies and Ground‐Level Ozone: An Evaluation of the “Clear the Air Challenge” in Salt Lake City
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In recent years, communities have begun to implement both “soft” and mandatory policies designed to address worsening air quality. Voluntary or soft transportation policies have included air quality alert systems that encourage people not to drive on days when the air quality index is above a specified threshold and public education/action campaigns that focus on reducing automobile related travel. In this article, we evaluate the effectiveness of one such soft policy, the Clear the Air Challenge (CAC), in reducing ground‐level ozone during the Wasatch Front's summer ozone season. Using daily ozone data and color‐coded daily air quality designations from 2006 through 2012, we estimate a range of nonequivalent control group models. In only one of the models does the CAC generate a statistically significant but small reduction in ground‐level ozone. Future research should assess the full range of costs and benefits to the public associated with such soft transport policies. 相似文献
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843.
Sarah Smith 《Australian Journal of International Affairs》2017,71(4):405-422
In March 2016, the United Nations Security Council adopted its first resolution devoted entirely to the prevention of peacekeeper sexual exploitation and abuse (SEA) in peace operations. This article examines resolution 2272 by drawing on past practice and the perspective of those at mission sites—namely, Timor-Leste—arguing that the mechanism it establishes—repatriation—is limited in its capacity to prevent SEA and provide justice outcomes. The article demonstrates the pervasive sense of powerlessness regarding SEA and the impunity of those who do perpetrate SEA. The article further situates the issue of SEA by peacekeepers in the post-conflict (gendered) context in which it occurs, arguing that the resolution does not challenge the underlying norms and gendered relations of power that underpin peace operations. Instead, the resolution frames SEA as chiefly an issue of embarrassment for the United Nations and makes scant mention of the populations that peace operations are mandated to protect, as well as the perspectives and needs of victims of SEA. 相似文献
844.
Sally K. May Melissa Marshall Inés Domingo Sanz Claire Smith 《Public Archaeology》2017,16(3-4):172-190
In this paper we investigate the pedagogy of archaeological field schools. Specifically, we explore the combination of tertiary level field schools and Indigenous community (or community-based) archaeology. Using a detailed case study of a rock art field school in Arnhem Land, Australia, we explore the processes and outcomes of combining archaeological field training with the ideas and methods of community archaeology. We discuss the relationship and unique challenges faced by such community archaeology field schools, particularly that of balancing the priorities of competing stakeholders. Our discussion illustrates the complexities of training students to work in an environment where cultural belief systems are still strongly linked to sites and landscapes. While the challenges are numerous, the outcomes, particularly for students, provide an unparalleled educational experience, one that cannot be obtained in any other learning format. 相似文献
845.
Erin K. Smith Alejandro Clarot Francisco Gallardo 《The Journal of Island and Coastal Archaeology》2017,12(4):558-571
Stable isotope analysis of bone collagen is frequently employed as a means of studying the breastfeeding and weaning practices (BWP) of archaeological populations. Such studies are strengthened greatly through the application of statistical models that permit precise and model-bound estimates of weaning age, duration, trophic enrichment, and the isotopic characterization of supplementary foods. Here we present the result of a stable isotope (δ15N) and Bayesian computational modeling study of bone collagen from human subadults from two coastal cemetery sites located near the mouth of the River Loa in the Atacama Desert. Recent bioarchaeological and paleodemographic research on remains from these marine hunter-gatherer sites, which are contemporary with the Formative Period (1500 BC–AD 400), has found evidence for notably elevated rates of female fertility. Ultimately, we argue that the modeled BWP parameters, which indicate the early introduction of supplementary foods, support an argument of high fertility as gleaned from the bioarchaeological evidence, and that these results provide novel insights into the child-rearing practices of the coastal populations of the Atacama. Indeed, these populations would have seemed to have developed a set of BWP that carefully balanced the biological and economic production/reproduction of the community. 相似文献
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848.
R. A. Paterson B. J. Lowe C. A. Smith J. M. Lord R. Ngarimu‐Cameron 《Archaeometry》2017,59(5):965-979
Understanding the composition of an artefact has ramifications for advancing human history and behaviour knowledge, providing cultural information about trade, agricultural practices and adaptation to new environments. However, accurate plant identification from artefacts is problematic, since textile production, age, dirt and/or conservation treatments obscure morphological features, and specimen size and/or ethical considerations hamper modern analytical methods. This study tested the efficacy of polarized light microscopy (PLM) in the identification of New Zealand plant species commonly used in Māori textiles, and demonstrates that morphological and birefringent features observed using PLM have the potential to distinguish between‐ and within‐plant genera. 相似文献
849.
Lindsay Aqui 《国际历史评论》2017,39(4):575-591
The views held by African Commonwealth leaders are absent from the historiography of the Britain's first EEC application, despite their value for understanding why the Macmillan government experienced such difficulty in reorienting its foreign policy towards Europe. Between July 1961, when Ghanaian President Kwame Nkrumah established his opposition to the application, and January 1963, when it was vetoed by French President Charles de Gaulle, the Anglo-Ghanaian relationship was characterized by tension and acrimony. This article seeks to understand the impact of Nkrumah's objections to the application and Macmillan's reaction to Nkrumah's concerns. Though the Ghanaian President alone did not alter the course of Britain's approach to the Community, he did add to the tense atmosphere in which London considered how to approach the Commonwealth. Furthermore, Macmillan's efforts to maintain a positive relationship with Nkrumah, in the context of the Cold War, demonstrate the reluctance with which the prime minister loosened ties with the Commonwealth. 相似文献
850.
This paper considers the phenomenon of urbanism and the ‘mega-site’ from the perspective of the Neolithic site of Çatalhöyük in Anatolia. At 13 hectares, with 18 levels of Neolithic occupation spanning 1100 years, and peaking at around 8000 inhabitants, Çatalhöyük is considered to be an important source of evidence regarding the transition from settled villages to urban agglomeration. While parallels can be identified between spatio-temporally separated sites, we argue that traditional models of urbanism disregard divergent long-term trajectories. Thus, a comparative look at different types of sites has the potential to provide new insights into broader questions concerning highly populated permanent settlements in the prehistoric period and contemporary concepts of urbanism, providing a useful alternative to diffusionist or grand narratives. Here, we consider social and ritual practice, settlement layout and space, and social organization as they relate to the urban qualities of this prehistoric town and within the Middle Eastern Neolithic context. 相似文献