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51.
Jelmer W. Eerkens Gry H. Barfod Kevin J. Vaughn P. Ryan Williams Charles E. Lesher 《Archaeological and Anthropological Sciences》2014,6(3):241-254
The Nasca culture of the south coast of Peru developed during the first millennium ad and is known internationally for its elaborately decorated polychrome pots. Despite decades of iconographic analysis, little is known about the more technological aspects of Nasca pigment production and application. We present results from a pilot study on iron isotopes as a potential line of inquiry into the differences between red and black pigments in Nasca pigments. As well, we conduct a small firing experiment to examine potential changes in isotope composition. Our analyses show three significant results. First, firing does not change the isotopic ratios of Fe in pigments. Second, red and black pigments show differences in their iron isotope composition, which relate to differences in the minerals used to make the different colors. Third, naturally available hematite samples show greater isotopic variation than pigment samples, suggesting that people selected a limited range of iron oxides to produce pigments. 相似文献
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Nancy Kelley 《Children's Geographies》2006,4(1):37-44
Involving children in policy is now popular, a recent UK example being the consultation on Every Child Matters. This can be viewed as progress in increasing children's status as stakeholders in policy formation. However, questions remain about the reality of children's engagement and the validity of the methods used to gather, analyse and present their views. We need to protect children from exploitative or tokenistic processes and differentiate between gathering children's views and involving them as partners in policy formation. The former requires greater rigour of methodology. The latter requires moving from short term policy development to a longer term shared engagement enabling powerful adults and children to think collaboratively. 相似文献
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Nancy Levene 《European Legacy》2004,9(1):43-54
It is commonplace in philosophy, political theory, and theology to speak of the other and the problem of the identity of the West. No one has done as much to foreground the language of the other in recent years as Emmanuel Levinas, whose works have sparked a renewed interest in ethics across the humanities. Moreover, few have advanced as forceful a critique of European otherness, not only its exclusivity (whereby the other is marginalized) but also its hegemony (whereby the other is absorbed). I explore Levinas's critique of Western ethical thought in order to try to pinpoint what exactly he offers to post‐Hegelian reflection on the other, focusing on his insistence that equality must be grounded in the asymmetry of ethics. The question is: does this take one further than Europe, modernity, the West? If so, where is one thereby going? If not, what is novel or important in these claims? 相似文献
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Since his first book The Cholera Years appeared in 1962, Charles Rosenberg has had an enormous influence on the history of medicine. Not the least of that influence has been exercised through his role as a graduate teacher, advisor, and mentor. This article compares Rosenberg's work with that of his students, to see if there is such a historiographic identity as the "Rosenberg School." The authors, two Rosenberg students from different generations, conclude that there is not such a school, at least in the classic sense of the term. Yet they argue that certain common assumptions, or "Rosenberg Rules," have been passed on from Rosenberg to the other scholars he has influenced. They also discuss the challenges they have encountered in applying Charles's conceptual framework, worked out primarily in pre-1920 terms, to the late twentieth-century history of American medicine. 相似文献
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Justin C. Williams 《Geographical analysis》2002,34(4):330-349
The land acquisition problem is a spatial partitioning problem that involves selecting multiple parcels to be acquired for a particular land use. Three selection criteria are considered: total cost, total area, and spatial contiguity. Achieving contiguity or connectivity has been problematic in previous exact methods for land acquisition. Here we present a new zero‐one programming model that enforces necessary and sufficient conditions for achieving contiguity in discrete cell landscapes, independent of other spatial attributes such as compactness. Computational experience with several demonstration problems is reported, and results and extensions are discussed. 相似文献
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This article examines how the British government has responded to Zimbabwe’s ongoing crisis. This case raises several wider issues for British foreign policy, most notably the question of how much leverage London can exercise on the international scene in general, and over relatively small and weak states like Zimbabwe in particular. Zimbabwe’s crisis also raises profound questions about the appropriate balance between bilateral and multilateral policies, and between engaging in public criticism and conducting so–called ‘quiet diplomacy’. While bilateralism clearly has not worked, multilateralism has revealed its own frustrations, especially given the reluctance of many African elites within a number of organizations to criticize President Mugabe’s policies. This reluctance threatens to unravel the British Labour government’s stated objectives in Africa while at the same time raising important doubts over the credibility of the New Partnership for Africa’s Development (NEPAD), and whether an ‘Africa moment’ can be discerned in the manner articulated by prime minister Tony Blair. 相似文献