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This paper reviews the meaning of the term ‘density’ and the problems associated with the methods of density determination for animal bones in archaeology. It has often been assumed that density is the intrinsic property of most influence in controlling the rate of a bone's decay. Values for whole bone density have been published only for large mammal bone, however. Fish bone appears to be particularly vulnerable to decay, and usually a restricted range of skeletal elements are recovered from archaeological sites. The object of this study was to examine the relationship between fish bone density and the ability of the bone to survive on occupation sites and in archaeological deposits. A set of ‘density’ measurements was established for the bones of cod (Gadus morhua). The usefulness of these measurements as a predictive tool in archaeoichthyological studies is assessed. It was found that ‘density’ as measured did not explain adequately the relative survival of skeletal elements after mechanical abrasion and weathering, or within archaeological deposits.  相似文献   
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The immigration policies adopted by Western European states during the interwar period were marked by increasing restriction, especially after 1933. One notable exception to this was the relatively generous treatment afforded to women who were prepared to take up employment as domestic servants. This article looks at the reasons behind this anomaly and compares the responses of three states that were in the front line of the refugee efflux from Germany and Eastern Europe in the years leading up to the Second World War.  相似文献   
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Shining a light on the various non-formal education spaces that have garnered attention in geographies of education over the past two decades, this review takes stock of how historical spaces of education and learning have become a key focus of this body of work. In so doing, the review signals prominent and emergent themes around which scholarship in this subdiscipline has cohered: most notably, geographies of citizenship and morality in informal education spaces, and the radical pedagogic practices of alternative education spaces. As well as looking back, the review also signals two areas that scholars in the field should consider engaging with more closely: Black education and decolonial education. Analysing literature in history and sociology on the Black education movement in Britain, the paper calls for geographies of education to engage more closely with work published in cognate disciplines and not to overlook the relational nature of decolonial education in global north contexts.  相似文献   
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Vladimir Putin has been president of Russia for eighteen months, sufficienttime for some judgement about his style of leadership and achievements to have been made. He set out to restore order to a Russia that was fragmenting in Yeltsin's latter years and to revive Russians' pride in their country. Nonetheless, he remains committed to a liberal market economy integrated with the world economy. He encouraged force to bring order to Chechnya, but has not really tackled the problem of reconstruction. He has brought the regions under greater control by the centre, but has been prepared to compromise to avoid confrontation. His most tangible achievement to date has been in championing legislation, most of it long overdue, to establish the legal basis of a market economy. He has been able to exploit a working majority in the parliament, which Yeltsin never enjoyed. The success of this enterprise will depend to some degree on its political context. Persistent efforts by Putin and his team to exert control over the political process and the media will be counterproductive if they concentrate power with the president but leave him without broadly based, independent political support. Putin is likely to remain in power until 2008, however, so he has time on his side.  相似文献   
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