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排序方式: 共有299条查询结果,搜索用时 15 毫秒
31.
Gary A. King M. Thomas P. Gilbert Eske Willerslev Matthew J. Collins Harry Kenward 《Journal of archaeological science》2009
We report the recovery of short fragments of PCR amplifiable ancient DNA from exoskeletal fragments of the grain weevil Sitophilus granarius (L.) extracted from Roman and medieval deposits in Northern England. If DNA preservation in archaeological insect remains is widespread then many applications in the spheres of evolutionary studies and archaeology can be conceived, some of which are outlined. 相似文献
32.
ABSTRACT In research conducted some 20 years ago, we elucidated the starkly lower suburbanization propensities of black households in the Washington, D.C. metropolitan area. The paper showed that simulated closure of large socio‐economic gaps between blacks and whites did little to diminish prevailing high levels of residential segregation or otherwise enhance moves by black households to areas of educational, employment, and housing opportunity. Some two decades later and in the wake of significant urban evolution, this paper assesses anew racial variations in residential location choice. Results of the multinomial logit (MNL) analysis indicate large, persistent racial differentials in intrametropolitan residential location choice. While black location choice in 2000 was relatively more dispersed than in 1980, it remained remarkably concentrated in D.C. and Prince George's County. As in our prior analysis, results showed that large simulated gains in black economic and educational status had little effect on prevailing racial segregation. These findings underscore the ongoing, limited access of black households to schooling, employment, and homeownership opportunities available outside traditional areas of settlement. In marked contrast, the locational choices of Latino and immigrant households bore greater similarity to those of whites and were more sensitive to improvements in socio‐economic status. 相似文献
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Theodore Shabad Andrew R. Bond Michael J. Bradshaw John F. Cushman Chauncy D. Harris Gary J. Hausladen 《Eurasian Geography and Economics》2013,54(6):388-433
A panel of geographers debates possible future developments in the Soviet Union in regional and environmental policy, water resource management, agriculture, industry, energy, population, urban growth and planning, transportation, and foreign trade. The present emphasis on modernization of existing plant capacity in cities of the western, more heavily settled regions of the USSR seems destined to continue, although it will be constrained by a growing shortage of industrial labor, declining terms of trade and resource oversupply in increasingly competitive export markets, and the continued resistance of Central Asian populations to urbanization and industrial employment. 相似文献
36.
Gary Downing 《Children's Geographies》2013,11(1):44-58
This article explores the ways that non-heterosexual young people are negotiating their identities and socio-sexual relations on the internet in the UK. Drawing on the key concepts of embodiment and performativity, and based on in-depth qualitative research with non-heterosexual youth and lesbian, gay, bisexual and transgender (LGBT) youth workers, this article investigates the use of social networking websites which have been specifically designed for LGBT users, and the connections between virtual and material spaces in young people's everyday lives. This research reveals that although the internet is an important medium through which new and existing socio-sexual trajectories are being negotiated, there is also a more complex and multi-dimensional relationship between young people's online and offline realities. 相似文献
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David Hunt 《Folklore》2013,124(3):319-334
Evidence shows divergent perceptions of the wolf in different parts of the world. The populations of Asia, the Near East and the indigenous peoples of North America see the wolf positively, as an ideal hunter, warrior and survivor in the wilderness, although shepherds and animal-herders in these regions seem to have an ambivalent attitude towards the animal. Among many of the peoples mentioned above, there appears to be a desire to emulate the wolf, and magical powers have been attributed to the animal and to his body parts. On the other hand, the wolf is feared as a ravenous beast by the populations of Europe and by European immigrants to America. 相似文献
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Gary McCulloch 《History of European Ideas》2013,39(6):814-815
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