首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   477篇
  免费   16篇
  2024年   1篇
  2023年   7篇
  2022年   2篇
  2021年   1篇
  2020年   12篇
  2019年   8篇
  2018年   22篇
  2017年   39篇
  2016年   30篇
  2015年   16篇
  2014年   25篇
  2013年   76篇
  2012年   32篇
  2011年   30篇
  2010年   9篇
  2009年   15篇
  2008年   11篇
  2007年   7篇
  2006年   3篇
  2005年   71篇
  2004年   32篇
  2003年   12篇
  2002年   4篇
  2000年   2篇
  1999年   5篇
  1998年   1篇
  1997年   4篇
  1993年   2篇
  1992年   1篇
  1991年   1篇
  1989年   2篇
  1987年   3篇
  1986年   1篇
  1982年   1篇
  1981年   1篇
  1973年   1篇
  1971年   2篇
  1970年   1篇
排序方式: 共有493条查询结果,搜索用时 15 毫秒
81.
The aim of this paper is to present and discuss empirical evidence on the dynamics of occupation and site formation processes from contemporary mobile campsites in Northwest Siberia. The questions posed are derived generally from archaeological studies of Upper Paleolithic record in Europe. We document the active Nenets summer camps at lakes and the abandoned winter and spring camps in the open tundra and the forest tundra. Analysis of the floral and zoological resources shows that plant resources and fish are available predominantly in the summer while reindeer are abundant in these regions in fall and winter when they return from summer pastures further north. When natural resources are not available, groups supplement with food purchased at shops. Within these living camps, “structures évidentes” and “structures latentes” of classical French paleoethnology cannot be distinguished as clearly as at Upper Paleolithic sites: and architectural remains, ash from hearths, and other objects may be removed from the central areas towards the site peripheries. However the investigated camps preserve a discrete structure with interior living areas (including children’s playgrounds), exterior areas with evidence of reindeer carcass processing, woodworking, and other activities, peripheral toss zones, and dispersed activity remains in the surrounding landscape.  相似文献   
82.
Different ideas are proposed all the time in archaeology. These often rise or fall based on how well they predict objective, measureable characteristics of the archaeological record. But other ideas are more paradigmatic, concerned with how we think about the archaeological record rather than the record itself. What determines which ideas rise or fall? This essay considers the specific question of why Lewis Binford’s middle-range approach became more prevalent over the very similar formation-process approach of Michael Schiffer in the 1970s and 1980s. It is hypothesized that while an approach’s ability to predict objective characteristics of the archaeological record is one selective factor, in this particular case, other factors, including personality and, especially, the association between Binford’s approach and significant, long-standing problems of prehistory, were also significant selective factors.  相似文献   
83.
84.
The Matthew and Matilda Effects in science were coined in 1968 (Robert K. Merton) and in 1993 (Margaret W. Rossiter) respectively, as tools to analyse the reward systems of science. By proposing the African Eve Effect in science as a third effect, the original scope for analysis of these systems is broadened from the social structure of science to the anthropological dimension of science. Similarly, the ??psychosocial processes?? that were considered as affecting the reward systems (Merton, Science 159:56?C63, 1968) are extended to include discursive practices. The African Eve Effect refers to the scientific notion of the ??African Eve?? (or mitochondrial (mtDNA) Eve), a concept put forward by scientists to designate the genetic mother of all modern humans. Three discursive conventions constitute the African Eve Effect and together shape patterns of the distribution of recognition for scientific work: projecting imaginative geographies of otherness onto the frontiers of science; collecting, transporting and enframing material and ideas according to a Western epistemological order; and ??evolutionising?? nature and the human in science. The objective of this paper is to specify and illustrate an experimental tool for analysing the entanglement of the reward system in science with culturally fashioned imaginaries and agendas.  相似文献   
85.
The shuteibo, a type of communal cemetery characterized by a circular embankment, was constructed in the latter half of the Late Jomon (c. 1520 cal BC–1250 cal BC) in Hokkaido, Japan. Shuteibo at the Kiusu, Misawa-1, Bibi-4 and Kashiwagi-B sites are key to understanding the complex hunter-gatherer societies of the Late Jomon. Elite graves inside the shuteibo and non-elite graves outside them show clear differences in terms of grave goods, red ocher and grave markers at Kiusu-4. These communal cemeteries may have been created and maintained by elites who had access to highly valued materials, such as jadeite, through long-distance trade. Differences in the number of graves and grave goods among shuteibo at the Misawa-1 and Bibi-4 sites indicate differences in group size and intra-site elite differentiation. The Kiusu site has both the largest example and the largest concentration of these cemeteries in Hokkaido. At the inter-site level, differences in the size of these communal cemeteries indicate variability in the number of corporate groups as well as in relative power between sites.  相似文献   
86.
Book reviews     
In the context of a shift away from municipal multiculturalism towards community cohesion, and in the light of renewed debates around difference, national identity and Britishness, this article sets out a geographically informed theoretical framework which focuses upon the spatial (re)construction of racial and ethnic identities. The article develops the idea of the everyday as a way of viewing the spatially contingent, complex and negotiated state of inter-ethnic relations in a specific UK city. Not only does this reveal the manner in which strong and stubborn boundaries between social groups are entrenched through the (re)enforcement of spatialised relations of power, but also how accommodations across, between and within difference are realised. Through the employment of empirical material from Leicester, England, the article contends that everyday solidarities emerge from a number of intersecting spatial influences which do not equate to abstract or fixed versions of national belonging.  相似文献   
87.
We present the first analysis of the influence of climate change on carbon and oxygen isotope fractionation factors for two saccharides (glucose and α-cellulose) of pine wood. The conifers grew in the Niepo?omice Forest in Poland and the annual rings covered a time span from 1935 to 2000 AD. Glucose samples from acid hydrolysis of α-cellulose were extracted from annual tree rings. The carbon and oxygen isotope fractionation factors between glucose and α-cellulose were not stable over time. The mean value for the carbon isotope fractionation factors between glucose and α-cellulose was greater than unity. The mean value for the oxygen isotope fractionation factors between glucose and α-cellulose was lower than unity. We established, with respect to climate change, the significance of the interannual and intraannual variation in the carbon and oxygen isotope fractionation factors between both saccharides. We used moving interval correlation results for May of the previous year through September of the current year using a base length of 48 years. The relationship with summer temperature is the main climate signal in the carbon isotope fractionation factor between glucose and α-cellulose. The relationship with autumn sunshine is the main climate signal in the oxygen isotope fractionation factor between glucose and α-cellulose for the tree ring chronology.  相似文献   
88.
89.
90.
The Activities of Polish Communists as a Source for Stalin's Policy Towards Poland in the Second World War  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号