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   598篇
  免费   27篇
  2023年   5篇
  2020年   23篇
  2019年   15篇
  2018年   23篇
  2017年   29篇
  2016年   27篇
  2015年   18篇
  2014年   20篇
  2013年   171篇
  2012年   17篇
  2011年   19篇
  2010年   15篇
  2009年   8篇
  2008年   15篇
  2007年   13篇
  2006年   9篇
  2005年   9篇
  2004年   11篇
  2003年   6篇
  2002年   5篇
  2001年   9篇
  2000年   9篇
  1999年   15篇
  1998年   9篇
  1997年   14篇
  1996年   8篇
  1995年   9篇
  1993年   5篇
  1992年   9篇
  1991年   3篇
  1990年   2篇
  1989年   5篇
  1988年   4篇
  1987年   3篇
  1985年   4篇
  1984年   6篇
  1983年   4篇
  1982年   5篇
  1980年   3篇
  1979年   4篇
  1978年   2篇
  1977年   2篇
  1976年   6篇
  1975年   2篇
  1974年   2篇
  1973年   2篇
  1967年   2篇
  1965年   2篇
  1955年   2篇
  1951年   2篇
排序方式: 共有625条查询结果,搜索用时 15 毫秒
81.
82.
83.
In the northern Kimberley (WA) Aborigines and Europeans living and working on pastoral leases have improvised means of staving off, incorporating and generally managing the other's demands on their psychophysical resources. Local racial politics configure a hierarchised social field around a few central figures: founding European lease‐holders and their male children by non‐local, mixed‐descent Aboriginal women, mixed descent head‐stockmen born of a European leaseholder and a local Aboriginal woman, and then local Ngarinyin people who constitute most of the work‐force. In this paper, I analyse the inter‐cultural dynamics of this social field employing R.D. Laing's notion of the ‘family phantasy‘. The subject‐matter also entails theoretical reconsideration of questions concerning the relative openness or otherwise of Indigenous Australian socio‐cultural categories.  相似文献   
84.
85.
86.
Intensive agricultural systems interact strongly and reciprocally with features of the lands they occupy, and with features of the societies that they support. We modeled the distribution of two forms of pre-European contact intensive agriculture – irrigated pondfields and rain-fed dryland systems – across the Hawaiian archipelago using a GIS approach based on climate, hydrology, topography, substrate age, and soil fertility. Model results closely match the archaeological evidence in defined locations. On a broader scale, we calculate that the youngest island, Hawai'i, could have supported 572 km2 of intensive agriculture, 97% as rain-fed dryland field systems, while Kaua'i, the oldest island, could have supported 58 km2, all as irrigated wetland systems. Irrigated systems have higher, more reliable yields and lower labor requirements than rain-fed dryland systems, so the total potential yield from Kaua'i (49k metric tons) was almost half that of Hawai'i (97k metric tons), although Kaua'i systems required only 0.05 of the agricultural labor (8400 workers, versus 165,000 on Hawai'i) to produce the crops. We conclude that environmental constraints to intensive agriculture across the archipelago created asymmetric production efficiencies, and therefore varying potentials for agricultural surplus. The implications both for the emergence of complex sociopolitical formations and for anthropogenic transformation of Hawaiian ecosystems are substantial.  相似文献   
87.
This paper considers the evidence for the dissemination of the Vita Columbani . Using a number of seventh-century texts as well as the Vita itself, it proposes that the Vita Columbani had a wider dissemination in Merovingian Gaul than has hitherto been acknowledged. It suggests that the Vita was not merely confined to monastic and ecclesiastical circles, but was also intended for a royal and aristocratic audience closely linked to the Columbanian communities.  相似文献   
88.
89.
90.
A metallurgically-oriented excavation in Area A at Tell es-Safi/Gath yielded evidence for iron and bronze production dating to the early Iron Age IIA. Two pit-like features, which differed considerably from one another in colour, texture and content, were excavated. Evidence shows that each feature represents a different in situ activity related to iron production, inferred by the presence of hammerscales, slag prills and slag. An upturned crucible was found on top of one of the features. Analysis of the crucible slag showed that it was used for bronze metallurgy. Tuyères, both round and square in cross-section, were found in and around the two features. The presence of the two industries together presents a unique opportunity to explore the relationship between copper and iron working. This is especially important against the background of the scarcity of evidence for iron production in the Levant during the early phases of the Iron Age.  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