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   631篇
  免费   21篇
  2023年   3篇
  2020年   11篇
  2019年   20篇
  2018年   18篇
  2017年   31篇
  2016年   26篇
  2015年   10篇
  2014年   13篇
  2013年   227篇
  2012年   9篇
  2011年   10篇
  2010年   3篇
  2009年   8篇
  2008年   14篇
  2007年   10篇
  2006年   9篇
  2005年   11篇
  2004年   13篇
  2003年   6篇
  2002年   5篇
  2001年   7篇
  2000年   5篇
  1999年   7篇
  1998年   5篇
  1997年   5篇
  1995年   7篇
  1994年   4篇
  1993年   13篇
  1992年   7篇
  1991年   7篇
  1990年   8篇
  1989年   7篇
  1987年   5篇
  1986年   2篇
  1985年   8篇
  1984年   11篇
  1983年   9篇
  1982年   8篇
  1981年   8篇
  1980年   6篇
  1979年   6篇
  1978年   5篇
  1977年   6篇
  1976年   9篇
  1975年   4篇
  1974年   5篇
  1973年   4篇
  1971年   2篇
  1969年   2篇
  1968年   3篇
排序方式: 共有652条查询结果,搜索用时 15 毫秒
51.
The archaeological record of Oldowan hominins represents a diverse behavioral system. It has been suggested that exploitation of lithic resources by Oldowan hominins was simplistic and represented mostly use of local sources of stone. Here we investigate the raw material selection and transport behaviors of Oldowan hominins reflected in the stone artifact assemblages from the Kanjera South Formation, South Rachuonyo District, Kenya. Using geochemical methods (ED-XRF) artifacts are linked to primary and secondary source outcrops throughout southwestern Kenya. These data show that hominins selected raw materials for transport at frequencies that are significantly different from their availability on ancient landscapes. Furthermore, a substantial proportion of the assemblage represents transport over relatively long distances (>10 km). Our study further suggests that in the early stages of stone tool use hominins used a wide variety of raw materials and selected these materials at some distance from their eventual discard locations. Early hominin behavior may have incorporated an understanding of raw material source distributions across a more extensive landscape than has been previously documented. This supports the growing perspective that Oldowan technology represents a more complex behavioral pattern than is usually associated with the beginnings of hominin tool use.  相似文献   
52.
This article reviews the state of the two security and defence institutions available to west Europeans: NATO and the EU's common European Security and Defence Policy (ESDP). In each case, the authors assess the political maturity and stability of the institution, and then ask what it can contribute in terms of coordinated military capability to west European's strategic readiness. NATO's Prague summit in November 2002 will address the thorny issue of the next tranche of post–Cold War enlargement. But beyond the predictable debate about which candidates to admit, and what should be offered to those unsuccessful in their bid, there will be a far more urgent and important agenda to be discussed at Prague—the military capabilities of the European allies. Given that ESDP is still far from achieving its capability goals, the authors argue that the time is right for European allies to begin thinking in terms of generating a composite, joint strike force which could be configured to be interoperable with US forces and which could salvage something useful from the disheartening lack of progress in developing a European military capability.  相似文献   
53.
Communion seasons were a distinctive and important part of nineteenth–century Presbyterian culture. This paper examines such occasions in the Presbyterian–dominated colony of Otago, New Zealand. Communion was a significant social event, and its preparatory fast days were holidays for the whole community. As a spiritual event, the communion season induced an experiential and emotive piety, belying common modern perceptions of nineteenth–century Presbyterianism as an ascetic and intellectualised faith. Over the period from the founding of the colony (1848) to the turn of the century, certain rituals of the communion season altered significantly. Some changes occurred in response to new ideologies such as temperance; others reflected a softening of traditional Calvinist theology in favour of a more inclusive religion, Presbyterians being invited to communion rather than having to prove themselves fit to attend. Such changes were not unique to Otago, and practice in the colony reveals a strong continuity with events in Scotland: the Presbyterian communion season proved a remarkably successful import to colonial Otago.  相似文献   
54.
55.
56.
57.
58.
59.
60.
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