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   1519篇
  免费   50篇
  1569篇
  2020年   20篇
  2019年   27篇
  2018年   45篇
  2017年   50篇
  2016年   51篇
  2015年   33篇
  2014年   49篇
  2013年   468篇
  2012年   27篇
  2011年   45篇
  2010年   30篇
  2009年   45篇
  2008年   54篇
  2007年   37篇
  2006年   24篇
  2005年   30篇
  2004年   19篇
  2003年   14篇
  2002年   31篇
  2001年   26篇
  2000年   19篇
  1999年   24篇
  1998年   17篇
  1997年   21篇
  1996年   11篇
  1995年   13篇
  1994年   12篇
  1993年   14篇
  1992年   10篇
  1991年   14篇
  1990年   14篇
  1989年   14篇
  1988年   8篇
  1987年   10篇
  1986年   14篇
  1985年   18篇
  1984年   23篇
  1983年   19篇
  1982年   17篇
  1981年   10篇
  1980年   12篇
  1979年   24篇
  1978年   18篇
  1977年   9篇
  1976年   12篇
  1975年   13篇
  1974年   9篇
  1973年   6篇
  1972年   7篇
  1969年   5篇
排序方式: 共有1569条查询结果,搜索用时 15 毫秒
151.
ABSTRACT The twenty‐first century will be one of intensified urbanization, on a scale never before experienced. How do urban systems and individual cities change and develop? The social sciences have many different approaches to analyzing the economic, social, and spatial dimensions of urban change. We inventory some of these approaches and their implications for public policy toward cities, urban change, and economic development.  相似文献   
152.
153.
154.
Results of analyses of the photoperiod response gene (PPD-H1) and simple sequence repeats (SSRs) in modern landraces of cultivated barley were used as evidence for the mechanism of agricultural spread in Neolithic Europe. In particular, we explored the usefulness of considering adaptive genes as indicators of past selective pressures acting on crops, during their spread through Europe. In some areas, such as the Alpine region, Britain and Scandinavia, we have evidence to suggest that the adaptation of crops to certain climatic conditions may have contributed to the timing of agricultural spread. At the northern fringes of Europe, and in higher altitude locations in central Europe, the introduction of more suitably adapted cereals may have facilitated successful agriculture to trigger agricultural expansion. This research opens up the possibility of investigating other genetic adaptations to climate, which would permit a fuller evaluation of the relative contributions of climate/crop and forager/farmer interactions in the process of agricultural spread.  相似文献   
155.
156.
This paper commences a geographical engagement with makerspaces, hacklabs, and other workshop spaces which form part of a broader ‘maker movement’. It examines the arts of inquiry and experimentation found at one such site, drawing on ethnographic field work at the Edinburgh Hacklab, and makes connections with emerging themes of interest to geographers, including creativity, experiment, art, and nonhuman agency. Putting standard innovation-driven narratives of makerspaces into question, attention is instead turned to the events of emergent experimentation and creativity taking place in these spaces. To this end, Andrew Pickering’s concept of ‘ontological theatre’, describing powerful focal instances of agential symmetry between humans and nonhumans, is engaged with, in order to understand the links between Hacklab activities and emergent and complex aspects of nonhuman agency.  相似文献   
157.
158.
Neddy Larkin, a Bundjalung man from New South Wales, Australia, was stolen from his grave and in 1891 sold to the Peabody Museum, Cambridge, MA. This paper uses the methodology and concepts outlined in Latour’s An Inquiry into Modes of Existence to chart Neddy Larkin’s transitions from kinsman to scientific data.  相似文献   
159.
This article examines the intersection between the Cold War and decolonisation in anti-Communist Asia in the 1950s. Drawing on the papers of former South Korean President Syngman Rhee housed at Yonsei University, the article explores both the motivations behind as well as the constraints upon South Korea's efforts to cultivate a military alliance in what it called ‘Free Asia’. Articulating some of the concrete political differences between South Korea and its potential partners in Asia, the article argues that Rhee's hardline views of the Cold War were interwoven with his ambivalence about Japan's reintegration in the post-war world. As a result of this intersection between the Cold War and decolonisation, the South Korean President was unable to achieve consensus with the rest of anti-Communist Asia. In exploring this chapter of South Korean diplomacy, the article calls on Cold War diplomatic history to integrate non-Communist Asia and for the historiography of decolonisation to investigate the legacies of Japan's empire in post-war Asia. It also suggests that scholars ought to reflect more deeply on the interrelationship between the Cold War and decolonisation.  相似文献   
160.
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