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   210篇
  免费   13篇
  2023年   4篇
  2022年   4篇
  2020年   7篇
  2019年   22篇
  2018年   22篇
  2017年   21篇
  2016年   19篇
  2015年   4篇
  2014年   10篇
  2013年   33篇
  2012年   10篇
  2011年   11篇
  2010年   5篇
  2009年   12篇
  2008年   2篇
  2007年   5篇
  2006年   4篇
  2005年   1篇
  2004年   6篇
  2003年   4篇
  2002年   3篇
  2001年   1篇
  2000年   1篇
  1999年   3篇
  1998年   1篇
  1997年   3篇
  1996年   1篇
  1995年   1篇
  1993年   1篇
  1992年   2篇
排序方式: 共有223条查询结果,搜索用时 46 毫秒
11.
Along with a teaching collection, the Faculty of Medicine at the University of Western Ontario, London, Canada, began accepting medical artifacts for a historical museum in the early 1920s, although it never developed into more than an unofficial collection until the 1970s, when it was transformed into the Medical Museum and Archives at the University Hospital. In the 1990s, the artifacts were dispersed among several local institutions. The remaining objects at the university have been now reorganized as the Medical Artifact Collection. While these objects were once used to educate students about the practice and philosophy of medicine, they are now used to teach students about local, medical, Canadian and public history.  相似文献   
12.
13.
The US military has a long and robust history of scientific research programs, often conducted in conjunction with civilian scientists at non-military governmental agencies as well as universities. These programs flourished in the immediate post-Second World War and the early cold war years, as the field of military science expanded to address the sprawling Soviet threat. One area of growth was in atmospheric science, which had already taken off preceding Second World War in conjunction with the growth of air warfare. Advances in meteorology, cloud science and climatology enabled military interests to align with weather forecasters and also agricultural interests, as old ideas about cloud seeding and weather control were revived in the light of new research. The military, largely through the Air Force, advanced a series of projects investigating the potential of weather and climate control, manipulation, and ultimately weaponisation. These programs, which were sometimes linked to US Department of Agriculture programs aimed at improving agricultural production, persisted for decades. Some of the newly developed tools were deployed: local climate manipulation efforts during the Vietnam conflict were aimed at impeding traffic along the Ho Chi Minh Trail, with mixed results. Significant efforts came during the Weather Bureau leadership of Francis W. Reichelderfer, whose papers contain a wealth of information about efforts ranging from cloud seeding to proposals to drop atomic weapons on hurricanes. These papers, along with those of Weather Bureau scientist Harry Wexler, provide a fascinating window to a time when the US military and scientific establishment seemed poised to grasp the levers of power over nature itself. This paper describes these little-studied programs, and situates these efforts within the broader military science programs accompanying the emergence of air warfare, as well as post-war science programs aimed at countering the Soviet challenge.  相似文献   
14.
15.
16.
Although idealizations of motherhood are ever in flux, specific historical moments can be said to produce distinctive tropes of ‘good’ motherhood that have very real impacts on how women act and conceptualize themselves as mothers. This article examines good motherhood in its current iteration, and how now-common beliefs about breastfeeding are implicated in its construction. Furthermore, it looks at the ways in which idealizations of motherhood discipline the breastfeeding body so that it will fit into public space without disruption. I discuss the contradictory impacts of characterizations of the good mother as they appeared in the pro-breastfeeding dialogs that arose following a 2007 incident in which a mother was asked to cover herself up while nursing in a Kentucky restaurant. I posit that while these characterizations helped to make breastfeeding a more widely accepted public activity, they also had the effect of reifying a very narrow conception of what it means to be a good mother. I make this claim through an analysis of two common refrains heard in pro-public-breastfeeding arguments: breast milk is exceedingly healthy and mothers should not be persecuted if they nurse discreetly. Although these assertions together are compelling to the general public in that they provide a scientific justification for breastfeeding while at once assuaging fears of discomfort presented by a reproductive act being performed in a public space, I suggest that they also work to discipline women and maintain public-space-as-usual.  相似文献   
17.
18.
19.
20.
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