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   1257篇
  免费   2篇
管理学   71篇
民族学   52篇
人才学   2篇
人口学   140篇
丛书文集   29篇
理论方法论   225篇
综合类   67篇
社会学   628篇
统计学   45篇
  2020年   2篇
  2019年   3篇
  2015年   2篇
  2014年   5篇
  2012年   200篇
  2011年   103篇
  2010年   27篇
  2009年   17篇
  2008年   60篇
  2007年   76篇
  2006年   75篇
  2005年   58篇
  2004年   42篇
  2003年   42篇
  2002年   41篇
  2001年   35篇
  2000年   33篇
  1999年   29篇
  1998年   14篇
  1997年   14篇
  1996年   24篇
  1995年   13篇
  1994年   12篇
  1993年   26篇
  1992年   28篇
  1991年   29篇
  1990年   10篇
  1989年   21篇
  1988年   16篇
  1987年   23篇
  1986年   14篇
  1985年   18篇
  1984年   19篇
  1983年   15篇
  1982年   29篇
  1981年   13篇
  1980年   21篇
  1979年   14篇
  1978年   2篇
  1975年   4篇
  1974年   2篇
  1973年   1篇
  1972年   1篇
  1971年   6篇
  1970年   2篇
  1969年   2篇
  1968年   2篇
  1967年   6篇
  1966年   2篇
  1948年   2篇
排序方式: 共有1259条查询结果,搜索用时 15 毫秒
71.
This paper describes an experimental study investigating pilots' manual flying skills. In today's line oriented flight training, basic flying skills are neglected frequently. So, the study examines the manual flying skills of commercial airline pilots under the influence of several performance shaping factors like training, practice or fatigue in a landing scenario. The landing phase shows a disproportionate high percentage of aircraft accidents and it is typically flown by hand. The study is to be undertaken with randomly selected pilots in a full motion flight simulator to ensure a high validity of the results.  相似文献   
72.
73.
Through a comprehensive literature search, the authors of this systematic review identified 21 articles focused on primary prevention of HIV/AIDS for adults aged 50 and over. Three major challenges to providing HIV/AIDS education for older adults include health professionals' ageism, older adults' reluctance to discuss sexuality, and their misconception of their HIV risk. Clinical guidelines for social workers, nurses, and physicians identified the importance of sharing information and assessing risk, considering cultural diversity, and devising creative delivery strategies. Three models of HIV/AIDS education include group education programs delivered by social workers or other health professionals, peer education models, and one-on-one early intervention models including HIV/AIDS testing. Additional outreach and research on HIV/AIDS prevention among older adults is needed.  相似文献   
74.
75.
76.
77.
“理想型”的西方民主是否理想?“欧洲病夫”在70年代,国家发展的渐进性出现了变化。《英国是大国还是小国?》、《国家在自杀吗?》、《英国能否支撑下去?》、《无法运转的未来》、《英国是否正在灭亡?》,这些著作和文章的标题,说明了正在发生的事情。衰落时期的民族主义,其性  相似文献   
78.
十五年前,当我感到有责任为德意志联邦共和国实现著名的7‰的官方发展援助目标时,我依然相信以下这个似乎不言自明的道理:我们国家的那种高增长率可能有助于我们把7‰的马克转用到穷国去.幸运的是,在1968-1974年间,当我努力实现这个7‰的目标时,联邦共和国的经济实现了前所未有的高增长率,而且我推测将来也不  相似文献   
79.
This article reports results of a field experiment in which two hundred e-mails were sent to authors of recent articles in economics that had promised to send the interested reader supplementary material, such as alternative econometric specifications, "upon request." The e-mails were sent either by a researcher affiliated at Columbia University, New York or the University of Warsaw, Poland; furthermore, the authors' position (assistant professor) was specified in half the e-mails only. Overall, 64% of the approached authors responded to our message, of which two thirds (44% of the entire sample) delivered the requested materials. The frequency and speed of responding and delivering were very weakly affected by the position and affiliation of the sender. Gender or affiliation of the author, number of citations or journal impact factor or the type of object in question seemed to make no difference. However, authors of published articles were much more likely to share than authors of working papers.  相似文献   
80.
Euthanasia and assisted suicide are subject to an ongoing debate and discussed with various aspects. Because physicians are in a profession closely related to euthanasia, their attitudes toward this subject are significant. Thus, research intending to explore their opinions is carried out in many countries. In this study, opinions of the physicians regarding euthanasia's definition, contents, legal aspects, and acceptable conditions for its application are addressed. The questionnaire was given to 949 physicians, more than 1% of the total working in Turkey. Of the physicians who participated in the study, 49.9% agreed with the opinion that euthanasia should be legal in certain circumstances. In addition, 19% had come across a euthanasia request and the majority of physicians (55.9%) believed that euthanasia is applied secretly in the country despite the prohibitory legislation. In conclusion, the authors infer from the study itself and believe that euthanasia should be legal in certain circumstances and that the subject, which is not in the agenda of the Turkish population, should continue to be examined.  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