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   174753篇
  免费   7797篇
  国内免费   155篇
  2021年   1503篇
  2020年   2786篇
  2019年   3452篇
  2018年   3531篇
  2017年   4001篇
  2016年   4628篇
  2015年   3942篇
  2014年   4814篇
  2013年   23491篇
  2012年   4522篇
  2011年   3709篇
  2010年   3937篇
  2009年   4794篇
  2008年   3957篇
  2007年   3441篇
  2006年   4045篇
  2005年   4016篇
  2004年   3504篇
  2003年   3166篇
  2002年   2967篇
  2001年   3521篇
  2000年   3371篇
  1999年   3282篇
  1998年   2859篇
  1997年   2674篇
  1996年   2574篇
  1995年   2420篇
  1994年   2391篇
  1993年   2348篇
  1992年   2704篇
  1991年   2550篇
  1990年   2394篇
  1989年   2308篇
  1988年   2265篇
  1987年   2282篇
  1986年   2246篇
  1985年   2489篇
  1984年   2553篇
  1983年   2310篇
  1982年   2386篇
  1981年   2352篇
  1980年   2183篇
  1979年   2205篇
  1978年   2197篇
  1977年   2170篇
  1976年   1946篇
  1975年   2020篇
  1974年   2071篇
  1973年   1955篇
  1972年   1543篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
51.
The purpose of this study is to compare field investigative interviews of children (FIIC) with three different legal outcomes in child sexual abuse cases: (i) insufficient evidence to proceed (IEP); (ii) convictions; or (iii) acquittals by the court. One hundred FIIC were divided into one of the three outcome possibilities. Amongst the female interviewees older than 10 years, there were no cases of acquittals and the convicted cases were over-represented. The children's response to open questions was found to be the main difference between the three FIIC outcomes. The responses to these open questions were 1.9 and 2.3 times longer in the convicted cases compared to acquittals and IEP. Possible explanations for the result are discussed. Copyright © 2009 John Wiley & Sons, Ltd.  相似文献   
52.
53.
54.
Range of electric vehicles (EVs) has long been considered a major barrier in acceptance of electric mobility. We examined the nature of how range is experienced in an EV and whether variables from other adaptation contexts, notably stress, have explanatory power for inter‐individual differences in what we term comfortable range. Forty EVs were leased to a sample of users for a 6‐month field study. Qualitative and quantitative analyses of range experiences were performed, including regression analyses to examine the role of stress‐buffering personality traits and coping skills in comfortable range. Users appraised range as a resource to which they could successfully adapt and that satisfied most of their daily mobility needs. However, indicators were found that suggested suboptimal range utilisation. Stress‐buffering personality traits (control beliefs, ambiguity tolerance) and coping skills (subjective range competence, daily range practice) were found to play a substantial role in comfortable range. Hence, it may be possible to overcome perceived range barriers with the assistance of psychological interventions such as information, training, and interface design. Providing drivers with a reliable usable range may be more important than enhancing maximal range in an electric mobility system.  相似文献   
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