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   215695篇
  免费   9047篇
  国内免费   170篇
  224912篇
  2020年   2932篇
  2019年   3610篇
  2018年   4275篇
  2017年   4604篇
  2016年   5214篇
  2015年   4069篇
  2014年   4969篇
  2013年   24170篇
  2012年   6280篇
  2011年   5801篇
  2010年   4744篇
  2009年   5247篇
  2008年   5724篇
  2007年   5389篇
  2006年   5498篇
  2005年   5308篇
  2004年   4785篇
  2003年   4378篇
  2002年   4186篇
  2001年   5161篇
  2000年   4843篇
  1999年   4303篇
  1998年   3057篇
  1997年   2854篇
  1996年   2748篇
  1995年   2584篇
  1994年   2533篇
  1993年   2480篇
  1992年   3540篇
  1991年   3331篇
  1990年   3229篇
  1989年   3040篇
  1988年   3000篇
  1987年   2925篇
  1986年   2960篇
  1985年   3192篇
  1984年   3064篇
  1983年   2745篇
  1982年   2547篇
  1981年   2509篇
  1980年   2363篇
  1979年   2883篇
  1978年   2532篇
  1977年   2418篇
  1976年   2279篇
  1975年   2562篇
  1974年   2714篇
  1973年   2671篇
  1972年   2154篇
  1971年   2056篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
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   
42.
43.
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   
44.
45.
46.
47.
48.
49.
Introduction     
Journal of International Migration and Integration -  相似文献   
50.
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