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   176045篇
  免费   7837篇
  国内免费   163篇
  2021年   1527篇
  2020年   2810篇
  2019年   3468篇
  2018年   3656篇
  2017年   4080篇
  2016年   4731篇
  2015年   3957篇
  2014年   4831篇
  2013年   23546篇
  2012年   4885篇
  2011年   3979篇
  2010年   4029篇
  2009年   4845篇
  2008年   4162篇
  2007年   3766篇
  2006年   4249篇
  2005年   4184篇
  2004年   3660篇
  2003年   3279篇
  2002年   3094篇
  2001年   3385篇
  2000年   3220篇
  1999年   3225篇
  1998年   2829篇
  1997年   2668篇
  1996年   2568篇
  1995年   2440篇
  1994年   2382篇
  1993年   2339篇
  1992年   2691篇
  1991年   2481篇
  1990年   2356篇
  1989年   2212篇
  1988年   2206篇
  1987年   2196篇
  1986年   2172篇
  1985年   2353篇
  1984年   2476篇
  1983年   2273篇
  1982年   2274篇
  1981年   2269篇
  1980年   2132篇
  1979年   2221篇
  1978年   2163篇
  1977年   2118篇
  1976年   1912篇
  1975年   2007篇
  1974年   2049篇
  1973年   1963篇
  1972年   1505篇
排序方式: 共有10000条查询结果,搜索用时 328 毫秒
71.
72.
Introduction     
Journal of International Migration and Integration -  相似文献   
73.
74.
Rowbottom  Darrell P. 《Synthese》2021,198(3):2153-2167
Synthese - First, I identify a methodological thesis associated with scientific realism. This has different variants, but each concerns the reliability of scientific methods in connection with...  相似文献   
75.
The authors tested effects of a 10-week group cognitive-behavioral stress management intervention among 100 women newly treated for Stage 0-II breast cancer. The intervention reduced prevalence of moderate depression (which remained relatively stable in the control condition) but did not affect other measures of emotional distress. The intervention also increased participants' reports that having breast cancer had made positive contributions to their lives, and it increased generalized optimism. Both remained significantly elevated at a 3-month follow-up of the intervention. Further analysis revealed that the intervention had its greatest impact on these 2 variables among women who were lowest in optimism at baseline. Discussion centers on the importance of examining positive responses to traumatic events--growth, appreciation of life, shift in priorities, and positive affect-as well as negative responses.  相似文献   
76.
77.
Children diagnosed with autism spectrum disorder (ASD) often exhibit stereotypy, which can be socially stigmatizing, interfere with daily living skills, and affect skill acquisition. We compared differential reinforcement of alternative behavior (DRA) and differential reinforcement of other behavior (DRO) when neither procedure included response blocking or interruption for (a) reducing stereotypy, (b) increasing task engagement, and (c) increasing task completion. DRA contingencies yielded superior outcomes across each measure when evaluated with 3 individuals with autism spectrum disorder.  相似文献   
78.
This article integrates existing theoretical perspectives on message content and negotiator motivation to formulate a comprehensive definitional model of the interrelationships among communication behaviors in crisis negotiation. A sample of 189 nuclear dialogue spans were transcribed from 9 resolved cases of hostage negotiation and each utterance coded at the level of thought units across 41 behavioral variables. Results of a nonmetric, multidimensional scaling solution provided clear support for the hypothesized cylindrical structure of communication behavior, revealing 3 dominant levels of suspect‐negotiator interaction (Avoidance, Distributive, Integrative). At each level of the structure, interactions were found to modulate around 3 thematic styles of communication (Identity, Instrumental, Relational), which reflected the underlying motivational emphasis of individuals' dialogue. Finally, the intensity of communication was found to play a polarizing role in the cylinder, with intense, functionally discrete behaviors occurring toward the boundary of the structure.  相似文献   
79.
80.
There is substantial evidence of detrimental psychological sequelae following disasters, including terrorist attacks. The effect of these events on extreme responses such as suicide, however, is unclear. We tested competing hypotheses about such effects by employing autoregressive integrated moving average techniques to model the impact of September 11 and the Oklahoma City bombing on monthly suicide counts at the local, state, and national level. Unlike prior studies that provided conflicting evidence, rigorous time series techniques revealed no support for an increase or decrease in suicides following these events. We conclude that while terrorist attacks produce subsequent psychological morbidity and may affect self and collective efficacy well beyond their immediate impact, these effects are not strong enough to influence levels of suicide mortality.  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