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   169302篇
  免费   7637篇
  国内免费   157篇
  2021年   1489篇
  2020年   2770篇
  2019年   3426篇
  2018年   3417篇
  2017年   3871篇
  2016年   4561篇
  2015年   3914篇
  2014年   4783篇
  2013年   23393篇
  2012年   4364篇
  2011年   3384篇
  2010年   3768篇
  2009年   4716篇
  2008年   3648篇
  2007年   3152篇
  2006年   3807篇
  2005年   3838篇
  2004年   3360篇
  2003年   3002篇
  2002年   2793篇
  2001年   3061篇
  2000年   2900篇
  1999年   2954篇
  1998年   2796篇
  1997年   2639篇
  1996年   2562篇
  1995年   2388篇
  1994年   2356篇
  1993年   2313篇
  1992年   2500篇
  1991年   2356篇
  1990年   2176篇
  1989年   2106篇
  1988年   2050篇
  1987年   2093篇
  1986年   2094篇
  1985年   2325篇
  1984年   2427篇
  1983年   2205篇
  1982年   2259篇
  1981年   2258篇
  1980年   2099篇
  1979年   2141篇
  1978年   2110篇
  1977年   2115篇
  1976年   1871篇
  1975年   1984篇
  1974年   2017篇
  1973年   1936篇
  1972年   1523篇
排序方式: 共有10000条查询结果,搜索用时 296 毫秒
71.
Introduction     
Journal of International Migration and Integration -  相似文献   
72.
73.
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   
74.
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   
75.
76.
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   
77.
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   
78.
79.
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   
80.
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