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   201865篇
  免费   8819篇
  国内免费   157篇
  2020年   2812篇
  2019年   3476篇
  2018年   3855篇
  2017年   4271篇
  2016年   4841篇
  2015年   3982篇
  2014年   4851篇
  2013年   23683篇
  2012年   5429篇
  2011年   4856篇
  2010年   4345篇
  2009年   4992篇
  2008年   4943篇
  2007年   4591篇
  2006年   4875篇
  2005年   4741篇
  2004年   4215篇
  2003年   3811篇
  2002年   3681篇
  2001年   4651篇
  2000年   4490篇
  1999年   4039篇
  1998年   2963篇
  1997年   2798篇
  1996年   2709篇
  1995年   2501篇
  1994年   2482篇
  1993年   2440篇
  1992年   3360篇
  1991年   3163篇
  1990年   3025篇
  1989年   2852篇
  1988年   2816篇
  1987年   2797篇
  1986年   2838篇
  1985年   3027篇
  1984年   2961篇
  1983年   2664篇
  1982年   2506篇
  1981年   2487篇
  1980年   2321篇
  1979年   2770篇
  1978年   2439篇
  1977年   2341篇
  1976年   2173篇
  1975年   2457篇
  1974年   2565篇
  1973年   2520篇
  1972年   2098篇
  1968年   1968篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
62.
63.
64.
Introduction     
Journal of International Migration and Integration -  相似文献   
65.
66.
This paper summarizes three lines of research that are motivated by the practical problem of helping users find information from external data sources, most notably computers. The application areas include information retrieval, text categorization, and question answering. A common theme in these applications is that practical information access problems can be solved by analyzing the statistical properties of words in large volumes of real world texts. The same statistical properties constrain human performance, thus we believe that solutions to practical information access problems can shed light on human knowledge representation and reasoning.  相似文献   
67.
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   
68.
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   
69.
70.
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   
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