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   34372篇
  免费   1399篇
  国内免费   13篇
  2019年   427篇
  2018年   611篇
  2017年   646篇
  2016年   675篇
  2015年   518篇
  2014年   613篇
  2013年   3172篇
  2012年   1071篇
  2011年   1119篇
  2010年   686篇
  2009年   693篇
  2008年   969篇
  2007年   983篇
  2006年   886篇
  2005年   877篇
  2004年   857篇
  2003年   819篇
  2002年   876篇
  2001年   962篇
  2000年   895篇
  1999年   737篇
  1998年   435篇
  1997年   402篇
  1996年   377篇
  1995年   368篇
  1993年   354篇
  1992年   612篇
  1991年   585篇
  1990年   568篇
  1989年   523篇
  1988年   544篇
  1987年   505篇
  1986年   507篇
  1985年   522篇
  1984年   486篇
  1983年   459篇
  1982年   394篇
  1981年   377篇
  1979年   479篇
  1978年   435篇
  1977年   369篇
  1976年   364篇
  1975年   420篇
  1974年   506篇
  1973年   477篇
  1972年   362篇
  1971年   353篇
  1970年   345篇
  1968年   416篇
  1967年   362篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
23.
24.
This study examined the influence of various group diversity dimensions on collaborative creativity related to the healthcare system. Research findings on the association between diversity and brainstorming performance has been mixed. Diversity that increases cognitive stimulation or promotes elaboration has been shown to increase group performance. Participants exchanged ideas, replied, and elaborated using an electronic discussion board in an asynchronous fashion in groups of five over a period of 4 weeks. The groups varied in diversity of ethnicity, gender, age, and political orientation, but participants were not made aware of this diversity. Age and gender diversity were related to lower levels of replying to ideas and lower idea novelty but political diversity was related to increased replies and novelty. If a topic engages people with different perspectives to actively respond to others’ ideas, this can increase the creative potential of idea sharing in groups. Political or value-based diversity has the potential for creative solutions if the other participants’ political or value-based identities are not made salient.  相似文献   
25.
26.
27.
28.
29.
Evaluated the effect of varied physician affect on subject recall, anxiety, and perceptions in a simulated tense and ambiguous medical situation. Forty women at risk for breast cancer viewed videotapes of an oncologist presenting--with either worried or nonworried affect--mammogram results. Although the mammogram results and the oncologist were the same in both presentation, analyses indicated that, compared to the women receiving the results from a nonworried physician, the women receiving the results from a worried physician recalled significantly less information, perceived the clinical situation as significantly more severe, reported significantly higher levels of state anxiety, and had significantly higher pulse rates. These results suggest that physician affect plays a critical role in patient reaction to medical information. Implications for compliance research, patient satisfaction, and physician training are discussed.  相似文献   
30.
The ability of two species of tits to remember the location and/or features of an object was tested in a delayed-matching-to-sample procedure. Three values of retention interval between presentation of the sample stimulus and the choice--30 sec, 5 min, and 15 min--were used. Both species performed at above-chance level at all retention intervals, and there was no significant decline in accuracy with increasing interval. A pool of 100 stimulus objects was used, but the results of control trials indicated that the birds responded primarily to location rather than stimulus features of the object itseif. Although the food-storing marsh tit tended to perform at a higher level than the non-storing great tit, the only significant difference between the species was in the first 50 trials of the first treatment, when the birds were acquiring the task. The results are discussed in relation to the hypothesized special memory capacity of food-storing birds.  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