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   35280篇
  免费   1276篇
  国内免费   11篇
  2018年   489篇
  2017年   543篇
  2016年   635篇
  2015年   435篇
  2014年   549篇
  2013年   2901篇
  2012年   923篇
  2011年   1029篇
  2010年   705篇
  2009年   650篇
  2008年   986篇
  2007年   961篇
  2006年   917篇
  2005年   819篇
  2004年   775篇
  2003年   790篇
  2002年   808篇
  2001年   787篇
  2000年   809篇
  1999年   643篇
  1998年   427篇
  1997年   425篇
  1996年   416篇
  1995年   398篇
  1992年   618篇
  1991年   574篇
  1990年   564篇
  1989年   533篇
  1988年   553篇
  1987年   529篇
  1986年   571篇
  1985年   557篇
  1984年   512篇
  1983年   482篇
  1982年   412篇
  1981年   430篇
  1979年   520篇
  1978年   472篇
  1977年   427篇
  1976年   422篇
  1975年   465篇
  1974年   562篇
  1973年   583篇
  1972年   435篇
  1971年   432篇
  1970年   394篇
  1969年   423篇
  1968年   496篇
  1967年   439篇
  1966年   462篇
排序方式: 共有10000条查询结果,搜索用时 93 毫秒
21.
Two studies tested the hypothesis that certain positive emotions speed recovery from the cardiovascular sequelae of negative emotions. In Study 1, 60 subjects (Ss) viewed an initial fear-eliciting film, and were randomly assigned to view a secondary film that elicited: (a) contentment; (b) amusement; (c) neutrality; or (d) sadness. Compared to Ss who viewed the neutral and sad secondary films, those who viewed the positive films exhibited more rapid returns to pre-film levels of cardiovascular activation. In Study 2, 72 Ss viewed a film known to elicit sadness. Fifty Ss spontaneously smiled at least once while viewing this film. Compared to Ss who did not smile, those who smiled exhibited more rapid returns to pre-film levels of cardiovascular activation. We discuss these findings in terms of emotion theory and possible health-promoting functions of positive emotions.  相似文献   
22.
23.
24.
25.
26.
27.
In this study, we explored the structure of pupils’ creativity in primary education following the Amusement Park Theory, by investigating undiscovered linkages between the domains of writing, mathematics, and drawing. More specifically, we examined: (a) whether some domains and general thematic areas are more closely related to each other than to others, (b) whether literacy and mathematical ability are specific underlying traits of creativity in writing and mathematics, respectively, and (c) whether intelligence and divergent thinking are related to creativity in all domains. The sample consisted of 331 Dutch 4th grade pupils. For each research question, a model was analyzed using structural equation modeling. We found creativity in mathematics and creativity in writing to be most similar, followed by creativity in mathematics and creativity in drawing, with creativity in writing and creativity in drawing being least similar. Additionally, we found evidence for several underlying traits (i.e., literacy ability and mathematical ability) and initial requirements of creativity (i.e., intelligence and divergent thinking), none of which were important for creativity in only one domain, and of which only intelligence was important for creativity in all domains. Herewith, our study provides insights regarding the complexity of the structure of creativity in primary education.  相似文献   
28.
29.
The authors used recursive partitioning methods to identify combinations of baseline characteristics that predict 2-year physical activity success in each of 3 physical activity interventions delivered in the multisite Activity Counseling Trial. The sample consisted of 874 initially sedentary primary care patients, ages 35-75 years, who were at risk for cardiovascular disease. Predictors of 2-year success were specific to each intervention and represented a range of domains, including physiological, demographic, psychosocial, health-related, and environmental variables. The results indicate how specific patient subgroups (e.g., obese, unfit individuals; high-income individuals in stable health) may respond differently to varying levels and amounts of professional assistance and support. The methods used provide a practical first step toward identifying clinically meaningful patient subgroups for further systematic investigation.  相似文献   
30.
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