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   68986篇
  免费   2852篇
  国内免费   23篇
  2020年   769篇
  2019年   964篇
  2018年   1328篇
  2017年   1318篇
  2016年   1417篇
  2015年   1005篇
  2014年   1249篇
  2013年   5901篇
  2012年   2281篇
  2011年   2310篇
  2010年   1393篇
  2009年   1436篇
  2008年   1996篇
  2007年   1984篇
  2006年   1840篇
  2005年   1530篇
  2004年   1590篇
  2003年   1502篇
  2002年   1438篇
  2001年   2229篇
  2000年   2160篇
  1999年   1581篇
  1998年   785篇
  1997年   664篇
  1996年   746篇
  1995年   673篇
  1994年   668篇
  1993年   638篇
  1992年   1321篇
  1991年   1241篇
  1990年   1241篇
  1989年   1181篇
  1988年   1147篇
  1987年   1047篇
  1986年   1054篇
  1985年   1105篇
  1984年   895篇
  1983年   801篇
  1979年   949篇
  1978年   744篇
  1975年   780篇
  1974年   893篇
  1973年   926篇
  1972年   802篇
  1971年   745篇
  1970年   622篇
  1969年   650篇
  1968年   817篇
  1967年   742篇
  1966年   688篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
43.
44.
45.
46.
Gay marriages (as such) are not as yet allowed anywhere but the demand for them is increasing. Most countries take a liberal attitude towards marriage: few obstacles are put in its way. But objections to gay marriages continue to be raised. These objections are refuted and the case for gay marriage is assessed through the prism of various forms of liberalism. The normative argument for allowing gay marriage is shown to be both strong and consistent with many of the values upheld by the opponents of such unions.  相似文献   
47.
We test the emotion-response congruency hypothesis, which predicts that the consequences of socially sharing one's negative emotions depend on the congruency between the shared emotion and the response that is obtained from the interaction partner. Experiment 1a shows that the response that people prefer is dependent on the specific emotion shared. Experiment 1b, however, reveals that the responses that interaction partners provide do not differ across emotions. Yet, and crucially, Experiment 2 shows that the outcomes of sharing are affected by the congruency between the response that people receive and the emotion they share, thus supporting the emotion-response congruency hypothesis. Copyright © 2006 John Wiley & Sons, Ltd.  相似文献   
48.
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   
49.
50.
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   
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