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   15874篇
  免费   227篇
  国内免费   119篇
教育   10916篇
科学研究   2072篇
各国文化   119篇
体育   1388篇
综合类   11篇
文化理论   125篇
信息传播   1589篇
  2021年   114篇
  2020年   220篇
  2019年   321篇
  2018年   439篇
  2017年   385篇
  2016年   401篇
  2015年   256篇
  2014年   326篇
  2013年   2732篇
  2012年   310篇
  2011年   351篇
  2010年   254篇
  2009年   251篇
  2008年   262篇
  2007年   294篇
  2006年   285篇
  2005年   279篇
  2004年   262篇
  2003年   256篇
  2002年   243篇
  2001年   261篇
  2000年   275篇
  1999年   278篇
  1998年   147篇
  1997年   153篇
  1996年   190篇
  1995年   171篇
  1994年   134篇
  1993年   143篇
  1992年   220篇
  1991年   226篇
  1990年   236篇
  1989年   267篇
  1988年   214篇
  1987年   227篇
  1986年   221篇
  1985年   257篇
  1984年   225篇
  1983年   213篇
  1982年   177篇
  1981年   169篇
  1980年   158篇
  1979年   251篇
  1978年   195篇
  1977年   182篇
  1976年   149篇
  1975年   135篇
  1974年   153篇
  1973年   137篇
  1971年   121篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
951.
Behavioral/emotional difficulties in children are the first sign of mental health problems. These problems are however, heterogeneous. A domain that may identify homogenous subgroups is hypothalamic–pituitary–adrenal function. This study tested whether epigenetic regulation of glucocorticoid receptor gene could explain the co‐occurrence of anxiety problems in children with behavior problems. Four‐ to 16‐year‐old clinically referred children (= 241) were measured for psychiatric symptoms, methylation of target CpG sites in blood or saliva, and morning cortisol levels in those who gave blood. Increased methylation of promoter 1F CpG sites was associated with higher vulnerability to co‐occurring internalizing symptoms and morning cortisol. The results support increasing optimism that epigenetic regulation of key neuroendocrine systems might help explain hitherto unfathomable individual differences in susceptibility to psychiatric symptom profiles.  相似文献   
952.
953.
Job satisfaction based on familial and institutional factors was explored for 157 female counselor educators. Results indicate that female associate professors had lower levels of intrinsic rewards domain after controlling for institutional type. Parental responsibility and partnership status were equivocal, with significant interaction effects after controlling for Carnegie Classification.  相似文献   
954.
Workplaces are settings where power, knowledge and self are brought together in a complex social environment which includes various forms of struggle related to identity, agency, socio-cultural norms, political structures and functional practices. The purpose of this article is to uncover how formal and informal work-related learning processes influence the identity transformation of workers with low literacy and essential skills. Drawing on two recent Canadian data bases which serve as cases in this study, the position taken by the authors is that the organisational context can both facilitate and impede worker subjectivity. Various conditions, approaches to learning and training pathways are examined as they contribute to social cognitive and transformative learning theories.  相似文献   
955.
956.
Lifelong learning is receiving greater attention due to population aging in modern societies. Lifelong learning benefits individuals by supporting their physical, psychological, social, and economic well-being. However, older adults generally have lower motivation for learning than younger adults, and facilitating long-term participation in learning activities is still challenging. Previous studies mainly identified negative factors such as barriers and obstacles to individuals’ initial participation in lifelong learning programs. As such, less is known about positive factors that promote long-term participation. To address this gap, data were collected from 330 older adults who participated in the Osher Lifelong Learning Institute program in an urban community in the United States. Results from proportional odds ordinal logistic regression analysis demonstrated that gender, number of household members, income, religious affiliation, self-rated health, and number of courses taken were associated with satisfaction with the program. In hopes to promote true lifelong learning, possible explanations about the findings are explored and several recommendations for existing lifelong learning programs are derived in this study.  相似文献   
957.
Transactional distance has been defined as barriers to students’ engagement with learning in the online environment. This research updates Zhang’s (2003) scale of transactional distance, which quantified the extent of the barriers, in light of the massive changes in today’s web-based learning environment. The resulting revised scale of transactional distance (RSTD) is a parsimonious version with 12 elements (compared to 31 original) that measure the transactional distance between student and teacher, student and student, and student and content. The RSTD has excellent factorial validity and reliability, yields better fit statistics, and is easier and less time-consuming to apply. The transactional distance values are unique predictors of student satisfaction, which is correlated to learning and persistence (a major concern with massive open online courses). This information can form the basis for a systematic approach to improving the design of today’s contemporary open, flexible, distance education courses and thus serve as a valuable tool for researchers and educators alike.  相似文献   
958.
Abstract

The term “flipped” or “inverted” classroom includes a broad range of pedagogical innovations, and has recently received a significant amount of press. Although flipping an entire course might be a more extreme step than most are able to take, we discuss modular ideas for change that can be more easily implemented. This paper offers the perspective of four faculty members at different institutions who have all flipped material in statistics courses that were already highly interactive and activity-based. We share common pitfalls and core ideas that were found among diverse environments.  相似文献   
959.
960.
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