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   31845篇
  免费   1342篇
  国内免费   14篇
  2020年   321篇
  2019年   396篇
  2018年   607篇
  2017年   606篇
  2016年   640篇
  2015年   482篇
  2014年   531篇
  2013年   2493篇
  2012年   944篇
  2011年   989篇
  2010年   594篇
  2009年   536篇
  2008年   773篇
  2007年   809篇
  2006年   713篇
  2005年   644篇
  2004年   607篇
  2003年   569篇
  2002年   613篇
  2001年   1105篇
  2000年   1048篇
  1999年   776篇
  1998年   314篇
  1996年   310篇
  1992年   635篇
  1991年   627篇
  1990年   602篇
  1989年   582篇
  1988年   600篇
  1987年   541篇
  1986年   545篇
  1985年   549篇
  1984年   445篇
  1983年   377篇
  1982年   307篇
  1981年   284篇
  1979年   484篇
  1978年   336篇
  1977年   302篇
  1976年   282篇
  1975年   402篇
  1974年   503篇
  1973年   534篇
  1972年   427篇
  1971年   407篇
  1970年   392篇
  1969年   375篇
  1968年   501篇
  1967年   423篇
  1966年   412篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
31.
Using both cross-sectional and longitudinal data spanning a decade, this article analyzes how dietary behavior of household children and adults (N = 576 households) was affected by the Stanford Five-City Project (FCP). Tests of a three-part, cumulative model of bidirectional influences within the family, which conceptualizes household members as sources of influence on each other and subject to influence by an external agent, were supported. Children and adults were influenced by both each other and the FCP campaign in changing and maintaining health behaviors. This article demonstrates that public health campaigns can be made more effective if they conceptualize both children and adults as potential sources of influence. The long-term effectiveness of such efforts can be enhanced by encouraging families, as opposed to individuals, to change health behaviors.  相似文献   
32.
33.
34.
Pregnancy reflects a common experience for women in today's workforce, yet recent data suggest that some women scale back or leave the workforce following childbirth. Considering these effects on women's careers, researchers have sought to understand the underlying dynamics of these decisions. Here, we explore a paradoxical reason for weakened postpartum career attitudes: help that women receive during pregnancy. We integrate stereotype threat and benevolent sexism theories to explain how the effects of help on postpartum intentions to quit may be transmitted through reductions in work self-efficacy. In doing so, we consider the role of perceived impact—or the extent to which help interferes with versus enables women's perceived ability to continue performing their work role. Results of a weekly diary study of 105 pregnant employees suggest that work-interfering help led to decreased self-efficacy for work during the following week. Furthermore, there was an indirect effect of average help received at work during pregnancy on postpartum intentions to quit the workforce through reductions in work self-efficacy that was stronger insofar as help was work-interfering versus work-enabling. Taken together, our results highlight unintended negative consequences that occur when others provide ineffective support to women at work during pregnancy.  相似文献   
35.
36.
37.
This study examined information communication technologies and workplace friendship dynamics. Employees reported factors that influenced their initiation of friendship with a coworker and reported patterns and perceptions of communication with their workplace friend via different communication methods. Results indicated that personality, shared tasks, and perceived similarity are the most important factors to coworker friendship initiation, and the importance of physical proximity to workplace friendship is diminishing in the electronically connected workplace. Results confirm the primacy of face‐to‐face interaction for workplace friendship initiation and maintenance. E‐mail, phone, and texting were also central to communication among workplace friends. The amount of time spent telecommuting affected workplace friendship initiation and communication. Finally, generational differences were identified with respect to Internet‐based communication methods.  相似文献   
38.
39.
40.
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