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   56402篇
  免费   2283篇
  国内免费   30篇
  2020年   669篇
  2019年   825篇
  2018年   1166篇
  2017年   1167篇
  2016年   1263篇
  2015年   851篇
  2014年   1010篇
  2013年   4987篇
  2012年   1845篇
  2011年   2042篇
  2010年   1197篇
  2009年   1245篇
  2008年   1822篇
  2007年   1815篇
  2006年   1587篇
  2005年   1450篇
  2004年   1434篇
  2003年   1320篇
  2002年   1328篇
  2001年   1839篇
  2000年   1724篇
  1999年   1350篇
  1998年   747篇
  1997年   624篇
  1996年   576篇
  1995年   575篇
  1994年   563篇
  1993年   555篇
  1992年   1064篇
  1991年   986篇
  1990年   980篇
  1989年   873篇
  1988年   827篇
  1987年   831篇
  1986年   830篇
  1985年   886篇
  1984年   694篇
  1983年   618篇
  1982年   508篇
  1979年   687篇
  1978年   525篇
  1976年   469篇
  1975年   600篇
  1974年   632篇
  1973年   606篇
  1972年   548篇
  1971年   479篇
  1968年   545篇
  1967年   543篇
  1966年   477篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
Although a great deal of research has been conducted on the relationship between social support and physical health, the contribution of personality characteristics to this relationship has rarely been assessed. Structural equation modeling was employed to derive and test a model of the direct and indirect relationships between personality characteristics, social network size, the perceived availability of support, socially supportive behaviors, and perceived physical health with a sample of Pennsylvania adults. Significant paths indicate that individuals who perceive themselves as affiliative and as help seekers and help givers report larger social networks, receive more socially supportive behaviors, and perceive that more support is available to them. The perception that support is available shared a direct relationship with perceived physical health. The utility of including multiple measures of social support and personality characteristics related to receiving support in investigations of the relationship between social support and physical health is discussed.  相似文献   
62.
Suicides among older adults in the United States and Canada in the last decade have accounted for an increasing share of all suicides. In both countries the use of firearms among older adults has steadily increased. Despite these trends, little is known about the extent to which crisis centers are prepared to prevent elder suicide. A survey of AAS-listed crisis prevention centers examined the training, knowledge, and current practices relevant to elder suicide among personnel in 321 crisis prevention centers in both countries. Results revealed insufficient training, a lack of familiarity with recent suicide trends, and limited outreach to older adults.  相似文献   
63.
64.
65.
66.
Informed by theory and research on attributions and narrative persuasion, we compared the effectiveness of narrative and nonnarrative messages in changing attributions of responsibility for causes and solutions related to obesity in the United States. We randomly assigned 500 adults to view one of three messages (narrative, evidence, and a hybrid of the two) emphasizing environmental causes of obesity, or a no‐exposure control condition. The narrative condition increased the belief that societal actors (government, employers) are responsible for addressing obesity, but only among liberals. This pattern of results was partially explained by the success of the narrative condition in reducing reactive counterarguing, relative to the evidence condition, among liberals. We conclude with theoretical and practical implications.  相似文献   
67.
68.
69.
70.
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