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   20680篇
  免费   380篇
  国内免费   16篇
管理学   2598篇
民族学   108篇
人才学   1篇
人口学   1788篇
丛书文集   174篇
理论方法论   1855篇
综合类   821篇
社会学   10287篇
统计学   3444篇
  2023年   114篇
  2021年   135篇
  2020年   315篇
  2019年   409篇
  2018年   478篇
  2017年   700篇
  2016年   478篇
  2015年   406篇
  2014年   467篇
  2013年   3455篇
  2012年   698篇
  2011年   653篇
  2010年   558篇
  2009年   479篇
  2008年   599篇
  2007年   616篇
  2006年   587篇
  2005年   503篇
  2004年   413篇
  2003年   364篇
  2002年   405篇
  2001年   499篇
  2000年   423篇
  1999年   411篇
  1998年   316篇
  1997年   286篇
  1996年   271篇
  1995年   271篇
  1994年   237篇
  1993年   279篇
  1992年   313篇
  1991年   301篇
  1990年   302篇
  1989年   259篇
  1988年   266篇
  1987年   294篇
  1986年   238篇
  1985年   232篇
  1984年   282篇
  1983年   236篇
  1982年   232篇
  1981年   180篇
  1980年   192篇
  1979年   222篇
  1978年   162篇
  1977年   155篇
  1976年   157篇
  1975年   183篇
  1974年   148篇
  1972年   116篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
61.
The extent to which 4‐month attentional regulation during an infant‐mother still‐face situation and 12‐month attachment security during the Strange Situation predicted rates of compliance and noncompliance during a cleanup task at 36 months was examined longitudinally in 70 infant‐mother dyads. Hierarchical multiple regression analyses indicated that infants who showed more attentional regulation during the still‐face situation with mothers later showed a higher rate of committed compliance and a lower rate of situational compliance during cleanup with mothers. Furthermore, lower levels of attentional regulation were later associated with higher rates of assertive behavior, but only for infants in an insecure attachment relationship.  相似文献   
62.
63.
This study concerned the immunological correlates of stress and work. Self reported stress, emotional state, ego-strength, and defensiveness were examined in relation to measures of cellular immunity (T-cell response to Con A and number of T4 and T8 cells) and humoral immunity (concentrations of immunoglobulins and complement components in plasma) in a group of 96 Norwegian female bank employees. The analyses showed that workload, the stress factor with the highest group mean, was associated with number of T-cells, while strain due to body posture during work was related to concentrations of IgM and C3. Further, depression was significantly correlated with IgM concentration and T-cell number, and anxiety with C3 concentration. T-cell activity was the immunological parameter most consistently associated with psychological well-being, showing positive correlations with defensiveness and ego-strength and negative correlations with anxiety and depression. In conclusion, T-cell number and concentrations of IgM and C3 were sensitive to both work-related stress experience and emotional distress. Coping abilities, indicated by the MMPI Ego-strength scale and emotional distress, were reflected in T-cell activity; insufficient coping was associated with low T-cell activity.  相似文献   
64.
The physical and psychological effects of Turner's Syndrome, a female sex chromosome abnormality, briefly are described. Principles for helping women master the special challenges posed by the disorder are discussed. The authors argue that women with TS must take control of defining their identities and potential in order to attain full status within society.  相似文献   
65.
66.
Mothers' time‐use patterns were compared in families in which infants spent more than 30 hours per week in child care (In‐Care group; n= 143) versus 0 hours per week (At‐Home group; n= 183) from birth to 6 months of age. In‐Care group mothers spent about 12 fewer hours per week interacting with their infants, for about 32% less time; fathers of these infants were more involved in caregiving. The groups did not differ in the quality of mother‐infant interaction. In the In‐Care group, quantity of interaction was related to greater separation anxiety and concerns about effects of maternal employment. Time‐use data were not related to child outcomes at 15 months of age. Results suggest that the effect of extensive time spent apart on the quantity and quality of mother‐infant interaction may be smaller than anticipated.  相似文献   
67.
This study examined the unique and interactive roles of mother and teacher depressive symptoms in child adjustment in 277 African American single mother‐headed families, as well as whether the associations differed depending on the age and gender of the child. Findings revealed a significant association between maternal depressive symptoms and child depressive symptoms in girls, but not boys. Moreover, the combination of higher levels of both mother and teacher depressive symptoms was associated with the highest level of child depressive symptoms and, for younger children, externalizing symptoms. The importance of considering the multiple social contexts in which children interact is discussed.  相似文献   
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