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   24087篇
  免费   552篇
  国内免费   5篇
各国政治   862篇
工人农民   1667篇
世界政治   1241篇
外交国际关系   813篇
法律   14945篇
中国共产党   6篇
中国政治   171篇
政治理论   4765篇
综合类   174篇
  2020年   222篇
  2019年   271篇
  2018年   1531篇
  2017年   1506篇
  2016年   1353篇
  2015年   351篇
  2014年   312篇
  2013年   1496篇
  2012年   618篇
  2011年   1347篇
  2010年   1329篇
  2009年   946篇
  2008年   1194篇
  2007年   1177篇
  2006年   520篇
  2005年   526篇
  2004年   625篇
  2003年   626篇
  2002年   445篇
  2001年   667篇
  2000年   542篇
  1999年   478篇
  1998年   252篇
  1997年   180篇
  1996年   220篇
  1995年   198篇
  1994年   218篇
  1993年   199篇
  1992年   322篇
  1991年   355篇
  1990年   340篇
  1989年   281篇
  1988年   321篇
  1987年   273篇
  1986年   318篇
  1985年   282篇
  1984年   239篇
  1983年   226篇
  1982年   181篇
  1981年   195篇
  1980年   127篇
  1979年   177篇
  1978年   129篇
  1977年   114篇
  1976年   96篇
  1975年   123篇
  1974年   132篇
  1973年   104篇
  1972年   100篇
  1969年   99篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
962.
Youth’s career attainment is associated with socioeconomic background, but may also be related to their beliefs about causes of success. Relationships between 17-year-olds’ socioeconomic status (SES) and causal beliefs about success, and whether these beliefs predict career attainment after completing a vocational or university degree were examined using data from the German Socio-Economic Panel Study (n?=?997, 48.5% female). Youth with higher SES parents and those who attended higher levels of high schools were less likely to believe that success in society is due to external causes, but SES was unrelated to the belief that success is due to personal merit or ability. Youth who believe that success is due to external causes attained lower income, occupational prestige, and job autonomy, and slower increases in income over time. There were also significant indirect effects of youth’s parents’ SES and their own high school levels on career attainment through such external causal beliefs; merit beliefs, by contrast, were largely unrelated to career attainment. These results suggest that beliefs about external causes of success may uniquely contribute to the transmission and maintenance of SES across generations and over time.  相似文献   
963.
The transition to high school is disruptive for many adolescents, yet little is known about the supportive relational processes that might attenuate the challenges students face as they move from middle to high school, particularly for students from more diverse backgrounds. Identifying potential buffers that protect youth across this critical educational transition is important for informing more effective support services for youth. In this study, we investigated how personal characteristics (gender, nativity, parent education level) and changes in support from family, friends, and school influenced changes in socioemotional adjustment and academic outcomes across the transition from middle to high school. The data were drawn from 252 students (50% females, 85% Latina/o). The results revealed declines in students’ grades and increases in depressive symptoms and feelings of loneliness across the high school transition, with key variation by student nativity and gender. Additionally, stable/increasing friend support and school belonging were both linked to less socioemotional disruptions as students moved from middle to high school. Increasing/stable school belonging was also linked to increases in school engagement across the high school transition. These findings suggest that when high school transitions disrupt supportive relationships with important others in adolescents’ lives, adolescents’ socioemotional well-being and, to a lesser extent, their academic engagement are also compromised. Thus, in designing transition support activities, particularly for schools serving more low-income and race/ethnic minority youth, such efforts should strive to acclimate new high school students by providing inclusive, caring environments and positive connections with educators and peers.  相似文献   
964.
Internal locus of control is associated with academic success and indicators of wellbeing in youth. There is however less understanding regarding the role of locus of control in shaping the transition from school to work beyond the more widely studied predictors of socioeconomic background and academic attainment. Guided by a socio-ecological model of agency, the current study examines to which extent internal locus of control, understood as an indicator of individual agency, can compensate for a lack of socioeconomic resources by moderating the association between parental disadvantage and difficulties in the transition from school to work. We draw on data collected from a longitudinal nationally representative cohort of 15,770 English youth (48% female) born in 1989/90, following their lives from age 14 to 20. The results suggest that the influence of agency is limited to situations where socioeconomic risk is not overpowering. While internal locus of control may help to compensate for background disadvantage regarding avoidance of economic inactivity and unemployment to some extent, it does not provide protection against long-term inactivity, i.e. more than 6 months spent not in education, employment or training.  相似文献   
965.
966.
967.
968.
969.
970.
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