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   1409篇
  免费   56篇
各国政治   66篇
工人农民   61篇
世界政治   123篇
外交国际关系   78篇
法律   699篇
中国共产党   1篇
中国政治   46篇
政治理论   382篇
综合类   9篇
  2021年   9篇
  2020年   21篇
  2019年   27篇
  2018年   50篇
  2017年   55篇
  2016年   43篇
  2015年   31篇
  2014年   50篇
  2013年   220篇
  2012年   42篇
  2011年   62篇
  2010年   38篇
  2009年   31篇
  2008年   55篇
  2007年   54篇
  2006年   64篇
  2005年   54篇
  2004年   54篇
  2003年   53篇
  2002年   32篇
  2001年   19篇
  2000年   17篇
  1999年   18篇
  1998年   16篇
  1997年   14篇
  1996年   11篇
  1995年   17篇
  1994年   21篇
  1993年   16篇
  1992年   12篇
  1991年   11篇
  1990年   9篇
  1989年   14篇
  1988年   15篇
  1987年   15篇
  1986年   7篇
  1985年   16篇
  1984年   9篇
  1983年   13篇
  1982年   12篇
  1981年   7篇
  1979年   10篇
  1978年   13篇
  1977年   9篇
  1976年   11篇
  1975年   13篇
  1974年   11篇
  1973年   8篇
  1972年   11篇
  1967年   8篇
排序方式: 共有1465条查询结果,搜索用时 15 毫秒
41.
Efficiency approaches to the question of whether population size matters to optimal local government have proved largely inconclusive. However, recent exploratory empirical work employing an effectiveness approach – as proxied by citizen satisfaction survey data – offers a promising way forward. The present paper seeks to build upon an earlier cross-sectional analysis of Victorian local government by employing longitudinal data over a three-year period – 2008 to 2010 – for Victorian local authorities. The greater depth of data confirmed the positive associations with population density but suggests that negative linear relationships dominate over parabolic associations for population size. This result underlines the need for the collection of more local government citizen satisfaction data by Australian local government systems, given its potentially fruitful application in tackling contentious questions in contemporary local government policy debates.  相似文献   
42.
43.
44.
45.
46.
Adolescent romantic relationships have the potential to affect psychological functioning well into adulthood. This study assessed adolescent romantic relationship qualities as long-term predictors of psychological functioning utilizing a longitudinal multi-method, multi-informant study of 80 participants (59% female; 54% Caucasian, 35% African American, 11% mixed or other race) assessed at age 17 along with their romantic partners and at ages 25–27. Controlling for gender, family income, and baseline mental health, partner-reported hostile conflict at age 17 predicted relative increases in internalizing behaviors from age 17 to 27. In contrast, observed teen support with their partner during a help-seeking task at age 17 predicted relative decreases in externalizing behaviors over time. The results are interpreted as suggesting qualities that may help determine whether adolescent romances have positive vs. negative long-term psychological health implications.  相似文献   
47.
This paper examines the long‐term effect of project‐based housing assistance—public housing and private assisted housing—on work, earnings, and welfare receipt. We use the Panel Study of Income Dynamics–Assisted Housing Database to identify women ever living in project‐based assisted housing and to create comparison groups using propensity scores. Analyses show no evidence that moving into this type of assisted housing is associated with sustained reductions in employment rates, work hours, or earnings. Although welfare rates decline, they remain higher for assisted housing recipients compared with nonrecipients. Overall, these findings align with those of recent experimental and nonexperimental studies that include other forms of housing assistance and cover different time periods. © 2009 by the Association for Public Policy Analysis and Management.  相似文献   
48.
Student engagement is an important contributor to school success, yet high school students routinely describe themselves as disengaged. Identifying factors that alter (increase) engagement is a key aspect of improving support for student achievement. This study investigated students’ perceptions of autonomy, teacher connection, and academic competence as predictors of changes in student engagement within the classroom from the start to the end of a course. Participants were 578 (58% female) diverse (67.8% White, 25.2% African American, 5.1% Hispanic, 1.2% Asian American) high school students from 34 classrooms who provided questionnaire data both at the start and the end of a single course. Novel results from a cross-lagged model demonstrated that students who perceived their classrooms as allowing and encouraging their own autonomy in the first few weeks increased their engagement throughout the course, rather than the typical decline in engagement that was demonstrated by students in other classrooms. This finding is unique in that it extended to both students’ perceptions of engagement and observations of student engagement, suggesting a fairly robust pattern. The pertinence of this finding to adolescent developmental needs and its relationship to educational practice is discussed.  相似文献   
49.
Journal of Youth and Adolescence - Adolescents experience high rates of mental health problems but are reluctant to seek professional help. Parents play an integral role in the help seeking process...  相似文献   
50.
Are internalizing and externalizing behavior problems interrelated via mutually reinforcing relationships (with each behavior leading to increases over time in levels of the other behavior) or mutually suppressing relationships (with each behavior leading to decreases over time in levels of the other behavior)? Past research on the directionality of these relationships has led to ambiguous results, particularly in adolescence. Furthermore, the extent to which prior results will generalize to adolescents with low levels of cognitive abilities remains unknown. This second limit is particularly important, given that these adolescents are known to present higher levels of externalizing and internalizing behaviors than their peers with average-to-high levels of cognitive abilities, and that the mechanisms involved in the reciprocal relationships between these two types of behaviors may differ across both populations. This study examines the directionality of the longitudinal relationships between externalizing and internalizing behavior problems as rated by teachers across three measurement waves (corresponding to Grades 8–10) in matched samples of 138 adolescents (34.78?% girls) with low levels of cognitive abilities and 556 adolescents (44.88?% girls) with average-to-high levels of cognitive abilities. The results showed that the measurement structure was fully equivalent across time periods and groups of adolescents, revealing high levels of developmental stability in both types of problems, and moderately high levels of cross-sectional associations. Levels of both internalizing and externalizing behaviors were higher among adolescents with low levels of cognitive abilities relative to those with average-to-high levels of cognitive abilities. Finally, the predictive analyses revealed negative reciprocal longitudinal relationships (i.e., mutually suppressing relationships) between externalizing and internalizing problems, a result that was replicated within samples of adolescents with low, and average-to-high levels of cognitive ability.  相似文献   
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