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   1869篇
  免费   17篇
各国政治   53篇
工人农民   200篇
世界政治   41篇
外交国际关系   43篇
法律   1355篇
中国政治   11篇
政治理论   176篇
综合类   7篇
  2021年   7篇
  2020年   20篇
  2019年   12篇
  2018年   96篇
  2017年   33篇
  2016年   103篇
  2015年   35篇
  2014年   20篇
  2013年   72篇
  2012年   141篇
  2011年   94篇
  2010年   17篇
  2009年   44篇
  2008年   28篇
  2007年   26篇
  2006年   31篇
  2005年   405篇
  2004年   118篇
  2003年   44篇
  2002年   28篇
  2001年   22篇
  1999年   14篇
  1997年   6篇
  1994年   4篇
  1993年   4篇
  1992年   22篇
  1991年   25篇
  1990年   32篇
  1989年   40篇
  1988年   29篇
  1987年   28篇
  1986年   31篇
  1985年   20篇
  1984年   18篇
  1983年   14篇
  1982年   8篇
  1979年   10篇
  1978年   10篇
  1977年   7篇
  1975年   15篇
  1974年   25篇
  1973年   14篇
  1972年   16篇
  1971年   19篇
  1970年   13篇
  1969年   7篇
  1968年   11篇
  1967年   9篇
  1966年   5篇
  1965年   5篇
排序方式: 共有1886条查询结果,搜索用时 15 毫秒
151.
152.
153.
For nearly five decades, the European Court of Justice (ECJ) has developed a decisively pro-European case law and has become the ??engine of integration??. Institutional explanations shed light on the Court??s room for manoevre. They have to be complemented by actor-centered explanations that shed light on the judges?? motives of action. The explanation offered by the following paper is unfolded in two steps. In the first one, the article describes idiosyncrasies of the European law discourse that already shaped the judges before they were appointed. The analysis of the idiosyncrasies corresponds to a scepticism towards the idea of national sovereignty, a belief in the necessity of creative and idealist, law-augmenting judges and a dominance of output-oriented legitimization strategies. In a second step, the article shows that in the sociological sense the ECJ judges constitute a group. While the individual judges share an understanding of the aims and functions of European law, the group develops its own identity and grants status to those who perform successful actions with respect to the common integration agenda. This explanation is more realistic than ??rational choice?? explanations which point to the direct and personal benefits that judges derive from their pro-European case law.  相似文献   
154.
155.
156.
In this article, we test: (a) the relation between school-based extracurricular participation and indicators of positive and negative development across a range of activity contexts, and (b) a mediation model linking activity participation, prosocial peers, and development. Extensive survey information was collected from a predominately White sample of middle class adolescents in 9th, 10th, and 12th grades. Extracurricular participation was related to more favorable academic, psychological, and behavioral adjustment; the pattern of findings differed by activity and outcome. In addition, we documented some support for the hypothesis that the link between extracurricular participation and positive adjustment is partly a function of associating with a prosocial peer group. Implications of these findings and suggestions for future research are presented. Assistant Professor of Human Development, Connecticut College. Received her PhD in 1999 from the University of Michigan. Major research interests include motivation, school engagement, extracurricular participation, and adolescent development. MacKeachie Collegiate Psychology Professor, University of Michigan. Received PhD in 1974 from the UCLA. Recent work focuses on ethnicity and the transitions from middle childhood to adolescence and into adulthood.  相似文献   
157.
The authors investigated the dimensions and mechanisms of belonging relevant to motivation and achievement among high school students representing 4 ethnic groups. Using survey data from 9th to 12th grade students (N = 5,494) attending 7 ethnically-diverse high schools, structural equation modeling was employed to explore, independently for each ethnic group, the relationships between students’ perceptions of their belonging (encompassing relationships with teachers and peers, extracurricular involvement, and perceived ethnic-based discrimination), motivation (efficacy beliefs and valuing school activities), and academic success. All 4 measures of belonging were significant for European-American and Latino students. However, friendship nominations were not significant for all groups, suggesting potential variability in perspectives across ethnic groups. The strength of the structural model postulating belonging as a mediator, including statistically significant indirect paths, supported the hypothesis that the belonging construct accounted for much of the relationship between student motivation and success across groups.Beverly Faircloth is a doctoral candidate of the University of North Carolina at Chapel Hill. Her research interests include the developmental and motivational processes that support adolescent school engagement in ethnically diverse settings.Jill Hamm is an Assistant Professor at the University of North Carolina at Chapel Hill. She received her Ph.D. from the University of Wisconsin-Madison in 1996. Her research interests are adolescents’ peer relations in ethnically diverse schools and classrooms.  相似文献   
158.
In the present longitudinal 3-wave study of 1274 adolescents and young adults, aged 12–24 at the 1st wave, it is examined whether youngsters from intact versus postdivorce families show long-term differences in internalizing and externalizing problems. Furthermore, possible differences in the development of this problem behavior between offspring from intact and postdivorce families are examined, i.e., possible differences in growth curves of internalizing and externalizing problems are investigated. Longitudinal multilevel analyses reveal long-term differences in internalizing and externalizing problems according to family structure. Adolescents and young adults growing up in postdivorce families display more internalizing and externalizing problem behavior than youngsters of intact families. The development of these 2 types of problem behavior does not differ by gender or family structure. That is, the shape of the growth curves of internalizing and externalizing problem behavior is similar for boys and girls and also for youngsters from intact and postdivorce families. Inge VanderValk is a Postdoc Researcher at the Department of Child and Adolescent Studies, Utrecht University, the Netherlands. She received her Ph.D. in 2004 from Utrecht University. Her major research interests include associations between adolescent adjustment and parental marital quality and parental divorce. Ed Spruijt is an Associate Professor at the University of Utrecht. He received his Ph.D. in 1983 from Utrecht University. His major research interests are the consequences of parental divorce and visitation arrangements on children. Martijn de Goede is an associate Professor at Utrecht University, Department of Methodology and Statistics. He received his Ph.D. in 1988 from Utrecht University. His major research interests are occupational and relational life courses of youngsters. Cora Maas is an Assistent Professor at Utrecht University, Department of Methodology and Statistics. She received her PH.D. in 1992 in Utrecht from Utrecht University. Her major interests are: multilevel analysis (theory and applications). Wim Meeus is full Professor of Adolescent Development at Utrecht University. He received his Ph.D. in 1984 from Utrecht University. His major research interests are personality, identity, and relationships in adolescence.  相似文献   
159.
Due to conceptualizations of autonomy as detachment and independence, research on the parenting–autonomy relationship in adolescence has yielded inconsistent results. In the present study, self-determination is proposed as an alternative way of tapping into the construct of autonomy. An integrated model of the relationships between perceived parenting and teaching styles, self-determination in 3 life-domains (school, social competence, and job-seeking behaviors), and specific adolescent outcomes, was investigated and confirmed. In 2 samples of mid-adolescents (N = 328 and N = 285), autonomy-supportive parenting was significantly related to self-determination in all life-domains. Autonomy-supportive teaching added significantly to the prediction of self-determination in the domains of school and job-seeking behaviors. Self-determination, in turn, was positively and specifically associated with measures of adjustment in the specific life-domains under investigation. Finally, in both studies, indications were found that self-determination acts as an intervening variable in the relation between the perceived interpersonal environment and adolescent adjustment. Doctoral student at the Center for Developmental Psychology at the Katholieke Universiteit Leuven, Belgium. His major research interests are parenting, psychological control, and identity development. Postdoctoral researcher at the Center for Motivation Psychology at the Katholieke Universiteit Leuven, Belgium. His major research interests are self-determination theory, motivation, and parenting.  相似文献   
160.
The purpose of this study was to increase the knowledge base of adolescent substance use by examining the influences of risk and protective factors for specific substance use, namely alcohol, cigarettes, and marijuana. Participants included 271 adolescents and their primary caregivers referred for mental health services across North Carolina. A series of hierarchical multiple regressions showed that the relative influences of risk and protective factors differed depending on the target substance in some cases. History of parental felony predicted use of all 3 substances, although the direction of association was substance specific. Parental behavioral control (how families express and maintain standards of behavior) was predictive only of cigarette and marijuana use, not alcohol use. The different links among risk factors, protective factors, and specific substance use are discussed, and recommendations for both mental health and substance use professionals are offered.She received her M.A. in Psychology from Wake Forest University and is currently a doctoral student in Clinical Psychology at the University of North Carolina at Greensboro. Her major research interests include developmental pathways to aggressive behavior among females.An evaluator for the North Carolina Department of Health and Human Services, her major research interests include system of care intervention programming.She received her PhD in Clinical Psychology from Purdue University. Her major research interests include developmental psychopathology and early intervention.His research interests focus on youth violence and youth involved with the juvenile justice system.She received her PhD in Clinical Psychology from the University of North Carolina at Greensboro. Her research interests focus on early intervention with young children.  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