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   30761篇
  免费   960篇
  国内免费   5篇
各国政治   1304篇
工人农民   1241篇
世界政治   2364篇
外交国际关系   1084篇
法律   18838篇
中国共产党   8篇
中国政治   215篇
政治理论   6346篇
综合类   326篇
  2020年   408篇
  2019年   479篇
  2018年   602篇
  2017年   719篇
  2016年   740篇
  2015年   529篇
  2014年   586篇
  2013年   2975篇
  2012年   782篇
  2011年   819篇
  2010年   670篇
  2009年   725篇
  2008年   842篇
  2007年   909篇
  2006年   876篇
  2005年   782篇
  2004年   790篇
  2003年   849篇
  2002年   736篇
  2001年   1187篇
  2000年   1052篇
  1999年   884篇
  1998年   504篇
  1997年   387篇
  1996年   377篇
  1995年   347篇
  1994年   424篇
  1993年   390篇
  1992年   589篇
  1991年   650篇
  1990年   596篇
  1989年   570篇
  1988年   588篇
  1987年   558篇
  1986年   597篇
  1985年   557篇
  1984年   470篇
  1983年   501篇
  1982年   402篇
  1981年   389篇
  1980年   286篇
  1979年   394篇
  1978年   277篇
  1977年   235篇
  1976年   205篇
  1975年   229篇
  1974年   255篇
  1973年   209篇
  1972年   200篇
  1971年   175篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
981.
982.
983.
984.
The Journal of Technology Transfer - This paper investigates the role of innovative activity and other micro determinants, on firms’ investment behaviour. The empirical analysis is based on a...  相似文献   
985.
Journal of Family Violence - We qualitatively explored young women’s intimate partner violence (IPV) victimization within abusive first relationships (characterized by physical IPV, coercive...  相似文献   
986.
The Journal of Technology Transfer - The importance and the definition of an entrepreneurial university (EU), together with the factors that lead to its existence, have been widely discussed in the...  相似文献   
987.
Open governance requirements are designed to improve accountability, which implies that transparent governments are more trustworthy stewards of their publicly invested power. However, transparency may also reduce institutional effectiveness and inhibit political compromise, diminishing the capacity to manage resources responsibly. We assess empirical support for these competing perspectives in the context of American state legislatures, many of which have become exempt from state sunshine laws in recent decades. We leverage variation in the timing of these legislative exemptions to identify the effect of removing transparency in a crucial governing institution on investors’ risk perceptions of states’ general obligation bonds. Our analysis of these data during the period 1995–2010 suggests that removing legislative transparency reduces state credit risk. We conclude that while openness in government may be normatively desirable, shielding legislative proceedings from public view may actually be better for states’ debt repayment capacity, improving their overall fiscal health.  相似文献   
988.
The interdependency of ?production“ and ?reproduction“ has increasingly attracted the attention of the scientific community and the media. Biological and social reproductions are topics of family and gender studies: In family research reproduction is analysed as a basic function of the family; in gender research reproduction is mainly studied as a factor that effects social inequality. While sociological research was for a long-time concentrated on the ?conciliation“ of ?work“ and ?(family) life“, nowadays a change of perspective is necessary: How can employees maintain their psychological and physical strength when the work sphere becomes more and more flexible? How can they safeguard their social relationships? The article connects the categories ?work-strength –life-strength “ as a perspective that considers the structural and contradictory relationship of ?work“ and ?life“. With the concept of ?doing reproduction“, individual efforts are brought in the centre of research. Hereby is shown that the functionality of reproduction as a social sphere is fundamentally based on reproduction as an individual practice.  相似文献   
989.
Research examining the relationship between internalizing symptoms and antisocial behaviors has generally been cross-sectional in design. Thus, although extant data have substantiated a strong correlation between internalizing symptoms and antisocial behaviors, few studies have focused on describing the nature of the co-occurrence over time. This study examined the relation between growth in internalizing symptoms and longitudinal patterns of antisocial behavior in a sample of 283 inner-city males and their caregivers assessed as part of a longitudinal developmental risk study. Participants were assessed annually in four waves. Non-offenders and escalating offenders had lower levels of internalizing problems at wave 1 than did chronic minor and serious-chronic-violent offenders. Results revealed a developmental trend of decreasing internalizing problems across study years for most participants, as would be expected, with adolescents participating in serious, chronic, and violent patterns of antisocial behavior displaying greater internalizing problems than those participating in stable patterns of less serious or no antisocial behavior. Further, when there was escalation of seriousness and frequency of antisocial behavior, there also was increased internalizing problems relative to non-escalating juveniles. Results are discussed in the context of developmental psychopathology.
Ashli J. SheidowEmail:
  相似文献   
990.
Community, demographic, familial, and personal risk factors of childhood depressive symptoms were examined from an ecological theoretical approach using hierarchical linear modeling. Individual-level data were collected from an ethnically diverse (73% African-American) community sample of 197 children and their parents; community-level data were obtained from the U.S. Census regarding rates of community poverty and unemployment in participants’ neighborhoods. Results indicated that high rates of community poverty and unemployment, children’s depressive attributional style, and low levels of self-perceived competence predict children’s depressive symptoms, even after accounting for demographic and familial risk factors, such as parental education and negative parenting behaviors. The effect of negative parenting behaviors on depressive symptoms was partially mediated by personal variables like children’s self-perceived competence. Recommendations for future research, intervention and prevention programs are discussed.
Danielle H. DallaireEmail:

Dr. Danielle H. Dallaire   is an Assistant Professor in the Psychology Department at The College of William and Mary. She received her Ph.D. from Temple University in 2003. Her major research interests include children’s social and emotional development and promoting resiliency in children and families in high risk environments, particularly children and families dealing with parental incarceration. Dr. David A. Cole   is a Professor in the Department of Psychology and Human Development at Vanderbilt University. He received his Ph.D. from The University of Houston in 1983. His major research interests center around developmental psychopathology in general and childhood depression in particular. Dr. Thomas M. Smith   is an Assistant Professor of Public Policy and Education at Vanderbilt University, Peabody College. He received his Ph.D. in 2000 from The Pennsylvania State University. Professor Smith’s current research agenda focuses on the organization of teaching quality, exploring relationships between educational policy (national, state, district, and school level), school organization, teacher commitment, and the quality of classroom instruction. Dr. Jeffrey A. Ciesla   is an Assistant Professor in the Psychology Department at Kent State University. He received his Ph.D. from The State University of New York at Buffalo in 2004. His major research interests include the effects of ruminative thought and stressful life events on depressive disorders. Beth LaGrange,   M.S., is a Doctoral candidate in Clinical Psychology in the Department of Psychology and Human Development at Vanderbilt University. Her current research interests include depression and the development of depressive cognitive style in children and adolescents. Dr. Farrah M. Jacquez   is a Postdoctoral fellow in pediatric psychology at the Mailman Center for Child Development at the University of Miami. She received her Ph.D. from Vanderbilt University in 2006. Her major research interests include parenting in the context of poverty and developing community-based interventions for underserved children and families. Ashley Q. Pineda,   M.S., is a Doctoral candidate in Clinical Psychology in the Department of Psychology and Human Development at Vanderbilt University and is currently completing her internship at the Children’s Hospital at Stanford University. Her major research interests include examining the reciprocal relations between parenting behaviors, depressive cognitions, and childhood depression. Alanna E. Truss,   M.S., is a Doctoral candidate in the Department of Psychology and Human Development at Vanderbilt University. Her major research and clinical interests include developmental factors in internalizing disorders in children and adolescents and the effects of trauma on children and families. Amy S. Folmer   is a graduate student in the Department of Psychology and Human Development at Vanderbilt University. She received her B.A. from The University of Texas in 2003. Her major research interests include cognitive developmental factors that influence the applicability of adult cognitive models of depression to 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