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   4227篇
  免费   187篇
各国政治   239篇
工人农民   110篇
世界政治   441篇
外交国际关系   235篇
法律   1863篇
中国政治   21篇
政治理论   1464篇
综合类   41篇
  2021年   23篇
  2020年   48篇
  2019年   59篇
  2018年   98篇
  2017年   112篇
  2016年   144篇
  2015年   91篇
  2014年   82篇
  2013年   644篇
  2012年   119篇
  2011年   97篇
  2010年   115篇
  2009年   125篇
  2008年   118篇
  2007年   133篇
  2006年   133篇
  2005年   128篇
  2004年   118篇
  2003年   116篇
  2002年   117篇
  2001年   71篇
  2000年   88篇
  1999年   73篇
  1998年   97篇
  1997年   78篇
  1996年   43篇
  1995年   76篇
  1994年   66篇
  1993年   69篇
  1992年   71篇
  1991年   57篇
  1990年   55篇
  1989年   65篇
  1988年   64篇
  1987年   74篇
  1986年   62篇
  1985年   76篇
  1984年   62篇
  1983年   50篇
  1982年   55篇
  1981年   53篇
  1980年   39篇
  1979年   43篇
  1978年   38篇
  1977年   35篇
  1976年   26篇
  1975年   24篇
  1974年   24篇
  1973年   25篇
  1969年   20篇
排序方式: 共有4414条查询结果,搜索用时 31 毫秒
141.
Growth curve analyses were used to investigate parents’ and peers’ influence on adolescents’ choice to abstain from antisocial behavior in a community-based sample of 416 early adolescents living in the Southeastern United States. Participants were primarily European American (91%) and 51% were girls. Both parents and peers were important influences on the choice to abstain from antisocial behavior. Over the four-year period adolescents relied increasingly on parents as influences and relied less on peers as influences to deter antisocial behavior. Significant gender differences emerged and suggested that female adolescents relied more on social influences than did male adolescents but that as time progressed male adolescents increased the rate at which they relied on peers. Higher family income was associated with choosing peers as a social influence at wave 1, but no other significant income associations were found. Understanding influences on adolescents’ abstinence choices is important for preventing antisocial behavior.
Emily C. CookEmail:

Emily C. Cook   is in her final year of doctoral studies in human development and family studies at the University of North Carolina at Greensboro. Her research interests include peer influences and parental influences on adolescents’ problem behaviors, parental influences on adolescents’ social development, and effective prevention and interventions for adolescents who exhibit problem behaviors. Cheryl Buehler   is a professor of human development and family studies at the University of North Carolina at Greensboro. Her research interests include marital conflict, marital relations, parenting, and adolescent well-being. Robert Henson   is an assistant professor of educational research methodology at the University of North Carolina at Greensboro. Dr. Henson’s research interests include educational measurement, cognitive diagnosis models, hierarchical linear models, and mathematical statistics.  相似文献   
142.
Research indicates that subjective perceptions of socioeconomic status (SES) affect aspects of health and behavior. There has been little research attention to how objective (e.g., education) and subjective aspects of SES may differ in their influence on the substance use of adolescent immigrants. The present study examined whether the associations between subjective SES and substance use, and between parental education and substance use varied by immigrant generation. Data were derived from the 2011 Ontario Student Drug Use and Health Survey, a representative survey of students in the 7th to 12th grade. The sample for this study consisted of 9177 students 12–19 years of age; 48.4 % were female, 66.4 % were White/European, 5.2 % Black/Afro-Caribbean, 16.4 % Asian and 12 % other. Results indicated that subjective SES was more strongly associated with cannabis and alcohol use among first-generation immigrants than among adolescents of other immigrant generations even after adjusting for parental education. First-generation immigrants with low subjective SES had a lower probability of cannabis and regular alcohol use, but there was no difference in use between immigrant generations at high subjective SES. The associations between parental education and cannabis and alcohol use did not significantly vary with immigrant generation. The findings highlight the importance of status beliefs among adolescents, particularly among first-generation immigrants, and suggest that further research attention to such beliefs would enhance our understanding of SES and its links to adolescent health risk behaviors.  相似文献   
143.
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   
144.
Evidence suggests that lesbian and gay young adults use substances more frequently than their heterosexual peers. Based on the life course perspective, we argue that this difference may be due to the unavailability of marriage as a turning point in the lives of lesbian/gay young adults. We use data from a nationally representative sample of youth (N = 13,581, 52.4% female, 68.6% white, ages 18—26) to examine sexual orientation differences in substance use and explore whether these differences vary by romantic partnership formation in young adulthood. We find that the formation of more serious partnerships (e.g., cohabitation, marriage) is associated with less frequent substance use among heterosexual young adults, though this pattern does not hold for lesbian and gay young adults. We conclude that the partnership options available to lesbians and gay men do not provide the same health-protective benefits that marriage does for heterosexuals.  相似文献   
145.
This analysis charts the changes in British aid policy under the Margaret Thatcher government (1979–1990). In particular, it examines the impact of so-called neo-liberal ideology in overseas development strategy in an era where “structural adjustment”—aid in return for market-based reforms—became World Bank and International Monetary Fund orthodoxy. There is some evidence to show British increases in multilateral aid during the 1980s supported a neo-liberal aid policy. Bilateral aid policy, however, demonstrated a subordination of aid to foreign policy and a pro-business—not ideologically pro-market or neo-liberal—alignment. One of the results of these structural changes was the Pergau Dam scandal at the end of the Thatcher years.  相似文献   
146.
This article demonstrates that World Bank internal learning has led to significant changes in how the organization interacts with government officials through survey missions. Reviewing evidence of institutional learning and associated changes in practice and focusing on the relational modes being manifest in technical assistance, the article identifies three main phases of World Bank survey missions: general survey missions (1940s–1960s), country assistance strategies (1990s–2000s), and country partnership frameworks (2010s). Overall, World Bank reviews have repeatedly highlighted the importance of non-hierarchical interactions between Bank staff and country officials. In recent years, practice has begun to catch up with these operational insights.  相似文献   
147.
In the second of our two-part review of Vladimir Lenin’s 1917 study of American agriculture, we extrapolate upon Alexander Chayanov’s neoliberal appropriation, Giovanni Arrighi’s treatment of partial proletarianization, the propagandistic “family farm,” agribusiness’s fluctuating territorial embeddedness, agriculture as an industry, and land and rent as commodities themselves. We finish by deploying Lenin’s alternate history as a Benjaminian détournement in the face of what now appear insurmountable obstacles. An alternate food future is not only possible, it is already underway.  相似文献   
148.
149.
150.
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