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   1057篇
  免费   77篇
各国政治   78篇
工人农民   45篇
世界政治   90篇
外交国际关系   109篇
法律   456篇
中国政治   4篇
政治理论   351篇
综合类   1篇
  2023年   12篇
  2022年   9篇
  2021年   13篇
  2020年   37篇
  2019年   46篇
  2018年   64篇
  2017年   75篇
  2016年   78篇
  2015年   38篇
  2014年   55篇
  2013年   185篇
  2012年   46篇
  2011年   44篇
  2010年   45篇
  2009年   53篇
  2008年   44篇
  2007年   38篇
  2006年   28篇
  2005年   32篇
  2004年   28篇
  2003年   31篇
  2002年   29篇
  2001年   17篇
  2000年   17篇
  1999年   10篇
  1998年   9篇
  1997年   13篇
  1996年   6篇
  1995年   4篇
  1994年   1篇
  1993年   5篇
  1992年   4篇
  1991年   1篇
  1989年   3篇
  1988年   1篇
  1987年   3篇
  1985年   1篇
  1984年   1篇
  1983年   1篇
  1982年   2篇
  1980年   1篇
  1978年   1篇
  1977年   1篇
  1971年   1篇
  1970年   1篇
排序方式: 共有1134条查询结果,搜索用时 10 毫秒
41.
42.
Studies using valid measures of monitoring activities have not found the anticipated main effects linking greater monitoring activity with fewer behavioral problems. This study focused on two contexts in which monitoring activities may be particularly influential. Early adolescents (n = 218, M age = 11.5 years, 51% female, 49% European American, 47% African American) reported their unsupervised time, beliefs about the legitimacy of their parents’ authority, and their own involvement in antisocial behavior. Mothers and adolescents reported their perceptions of adolescent disclosure and parental solicitation and control. Adolescents’ perceptions of greater parental solicitation at age 11 were associated with less antisocial behavior at age 12 (when controlling for age 11 antisocial behavior) among adolescents reporting large amounts of unsupervised time and weak legitimacy beliefs. Perceived parental solicitation may be an effective deterrent of antisocial behavior when adolescents spend a lot of time unsupervised and for adolescents who are likely to challenge the legitimacy of their parents’ authority.  相似文献   
43.
The current study examined concurrent and longitudinal predictors of early adolescents’ involvement in Internet aggression. Cross-sectional results (N = 330; 57% female) showed that the likelihood of reporting Internet aggression was higher among youth who spent more time using Internet-based technologies to communicate with friends and who were themselves targets of Internet aggression. Offline relational aggression and beliefs supportive of relational and physical aggression also predicted concurrent involvement in Internet aggression. We used longitudinal data (N = 150; 51% female) to distinguish between youth who were aggressive in traditional contexts only (i.e., school) from those who were aggressive both online and offline. These results indicated that youth who were aggressive both online and offline were older at the initial assessment, were targets of Internet aggression, and held beliefs more supportive of relational aggression than youth who were aggressive offline only. Implications and directions for future research are discussed.  相似文献   
44.
45.
46.
Abstract

You did it. You successfully worked with a wireless service provider to find the ideal spot for its new wireless tower. The tower is positioned perfectly—in the heart of downtown, yet safe, hidden, completely undisruptive. The provider is happy. The community is content. It’s a win‐win. Fast forward a month. The provider is back with a new idea: To support the latest technology and to enhance its revenues, it will add not one, but four 20‐foot extensions for new antennas. The extensions would make the otherwise hidden facility visible. They would reach across and over the sidewalk and street, presenting safety risks. And the provider would also add four new equipment cabinets and an equipment shelter. Your answer is easy: Absolutely not. We can find a better solution. But this time the provider is not asking, it’s demanding. It says that because it is not proposing an initial facility but a colocation, you must approve its requests. Whether the provider is correct may turn on how the Federal Communications Commission (FCC) resolves a pending rule making. This article describes the proceeding, key issues it raises, and what the proceeding may mean to you and your community. As a planner, you can influence the proceeding by meeting with the FCC to discuss the proposed rules and by responding to industry claims that local requirements are delaying deployment.  相似文献   
47.
The transition to high school has been identified as a potentially difficult time in adolescents’ lives. Reductions in both academic and social functioning often accompany this transition. While these effects have been documented in urban youth, the move to high school has not been extensively studied in rural minority youth. Toward that end, the academic grades and substance use in ninth grade of 447 (184 male and 263 female) African-American adolescents from two rural counties in a state in the deep South were examined in relation to configurations of adaptation from sixth through eighth grade. Results indicate that individual with consistently positive patterns across middle school had higher grades and lower rates of substance use compared to individuals with persistent difficulties or those that transitioned to problem behavior. Many individuals who improved in their patterns of adaptation had relatively high grades, but also rather high rates of substance use in the ninth grade. David B. Estell is an assistant professor of educational psychology at Indiana University Bloomington. He received his PhD in Developmental Psychology from the University of North Carolina at Chapel Hill. His major research interests include peer relations and the development of aggression. Thomas W. Farmer is an associate professor of education at Pennsylvania State University and director of the National Research Center on Rural Education Support. He received his PhD in Special Education from University of North Carolina at Chapel Hill. His major research interests include peer relations and the development of aggression in students with and without special needs. Matthew J. Irvin is a research scientist at the Center for Developmental Science at the University of North Carolina at Chapel Hill. He received his PhD in Educational Psychology from the University of North Carolina at Chapel Hill. His major research interests include resilience and student engagement. Jana H. Thompson is a research associate at the Center for Developmental Science at the University of North Carolina at Chapel Hill. Her research interests include peer social relations and developmental transitions into early adolescence. Bryan C. Hutchins is a research assistant at the Center for Developmental Science at the University of North Carolina at Chapel Hill. He is also a graduate student in the Educational Psychology, Measurement, and Evaluation Program at UNC. His research interests include child and adolescent social development and school based emotional and behavioral interventions and prevention programs. Erin M. McDonough is currently a doctoral candidate in School Psychology at the University of North Carolina at Chapel Hill. She received her Bachelor of Arts degree in Psychology from Emory University. As a research assistant at the Center for Developmental Science, she has been able to explore her interests in student achievement as well as rural education. Another major research interest of hers is school-based mental health.  相似文献   
48.
In this article I test two competing visions about how democracy produces responsive government. Electoral theories of democracy posit that elected governments are responsive to public demands because citizens are able to sanction bad politicians and select good ones. Participatory theories attribute responsiveness to a citizenry's ability to articulate demands and pressure government through a wider range of political action. I test hypotheses derived from these two approaches, using an original dataset that combines electoral, socioeconomic, and public-financial indicators for Mexico's 2,400 municipalities, from 1989 to 2000. The data show that electoral competition has no effect on municipal government performance. But the results are consistent with the hypothesis that nonelectoral participation causes improved performance. Thus, I suggest that the quality of municipal government in Mexico depends on an engaged citizenry and cooperation between political leaders and their constituents, rather than the threat of electoral punishment. I recommend that scholars broaden the study of government responsiveness to account for participatory strategies of political influence and critically assess the claims of those who would promote elections as a cure-all for poor democratic performance.  相似文献   
49.
Why does the influence of Congressional parties fluctuate over time? Building on prevailing answers, we develop a model, Strategic Party Government, which highlights the electoral motives of legislative parties and the strategic interaction between parties. We test this theory using the entire range of House and Senate party behavior from 1789 to 2000 and find that the strategic behavior of parties complements members' preferences as an explanation for variation in party influence. Specifically, the strongest predictors of one party's voting unity are the unity of the opposing party and the difference between the parties in the preceding year. Moreover, we find strong links between party behavior in Congress and electoral outcomes: an increase in partisan influence on legislative voting has adverse electoral costs, while winning contested votes has electoral benefits.  相似文献   
50.
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