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   1425篇
  免费   68篇
各国政治   74篇
工人农民   87篇
世界政治   121篇
外交国际关系   117篇
法律   746篇
中国共产党   1篇
中国政治   20篇
政治理论   320篇
综合类   7篇
  2023年   11篇
  2022年   14篇
  2021年   40篇
  2020年   43篇
  2019年   56篇
  2018年   57篇
  2017年   68篇
  2016年   71篇
  2015年   49篇
  2014年   59篇
  2013年   235篇
  2012年   63篇
  2011年   57篇
  2010年   37篇
  2009年   46篇
  2008年   43篇
  2007年   63篇
  2006年   51篇
  2005年   24篇
  2004年   36篇
  2003年   29篇
  2002年   33篇
  2001年   25篇
  2000年   25篇
  1999年   16篇
  1998年   16篇
  1997年   13篇
  1996年   19篇
  1995年   19篇
  1994年   12篇
  1993年   12篇
  1992年   16篇
  1991年   11篇
  1990年   12篇
  1989年   10篇
  1988年   9篇
  1987年   5篇
  1986年   5篇
  1985年   7篇
  1984年   11篇
  1982年   6篇
  1980年   4篇
  1979年   9篇
  1978年   4篇
  1977年   6篇
  1976年   4篇
  1975年   4篇
  1974年   5篇
  1970年   4篇
  1969年   5篇
排序方式: 共有1493条查询结果,搜索用时 171 毫秒
91.
92.
Self-report questionnaires are frequently used in youth research, but doubt remains whether total anonymity affects the results. This study compared the responses of 704 mainly 16–17-year-old adolescents to self-report measures of various health indicators in 2 groups: anonymous and confidential collection. For most health indicators no significant differences were found. Perceived health, use of alcohol, and aggressive behavior (for boys) were reported significantly less frequently in the confidential group (small effect size). It appeared that pupils with high scores on social desirability do not respond differently at most health indicators in the 2 conditions. For most health characteristics, epidemiologically useful outcomes may be derived from confidential self-report measures, which are also valuable for detecting individual at-risk children. Similar studies in lower grades and other types of education should confirm the results.Youth Department, Municipal Health Service Rotterdam area. Main research interests are emotional and behavioral problems of adolescents, youth health care, monitoring.Youth Department, Municipal Health Service Rotterdam area. Main research interests are emotional and behavioral problems of adolescents, youth health care, monitoring.Research Department, Municipal Health Service Rotterdam area. Major research interests include emotional and behavioral problems of adolescents, suicidal behavior, youth health care, monitoring.  相似文献   
93.
I gratefully acknowledge the comments of Jan Potters and Joep Sonnemans on an earlier version of this paper.  相似文献   
94.
Using a behavioral model of political decisionmaking, it is argued that an increasing population size and/or an increasing efficiency of production in a private enterprise economy relative to a centrally planned economy may create the conditions for a self-interested nomenklatura in a Soviet-type economy to consider a transition to a market economy. This transition may be thwarted, however, by the threat for prospective private enterpreneurs of exploitation after the change of regime. Some form of political pluralism guaranteeing sufficient political influence to private entrepreneurs appears to be required for a successful transition. The analysis shows that such a combined political and economic reform can be in the interest of the nomenklatura, thereby providing an endogenous behavioral explanation for a change of regime.  相似文献   
95.
96.

Volume Contents

Contents of Volume 19 (2000)  相似文献   
97.
98.
The public choice literature contains little formal analysis of the bureaucratic choice of production modes — public or private — of publicly funded services. An important question to be addressed is why some governmental bodies choose to provide a publicly funded service with publicly owned and operated production units whereas other governmental bodies contract with private firms to provide the same publicly funded service. This paper is the first formal attempt to remedy this gap in the literature. We develop a theoretical explanation of the government decision maker's choice between public and private production modes based on utility maximizing behavior. We then examine empirically this choice employing logit analysis. The empirical results, which include several tests for robustness, confirm our theoretical explanation. The results are significant and suggest that non-monetary constraints are an important factor affecting this choice of production modes and that monetary constraints are less influential.  相似文献   
99.
100.
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