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   3428篇
  免费   56篇
各国政治   97篇
工人农民   93篇
世界政治   145篇
外交国际关系   95篇
法律   2649篇
中国政治   17篇
政治理论   351篇
综合类   37篇
  2020年   33篇
  2019年   34篇
  2018年   54篇
  2017年   42篇
  2016年   63篇
  2015年   28篇
  2014年   51篇
  2013年   245篇
  2012年   86篇
  2011年   132篇
  2010年   79篇
  2009年   61篇
  2008年   108篇
  2007年   121篇
  2006年   106篇
  2005年   84篇
  2004年   121篇
  2003年   113篇
  2002年   108篇
  2001年   150篇
  2000年   134篇
  1999年   103篇
  1998年   20篇
  1995年   17篇
  1993年   27篇
  1992年   62篇
  1991年   83篇
  1990年   85篇
  1989年   91篇
  1988年   95篇
  1987年   89篇
  1986年   75篇
  1985年   77篇
  1984年   67篇
  1983年   58篇
  1982年   24篇
  1981年   20篇
  1979年   30篇
  1978年   33篇
  1977年   22篇
  1976年   27篇
  1975年   28篇
  1974年   37篇
  1973年   37篇
  1972年   35篇
  1971年   36篇
  1970年   38篇
  1969年   32篇
  1968年   27篇
  1967年   18篇
排序方式: 共有3484条查询结果,搜索用时 15 毫秒
991.
992.
In this paper, we analyze the tax compliance behavior of U.S. taxpayers by using a 1979 data set that combines information from a random sample of individual tax returns, each of which has been thoroughly audited, IRS administrative records, and sociodemographic data from the Census. We find evidence that both audits and tax code provisions affect compliance. However, the effects are significant for only low-and high-income groups. Interestingly, work on the underground economy also suggests that it is these two groups that are least compliant. Our results for audits suggest that the ripple or general deterrent effect of audits may be substantially larger than the direct revenue yield of audits for high-income taxpayers. Our results for allowable subtractions from income imply that the 1986 Tax Reform Act changes that lowered allowable subtractions may have procompliance effects.  相似文献   
993.
994.
995.
Four hundred and fiftynine students from 20 different high school classrooms in Michigan participated in focus group discussions about the character strengths included in the Values in Action Classification. Students were interested in the subject of good character and able to discuss with candor and sophistication instances of each strength. They were especially drawn to the positive traits of leadership, practical intelligence, wisdom, social intelligence, love of learning, spirituality, and the capacity to love and be loved. Students believed that strengths were largely acquired rather than innate and that these strengths developed through ongoing life experience as opposed to formal instruction. They cited an almost complete lack of contemporary role models exemplifying different strengths of character. Implications of these findings for the quantitative assessment of positive traits were discussed, as were implications for designing character education programs for adolescents. We suggest that peers can be an especially important force in encouraging the development and display of good character among youth.  相似文献   
996.
This paper analyzes the propaganda campaign orchestrated by the Russian authorities with the aim of promoting a version of the country’s history for political purposes. This version puts the accent on the exceptionality of Russian historical development, and is geared to endowing the figure of Vladimir Putin – seen as the person who has succeeded in carrying out a number of national projects that have been frequently abandoned throughout Russian history. The analysis presented here centres on two channels used in the campaign: school textbooks and the film industry.  相似文献   
997.
In this study we revisit the question of black representation on city councils and school boards using a novel substantive and methodological approach and longitudinal data for a sample of over 300 boards and councils. Conceptualizing black representation as a two-stage process, we fit Mullahy's hurdle Poisson models to explain whether and to what extent blacks achieve representation in local legislatures. We find that while the size of the black population and electoral arrangements matter more than ever, especially for overcoming the representational hurdle, the extent to which the black population is concentrated is also strongly associated with black council representation. Further, whereas black resources and opportunities to build "rainbow" coalitions with Latinos or liberal whites are marginally if at all related to black legislative representation, we find that legislative size is an underappreciated mechanism by which to increase representation, particularly in at-large systems, and is perhaps the best predictor of moving towards additional representation.  相似文献   
998.
999.
Four enzymic digestion methods have been evaluated for their efficiency in releasing certain alkaloids and glycosides from spiked liver tissue. Enzymic digestion gives better recoveries of all the plant poisons studied than those obtained by conventional methods. A flow diagram for the enzymic methods of drug isolation and quantitation by HPLC is presented. Enzymic digestion for the release of glycosides is reported for the first time. It is concluded that papain digestion is the most suitable method for the analysis of broad spectrum of compounds of forensic and clinical importance.  相似文献   
1000.
This paper analyses the impact of elections, partisan and political support effects on the dynamics of human development in a panel of 82 countries over the period 1980–2013. A Generalised Method of Moments(GMM) estimator is employed and the results point out to the presence of an electoral cycle in the growth rate of human development. Majority governments also influence it, but no evidence is found regarding partisan effects. The electoral cycles have proved to be stronger in non-OECD countries, in countries with less frequent elections, with lower levels of income and human development, in presidential and non-plurality systems and in proportional representation regimes.  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