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   11026篇
  免费   307篇
各国政治   421篇
工人农民   388篇
世界政治   754篇
外交国际关系   295篇
法律   6907篇
中国政治   74篇
政治理论   2402篇
综合类   92篇
  2020年   106篇
  2019年   160篇
  2018年   200篇
  2017年   232篇
  2016年   219篇
  2015年   166篇
  2014年   188篇
  2013年   1015篇
  2012年   224篇
  2011年   274篇
  2010年   223篇
  2009年   277篇
  2008年   276篇
  2007年   281篇
  2006年   272篇
  2005年   258篇
  2004年   252篇
  2003年   250篇
  2002年   252篇
  2001年   428篇
  2000年   379篇
  1999年   302篇
  1998年   171篇
  1997年   128篇
  1996年   137篇
  1995年   144篇
  1994年   139篇
  1993年   140篇
  1992年   241篇
  1991年   260篇
  1990年   246篇
  1989年   255篇
  1988年   235篇
  1987年   236篇
  1986年   274篇
  1985年   264篇
  1984年   237篇
  1983年   222篇
  1982年   155篇
  1981年   138篇
  1980年   117篇
  1979年   156篇
  1978年   91篇
  1977年   118篇
  1976年   103篇
  1975年   74篇
  1974年   90篇
  1973年   84篇
  1972年   81篇
  1971年   69篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
101.
In 1990, the state of California passed the pioneering mandate on zero emission vehicles (ZEV). This technology‐forcing regulation is aimed at improvement of air quality and protection of public health from the adverse effects of air pollutants from automobiles. Facing severe opposition from the auto industry, the mandate has been revised a number of times, most recently in 2003, whereby the requirement for ZEVs have been made to align with the pace of technology development. Review of strategies used in implementation of the mandate has revealed greater emphasis on the economic incentives for rather than on environmental merits of ZEVs. Using prospect theory as the framework for analysis, the reasons have been explored. The findings of the study help us to understand how decisions are made with respect with to deviations from a mental anchor point and through the process of evaluation of losses and gains.  相似文献   
102.
This analysis reveals that traditional market power measuresare biased under the conditions of multi-market participationand demand interdependence. Specifically, when complementary(substitutable) demands dominate, traditional market power measuresare biased upward (downward). A similar bias carries over tothe evaluation of mergers. To wit, mergers that simultaneouslyincrease market concentration and multi-market participationcan result in lower prices even in the absence of merger economies.It follows that merger guidelines that place undue emphasison market concentration can lead policymakers to block (approve)mergers that enhance (diminish) consumer welfare.  相似文献   
103.
104.
105.
This report assesses the effects on peripheral oxygen saturation and heart rate that positional restraint induces when a person is prone, handcuffed, and "hog-tied." Peripheral oxygen saturation and heart rate were monitored at rest, during exercise, and during recovery from exercise for 10 adult subjects. The effects of positional restraint produced a mean recovery time that was significantly prolonged. Consequently, the physiological effects produced by positional restraint should be recognized in deaths where such measures are used.  相似文献   
106.
107.
Easterbrook G  Barry J  Thomas R  Clift E  Wingert  Hager M  Cohn B 《Newsweek》1992,120(22):30, 32-34, 36
Lobbyists, entrenched forces in congress and self-interested friends will try to stymie Clinton's efforts. A look at four key arenas of combat.  相似文献   
108.
Thomas R 《Newsweek》1992,120(26):32
  相似文献   
109.
110.
Two issues were examined in this study—the consistency of moral judgment across different types of dilemma and different social contexts, and the relationship between the structure (stage) of moral judgment and the content of moral decisions. Forty subjects were given two hypothetical dilemmas about business decisions and two standard Kohlberg dilemmas. Half the subjects directed their responses to a business audience, half to a philosophical audience. Responses to the moral dilemmas were scored in accordance with the Colby and Kohlberg (1987) scoring manual. Stage of moral reasoning was found to be significantly higher on the Kohlberg dilemmas than on the business dilemmas. A significant interaction between type of dilemma and audience was attributed to the tendency of subjects directing their responses to a business audience to interpret one of the business dilemmas in terms of the moral order of business, but for subjects directing their responses to a philosophy audience to treat it as a philosophical dilemma. The other business dilemma evoked uniformly low-level moral judgments. The amount of selfishness intrinsic in subjects' moral choices on the business dilemmas was significantly negatively correlated with moral maturity on the business dilemmas, but not with their moral maturity on Kohlberg's test. These results are interpreted as more consistent with models of moral development such as those advanced by C. G. Levine ([1979] Stage Acquisition and Stage Use: An Appraisal of Stage Displacement Explanations of Variation in Moral Reasoning, Human Development, Vol. 22, pp. 145–164), J. Rest ([1983] Morality, in: P. H. Mussen [ed.], J. H. Flavell and E. Markman [Vol. eds.], Handbook of Child Psychology [Vol. 3, 4th ed.], John Wiley & Sons, New York), and R. Harré ([1984]) Personal Being: A Theory for Individual Psychology, Harvard University Press, Cambridge, Massachusetts), which posit a relatively wide range of within-person stage use and emphasize the determining power of social situations, than with the more constructivistic model of moral development of Colby and Kohlberg (1987).This research was supported by Grant No. 410-87-1115 from the Social Sciences and Humanities Research Council of Canada.Received B.A. and M.A from Simon Fraser University. Research interests include moral development, and the influence of social interaction and language on the development of reasoning.Received Ph.D. from Harvard University. Research interests include moral development, altruism, and self-deception.  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