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   19188篇
  免费   1226篇
各国政治   852篇
工人农民   898篇
世界政治   1355篇
外交国际关系   638篇
法律   12948篇
中国共产党   2篇
中国政治   110篇
政治理论   3508篇
综合类   103篇
  2023年   92篇
  2021年   103篇
  2020年   457篇
  2019年   491篇
  2018年   617篇
  2017年   640篇
  2016年   733篇
  2015年   553篇
  2014年   581篇
  2013年   2145篇
  2012年   533篇
  2011年   552篇
  2010年   595篇
  2009年   605篇
  2008年   570篇
  2007年   584篇
  2006年   584篇
  2005年   504篇
  2004年   498篇
  2003年   403篇
  2002年   447篇
  2001年   697篇
  2000年   639篇
  1999年   506篇
  1998年   257篇
  1997年   196篇
  1996年   213篇
  1995年   208篇
  1994年   190篇
  1993年   188篇
  1992年   318篇
  1991年   327篇
  1990年   313篇
  1989年   286篇
  1988年   320篇
  1987年   279篇
  1986年   333篇
  1985年   327篇
  1984年   255篇
  1983年   236篇
  1982年   196篇
  1981年   165篇
  1980年   147篇
  1979年   230篇
  1978年   126篇
  1977年   97篇
  1975年   98篇
  1974年   130篇
  1973年   81篇
  1972年   82篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
221.
An increase in birth rates to Minneapolis minors following the enactment of a parental notification law was examined. A well-publicized link between increasing birth rates and the law is shown to have been premature. Birth, abortion, and population data by age, race, and region suggest that the increasing birth rate in Minneapolis was not related to parental notification, but rather to a growing racial minority population.Preparation of this article was supported in part by an Aldeen Grant from Wheaton College. The authors wish to thank the Minnesota Center for Health Statistics, particularly James Wigginton and Carol Vargas, for their considerable work to provide birth, abortion, and population data in a form suitable for the current analysis. The authors also thank Americans United for Life for purchasing the data and providing them to the authors.  相似文献   
222.
223.
224.
Beck M  Hager M  Rogers P  Miller S  Rosenberg D  Snow K 《Newsweek》1993,121(14):28-33
With Bill Clinton's new reforms only a month away, the health-care system is on the operating table--and the doctors are under the knife. Americans have a love-hate relationship with physicians: they like the care that doctors provide but hold them to blame for the nation's health-care mess. NEWSWEEK looks at how the culture of medicine may change, assesses doctors' fears--and examines the brave new world of HMOs.  相似文献   
225.
226.
227.
This article builds a composite index, the Central American Integration Index (IIC-AMPI), to measure economic integration. This index utilises a robust methodology and conceptual framework. The study shows that IIC-AMPI is responsive to variable changes and resistant to outliers. The findings indicate that the Deep Integration Process initiative dominates the current integration trend, as seen in the regional average score from 2015 to 2017, aligning with Guatemala and Honduras. Nicaragua demonstrates the most consistent progress, while Panama lags behind. The evidence supports the Customs Union as Central America's future integration path, highlighting the index's ability to capture the dynamic reality of economic integration.  相似文献   
228.
229.
230.
The present research explored factors thought to affect compensatory awards for non-economic ham (pain and suffering) in personal injury cases. Experiment 1 showed that the nature and severity of the plaintiffs injury had a strong effect on perceptions of the extent of harm suffered and on award amounts. The parties' relatively active or passive roles in causing the injury affected assessments of their degree of fault, but perceived fault had little influence on awards. Experiment 2 replicated with more varied cases the strong impact of injury severity on harm perception and on awards for pain and suffering. In both studies, the disability and the mental suffering associated with injuries were stronger predictors of awards than were pain and disfigurement.  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