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   10989篇
  免费   555篇
各国政治   423篇
工人农民   414篇
世界政治   922篇
外交国际关系   317篇
法律   7335篇
中国共产党   1篇
中国政治   61篇
政治理论   2029篇
综合类   42篇
  2021年   61篇
  2020年   194篇
  2019年   235篇
  2018年   242篇
  2017年   304篇
  2016年   317篇
  2015年   260篇
  2014年   281篇
  2013年   1031篇
  2012年   249篇
  2011年   315篇
  2010年   303篇
  2009年   315篇
  2008年   308篇
  2007年   285篇
  2006年   303篇
  2005年   280篇
  2004年   264篇
  2003年   254篇
  2002年   271篇
  2001年   467篇
  2000年   426篇
  1999年   303篇
  1998年   192篇
  1997年   151篇
  1996年   128篇
  1995年   122篇
  1994年   152篇
  1993年   139篇
  1992年   204篇
  1991年   225篇
  1990年   209篇
  1989年   217篇
  1988年   210篇
  1987年   198篇
  1986年   240篇
  1985年   215篇
  1984年   163篇
  1983年   173篇
  1982年   116篇
  1981年   126篇
  1980年   88篇
  1979年   133篇
  1978年   79篇
  1977年   76篇
  1976年   71篇
  1974年   77篇
  1973年   67篇
  1972年   69篇
  1970年   47篇
排序方式: 共有10000条查询结果,搜索用时 7 毫秒
991.
Economic appraisals have often relied heavily on the factor use and factor price characteristics of process. In this article we treat impact of product characteristics in choice of technology. Product characteristics are specially important in the earlier stages of manufacturing, namely, commodity processing. The study elaborates also on circumstances which lead to the emergence of different and fluctuating relationships between product prices in different countries, respectively, developing and developed, and their implication for the choice of technology in these countries.  相似文献   
992.
993.
994.
995.
996.
997.
998.
In the period before the 2007–2008 elections, there was much talk from the regime about the danger of a ‘coloured revolution’ in Russia. The article considers whether the fear of revolution was genuine or artificially created to discredit opposition and strengthen support for the regime. It seems that tensions inside the regime and the unexpected occurrence of the previous coloured revolutions led to real fears of revolution in Russia, although this was in fact unlikely. Russian policy towards the West and the rival election programmes are examined to investigate whether the regime was creating an ‘enemy image’ of the West.  相似文献   
999.
Stakeholders are demanding nonprofit organizations (NPOs) continually improve and work effectively in an ever-changing environment. While there are many ways to approach this operational challenge, this paper examines the impact of acquiring an accountability certification, specifically the Standards for Excellence® Certification. Using a sample of 102 NPOs that have received the Standards for Excellence certification, we find that the certification is associated with increases in public support relative to a control group that did not receive the certification. These results suggest that some stakeholders favorably respond to the certification process, and NPOs can realize tangible benefits from becoming certified.  相似文献   
1000.
We examine the association between calorie-based indicators and experiential indicators of food security using data from slum households of Kolkata surveyed in 2010–2011. Experiential indicator is constructed following the United States Household Food Security Survey Module. Calorie based indicator is constructed using household-specific calorie norms. Modelling techniques take account of potential endogeneity in the relationship. The two indicators are aligned in the same direction implying more accurate targeting. However, there is a lack of one-to-one correspondence between the two measures and the drivers of calorie deprivation and food insecurity also differ, suggesting a one-size-fits-all policy cannot address both concerns simultaneously.  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