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   4585篇
  免费   213篇
各国政治   280篇
工人农民   136篇
世界政治   455篇
外交国际关系   259篇
法律   2070篇
中国共产党   1篇
中国政治   22篇
政治理论   1526篇
综合类   49篇
  2021年   26篇
  2020年   54篇
  2019年   64篇
  2018年   111篇
  2017年   129篇
  2016年   153篇
  2015年   96篇
  2014年   95篇
  2013年   699篇
  2012年   131篇
  2011年   108篇
  2010年   134篇
  2009年   148篇
  2008年   145篇
  2007年   148篇
  2006年   140篇
  2005年   136篇
  2004年   133篇
  2003年   123篇
  2002年   119篇
  2001年   76篇
  2000年   95篇
  1999年   75篇
  1998年   109篇
  1997年   81篇
  1996年   47篇
  1995年   79篇
  1994年   70篇
  1993年   73篇
  1992年   73篇
  1991年   60篇
  1990年   59篇
  1989年   67篇
  1988年   67篇
  1987年   81篇
  1986年   66篇
  1985年   82篇
  1984年   68篇
  1983年   60篇
  1982年   57篇
  1981年   54篇
  1980年   42篇
  1979年   46篇
  1978年   38篇
  1977年   36篇
  1976年   28篇
  1975年   23篇
  1974年   25篇
  1973年   25篇
  1969年   20篇
排序方式: 共有4798条查询结果,搜索用时 62 毫秒
121.
122.
Robert Rosenman 《Public Choice》2011,147(1-2):173-188
Lifestyle can often affect the likelihood an individual will have a future illness. Subsidies often mitigate the consequences of poor lifestyle choices. In this paper we explore tax-subsidy policies that lower the consequences of incurring ill health. We find that a funding mechanism consistent with current US policy lowers the investment in healthy lifestyles by both the wealthy, who pay taxes, and the poor, who receive subsidies. We also explore alternative policy interventions such as investing in research to lessen the impact or probability of the disease.  相似文献   
123.
124.
125.
126.
127.

China’s rise as a global power corresponded with a diminution of Taiwanese diplomacy, which has left Central America as the last region to host a continuous bloc of countries that recognize the ROC. In this article, we argue that China’s success in gaining diplomatic recognition from Taiwan’s former allies has largely resulted from China's economic policy, specifically its promises of large-scale infrastructure projects and the integration of Central American economies with Chinese markets. However, there are limits to how far China has advanced in gaining full recognition from the region. The competing political and economic interests of China, Taiwan, the United States, and the Central American countries themselves, continue to influence patterns of diplomatic switching. More specifically, we argue that the threat of punitive measures from the United States combined with a turn in Taiwanese diplomacy toward assistance efforts to combat Covid-19 may deter future switching in the short to medium-term. Our analysis offers case studies of four Central American countries (Costa Rica, Panama, El Salvador and Nicaragua) to illustrate the multi-year processes by which China’s economic strategy leads to diplomatic switching and examine the paths ahead for the remaining holdouts facing the prospect of economic and political penalties by the United States.

  相似文献   
128.
This paper traces a new development in regulation that encourages utilities to engage more directly with their customers. We make four contributions: First, we perform a comprehensive analysis of how regulators are using customer engagement, and offer a simple model for understanding different customer engagement initiatives. Second, we review assessments of customer engagement. We find that there are no quantitative, empirically robust assessments of the effectiveness of customer engagement as a regulatory tool. Third, we develop two detailed case studies of an energy regulator and a water regulator that are in the forefront of customer engagement efforts. We find that there is no direct link between the engagement strategy used and the economic incentives received by a firm. Finally, we propose a framework for improving the customer engagement process. The new framework relies on microeconomics, modern tools of program evaluation, and supplying the regulated firm with direct incentives to engage with the customer.  相似文献   
129.
130.
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