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   647篇
  免费   31篇
各国政治   85篇
工人农民   51篇
世界政治   63篇
外交国际关系   38篇
法律   275篇
中国政治   22篇
政治理论   139篇
综合类   5篇
  2023年   5篇
  2022年   5篇
  2021年   9篇
  2020年   6篇
  2019年   28篇
  2018年   29篇
  2017年   35篇
  2016年   36篇
  2015年   19篇
  2014年   18篇
  2013年   148篇
  2012年   17篇
  2011年   26篇
  2010年   14篇
  2009年   14篇
  2008年   22篇
  2007年   17篇
  2006年   17篇
  2005年   9篇
  2004年   14篇
  2003年   10篇
  2002年   23篇
  2001年   11篇
  2000年   13篇
  1999年   12篇
  1998年   8篇
  1997年   4篇
  1996年   3篇
  1994年   9篇
  1992年   9篇
  1991年   5篇
  1990年   7篇
  1989年   5篇
  1987年   8篇
  1985年   3篇
  1984年   5篇
  1983年   5篇
  1982年   3篇
  1981年   4篇
  1980年   2篇
  1979年   5篇
  1978年   3篇
  1977年   2篇
  1975年   3篇
  1973年   2篇
  1972年   4篇
  1971年   2篇
  1970年   2篇
  1967年   2篇
  1966年   3篇
排序方式: 共有678条查询结果,搜索用时 15 毫秒
671.
Development implies goals and the positing of goals requires values. Economists have generally agreed that the increase of wealth (or perhaps welfare) is the proper object of economic development. Political scientists, probably happily, have no similar agreement in regard to the appropriate goal for political development. Moreover, it is doubtful that the various aspects of political change are located along a single continuum. This is an empirical question but investigation ought to begin at least with provision for an n‐dimensional space. Finally, political scientists should concentrate on political change that has too often been neglected in favour of economic and purely social change.  相似文献   
672.
Inverse Productivity or Inverse Efficiency? Evidence from Mexico   总被引:2,自引:0,他引:2  
Using a unique panel data set from rural Mexico, we find strong evidence of a negative relationship between farm size and both productivity and technical efficiency: large farms not only have a lower value of output per hectare than small farms, they also produce further from the efficiency frontier. Our findings suggest that, in spite of the ongoing transformation of agricultural supply chains and economists’ recommendations for small farmers to exit crop production, there may be sustained advantages for smallholder farms. Our analysis offers new insights into inverse-farm size relationship, the productivity–efficiency relationship, and the use of stochastic frontier techniques.  相似文献   
673.
This article examines the impact and magnitude of underinvestment in the public infrastructure of the economy of the United States, and points to its implications for deficit reduction and economic growth. It becomes evident that the lack of both a complete inventory of infrastructure investment needs and a coherent future investment strategy at the federal level have led to a situation where the volume of public works investment in the United States has fallen critically short of what may be considered an optimum level. Recognizing the limitations of capital budgeting, a management perspective is taken in which increased planning and policy development at the national level emerge as necessities in achieving the type of results required to enhance economic growth and responsibly reduce the national deficit.  相似文献   
674.
Based upon over 20 hours of focus groups and in-depth interviews with diverse representation from three Palestinian refugee camps in Lebanon, the authors analyse Palestinian perceptions of both Lebanese and Palestinian security institutions, detailing the ways in which conventional, state-centric approaches to security by both parties have been insufficient. Special attention is paid to the new security regime in the Nahr al-Bared camp, which was destroyed in 2007 during a protracted battle between the Lebanese army and the militant Islamist group Fatah al-Islam. This is because the Government of Lebanon has made clear its intention that this regime serve as a model for the country's other 11 camps. Ultimately, the authors argue, Palestinian human security is inextricably linked to Lebanese sovereignty and national security, and the improvement of Palestinian human security will yield tangible security benefits for Lebanese and Palestinians alike. Rather than presume to speak on behalf of all Palestinians in Lebanon, the authors have instead opted to present detailed—and sometimes contradictory—quotations from Palestinians interviewed on such subjects as arms, violent extremism, Lebanese–Palestinian relations and the protection of human rights.  相似文献   
675.
In Wellesley v Withers, the Court of Appeal held that where a defendant is concurrently liable in tort and contract, the contractual rules for the remoteness of loss must apply. Two principal reasons emerge from the judgments. The first, that each party has had the chance to alert the other to unusual risks, is valid but often unconvincing. The second is more original and compelling: that the nature of any responsibility assumed in tort is distinct from, but wholly defined by, the valid contract. This note seeks to develop that argument. It then addresses the uncertain issue of concurrent liability in equity. It suggests that in a case in which any fiduciary duties arise out of, and are defined by, a valid contract, it may now be appropriate to apply the contractual remoteness rules to a concurrent claim for breach of contract and equitable compensation.  相似文献   
676.
677.
678.
Knowledge generated in universities can serve as an important base for the commercialization of innovation. One mechanism for commercialization is the creation of a new company by a scientist. We shed light on this process by examining the role of scientist characteristics, access to resources and key university conditions in driving the likelihood of a scientist to start a company. Our sample comprises 1,899 university scientists across six different scientific fields. We make a methodological contribution by using self-reported data from the scientists themselves, whereas most previous research relied on university or public data. Our consideration of six scientific fields is a substantive contribution and reveals that scientist startups are heterogeneous in nature. Our findings are largely consistent with extant research on the role of individual and university variables in scientist entrepreneurship; in addition, we uncover the novel finding that the type of research field is also a key driver of scientist startup activity.  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