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   330篇
  免费   15篇
各国政治   16篇
工人农民   10篇
世界政治   25篇
外交国际关系   45篇
法律   108篇
中国政治   1篇
政治理论   140篇
  2023年   2篇
  2022年   2篇
  2021年   8篇
  2020年   6篇
  2019年   17篇
  2018年   14篇
  2017年   16篇
  2016年   23篇
  2015年   4篇
  2014年   18篇
  2013年   50篇
  2012年   15篇
  2011年   13篇
  2010年   7篇
  2009年   11篇
  2008年   12篇
  2007年   10篇
  2006年   8篇
  2005年   12篇
  2004年   14篇
  2003年   16篇
  2002年   5篇
  2001年   11篇
  2000年   3篇
  1999年   3篇
  1998年   3篇
  1997年   5篇
  1996年   1篇
  1995年   4篇
  1994年   2篇
  1993年   2篇
  1990年   5篇
  1989年   1篇
  1987年   4篇
  1986年   4篇
  1985年   1篇
  1984年   1篇
  1983年   1篇
  1982年   1篇
  1981年   1篇
  1980年   2篇
  1978年   1篇
  1976年   1篇
  1975年   1篇
  1973年   1篇
  1970年   1篇
  1962年   1篇
  1961年   1篇
排序方式: 共有345条查询结果,搜索用时 15 毫秒
41.
Research underlines the importance of socio-cultural factors when establishing a supportive environment for innovation and entrepreneurship growth. Scholars discuss different aspects, ranging from cultural attitudes and religious norms, to aspects of tolerance and social freedom. Following on research tradition, this paper analyzes the freedom-innovation relationship using a hand collected data set of 57 countries and the 50 U.S. states over a 3 year period. We argue and test whether the slope of the freedom-innovation link is shaped by and trades-off the costs and benefits of either weak or strong social ties within a country. Our empirical findings support a positive relationship between the freedom-innovativeness-slope, but not a negative or inverted U-shaped relationship.  相似文献   
42.
43.
44.
45.
Piracatinga (Callophysius macropterus) are a type of bottom feeder catfish encountered in the Amazon River and its tributaries. We report two cases in which human remains were first located based on a characteristic circular distortion of the surface of the river that the Piracatinga make while they feed. Human skin samples of one of the victims recovered from the Piracatinga digestive tract were subjected to mitochondrial DNA analysis that allowed identification of the body of Case 1; the family recognized body parts of Case 2. Importantly, the location of human body parts and their identification based on DNA analysis enabled the respective families to obtain a death certificate expeditiously in the absence of identifiable remains—a process that normally requires 5 years under current Brazilian law, and in the absence of closure, imposes severe emotional stress on the family of the deceased.  相似文献   
46.
47.
48.
The Dutch practice of negotiated wage restraint and welfare state reform is often held up as a model for effective labour market adjustment. This article examines the distribution of adjustment costs under the Dutch model to determine whether it is stable in the long run ‐ both directly and by analogy with the situation in Belgium. The conclusion is that while the Dutch have succeeded in effecting a remarkable adjustment in the distribution of value‐added, the costs of this adjustment have been skewed against increasingly large sections of society. Should these groups outside the distributional coalition find representation at the national level, the Dutch model for negotiated wage restraint and welfare state reform is likely to revert to political alternation and tit‐for‐tat economic competition.  相似文献   
49.
Military engagement of insurgents risks destruction of religious monuments and historic structures, and political and economic instability that follows armed conflict enables looting of antiquities. In combination, threats to cultural structures and movable cultural patrimony compromise cultural security. This article explores the potential of the art market for open-source intelligence assessments of cultural security. A comparison of the market value of artifacts of different ethnic origins provides a measure of the risk of looting of cultural patrimony by geographic region. Intelligence assessments of the relative desirability of cultural artifacts by region of origin can inform strategic planning to mitigate looting in conflict zones and to alert security services to emerging threats of trafficking in cultural patrimony.  相似文献   
50.
A ‘dual‐dual’ framework is proposed which captures the prevailing regional dualism (between rural and urban areas) and technological dualism (between traditional and modern techniques). Six interdependent sectors are specified: 1) urban formal, 2) urban informal, 3) rural non‐farm formal, 4) rural non‐farm informal, 5) rural farm formal, and 6) rural farm informal. The framework is applied to the case of Puerto Rico and its experience with an ‘industrialisation‐first’ development strategy between 1950 and 1970. It is shown that this framework lends itself well to the analysis of such issues as the pattern of employment, migration, and income distribution among regions and sectors.  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