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   1155篇
  免费   68篇
各国政治   30篇
工人农民   179篇
世界政治   59篇
外交国际关系   35篇
法律   673篇
中国共产党   1篇
中国政治   21篇
政治理论   222篇
综合类   3篇
  2024年   1篇
  2023年   12篇
  2022年   11篇
  2021年   10篇
  2020年   33篇
  2019年   42篇
  2018年   56篇
  2017年   59篇
  2016年   50篇
  2015年   62篇
  2014年   56篇
  2013年   167篇
  2012年   57篇
  2011年   77篇
  2010年   41篇
  2009年   55篇
  2008年   65篇
  2007年   42篇
  2006年   50篇
  2005年   38篇
  2004年   33篇
  2003年   34篇
  2002年   30篇
  2001年   29篇
  2000年   11篇
  1999年   13篇
  1998年   18篇
  1997年   12篇
  1996年   6篇
  1995年   5篇
  1994年   10篇
  1993年   4篇
  1992年   2篇
  1991年   3篇
  1990年   4篇
  1988年   3篇
  1986年   1篇
  1985年   2篇
  1984年   4篇
  1983年   2篇
  1982年   2篇
  1981年   3篇
  1977年   2篇
  1976年   1篇
  1973年   1篇
  1970年   1篇
  1967年   1篇
  1965年   2篇
排序方式: 共有1223条查询结果,搜索用时 15 毫秒
111.
Four fluorescent fingerprint powders (RedWop?, GreenWop?, Basic Yellow?, and Yellow Powder?) were evaluated as a marker for blow fly larvae. Administration methods included ingestion (high vs. low concentration) or topical. Ingestion of high concentrations of Basic Yellow? and RedWop? caused higher larval mortality. Basic Yellow? delayed development and adult emergence while RedWop? and Yellow Powder? had a significant effect on particular stages of development, however, emergence time was not altered. Optimal administration is through ingestion at low concentration levels (<10%) or topically, with GreenWop? demonstrating minimal adverse effects. Optimum wavelength for discrimination between powders was 450 nm. This research can aid in investigative training to increase visibility of larval and pupal blow flies. It can also be used in entomological studies to differentiate between larval blow flies (or other dipteran) species or individuals to further understand complex interactions and behavior during larval development.  相似文献   
112.
113.
Although we know that candidates, parties and governments conduct political market research and engage in heated debate about it, market research in politics remains a largely hidden activity. This article presents the perspectives of practitioners involved in collecting and using market research including advisors to 11 presidents and prime ministers and demonstrates that market analysis in politics is a multi‐varied activity, carried out within a complex context. The over‐simplistic criticism that political marketing means politicians simply follow focus groups needs to be revised, and although poor practice will always occur, practitioners are developing more fluid and mature ways to utilize research in politics. Political market research can play a valuable role in informing the decisions politicians make and enhance the relationship between the government and the public. Copyright © 2015 John Wiley & Sons, Ltd.  相似文献   
114.
115.
116.
117.
118.
119.
120.
This article explores three formats for interstate relations developed by, or at least significantly influenced by Germany in the post-Cold War period: the Petersburg Dialogue, the German–Russian–Polish Trialogue and the Weimar Triangle. An examination of the form and function of each of these formats is followed by a discussion of what these formats have in common and why they are worthy of further study. The paper addresses whether this ‘variable geometry’ of Germany's foreign policy of trust-building is likely to survive a period of turbulent relations or changes in leadership and, furthermore, how the effectiveness of dialogues, trialogues and triangles might be evaluated.  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