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   636篇
  免费   43篇
各国政治   22篇
工人农民   39篇
世界政治   42篇
外交国际关系   40篇
法律   336篇
中国政治   15篇
政治理论   181篇
综合类   4篇
  2023年   8篇
  2022年   8篇
  2021年   4篇
  2020年   13篇
  2019年   39篇
  2018年   36篇
  2017年   34篇
  2016年   32篇
  2015年   25篇
  2014年   28篇
  2013年   76篇
  2012年   37篇
  2011年   32篇
  2010年   21篇
  2009年   34篇
  2008年   26篇
  2007年   30篇
  2006年   29篇
  2005年   14篇
  2004年   23篇
  2003年   14篇
  2002年   16篇
  2001年   12篇
  2000年   7篇
  1999年   9篇
  1998年   5篇
  1997年   5篇
  1996年   2篇
  1995年   3篇
  1994年   3篇
  1993年   4篇
  1992年   6篇
  1991年   5篇
  1990年   4篇
  1989年   3篇
  1988年   2篇
  1986年   2篇
  1985年   4篇
  1984年   2篇
  1981年   3篇
  1980年   2篇
  1979年   2篇
  1976年   2篇
  1971年   1篇
  1970年   1篇
  1969年   1篇
  1968年   2篇
  1967年   2篇
  1966年   1篇
  1945年   1篇
排序方式: 共有679条查询结果,搜索用时 15 毫秒
61.
62.
63.
64.
65.
Since 1998, over 5500 people have died while attempting to cross the U.S.–Mexico border without authorization. These deaths have primarily occured in the Arizona desert. Despite the high volume of deaths, little experimental work has been conducted on Sonoran Desert taphonomy. In this study, pig carcasses were used as proxies for human remains and placed in different depositional contexts (i.e., direct sunlight and shade) that replicate typical sites of migrant death. Decomposition was documented through daily site visits, motion-sensitive cameras and GIS mapping, while skeletal preservation was investigated through the collection of the remains and subsequent faunal analysis. Our results suggest that vultures and domestic dogs are underappreciated members of the Sonoran scavenging guild and may disperse skeletal remains and migrant possessions over 25 m from the site of death. The impact of scavengers and the desert environment on the decomposition process has significant implications for estimating death rates and identifying human remains along the Arizona/Mexico border.  相似文献   
66.
The complexity of the modern information ecosystem raises many questions for public organizations. In the context of emergency management, information (such as warning messages) is communicated not only from a source of authority to the public but also between members of the public. The authors use a series of storms that affected Oklahoma in the spring of 2016 to test propositions related to how information about tornado warnings reached the public and who received and shared information about the storm, as well as to identify how gender and age mediate the influence that exposure to an extreme weather event has on the sharing of this information. Overall, the authors find that reported exposure to a tornado increases information sharing through a variety of media and technology. The effect of the tornado erases the otherwise present gender gap in sharing information, while it has little effect on the media platforms that are most popular among older respondents.  相似文献   
67.
In this issue New Political Science begins a new tradition, printing an extended review essay of the book that received the Michael Harrington Book Award at the most recent American Political Science Association Meeting. The Michael Harrington Award is given for an outstanding book that demonstrates how scholarships can be used in the struggle for a better world. In 2011, the award went to Michelle Alexander for her book The New Jim Crow: Mass Incarceration in an Age of Color-Blindness. Sanford Schram, a member of the award committee, has contributed the below review.  相似文献   
68.
69.
70.
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