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   7605篇
  免费   257篇
各国政治   384篇
工人农民   309篇
世界政治   604篇
外交国际关系   368篇
法律   4270篇
中国政治   37篇
政治理论   1790篇
综合类   100篇
  2023年   48篇
  2021年   48篇
  2020年   105篇
  2019年   130篇
  2018年   203篇
  2017年   179篇
  2016年   218篇
  2015年   127篇
  2014年   163篇
  2013年   862篇
  2012年   212篇
  2011年   231篇
  2010年   171篇
  2009年   201篇
  2008年   211篇
  2007年   232篇
  2006年   198篇
  2005年   189篇
  2004年   196篇
  2003年   182篇
  2002年   166篇
  2001年   282篇
  2000年   282篇
  1999年   207篇
  1998年   108篇
  1997年   108篇
  1996年   104篇
  1995年   97篇
  1994年   100篇
  1993年   87篇
  1992年   158篇
  1991年   151篇
  1990年   177篇
  1989年   161篇
  1988年   170篇
  1987年   148篇
  1986年   124篇
  1985年   133篇
  1984年   103篇
  1983年   92篇
  1982年   83篇
  1981年   83篇
  1980年   72篇
  1979年   63篇
  1978年   50篇
  1977年   34篇
  1976年   37篇
  1975年   40篇
  1974年   50篇
  1973年   35篇
排序方式: 共有7862条查询结果,搜索用时 15 毫秒
81.
This report assesses the effects on peripheral oxygen saturation and heart rate that positional restraint induces when a person is prone, handcuffed, and "hog-tied." Peripheral oxygen saturation and heart rate were monitored at rest, during exercise, and during recovery from exercise for 10 adult subjects. The effects of positional restraint produced a mean recovery time that was significantly prolonged. Consequently, the physiological effects produced by positional restraint should be recognized in deaths where such measures are used.  相似文献   
82.
This Article analyzes the development and complexities of the antitrust state action doctrine and the Local Government Antitrust Act as these doctrines apply to both "municipalities" and private entities. The restructuring of a public hospital is used as a model to facilitate the antitrust analysis. The restructuring model, which typically involves the leasing of a hospital facility by a public entity to a private nonprofit corporation, offers the unique opportunity to compare the different standards employed under the state action doctrine and the Local Government Antitrust Act. As a practical matter, the Article provides a framework for a public hospital to evaluate the impact of corporate restructuring on its antitrust liability exposure and to develop strategies to minimize antitrust risks.  相似文献   
83.
84.
85.
The United States today faces a loss of influence as a world power, a reduction in American independence as a policymaker, and a decline in the standard of living on which Americans have come to depend. History teaches that nations weaker and less productive than the United States can rise to become economic powerhouses and rapidly increase their standards of living. History also teaches that nations failing to recognize their fundamental problems will inevitably decline. American politicians must face what is abundantly clear: the United States is losing ground and must act quickly to reverse its course. This White Paper outlines what must be done. Information about the nation's current status must be analyzed and communicated. Incentives to improve the level of competence in government must be provided and maintained. The emphasis of government policy must be changed to reflect broad economic and technological interests as opposed to special interests. Savings must be encouraged and increased. Infrastructure must be improved Tax laws must be modified to help bring these changes about. Economic and technological issues must be elevated to the importance they require. American thinking must reflect the new realities: that the age of leadership through military power is over, that the requirements for success in the world of the 1990s and beyond require a sound and growing economy that is internationally competitive. The US can accomplish these goals only through foundation-shaking, comprehensive, fundamental changealong the lines we propose herein.This paper is the executive summary (with minor editing modifications) of a white paper that is available from Cornell University's Johnson Graduate School of Management.  相似文献   
86.
87.
88.
The authors present a method to separate and preserve stomach contents for forensic purpose. Analysis by "sieve tower" technique is simple and quickly done during autopsy. Solid phases of stomach content are arranged size up and can be stored for subsequent examinations. With the fluid phase drug analysis or microscopic analysis to confirm identy of the foodstuffs may be done. By adding alcohol (70%) enzymatic digestion and bacterial degradation of the stomach content are stopped.  相似文献   
89.
90.
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