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   10636篇
  免费   554篇
各国政治   427篇
工人农民   371篇
世界政治   815篇
外交国际关系   306篇
法律   7154篇
中国共产党   1篇
中国政治   55篇
政治理论   2018篇
综合类   43篇
  2021年   61篇
  2020年   193篇
  2019年   234篇
  2018年   239篇
  2017年   300篇
  2016年   300篇
  2015年   246篇
  2014年   278篇
  2013年   1001篇
  2012年   236篇
  2011年   307篇
  2010年   290篇
  2009年   302篇
  2008年   288篇
  2007年   257篇
  2006年   278篇
  2005年   254篇
  2004年   252篇
  2003年   236篇
  2002年   246篇
  2001年   465篇
  2000年   419篇
  1999年   296篇
  1998年   183篇
  1997年   150篇
  1996年   125篇
  1995年   117篇
  1994年   146篇
  1993年   132篇
  1992年   202篇
  1991年   225篇
  1990年   205篇
  1989年   216篇
  1988年   209篇
  1987年   195篇
  1986年   232篇
  1985年   209篇
  1984年   164篇
  1983年   173篇
  1982年   116篇
  1981年   121篇
  1980年   86篇
  1979年   132篇
  1978年   75篇
  1977年   74篇
  1976年   71篇
  1974年   75篇
  1973年   68篇
  1972年   67篇
  1970年   46篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
42.
43.
Congress and the Drug Enforcement Administration have assigned certain psychoactive substances to one of five schedules, based on assumed or demonstrated abuse potential. Although formidable difficulties exist in assessing the hazards of drug use, some of these assignments do not appear consistent with empirical estimates. This mismatch of assignment and abuse potential -possibly due to "radical" political ideology - obscures significant differences in drug effects, and therefore stifles meaningful public participation in evaluating the benefits, risks, and proper use (if any) of available psychoactive substances.  相似文献   
44.
Alas poor yorick     
  相似文献   
45.
All records from the Danish Medicolegal Council concerning drivers suspected for drug influences were examined for the 5 year period 1981-1985. 461 records were included, 62 women and 399 men. In 250 cases drugs from more than one of ten groups had been taken thus making 786 combinations of drug/driving. The major drug group was benzodiazepines, accounting for 65% of all drug intake. Opioids also contributed substantially, found in 38% of the cases. A traffic accident had occurred in 180 (39%) of the records. Drivers who had been taking antidepressives were involved in an accident in 67%, significantly above the mean. For benzodiazepines, the corresponding percentage was 43%, while for opioids it was only 23%, significantly below the mean. This striking difference has been demonstrated in most of the studies concerning drugs in traffic. It may support the hypothesis that opioids do not necessarily make driving dangerous, as do antidepressives, barbiturates and especially benzodiazepines.  相似文献   
46.
In the current study the objective was to find to what extent a reliable determination of age at death is made possible by establishing the degree of aspartic acid racemization in the dentin of teeth. The results of the investigation of 46 teeth are in agreement with the values found by other authors. The method presented makes a reproducible and accurate estimation of age possible. We intend to elaborate and improve this promising method for determination of age at death. The relevant points are presented here.  相似文献   
47.
This paper addresses the changing role of the Portuguese state, the present priority assigned to the process of reform and the new challenges to be overcome by public administration. Such processes are demanding a new agenda for education and research in public administration sciences, shifting from the public law paradigm to an interdisciplinary problem‐solving approach and giving special attention to 10 key areas of study, which we describe in the final section of the paper. It should be noted here that the opinions expressed in this paper do not necessarily reflect the position of their institutions.  相似文献   
48.
How realistic are democratic-governance strategies that emphasize local governance as a key component? Using Nigeria’s experience in local government and primary health care in the 1980s and 1990s as a case example, the article finds there were substantial shortfalls in local participation and program performance. These were caused by problems in the local political environment and local institutional design, in the national policy environment (particularly in the funding system), and by the stresses of structural adjustment, resource shortfalls, the natural physical environment, and weak leadership. These combined to create poor and inappropriate reward structures and lack of accountability. However, even though the Nigerian case was not successful, most of the specific problems that hurt it are remediable through policy changes at the national level. Several of these were under consideration at the time of the coups of 1992 and 1993.  相似文献   
49.
50.
Weissert  Carol S. 《Publius》1992,22(3):93-109
Rapidly escalating health-care inflation and congressionallymandated expansions have led to large increases in spendingfor Medicaid, the federal-state program of health care for thepoor. These increases came at a time when state budgets werealready under recession-induced stresses. In addition, 1991brought new pressures for Medicaid spending from the courtsand closer federal scrutiny and control over revenues used forthe program's state "match." Yet the Medicaid picture is farfrom bleak. Diversity, innovation, and an emerging stale policyrole also characterize the program in ways that epitomize thestrengths and weaknesses of the American intergovernmental system.  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