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   68438篇
  免费   2995篇
各国政治   4458篇
工人农民   2843篇
世界政治   6145篇
外交国际关系   3783篇
法律   31870篇
中国共产党   9篇
中国政治   752篇
政治理论   20632篇
综合类   941篇
  2021年   404篇
  2020年   1154篇
  2019年   1510篇
  2018年   1659篇
  2017年   1952篇
  2016年   2152篇
  2015年   1819篇
  2014年   2095篇
  2013年   10478篇
  2012年   1599篇
  2011年   1704篇
  2010年   1808篇
  2009年   2047篇
  2008年   1713篇
  2007年   1695篇
  2006年   1880篇
  2005年   1773篇
  2004年   1659篇
  2003年   1455篇
  2002年   1514篇
  2001年   1629篇
  2000年   1370篇
  1999年   1242篇
  1998年   1110篇
  1997年   987篇
  1996年   952篇
  1995年   920篇
  1994年   923篇
  1993年   949篇
  1992年   981篇
  1991年   1016篇
  1990年   954篇
  1989年   975篇
  1988年   963篇
  1987年   981篇
  1986年   966篇
  1985年   1031篇
  1984年   949篇
  1983年   984篇
  1982年   886篇
  1981年   835篇
  1980年   659篇
  1979年   704篇
  1978年   590篇
  1977年   527篇
  1976年   490篇
  1975年   407篇
  1974年   413篇
  1973年   416篇
  1972年   361篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
301.
In the presented oversight model, in which a regulatory agency may collude with regulatees, a watchdog organization may scrutinize the agency’s decision-making and find evidence speaking for collusive behavior. Found evidence is of a specific, stochastic quality. Courts will overturn the administrative decision when the evidence presented in court exceeds a minimum quality standard set by the political principal. Lowering the quality standard increases the odds of finding evidence of sufficient quality and, hence, leads to increasing collusion deterrence and to a lower probability of acquitting collusive administrators (type I error), but also to a higher probability of convicting an innocent administrator (type II error). It is shown that, when welfare-maximization gives rise to an interior solution, the welfare-maximizing standard of evidence is lower than the one that merely minimizes the costs of legal errors without taking deterrence costs into account, but will imply incomplete deterrence. However, conditions can and will be identified under which both error cost minimization and complete deterrence coincide with welfare-maximization.  相似文献   
302.
303.
目的 建立用高效薄层色谱法定性及半定量测定人尿中硝西泮的代谢物7-氨基硝西泮(7ANIZ)含量的方法。方法 人口服治疗量10 mg硝西泮后,在pH 9条件下用乙醚进行提取,分析物斑点用氟罗里丝进行荧光显色,紫外灯下(366nm)观察荧光斑点;根据斑点荧光显色情况及强度进行7ANIZ定性及半定量检测。结果 尿中硝西泮代谢物7ANIZ检出限为5 ng/ml,测量限为15 ng/ml。结论 人口服治疗量10 mg硝西泮,用高效薄层色谱法可定性及半定量测定48 h内排泄尿中的7ANIZ。  相似文献   
304.
The population-adjusted rate of teenage suicide in King County, Washington, was reviewed for the 26 years from 1959 to 1984. For the entire period, the rate did not change significantly. An abrupt change did occur during the middle of this period, but, for reasons discussed in the text, this may well represent a change in procedures and philosophy of death certification rather than a real change in rate. Reasons for the apparent discrepancy with national statistics are discussed.  相似文献   
305.
306.
307.
This study examined the nature of police response to domestic violence incidents with a focus on the identification of areas of police intervention that female victims of domestic abuse find “most” helpful and “least” helpful. The first part of the study was based on the analysis of a random sample of incident reports of domestic abuse cases recorded in 2000 and 2001. These reports were examined to obtain information about the characteristics of domestic abuse victims and summary information about the incidents of domestic abuse offenses. The second stage of the research study involved a telephone survey conducted with a random sample of fifty female domestic abuse victims who called the police. The study examined female victims' perceptions of how the police responded to the domestic abuse incidents, how helpful or not so helpful victims found the police to be when they responded to their calls, and how their cases were handled by the legal system.  相似文献   
308.
309.
The purpose of this study was to examine the relationship between job demands, job resources, and burnout, and to examine if burnout could predict both work and health-related outcomes among police officers. The participants were 223 Norwegian police officers, and data were collected using a questionnaire. The study was part of a national survey of both health care and non-health care professions. The overall level of burnout was low among police officers compared to other occupational groups tested in Norway. Both job demands and job resources were related to burnout, especially work-family pressure was an important predictor for all of the three burnout dimensions. Burnout predicted individual outcomes, such as psychosomatic complaints and satisfaction with life, as well as work outcomes, such as job satisfaction, intention to quit, and organizational commitment. Suggestions for potential interventions to reduce burnout and negative individual and organizational consequences are presented.  相似文献   
310.
Although law enforcement agencies across the nation have assumed part of the responsibility in the fight against terrorism, significant confusion exists as to the role of local law enforcement. While some agencies have taken steps towards terrorism prevention, little data has been collected on which agencies have taken the greatest steps, how those agencies have changed, and how other agencies should direct their activity. This case study of law enforcement census data from a single state considered variations in terrorism preparedness and predictors of preparedness. Agency size, presence of funding, and other variables significantly predict levels of terrorism preparedness. Important policy implications such as the distribution of funding and which agencies should be working towards terrorism preparedness are discussed.  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