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   890篇
  免费   29篇
各国政治   61篇
工人农民   62篇
世界政治   75篇
外交国际关系   39篇
法律   424篇
中国政治   51篇
政治理论   201篇
综合类   6篇
  2023年   7篇
  2022年   4篇
  2021年   12篇
  2020年   21篇
  2019年   26篇
  2018年   35篇
  2017年   33篇
  2016年   37篇
  2015年   17篇
  2014年   23篇
  2013年   158篇
  2012年   23篇
  2011年   21篇
  2010年   20篇
  2009年   23篇
  2008年   27篇
  2007年   23篇
  2006年   19篇
  2005年   19篇
  2004年   17篇
  2003年   19篇
  2002年   25篇
  2001年   8篇
  2000年   19篇
  1999年   14篇
  1998年   10篇
  1997年   8篇
  1996年   12篇
  1995年   17篇
  1994年   14篇
  1993年   13篇
  1992年   9篇
  1991年   14篇
  1990年   17篇
  1989年   10篇
  1988年   10篇
  1987年   10篇
  1986年   11篇
  1985年   13篇
  1984年   11篇
  1983年   12篇
  1982年   16篇
  1981年   7篇
  1980年   4篇
  1978年   4篇
  1977年   6篇
  1976年   10篇
  1975年   5篇
  1972年   4篇
  1968年   4篇
排序方式: 共有919条查询结果,搜索用时 15 毫秒
81.
Graduate programs in public policy offer a variety of ethics courses focusing on framework theories, topical applications, and duties of office. Brown gives four reasons for making these types of courses an integral part of education for public service: they provide a common civic vocabulary; they give an essential perspective on analytical techniques; they challenge students' own presuppositions about public policy; and they help distinguish between empirical and conceptual issues. He argues that the growing emphasis in the policy programs on public management further enhances the importance of education in ethics, and that the current dearth of such courses in some programs seriously impedes their graduates.  相似文献   
82.
Environmental samples from indoor surfaces can be confounded by dust, which is composed largely of human skin cells and has been documented to contain roughly tens of micrograms of total DNA per gram of dust. This study complements previous published work by providing estimates of the quantity of amplifiable human DNA found in environmental samples from a typical indoor environment, categorized by the intensity of human traffic and visible quantity of dust. Dust was collected by surface swabbing standard 576 cm2 areas in eight locations, and evaluated for total DNA quantity, presence of human DNA (mitochondrial and nuclear loci using conventional PCR), quantity of human nuclear DNA using quantitative PCR, and STR analysis. The total DNA content of 36 dust samples ranged from 9 to 28 ng/cm2, and contained 0.2–1.1 pg/cm2 of human DNA. Overall, human DNA was detected in 97% of 36 dust samples and 61% of samples yielded allele distributions of varying degrees of complexity when subjected to STR analysis. The implications of this study are twofold. First, the presence of dust in evidence can be a significant contamination source in forensic investigations because the human DNA component is of sufficient quality and quantity to produce allele calls in STR analysis. This can be effectively managed by implementing stringent protocols for collection and analysis of potential biological samples. A second implication is the use of dust as a source of evidence for identification of inhabitants within a defined location. In the latter case, a number of additional studies would be necessary to identify relevant pretreatments for environmental dust samples and to develop the necessary deconvolution techniques to separate the composite genotypes obtained.  相似文献   
83.
本文概览了澳大利亚、加拿大、新西兰、香港等四个主要的环太平洋普通法系国家和地区的传闻法律改革,尤其关注与先前不一致陈述相关的改革。指出先前不一致陈述事关"被告人获得公平对待"以及"证人的人权"等基本原则,因此,如何对待先前不一致陈述将成为一项有效的指标,通过该指标。我们得以评价传闻法律改革中的关键原则以及个人权利在大多数严重犯罪的起诉、审判过程中的境况。认为无论借助成文法还是借助先例,公正的传闻法改革应当适用某些相互一致的基本原则,包括放宽采纳传闻的条件决不能以错案数量增长或不公正审判为代价,将传闻改革与保护被告人、证人的基本权利紧密联系起来,保护证人不受任何形式的强迫或不当侦查行为的干扰,辩护律师必须能够无拘束地对陈述可采性加以质疑,通过充分、及时地开示证据来分析有争议的证据的可采性等。  相似文献   
84.
85.
86.
87.
88.
89.
90.
Recently declassified materials have revealed the existence of a previously unknown network of Austrian communists in pre-war England. The group of young well-educated Viennese used unsuspecting social contacts and marriages of convenience to establish itself. Analysis of this network reveals some previously overlooked similarities between the ‘Cambridge’ spies Kim Philby and Alan Nunn May, as well as the emergence of a new nuclear spy, Engelbert Broda. Their wartime espionage as individuals took place at a time when non-communist British scientists were promoting the international sharing of atomic knowledge through unofficial channels. The newly released files reflect a characteristic preference of the British secret services for intelligence gathering rather than intervention and illustrate how vital leads follow from apparently trivial observations.  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