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   23696篇
  免费   667篇
各国政治   1092篇
工人农民   851篇
世界政治   1888篇
外交国际关系   881篇
法律   14280篇
中国共产党   3篇
中国政治   93篇
政治理论   5013篇
综合类   262篇
  2020年   280篇
  2019年   338篇
  2018年   460篇
  2017年   549篇
  2016年   579篇
  2015年   404篇
  2014年   471篇
  2013年   2435篇
  2012年   605篇
  2011年   611篇
  2010年   483篇
  2009年   523篇
  2008年   621篇
  2007年   626篇
  2006年   604篇
  2005年   528篇
  2004年   552篇
  2003年   566篇
  2002年   530篇
  2001年   919篇
  2000年   836篇
  1999年   688篇
  1998年   351篇
  1997年   334篇
  1996年   271篇
  1995年   276篇
  1994年   321篇
  1993年   284篇
  1992年   470篇
  1991年   509篇
  1990年   455篇
  1989年   483篇
  1988年   445篇
  1987年   453篇
  1986年   474篇
  1985年   438篇
  1984年   392篇
  1983年   421篇
  1982年   317篇
  1981年   302篇
  1980年   232篇
  1979年   333篇
  1978年   220篇
  1977年   196篇
  1976年   180篇
  1975年   180篇
  1974年   210篇
  1973年   186篇
  1972年   166篇
  1971年   149篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
In the case of suspicious deaths, the technique of 1:1 taping is often used in Belgium. It consists of affixing a large number of adhesive tapes to the body of the victim. It is conventionally aimed at obtaining microtraces (e.g., fibers, hair) and is usually not used for DNA analysis. However, in some cases, DNA analysis of certain areas of interest identified on the 1:1 taping material can offer a last resort solution. The four-step method that is described in this article involves the selection of areas of interest on the body (Step 1), the selection of the corresponding tapes (Step 2), the decontamination of the tapes (Step 3), the selection of areas of interest on the tapes, for DNA sampling (Step 4). The method is illustrated by its successful application in four murder cases. In each case, DNA profiles of good quality could be identified, including profiles of persons different from the victim.  相似文献   
972.
Novel psychoactive substances (NPS) are synthetic drugs that pose serious public health and safety concerns. A multitude of NPS have been identified in the United States, often implicated in forensic investigations. The most common and effective manner for identifying NPS is by use of mass spectrometry and the true utility lies within nontargeted acquisition techniques. During this study, a liquid chromatography quadrupole time-of-flight mass spectrometry (LC-QTOF-MS) assay was developed, validated, and implemented for forensic toxicology testing. A SCIEX TripleTOF™ 5600 + with SWATH® acquisition was used. Resulting data were compared against an extensive library database containing more than 800 compounds. The LC-QTOF-MS assay was applied to the reanalysis of biological sample extracts to discover emergent NPS. More than 3,000 sample extracts were analyzed, and more than 20 emerging NPS were detected for the first time. Among these were isopropyl-U-47700, 3,4-methylenedioxy-U-47700, fluorofuranylfentanyl, N-methyl norfentanyl, 2F-deschloroketamine, 3,4-methylenedioxy-alpha-PHP, eutylone, and N-ethyl hexedrone.  相似文献   
973.
Journal of Experimental Criminology - This paper reports a quasi-experimental evaluation of California’s 1996 medical marijuana law (MML), known as Proposition 215, on statewide motor vehicle...  相似文献   
974.

The aim of this paper is to examine the influence of the right to information laws on sustainability transparency in European local governments. This goal is novel, in that previous studies have examined the effects of various factors on the dissemination of government information (demographic, socioeconomic, political and financial) but not the contribution of legal factors to online transparency on environmental, social and economic sustainability. Our research question is this: Do information laws contribute to transparency on sustainability? Using the Global Reporting Initiative guidelines and a statistical regression analysis, we studied the websites of 106 local governments in ten European countries. The results obtained show that when transparency laws clearly stipulate the rules applicable and the procedures established for appeals, exceptions, refusals and requests, this can favour transparency on environmental, social and economic sustainability. Our findings advance understanding of this field and reinforce the basis for legal reforms to enhance sustainability transparency.

  相似文献   
975.
976.
977.
This article describes how issue specialization through deliberative institutions called “issue publics” can improve the quality of democratic decision making. Issue specialization improves decisions by instantiating a cognitive division of labor among the mass public, which creates efficiencies in decision making and grants large groups of average citizens a scalable advantage over small groups of even the smartest and most capable individuals. Issue specialization further improves decisions by capturing issue-specific information, concentrating it within the specialized deliberative enclaves of issue publics, and refining citizens’ issue preferences. These advantages are brought to bear in wider democratic politics and policy through information shortcuts and through the specialized electoral incentives of representatives. The article responds to concerns about political ignorance, polarization/partisanship, rent seeking, and socioeconomic bias and argues that issue specialization can provide a valuable brake to polarization yet needs institutional supplementation to engage marginalized citizens and combat bias.  相似文献   
978.
History has taught us that the Global North's attempts to ‘civilise' the rest of the world's population, both now and in colonial times, have been fraught with difficulty. This paper argues that this difficulty is mainly owing to the political standpoint and positioning of our perceived engineering and technical superiority. A failure to recognise this viewpoint and to change the way in which we work together—in a global sense—to solve issues such as climate change, threatens our ability to survive as a species. Political standpoints on such issues still assume a superiority of governments in the Global North. This paper retraces colonial engineering projects, mainly directed from the UK, that failed to consider the development of other populations in the world, and their needs. It is also posited that our exploitation in the Global North, which assumes historical superiority as a basic premise, will fail in tackling major issues. Change is needed through a decolonisation of engineering projects, and western engineering curricula that are used to train future professionals. Evidence of the impact of decolonisation on the engineering discipline itself is scarce, but nevertheless, a response is needed to ensure that a more inclusive curriculum and narrative is developed.  相似文献   
979.
Populism studies finds itself in a crisis of originality. While some scholars have signalled over-usage, others have argued that by contextualising populism, we are able to specify our own ‘populist moment’ and remedy the term’s slipperiness. This article opts for the latter tactic through a comparison of two aspects of contemporary populism with late nineteenth century precedents. In the late nineteenth century, the American People’s Party pioneered a mode of mass politics anchored in agrarian and industrial labour which launched the term ‘populism’ in Western discourse. Contemporary populists show rhetorical and political overlap with this template, but also come up against two new constraints: (1) a stagnant capitalism increasingly centred on ‘rentiership’; and (2) a disorganised civil society. These factors render today’s populism resistant to analogy but also conceptually more specific, sharpening the contours of our populist moment.  相似文献   
980.
Boettke  Peter J.  Candela  Rosolino A. 《Public Choice》2020,182(3-4):331-352
Public Choice - This paper reconceptualizes and unbundles the relationship between public predation, state capacity and economic development. By reframing our understanding of state capacity theory...  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