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   9962篇
  免费   242篇
各国政治   464篇
工人农民   316篇
世界政治   737篇
外交国际关系   685篇
法律   4940篇
中国共产党   173篇
中国政治   567篇
政治理论   1709篇
综合类   613篇
  2022年   66篇
  2021年   123篇
  2020年   153篇
  2019年   153篇
  2018年   203篇
  2017年   221篇
  2016年   190篇
  2015年   175篇
  2014年   240篇
  2013年   1027篇
  2012年   294篇
  2011年   400篇
  2010年   383篇
  2009年   456篇
  2008年   410篇
  2007年   445篇
  2006年   408篇
  2005年   337篇
  2004年   293篇
  2003年   238篇
  2002年   227篇
  2001年   407篇
  2000年   343篇
  1999年   242篇
  1998年   127篇
  1997年   120篇
  1996年   81篇
  1995年   94篇
  1994年   86篇
  1993年   84篇
  1992年   147篇
  1991年   164篇
  1990年   162篇
  1989年   153篇
  1988年   139篇
  1987年   153篇
  1986年   122篇
  1985年   119篇
  1984年   114篇
  1983年   97篇
  1982年   67篇
  1981年   88篇
  1980年   51篇
  1979年   81篇
  1978年   46篇
  1975年   41篇
  1974年   52篇
  1973年   60篇
  1972年   41篇
  1971年   36篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
This paper reports results of a study based on a nationally representative sample of U.S. youth (N = 11,549) that asked two questions: (1) How does family structure affect the likelihood of adolescent death beyond that of race/ethnicity, sex, socioeconomic status, personal behavior, and other structural factors and (2) under what conditions might appeals for social justice be warranted for relative mortality statuses and for absolute gains in mortality? The study found that marital instability increases the likelihood of dying when controlling for a variety of other factors including class, race/ethnicity, sex, and unemployment rate in area of residence. The author argues that this finding lends support to social justice arguments to redistribute resources in such a way as to ensure the likelihood of absolute gains in mortality. The study also found, however, that race/ethnicity/sex also accounted for the likelihood of dying independently of family structure when controlling for socioeconomic and other factors. The author argues that this finding lends support to social justice arguments to redistribute resources on the basis of relative mortality statuses.  相似文献   
22.
《联合国国家及其财产管辖豁免公约》评介   总被引:5,自引:0,他引:5  
<联合国国家及其财产管辖豁免公约>是第一个全面规范国家及其财产管辖豁免问题的普遍性国际公约,也是第一个确认国家及其财产限制豁免的普遍性国际公约.该<公约>的通过和开放签署,对国际法的发展具有重要的理论和现实意义.  相似文献   
23.
24.
Fibres used in forensic casework suffer from a disadvantage common to other forms of trace evidence--it is not possible to state with absolute certainty that they originate from a specific source. Target fibre studies, population studies and research on 'blocks of colour' have effectively demonstrated the polymorphism of textile fibres (particularly man-made ones) and have shown that when a fibre is believed to have a specific putative source, the chance that it has originated from a different source purely by coincidence is extremely remote. A study by Houck MM (Houck MM, Inter-comparison of unrelated fibre evidence. Forensic Science International 2003; 135: 146-149) has shown that no coincidental matching fibres were recovered from items of clothing examined in 20 unrelated crimes. The study involved over two million comparisons. This work goes a step further, and using the example of blue polyester fibres shows that even within a very narrow segment of the whole general fibre population, many examples of a specific colour/type of man-made fibre taken from random sources can be compared and the chance of any two being the same is very low. These studies should help to show the specificity and value of transferred fibres in providing forensic evidence.  相似文献   
25.
技术标准与技术许可之关系探究   总被引:1,自引:0,他引:1  
技术标准与技术许可密切相关,不论技术标准是否含有专利技术方案,都潜伏着技术许可:技术许可是技术标准赖以存在和发展的前提,而技术标准又为技术许可创造了巨大的空间.专利联盟是专利权人通过标准进行许可来实现规模利润的主要形式,而其得以实现的保障是标准涉及的专利技术许可背后的专有技术之许可.  相似文献   
26.
注重文化建党既是党的历代领导集体一以贯之的重要思想 ,又是新的历史条件对我们党提出的新课题。以创新精神解决文化建党在新世纪面临的一系列重要问题 ,是加强党的执政能力建设的重要途径之一。  相似文献   
27.
A method has been developed on reverse phase high performance liquid chromatography for simultaneous determination of methyl, ethyl and isopropyl alcohols under refractive index detection using pure water as the mobile phase. A good separation has been achieved between these alcohols. Detector response was linear with a detection limit of 5 mg/100 ml. Recovery studies were performed by adding known amounts of methyl and ethyl alcohols to blood, lung and liver within the range 80–90%. The reproducibility of the results was always >90%. The quantitative distribution of methyl alcohol in postmortem body tissues and fluids has been reported in three cases of poisoning.  相似文献   
28.
China and India are the two most populous countries in the world and both have the fastest growing economies.The implications of this relationship and the significant geopolitical impact it has had on Asia and the wider world have attracted widespread attention.  相似文献   
29.
Drawing on the strategic surprise, warning-response, and foreign policy literature, this article argues that the September 11 terror attacks should be regarded as a strategic surprise and examines a number of key factors that contributed to vulnerability and inhibited vigilance. Three broad explanatory "cuts" derived from the literature—psychological, bureau-organizational, and agenda-political—are deployed to sift through the rapidly expanding empirical record in an effort to shed light on the processes and contextual factors that left the United States vulnerable to the attacks. The article aims to improve our understanding of generic processes and practices that enhance or detract from vulnerability and vigilance.  相似文献   
30.
Decomposition studies were conducted using two carcasses of domestic pigs, Sus scrofa L., 8.4 kg and 15.1 kg in weight, to determine the effects of carcass size on the rate of decomposition, composition of the arthropod fauna, and succession patterns. A total of 46 arthropod taxa were recovered during this study. No size-related differences were observed between carcasses with respect to composition of the arthropod fauna or patterns of succession. A greater number of arthropods were observed attracted to the 15.1-kg carcass, and the rate of decomposition observed was more rapid for the 15.1-kg carcass than for the 8.4-kg carcass. Internal temperatures of the 8.4-kg carcass were more directly related to external ambient temperatures during the fresh and bloated stages of decomposition. During the decay stage, both carcasses generated internal temperatures significantly above ambient temperatures. Following this stage, internal temperatures fell to approximate ambient temperatures during the postdecay and remains stages.  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