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   1869篇
  免费   17篇
各国政治   53篇
工人农民   200篇
世界政治   41篇
外交国际关系   43篇
法律   1355篇
中国政治   11篇
政治理论   176篇
综合类   7篇
  2021年   7篇
  2020年   20篇
  2019年   12篇
  2018年   96篇
  2017年   33篇
  2016年   103篇
  2015年   35篇
  2014年   20篇
  2013年   72篇
  2012年   141篇
  2011年   94篇
  2010年   17篇
  2009年   44篇
  2008年   28篇
  2007年   26篇
  2006年   31篇
  2005年   405篇
  2004年   118篇
  2003年   44篇
  2002年   28篇
  2001年   22篇
  1999年   14篇
  1997年   6篇
  1994年   4篇
  1993年   4篇
  1992年   22篇
  1991年   25篇
  1990年   32篇
  1989年   40篇
  1988年   29篇
  1987年   28篇
  1986年   31篇
  1985年   20篇
  1984年   18篇
  1983年   14篇
  1982年   8篇
  1979年   10篇
  1978年   10篇
  1977年   7篇
  1975年   15篇
  1974年   25篇
  1973年   14篇
  1972年   16篇
  1971年   19篇
  1970年   13篇
  1969年   7篇
  1968年   11篇
  1967年   9篇
  1966年   5篇
  1965年   5篇
排序方式: 共有1886条查询结果,搜索用时 0 毫秒
51.
DNA is one of the fastest growing tools in forensic sciences, increasing reliability in forensic reports and judgments. The use of DNA has increased in different areas of the forensic sciences, such as investigation of plant species, where plastid DNA has been used to elucidate and generate evidence in cases of traceability of genetically modified and controlled plants. Even with several advances and the practice of using DNA in forensic investigations, there are just few studies related to the identification of genetic tools for the characterization of drug and nondrug-types of Cannabis. Herein, the whole plastomes of two drug-type Cannabis are presented and have their structures compared with other Cannabis plastomes deposited in the GenBank, focusing in the forensic use of plastome sequences. The plastomes of Cannabis sativa “Brazuka” and of the hybrid Cannabis AK Royal Automatic presented general structure that does not differs from the reported for other C. sativa cultivars. A phylogenomic analyses grouped C. sativa “Brazuka” with the nondrug C. sativa cultivars, while the hybrid Cannabis AK Royal Automatic placed isolated, basal to this group. This suggests that the analysis of plastomes is useful toward genetic identification of hybrids in relation to C. sativa.  相似文献   
52.
After the coup of 11 September 1973 in Chile, the international solidarity movement, including Chilean exiles, that flourished on a global level not only tried to help the victims of the military junta with their material needs, but also carried out advocacy work in order to denounce the crimes committed by the regime and to collect documents and information that could be used as evidence in future court cases. At the same time, the junta also drew on a network of foreign supporters, including European ones. In order to analyze theses networks’ campaigns to denounce (or cover) the crimes perpetuated and their ongoing judicial and memory struggles in Latin America and Europe, from the 1970s until today, this article provides a study of mobilizations between Chile and West Germany, namely of the Forschungs- und Dokumentationszentrum Chile-Lateinamerika in West Berlin, the West German section of Amnesty International and the supporters of the German sect in Chile “Colonia Dignidad”.  相似文献   
53.
The American University of Beirut's emergence as a hub of Arab national and cultural identity in the first half of the twentieth century has been well documented by historians. The simultaneous Zionist presence on campus has been largely overlooked. Zionist ideas were predominantly promoted by Palestinian Jewish students who formed a small but vocal minority at AUB prior to 1948. Faculty and non-Jewish students also regularly collaborated with and traveled to Zionist institutions in Palestine for academic, athletic, and leisure purposes. For Arab students on campus, therefore, Zionism was not an abstract concept, but rather a national identity embodied by fellow classmates and friends on campus. As the conflict in Palestine increased in the 1930s and 1940s, so too did political activism and tensions on campus between Zionist and Arab nationalist students. This article analyzes this unique period of exchange, collaboration, and friction at AUB, which came to a swift end with the outbreak of the 1948 War. By focusing on the interactions between Arab and Zionist Jewish students at AUB, I seek to extend the ‘relational’ approach towards Jewish-Arab contact beyond Palestine's borders.  相似文献   
54.
As a best-selling writer of popular romances during the first half of the twentieth century, Berta Ruck (1878-1978) has been characterised as a producer of 'omelettes of frivolity and sweetness' whose appeal was confined to adolescent girls and the servant classes. Closer attention to some of the early novels and to her own evaluation of her work, however, reveals her attempts to confront and articulate the impact of societal change upon a generation whose world was being irrevocably altered by the Great War and its aftermath. Her almost forensic attention to local detail and her treatment of contemporary questions of gender identity make her a compelling chronicler of the period and lend credibility to her claims of a broader readership than that generally associated with the genre.  相似文献   
55.
56.
57.
We know relatively little about the economic effects of “insignificant” rules because they are not typically analyzed. Yet, these rules could be cumulatively important. We provide an economic analysis of one proposed rule to control hazardous air pollutants, which is not considered to be economically significant. This rule is of particular interest because it is one of the first in a long series of rules that Environmental Protection Agency (EPA) will consider for limiting hazardous air pollutant emissions. Our analysis suggests that the proposed controls that EPA has considered are not likely to pass a benefit–cost test. We recommend that an agency base its decision to allocate additional resources to benefit–cost analysis on the expected value of the improved information. In addition, agencies should consider applying a rule of thumb that would specify a threshold level of risk reduction that needs to be achieved before some kinds of regulation are considered.  相似文献   
58.
59.
The U.S. Supreme Court held in Wilson v. Arkansas (1994) that the common law “knock-and-announce” principle formed part of the “reasonableness” inquiry under the Fourth Amendment. However, the Court’s opinion gave little guidance as to what would be unreasonable under these circumstances. Some critics expressed concern that this lack of guidance would lead to many variations among lower courts. Other observers discerned a signal that little should be deemed “unreasonable” in the context of “knock and announce.” These criticisms are analyzed through a review of lower court interpretations of Wilson.  相似文献   
60.
Employees rate the fairness of organizational policies by applying principles of distributive and procedural justice. Using Leventhal’s (1980) Principles of Procedural Justice, the current study surveyed 279 upper-level college and graduate students to determine the impact each principle has on support for drugtesting policies. The results support the hypothesis that drug-testing programs that violate these principles are viewed as unfair.  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