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   694篇
  免费   30篇
各国政治   29篇
工人农民   73篇
世界政治   73篇
外交国际关系   53篇
法律   320篇
中国共产党   1篇
中国政治   9篇
政治理论   163篇
综合类   3篇
  2023年   12篇
  2022年   13篇
  2021年   8篇
  2020年   37篇
  2019年   42篇
  2018年   42篇
  2017年   41篇
  2016年   37篇
  2015年   21篇
  2014年   27篇
  2013年   102篇
  2012年   29篇
  2011年   35篇
  2010年   25篇
  2009年   19篇
  2008年   25篇
  2007年   34篇
  2006年   30篇
  2005年   23篇
  2004年   29篇
  2003年   22篇
  2002年   18篇
  2001年   11篇
  2000年   5篇
  1999年   4篇
  1998年   3篇
  1997年   4篇
  1996年   4篇
  1995年   3篇
  1994年   2篇
  1993年   2篇
  1992年   2篇
  1991年   2篇
  1990年   1篇
  1988年   1篇
  1987年   2篇
  1986年   1篇
  1982年   1篇
  1981年   1篇
  1979年   1篇
  1978年   1篇
  1971年   1篇
  1963年   1篇
排序方式: 共有724条查询结果,搜索用时 15 毫秒
661.
The last dozen years have seen a massive transnational mobilization of the legal, political, and research communities in response to the worrisome hypothesis that vaccines could have a link to childhood autism and other developmental conditions. Vaccine critics, some already organized and some composed of newly galvanized parents, developed an alternate world of internally legitimating studies, blogs, conferences, publications, and spokespeople to affirm a connection. When the consensus turned against the autism hypothesis, these structures and a committed membership base unified all the organizations in resistance. This article examines the relationship between mobilization based on science and the trajectory of legitimacy vaccine criticism has taken. I argue that vaccine critics have run up against the limits of legitimate scientific argument and are now in the curious position of both doubling down on credibility-depleting stances and innovating new and possibly resonant formulations.  相似文献   
662.
Abstract: Very little literature exists concerning radiochemical and microscopic analyses of gunshot wounds in decomposed material, and even less concerning skeletonized samples; the most advanced technologies may provide useful indications for the diagnosis of suspect lesions, especially if gunshot wounds are no longer recognizable. However, we know very little of the survival of gunshot residues (GSR) in skeletonized samples. This study examined nine gunshot wounds produced on pig heads which then underwent skeletonization for 4 years, and four gunshot entries on human heads from judicial cases which were then macerated to the bone in water; the samples underwent scanning electron microscopy coupled with energy dispersive X‐ray (SEM‐EDX) analysis. Positive results for GSR were observed only in four of the nine animal samples and in all four human samples. Among the human samples, two lesions showed Pb and Sb, one lesion only Pb, and one Pb, Sb, and Ba. This pilot study showed the survival of GSR in skeletal material and therefore the crucial importance of SEM‐EDX analyses on skeletonized material. Further studies are needed in order to ascertain the role of environmental modifications of GSR.  相似文献   
663.
A case of fatal hypernatraemia after laparoscopic treatment of hydatid livers cysts is presented in order to highlight the risks associated with the implementation of newer techniques and the use of hypertonic saline as a scolecocidal agent in hydatid disease. Additionally this case raises some concerns on the importance of obtaining a patient's informed consent.  相似文献   
664.
This paper proposes a new approach for automatic classification of counterfeit Viagra(?) and Cialis(?) tablets using image processing and statistical analysis. A high resolution VSC 5000 is used for image acquisition in a controlled environment, and the combination of a thresholding technique with morphological operators is used to segment the tablet from the background. A statistical model based on the RGB color components of original samples is built, and the detection of counterfeit tablets was performed by checking the adherence of a test sample to the obtained distribution using the Bhattacharyya distance. Our experimental results indicated that counterfeit tablets can be effective detected using the proposed approach.  相似文献   
665.
In medical practice in Germany and several other countries abbreviated orders linked to end-of-life decisions, such as DNR (do not resuscitate), are increasingly used. In order to investigate their legal status, this article gives an overview of the recently passed German law, which regulates the process of end-of-life decision-making and the use of living wills, giving primacy to patient autonomy. Concerning the risk of misinterpretation of acronyms, the article describes the impacts of such orders on patient autonomy and safety and suggests a clear systematic classification of the different DNR orders in order to investigate their legal status under the German law. Their general binding force is to be acknowledged, depending on its origination and the fulfilment of certain requirements.  相似文献   
666.
667.
668.
ABSTRACT

The returned Australia-Japan Foundation Visiting Professor of Australian Studies at the University of Tokyo (2014–15), Anna Johnston, reflects on a 2014 exhibition held in Tokyo: The Bunkamura Museum of Art’s “Captain Cook’s Voyage and Banks’ Florilegium.” The Florilegium continues to have resonance as part of Australia’s complex colonial inheritance from the Enlightenment past. Its display and interpretation both overseas and within Australia provides an opportunity to better understand its origin in a pivotal historical period, globally, and its contribution to knowledge in arts and sciences. The Florilegium also reveals how Indigenous knowledge was central to European exploration and knowledge production. This article outlines contextual issues and seeks to provide a complex biography of this scientific and artistic artefact of Empire, in order to propose new ways of reading the Florilegium that pay attention to that enriched biography.  相似文献   
669.
Thirty-nine adolescent girls, 16–19 years, were observed together with their 2 parents at a family discourse about moral and family issues on which they disagreed, to study interaction and conflict handling in families with daughters at different levels of ego development. Family interactions were coded by the Constraining and Enabling Coding System, ego development by the Washington University Sentence Completion Test and handling of internal conflict by Bond Defense Style Questionaire. Daughters' ego development was predicted by parental cognitive and affective enabling, but not by constraining communications. Fathers' cognitive and affective enabling transactions and mothers' affective enabling transactions contributed to the explained variance in the adolescents' ego development when daughters' age, parents' SES and ego development were controlled for in hierarchical regression analyses. Parents' ego levels were related to their enabling transactions, which also predicted daughters' ego levels, suggesting that especially enabling parenting behavior may play a mediating role. Mothers' challenging behavior toward daughters and parental autonomy from responding in kind to daughters' communications were also related to high ego levels in daughters.  相似文献   
670.
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