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   1499篇
  免费   511篇
各国政治   105篇
工人农民   5篇
世界政治   19篇
外交国际关系   70篇
法律   1229篇
中国共产党   2篇
中国政治   13篇
政治理论   522篇
综合类   45篇
  2022年   6篇
  2021年   44篇
  2020年   48篇
  2019年   167篇
  2018年   137篇
  2017年   117篇
  2016年   146篇
  2015年   130篇
  2014年   131篇
  2013年   304篇
  2012年   202篇
  2011年   142篇
  2010年   89篇
  2009年   45篇
  2008年   79篇
  2007年   65篇
  2006年   60篇
  2005年   21篇
  2004年   20篇
  2003年   34篇
  2002年   11篇
  2001年   7篇
  2000年   1篇
  1999年   3篇
  1983年   1篇
排序方式: 共有2010条查询结果,搜索用时 15 毫秒
971.
Seals are traditionally used in the Far East Asia to stamp an impression on a document in place of a signature. In this study, an accuser claimed that a personal contract regarding mining development rights acquired by a defendant was devolved to the accuser because the defendant stamped the devolvement contract in the presence of the accuser and a witness. The accuser further stated that the seal ink stamped on the devolvement contract was the same as that stamped on the development rights application document. To verify this, the seals used in two documents were analyzed using micro‐attenuated total reflectance Fourier transform infrared spectroscopy and infrared spectra. The findings revealed that the seals originated from different manufacturers. Thus, the accuser's claim on the existence of a devolvement contract was proved to be false.  相似文献   
972.
Neither absolute THC content nor morphology allows the unequivocal discrimination of fiber cultivars and drug strains of Cannabis sativa L. unequivocally. However, the CBD/THC ratio remains constant throughout the plant's life cycle, is independent of environmental factors, and considered to be controlled by a single locus (B) with two codominant alleles (BT and BD). The homozygous BT/BT genotype underlies the THC‐predominant phenotype, BD/BD is CBD predominant, and an intermediate phenotype is induced by the heterozygous state (BT/BD). Using PCR‐based markers in two segregating populations, we proved that the THCA synthase gene represents the postulated B locus and that specific sequence polymorphisms are absolutely linked either to the THC‐predominant or the THC‐intermediate chemotype. The absolute linkage provides an excellent reliability of the marker signal in forensic casework. For validation, the species‐specific marker system was applied to a large number of casework samples and fiber hemp cultivars.  相似文献   
973.
The potential for contextual information to bias assessments in the forensic sciences has been demonstrated, in several forensic disiplines. In this paper, biasability potential within forensic anthropology was examined by analyzing the effects of external manipulations on judgments and decision‐making in visual trauma assessment. Three separate websites were created containing fourteen identical images. Participants were randomly assigned to one website. Each website provided different contextual information, to assess variation of interpretation of the same images between contexts. The results indicated a higher scoring of trauma identification responses for the Mass grave context. Furthermore, a significant biasing effect was detected in the interpretation of four images. Less experienced participants were more likely to indicate presence of trauma. This research demonstrates bias impact in forensic anthropological trauma assessments and highlights the importance of recognizing and limiting cognitive vulnerabilities that forensic anthropologists might bring to the analysis.  相似文献   
974.
The death of a person as a reaction to the death of another is known as Philemon and Baucis death and may represent a difficult challenge for pathologists, especially due to the decompositional changes that often characterized these situations. In this article, we describe two cases of Philemon and Baucis deaths, the first concerning a married couple and the second concerning a father and son. Postmortem investigations including radiology and biochemistry were performed. Based on the results of all investigations, deaths were attributed to natural causes. Third‐party involvement could be excluded in both situations. In one case, biochemical analysis results revealed potentially contributing causes of death. The reported cases emphasize the importance of correlating findings from different postmortem investigations to identify causes of death, precipitating conditions and predisposing disorders, thus allowing the conclusion of natural death to be reached and third‐party involvement to be excluded.  相似文献   
975.
976.
Massively multiplayer online games (MMOGs) are now a major international phenomena. Millions of people can play together online, readily navigating boundaries between nations, languages and legal jurisdictions. The communities around some of these games are huge, of a size equivalent to a large city or small nation. This article explores three themes, labelled for conceptual purposes ‘games as legal spaces’, ‘games need lawyers’, and ‘lawyers need games’. It argues that games are inherently legal spaces, infused with legal-ness in a variety of ways; that more direct engagement from the legal community would be of tremendous value in making these systems, and the entertainment spaces which they regulate, ‘better’; and that we have a great deal to learn about law and about the regulation of the online space from games. The article concludes with the proposition that there is an opportunity for impactful knowledge exchange between legal scholars, MMOG developers and publishers, and the gaming community.  相似文献   
977.
978.
Evidence‐based policy and the contemporary politics of spin are said to characterise contemporary politics and policy. The paper asks firstly what sense is to be made of this coincidence, and then documents this coincidence. It then asks how credible is the conception of ‘evidence’ espoused by advocates of evidence‐based policy when it is conventionally represented as an ‘objective’ counter to ideology, spin or opinion? It points to major problems with the conventional understandings of ‘evidence’. It is suggested that while the evidence‐based policy literature relies on the associations ‘evidence’ is presumed to have with ‘sensory data’, this is neither the case nor all that defensible. The paper reprises arguments advanced by Henry Mayer and Hannah Arendt that the relationship of politics to the empirical was and is a far more complex relationship than is conventionally understood to be the case.  相似文献   
979.
In the recent past, several countries and states have begun to use Public‐Private‐Partnerships (PPPs) for infrastructure development and have attempted to create institutional environments that enable PPPs. Providing an enabling environment for PPPs entails a combination of institutional creation and changing existing institutions relating to project procurement. This paper attempts to understand how path‐dependant institutional change takes place in the context of PPPs and their enabling environments, and why different institutional environments evolve differently, using two cases: the implementation of PPPs in the road sector in the Netherlands and in the Indian state of Tamil Nadu. We identify two factors that can be used as predictors of the direction of institutional change: a long‐term orientation towards institutional change and a willingness to learn and modify transitional institutions. Where these factors exist, and thereby provide a goodness of fit, institutional change is likely to occur.  相似文献   
980.
Recently in the field of policy studies, there has been a renewed interest in research that connects policy design with broader governance outcomes. As opposed to past studies of policy design that have characterized policies along broad categories of variables, however, recent studies have sought to systematically assess the language of public policies and resultant outcomes. This paper contributes to the existing and emerging literature on policy design by coupling a content analysis of polices governing the aquaculture industry in two U.S. states and interviews with aquaculture community members to understand policy design and perceptions of policy legitimacy, coerciveness, and enforcement.  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