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   1025篇
  免费   49篇
各国政治   124篇
工人农民   55篇
世界政治   151篇
外交国际关系   84篇
法律   463篇
中国政治   65篇
政治理论   128篇
综合类   4篇
  2024年   1篇
  2023年   11篇
  2022年   6篇
  2021年   20篇
  2020年   39篇
  2019年   54篇
  2018年   63篇
  2017年   70篇
  2016年   57篇
  2015年   41篇
  2014年   49篇
  2013年   130篇
  2012年   68篇
  2011年   87篇
  2010年   31篇
  2009年   23篇
  2008年   43篇
  2007年   33篇
  2006年   34篇
  2005年   37篇
  2004年   45篇
  2003年   36篇
  2002年   25篇
  2001年   10篇
  2000年   6篇
  1999年   2篇
  1998年   3篇
  1997年   11篇
  1996年   3篇
  1995年   3篇
  1994年   7篇
  1993年   5篇
  1992年   1篇
  1991年   4篇
  1990年   1篇
  1989年   1篇
  1988年   3篇
  1987年   2篇
  1986年   1篇
  1984年   1篇
  1983年   2篇
  1978年   1篇
  1967年   2篇
  1959年   1篇
  1943年   1篇
排序方式: 共有1074条查询结果,搜索用时 31 毫秒
101.
The true impact of heat-induced changes in human bone regarding their sex estimation has not been comprehensively documented having a potentially negative impact on forensic anthropology. The objective of this paper was to evaluate how heat exposure affects sex estimation based on both morphological and metric features. The study focused in both low-to-medium intensity burns and high intensity burns. Selected sexually dimorphic features were analysed in 51 experimentally burnt skeletons from the 21st Century Identified Skeletal Collection. Bones were burnt to maximum temperatures between 450 °C and 1050 °C achieved after 75 to 257 min. Morphological methods tested in this study comprised the recommendations for hipbone features from Buikstra and Ubelaker (1994) and from Bruzek (2002). On the other hand, metric references tested here were the ones from Wasterlain (2000), Curate et al. (2016) and Gonçalves et al. (2013) focused on the humerus, femur, calcaneus and talus. Agreement was tested with Gwet’s AC1 test and was further assessed by calculating the relative amount of perfect agreements. Results demonstrated that heat-induced changes affected not only the scoring of morphological features burnt at high temperatures but also the scoring of features burnt at lower intensities. On the other hand, metric features were only considerably affected in high intensity burns, no major changes being documented for low-to-medium intensity burns. For low-to-medium intensity burns, the Bruzek and Curate et al. methods revealed a better agreement between the pre- and post-burning scores. For high intensity burns, better agreement was obtained by using the Bruzek (2002) and Gonçalves et al. (2013) methods. As expected, heat-induced warping, fracture and metric change had a major impact on the pre- and post-observations’ agreement. Contrary to what has been systematically assumed over the years, this impact is also quite substantial in bones burnt at low-to-medium burn intensities so caution is advised during the analysis of this kind of burnt skeletal material.  相似文献   
102.
This study analyses the extent, sense, and strategies employed by sympathisers with Spanish state-wide left-wing parties to ‘reconstruct’ their affective ties with the Spanish nation after the ‘monopolisation of patriotism’ by Franco's regime. Such an undertaking is further complicated within the context of economic crisis and intensified peripheral nationalism found in Catalonia and the Basque Country. This article applies qualitative analysis to the discourse of left-wing participants from 11 focus groups held in March 2012 amidst the economic (and political) crisis. As expected, this context of crisis favoured the emergence of explicit discourse on the Spanish nation, providing an opportunity to gain a better understanding of its nature. Findings show that welfare nationalism and social patriotism define the kind of attachment developed by the interviewees towards Spain better than the concept of constitutional patriotism, or any kind of ethnic-cultural feeling of belonging.  相似文献   
103.
Relations between the European Union (EU) and regional subgroups in Latin America (Mercosur, the Andean Community and Central America) are clear examples of ‘pure interregionalism’ and provide evidence of the EU's active promotion of regional integration. Within the context of these cases, this article explores what type of international power the EU wields, how interregionalism is embedded in that power, and how it is deployed. Combining strands of literature on EU–Latin American relations, interregionalism, EU external policy and power provides a framework within which interregionalism can be understood as an important normative and practical tool for the EU's external power projection. Drawing on official documentation and interviews with key individuals, the paper highlights the EU's articulation of power in interregional relations and reflects upon its mixed success. It concludes that, while imperial qualities and aspirations can be observed in the EU's penchant for interregionalism, the transformative power of the EU remains limited.  相似文献   
104.
This study explains the intellectual history and ideology of the Turkic insurgency and the East Turkestan Republic in Kashgar in 1933–34. Texts in periodicals from the period suggest that the insurgency was defined by its intellectual elites more as a nationalist enterprise than as a religious one. The insurgency's ideologists established important national attributes of the East Turkestani nation, particularly its national name, homeland, symbology, and history, and they also articulated East Turkestani national interests, particularly political independence, representative government, and modernization. Regardless of the arguably low degree of social penetration of the ideas of the elites among common society and the small extent to which policy was actually implemented, the intertwining of East Turkestani national identity and interests with political self-government and modernization was an ideological concept that had a profound impact on all subsequent administrations in Xinjiang.  相似文献   
105.
The extraction of DNA from human skeletal remains applied to forensic, and evolutionary studies do not exclude risks, which are to be evaluated when working with unique specimens that could be damaged or even destroyed. In the present study were evaluated several nondestructive methods for recovering DNA instead of the most currently used pulverization method. Three different procedures to access inside the dental pieces (occlusal perforation, cervical perforation, and cervical cut) have been compared with the aim of recovering as many cell remains as possible to carry out a DNA extraction. Given the DNA quantitation results, a method was proposed that consists of a cervical cut to facilitate the access to the pulp cavity and a subsequent filing of the root canals down to the apex of the dental root. This methodology allows the recovery of both mitochondrial and nuclear DNA, with the minimum deterioration for the dental pieces.  相似文献   
106.
Research into maximizing the speed, precision, and reliability of estimating the postmortem interval (PMI) has been a recurring object of investigation and methodologies based on the vitreous humor (VH) have provided good results. However, contamination from causes not readily apparent, such as blood, can occur, and thus lead not only to an erroneous estimation of PMI, but also interfere with the correct identification of other substances in the VH. We have developed a flow cytometry method which quantifies blood contamination and is able to detect erythrocytes in 1:750,000 dilution of contaminated VH which affects the results of hypoxanthine. It is an improvement on the previous more complex mass spectrometry method, being faster, more sensitive, and readily available. As such, it could be proposed for the rapid screening of appropriate samples by detecting and eliminating blood contaminated samples from PMI estimation.  相似文献   
107.
108.
The Covenant of Mayors (CM) is the mainstream European movement involving local authorities who voluntarily commit to increase energy efficiency and the use of renewable energy sources within their territories with the aim of reducing CO2 emissions and meet the European Union objectives by 2020. One country that has a greater number of signatories of this agreement is Spain. This article analyzes which factors influence the decision of Spanish local authorities to join the ever‐growing movement. An empirical model is formulated to describe the behavior of Spanish local governments, this being a binary choice model which is a function of various political, economic, and technical factors. Among the prominent factors that influence this decision are population, availability of renewable energy, fiscal and environmental stress, citizens’ political preference, the contagion effect of neighboring municipalities, the existence of covenant coordinators, and finally, economic motivations.  相似文献   
109.
The article deals with new modes of representation of Croatian contemporary history. It argues that the Croatian grand narrative of the twentieth century is presented as the continuous fight of Croats for their nation-state. All historical events in the narrative are appraised as beneficial or harmful only in how they contributed to the creation of the state. The pattern of representation in heavily ethnocentric. The constructed self-image of the Croatian nation portrays Croats as humiliated and repressed by various others in the twentieth century. Croats are represented as the victims of other national groups and of history. The notion of historical responsibility is nonexistent for the analysed period.  相似文献   
110.
This paper examines the instrumental networks established between organized criminals and national politicians. Its major focus centers on the International Brotherhood of Teamsters, the Department of Labor, and the Reagan Administration. We explore the organized crime influence that affected President Reagan's selection of Raymond Donovan as Secretary of Labor. The choice of Donovan resulted in several related investigations into Donovan's association with organized criminals primarily in the construction industry in New Jersey and New York. We explain and critique the investigations thereby establishing the instrumental quality of the networks and the politics of law enforcement. This revised version was published online in July 2006 with corrections to the Cover Date.  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