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   1657篇
  免费   108篇
各国政治   149篇
工人农民   106篇
世界政治   201篇
外交国际关系   117篇
法律   887篇
中国政治   1篇
政治理论   301篇
综合类   3篇
  2023年   21篇
  2022年   18篇
  2021年   37篇
  2020年   61篇
  2019年   68篇
  2018年   97篇
  2017年   105篇
  2016年   101篇
  2015年   60篇
  2014年   90篇
  2013年   256篇
  2012年   72篇
  2011年   59篇
  2010年   34篇
  2009年   40篇
  2008年   52篇
  2007年   56篇
  2006年   53篇
  2005年   48篇
  2004年   55篇
  2003年   49篇
  2002年   33篇
  2001年   47篇
  2000年   41篇
  1999年   17篇
  1998年   14篇
  1997年   17篇
  1996年   6篇
  1995年   11篇
  1994年   12篇
  1993年   10篇
  1992年   12篇
  1991年   9篇
  1990年   7篇
  1989年   4篇
  1988年   8篇
  1987年   7篇
  1985年   4篇
  1984年   3篇
  1983年   4篇
  1982年   6篇
  1980年   4篇
  1979年   6篇
  1978年   5篇
  1973年   8篇
  1972年   3篇
  1971年   8篇
  1968年   3篇
  1966年   3篇
  1965年   5篇
排序方式: 共有1765条查询结果,搜索用时 15 毫秒
31.
Postmortem magnetic resonance imaging (MRI) is rarely used for the radiologic assessment of gunshot injuries, although it has clear advantages over postmortem computed tomography (CT) with regard to the imaging of soft tissue injuries. Another benefit in using MRI is that lodged projectiles composed of nonferromagnetic material such as lead present only marginal metal artifacts compared with severe artifacts on CT. This case report presents CT and MRI findings in a case with two gunshot wounds to the neck: a perforating wound and a nonperforating wound with a lead bullet lodged in the cervical spine. The decedent underwent CT and MRI before the scheduled autopsy. A ring of radiopaque material under the dermis in the fatty tissue was identified at both entrance wounds on CT, which was indicative of contact shots. The perforating gunshot was clearly indicated on CT by bullet fragments along the wound channel through the perforated 6th cervical vertebra and the fractured cricoid cartilage at the exit wound. The second trajectory, however, was only assumed based on the presence of gunshot residues at the entrance wound and the position of the lodged bullet. The radiologic assessment was severely impeded by the metal artifacts on CT. Barely noticeable metal artifacts on MRI allowed for clear visualization of the soft tissue injuries and the ruptured medulla oblongata. Only MRI clarified the soft tissue injuries of the brainstem noninvasively, which could provide specific and graphic information on the rapidity of death and the incapacitation of the victim.  相似文献   
32.
Minutiae are small distinguishing features found along every ridge flow, which make each friction ridge print unique. The most common friction ridge prints found at the crime scene are fingerprints; therefore, the most of the minutiae studies are focused exactly on this kind of prints. The authors believe that further examination and enlargement of the palm print database could result in better use of the palm prints for personal identification. We analyzed a total of 160 palm prints from 40 females and 40 males aged between 18 and 70 years from Slovakia. For the evaluation of the minutiae, the area of the hypothenar had to be marked out. The classification of the minutiae used for this study was based on a modified version of the classification system using the total of 13 types of minutiae. The frequency of every minutiae type was calculated and, using the chi-square test with Yates's correction, bilateral and sex differences were assessed. The relationship between the different types of minutiae was examined with Pearson's correlation test. During the initial phases of the identification process, the focus should be on the least common types of minutiae (Y or M and return), which were found not to correlate; thus, their mutual occurrence is random (e.g., overlap—Y or M, crossbar—return, or Y or M—dock). The results of the present study show which specific minutiae types are the most suitable for personal identification. These findings may be beneficial in more effective outcome of the identification process.  相似文献   
33.
This paper examines gender aspects of tactics of the alter-globalization movement. Focusing mainly on two transnational collective actions in Prague in 2000 and in Genoa in 2001, the research draws on participant observation, interviews with activists and analysis of the movement's alternative media. The feminist activism within the movement, the gendered tactics and their representation in the alternative media are analysed using the concept of diffusion. Although feminists are involved in the protests, and local Czech feminist activism was incited by the international mobilizations in Prague in 2000, they are often marginalized because of the emphasis on masculine confrontational and violent tactics used in demonstrations. The movement's alternative media further reproduce gender stereotypes. The visual representations of the tactics are traditionally gendered – women are depicted as fairies, men as fighters; this is because the movement does not want to appear weak and feminine, and seeks to be effective.  相似文献   
34.
This article asks why, in contrast to other historic territories with a regional language, such as Catalonia and the Basque Country, nationalist parties in the Autonomous Community of Galicia receive less electoral support. Going beyond prior explanations of this counterintuitive political outcome, which were mainly based on economic, sociological, and institutional factors, this piece of research sheds light on the strategies of political parties. It examines not only nationalist forces but statewide ones that successfully compete in Galicia. Our analysis is focused on the Bloque Nacionalista Galego (BNG) because this is the only nationalist force that has consistently achieved representation within the regional Parliament. Along with BNG's translation into party positions in both the left-right and center-periphery dimensions, the article's main contribution is its updating of the BNG's three framing strategies: the nationalism/“Spanishism” (1982–1993), the “common project” discourse (1993–2005), and the sovereigntist one (2005 onward). Shifts in public opinion regarding the territorial model and other attitudes toward self-government are also examined.  相似文献   
35.
ABSTRACT

Sla?álek and Svobodová’s paper focuses on the ideology of the Czech Islamophobic movement as seen during the 2015–16 migration crisis. In their analysis of interviews with demonstrators and speeches by leaders of the movement, they discuss first how the movement imagined its enemies, and then describe its vision of positive core values. They conclude that the movement’s key ideological features are: an emphasis on social and civilizational decline (declinism); a return to an assumed naturalness in economic and gender relationships (naturalization); and the open evocation of violence and severity (brutalization). In terms of Rogers Brubacker’s distinction between xenophobic ethno-nationalism in Eastern Europe, and the xenophobic defence of liberal values in the West, Sla?álek and Svobodová find that the Czech case fits the allegedly western pattern better than the eastern one, which may cast doubt on the whole essentialization of distinctions between ‘western’ and ‘eastern’ populisms.  相似文献   
36.
This paper asks whether strong bureaucracies can effectively constrain the continuously growing stock of rules in modern democracies through organizational coordination and learning. To answer this question, the paper analyzes the growth of rule stocks in the areas of environmental policy and social policy in 23 OECD countries over the period between 1976 and 2005. To do so, it develops a new measure of rule growth based on the content of laws and regulations rather than their length. The analysis highlights that effective bureaucracies are indeed better able to contain rule growth in these areas than weak bureaucracies. Since rules have to be implemented, countries suffering from bureaucratic capacity and quality constraints thus appear to be stuck in an implementation deficit trap. Appropriate implementation is not only inherently more challenging for countries with weak public administrations, but the body of rules to be implemented also tends to grow quicker in these countries.  相似文献   
37.
Local public administration contributes to a favorable business environment. Slovak Trade Licensing Administration (TLA) provides public services for traders. Centrally managed policy making without taking into account of local and regional specifics is not fully conforming to the current local needs of territorial units. Innovative administrative interventions from the central tier may reflect territorial needs of these units. Spatial distribution of performance data points out regional differences in the territorial units of the TLA. There are significant regional differences in the numbers of trades per employees and performed administrative actions. It creates conditions for individual approach in policy making. Cluster analysis groups the territorial units of the TLA for suitable tailor‐made policy making from the central tier. Based on the findings, there are seven clusters of territorial units with specific local and regional needs. Tailor‐made policy making can take into account of territorial specifics and strengthening the role of territorial units of the TLA in regional development.  相似文献   
38.
Regulatory reforms to public infrastructure services across European Union (EU) countries were aimed at increasing consumer welfare by introducing competition and choice into service markets. However, empirical evaluations have questioned whether these reforms have benefitted all consumers, suggesting that vulnerable groups of service users (especially those with lower levels of formal education), might be locked into poorly performing services. We assess the relationship between the level of competition in electricity and fixed telephony markets in EU countries and evaluate the affordability of these services for different socio‐educational layers. Our findings show that – although in countries where there is a relatively high frequency of switching, inequalities between socio‐educational groups are smaller and eventually disappear – competition as such does not play a part. These results suggest that demand‐side regulation that successfully enables consumer switching has the potential to equalize social welfare, thereby reflecting a possible convergence of regulatory instruments and the central aims of the welfare state in this context.  相似文献   
39.
40.
The global proliferation of precision-strike systems may be challenging the foundations of Western military-technological supremacy. Relatedly, the development of so-called Anti-Access and Area Denial (A2/AD) capabilities across the globe threatens to complicate Western freedom of military movement and access, and could give way to a more contested military-strategic environment. The twin challenges of precision-strike proliferation and A2/AD strongly impact NATO’s agenda, which revolves around strengthening deterrence and defence in Eastern Europe, and addressing the different threats emanating from the so-called Southern European neighbourhood. In order to address or mitigate such challenges, the Alliance needs to produce operational concepts and capabilities able to deliver deterrence and expeditionary warfare in a maturing precision-strike environment, one characterised by the emergence of A2/AD capabilities.  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