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   1387篇
  免费   84篇
各国政治   113篇
工人农民   72篇
世界政治   203篇
外交国际关系   96篇
法律   724篇
中国政治   6篇
政治理论   257篇
  2023年   22篇
  2022年   18篇
  2021年   35篇
  2020年   45篇
  2019年   61篇
  2018年   89篇
  2017年   75篇
  2016年   75篇
  2015年   46篇
  2014年   75篇
  2013年   233篇
  2012年   62篇
  2011年   52篇
  2010年   27篇
  2009年   27篇
  2008年   42篇
  2007年   42篇
  2006年   41篇
  2005年   43篇
  2004年   45篇
  2003年   43篇
  2002年   33篇
  2001年   34篇
  2000年   40篇
  1999年   14篇
  1998年   12篇
  1997年   4篇
  1996年   5篇
  1995年   6篇
  1994年   14篇
  1993年   8篇
  1992年   8篇
  1991年   8篇
  1990年   6篇
  1989年   6篇
  1988年   7篇
  1987年   6篇
  1985年   3篇
  1984年   3篇
  1982年   4篇
  1981年   2篇
  1980年   4篇
  1979年   6篇
  1978年   5篇
  1977年   2篇
  1973年   8篇
  1972年   3篇
  1971年   7篇
  1965年   4篇
  1963年   2篇
排序方式: 共有1471条查询结果,搜索用时 15 毫秒
11.
12.
Attila Tasnádi 《Public Choice》2008,134(3-4):293-305
The Hungarian mixed-member electoral system, adopted in 1989, is one of the world’s most complicated electoral systems, and, as this paper demonstrates, it suffers from the “population paradox.” In particular, the governing coalition may lose as many as 8 seats either by getting more votes or by the opposition obtaining fewer votes on each territorial list.  相似文献   
13.
How effective are autonomous audit agencies (AAAs) in curbing corruption and improving fiscal governance in emerging economies? AAAs are autonomous oversight agencies tasked with scrutinising government finances. However, they are not as effective as they could or should be, partly because of the political constraints they face and the political economy context in which they are embedded. This article assesses the performance and trajectory of the Argentine AAA. It suggests that AAAs can have only a limited impact when formal fiscal institutions are undermined by informal practices and undercut by adverse political incentives. It further highlights the limits of radical reform strategies based on the import of exogenous institutional models. This research has important research and policy implications for the reform and strengthening of AAAs in developing countries. Copyright © 2007 John Wiley & Sons, Ltd.  相似文献   
14.
Technology‐based economic development programs have become a salient feature of the state policy landscape since the 1980s. While much research exists on the topic, little attention has been given to the processes of policy formation. State programs have moved towards high technology areas emphasized at the federal level over the past decades, and nanotechnology became one of the latest targets. This paper examines the eight‐year process through which Pennsylvania adopted a “state‐wide strategy,” culminating in the Pennsylvania Initiative for Nanotechnology. In this process, programs that responded to the interests of multiple agents came first, and a state policy was formulated after the fact. This pattern of “rationalized policy formation,” as opposed to rational policy formation, may be more common than suspected. Its strengths and weaknesses in this Pennsylvania case are discussed.  相似文献   
15.
The aims of the authors in this paper has been to check the diagnostic ability of the Cathepsin A, B and D concentrations in the skin wound edges to the differential diagnosis between vital and postmortem wounds. We have studied 56 domestic pigs grouped in seven experimental series consisting of 8 animals in each, according to the time (0, 5, 15, 30 min and 1, 3 and 6 h) after the injury. The enzymatic activities were investigated following the methods by Bowen and Davison Biochem. J., 131 (1973) 417-419, Suhar and Marks J. Biochem., 101 (1979) 23-30 and by Anson (modified by Yamamoto, Eur. J. Biochem., 95 (1979) 459-467) for Cathepsin A, B and D, respectively. For the differential diagnosis between vital and postmortem wounds, our results showed that the most useful markers studied are the Cathepsin A and D activities, Cathepsin D that of the first one.  相似文献   
16.
An alternative simplified procedure for the genetic analysis of salivary protein complex (SPC) which eliminates the need for a specific concentrated parotid sample is proposed. After the technique is applied isoelectric focusing and protein detection is carried out by silver staining. The chance of exclusion of non-fathers for these systems in our population is 0.161711 for Pr, 0.07948 for Db, 0.07836 for Pa and 0.00995 for PIF. The total exclusion rate for these systems is 0.30042.  相似文献   
17.
18.
This article analyses the Portuguese presidential elections of January 2016, setting these within the backdrop of recent semi-presidential practice in Portugal. The election took place in the context of an apparent hollowing of the presidency, a pattern that potentially reflects the bailout that marked most of the second term of the outgoing president, Cavaco Silva. This pattern also helps explain the second-order nature of this presidential election. Despite potentially being an ‘open’ election – in that the incumbent had reached term limits – the election was characterised by low citizen mobilisation, low partisan involvement and low competitiveness. The initial two months of the newly elected president, Marcelo Rebelo de Sousa, suggests he is seeking to invert this hollowing pattern by mobilising popular support behind the presidency.  相似文献   
19.
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   
20.
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   
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