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   17491篇
  免费   462篇
各国政治   1010篇
工人农民   684篇
世界政治   1433篇
外交国际关系   758篇
法律   9813篇
中国共产党   2篇
中国政治   197篇
政治理论   3911篇
综合类   145篇
  2020年   227篇
  2019年   281篇
  2018年   388篇
  2017年   399篇
  2016年   419篇
  2015年   311篇
  2014年   377篇
  2013年   2153篇
  2012年   427篇
  2011年   537篇
  2010年   422篇
  2009年   447篇
  2008年   499篇
  2007年   477篇
  2006年   446篇
  2005年   393篇
  2004年   451篇
  2003年   448篇
  2002年   404篇
  2001年   695篇
  2000年   650篇
  1999年   534篇
  1998年   277篇
  1997年   247篇
  1996年   210篇
  1995年   193篇
  1994年   183篇
  1993年   183篇
  1992年   318篇
  1991年   334篇
  1990年   304篇
  1989年   304篇
  1988年   309篇
  1987年   305篇
  1986年   305篇
  1985年   275篇
  1984年   253篇
  1983年   278篇
  1982年   183篇
  1981年   168篇
  1980年   136篇
  1979年   184篇
  1978年   138篇
  1977年   113篇
  1976年   115篇
  1975年   105篇
  1974年   120篇
  1973年   109篇
  1972年   100篇
  1971年   99篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
101.
102.
A case of kidnapping involving the concept of paternity testing is described. The couple arrested and charged with kidnapping stated the child in their possession was their biological daughter. Serological tests were performed on liquid blood samples in an effort to determine if the couple could have been the biological parents of the child. Two genetic inconsistencies were discovered in the 15 blood marker systems analyzed.  相似文献   
103.
This paper describes the governance system of Spanish listed firms in the early 1990's. Although the institutional setting of the Spanish Stock Exchanges differs little from other European national markets, we found important differences in several aspects of corporate governance. In particular, some of the standard mechanisms of control (e.g. boards and institutional shareholders) do not play an active role, whereas ownership is relatively concentrated. Moreover, power indices suggest that controlling blocs of large shareholders are very likely to form. We thus conclude that the ownership of shares is a pivotal mechanism in the governance of Spanish corporations.  相似文献   
104.
An important problem in the political economy of the UK is that the disparity of unemployment rates across its regions is much more marked than the corresponding dispersion of wage rates. One possibility is that this is due to the attitude of trade unions to their members in different regions. If unions wish to preserve parity between members in different regions then they will value wage equality between regions over and above wage levels. This may then persuade them to overlook inter-regional productivity differences in setting wages. The price that low-efficiency regions will then pay for this desire for wage equality is higher unemployment rates.Much of the research for this paper was carried out while the author was visiting the Trade Union Economics Research Institute (FIEF), Stockholm in 1989. An earlier version of this paper was presented at a seminar there and the author is gratefully to Villy Bergstrom, Paul Chen, Douglas Hibbs, Eva Udden-Jondal and other institute members for several useful comments. Comments from Kevin Lee, John Spencer and an anonymous referee have also substantially improved the paper. The usual disclaimer applies.  相似文献   
105.
The social development model (SDM) is a theory of behavior that has proven useful in explaining the etiology of delinquency, violence, and substance use among adolescents as well as early antisocial behavior among pre-adolescents. A further test of the model is its generalizability across population groups. A section of the SDM representing prosocial influences in the etiology of problem behavior was compared for boys and girls and for children from low- and non low-income families using three waves of child, parent and teacher survey data on a sample of 851 elementary school students. Multiple group structural equation modeling was used to assess differences across groups in both measurement of model constructs and hypothesized structural paths between constructs. The results indicate overall similarity in the reliability of measurement models and validity of structural models.  相似文献   
106.
107.
A dissecting intramural haematoma of the coronary artery is an infrequent cause of sudden and unexpected death. Most cases are women and in a significant number of these women, the haematoma occurred at term to 80 days postpartum. Because the intimal rupture and communication with the lumen were not found in most of the cases, the site of rupture has been considered to be a vasa vasorum. The authors report on a case of one woman who was at a later postpartum period (106 days). The microscopic finding of the dissected coronary artery revealed two intimal tears in a section. The case showed that the dissecting intramural haematoma of the coronary artery is caused not only by the rupture of the vasa vasorum but also by the rupture of the intima.  相似文献   
108.
Distinctive blunt force injuries caused by a crescent wrench.   总被引:1,自引:0,他引:1  
  相似文献   
109.
This paper examines the impact of a "disability rights model" on the emerging disability rights movement in Germany. Traditional German disability politics and activism are based on the expansion of welfare and special needs provisions rather than on equal rights and integration. Inspired by the 1990 Americans with Disability Act, German activists adopted a disability rights model and successfully worked toward the passage of a constitutional equality amendment in 1994 and ant-discrimination legislation in 2002. Using the literature on rights mobilization, this paper argues that German disability activists use rights talk to both support and contest culturally specific approaches to disability rights, equal treatment, and the role of the state in guaranteeing welfare rights. The globalization of disability rights should not be viewed as an imposition of American norms but as a more complex process of adaptation and cultural transformation that involves constructing locally legitimate approaches to disability rights with an American import.  相似文献   
110.
1. The indications such as the place of finding, the identification of clothes or other personal items, represent only the first step towards the identification of a corpse. 2. An identification based on medical data, other than dental, is often possible, more often than it is believed. 3. The forensic pathologist plays a double role in the case of such an identification: a) in the phase of the inquiry, he must contact the investigators and the families to explain his wishes and the different possibilities of identification. b) he must use the gathered information in the appropriate way. 4. It would be desirable to compose some statistical tables of the various medical elements useful for the identification (mutilations, surgical operations, etc...). We present six cases of identification in our practice.  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