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   20101篇
  免费   395篇
各国政治   1124篇
工人农民   1424篇
世界政治   1216篇
外交国际关系   900篇
法律   10834篇
中国共产党   3篇
中国政治   160篇
政治理论   4711篇
综合类   124篇
  2021年   66篇
  2020年   177篇
  2019年   196篇
  2018年   1496篇
  2017年   1482篇
  2016年   1305篇
  2015年   327篇
  2014年   302篇
  2013年   1681篇
  2012年   489篇
  2011年   1285篇
  2010年   1261篇
  2009年   905篇
  2008年   1095篇
  2007年   1005篇
  2006年   326篇
  2005年   359篇
  2004年   481篇
  2003年   457篇
  2002年   281篇
  2001年   423篇
  2000年   396篇
  1999年   359篇
  1998年   211篇
  1997年   168篇
  1996年   173篇
  1995年   179篇
  1994年   168篇
  1993年   147篇
  1992年   186篇
  1991年   202篇
  1990年   172篇
  1989年   176篇
  1988年   188篇
  1987年   190篇
  1986年   204篇
  1985年   161篇
  1984年   176篇
  1983年   186篇
  1982年   124篇
  1981年   82篇
  1980年   105篇
  1979年   120篇
  1978年   106篇
  1977年   90篇
  1976年   80篇
  1975年   64篇
  1974年   67篇
  1971年   58篇
  1969年   57篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
121.
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   
122.
The psychological assessment battery is an integral part of the selection process used to select patrol officer applicants. Unlike all other procedures used in the selection process, the psychological assessment has not been adequately validated. The purpose of this study was an attempt to provide validation data for a psychological assessment battery. The battery consisted of the Nelson-Denny, Shipley-Hartford, MMPI, and the Motivational Analysis Test (MAT). Performance measures included various measures of training academy performance and field training performance. A stepwise regression and MANOVA/Discriminant Analysis indicated that the psychological tests did predict performance, although an exact predictive equation could not be developed due to the high intercorrelations between predictor variables. This research was sponsored in part by a grant from the School of Applied Arts and Technology, Southwest Texas State University.  相似文献   
123.
124.
125.
126.
In the forensic science laboratory, the recovery of spermatozoa from vaginal swabs, or vaginal cells from penile swabs, can help determine if sexual intercourse may have taken place. There are several methods used to recover spermatozoa and cells from the swabs before visualisation on a microscope slide and most of these methods use water. Phosphate buffered saline (PBS) is a non-toxic solution used in many biological laboratories. Unlike water, PBS prevents cells rupturing or shrivelling up due to osmosis. This study demonstrates that PBS can be used for the extraction of spermatozoa and cells from swabs and that PBS does not affect subsequent DNA profiling.  相似文献   
127.
Can participatory programs in transitioning countries increase the involvement of citizens beyond the level expected from individual-level characteristics, such as demographic traits, socioeconomic resources, and civic orientations? To answer this question, I examine the causes of participation in the Ugandan constitution-making process. Statistical analysis of a random sample survey of 820 citizens demonstrates that although individual-level factors play a role, many Ugandans participated because mobilizing agents pulled them into the process. I argue that programs to encourage active and equal participation will be most successful if they supplement weak indigenous institutions of mobilization and help all types of citizens to participate early on in the transition to democracy.  相似文献   
128.
Sixteen major evaluations of programs to prevent school bullying, conducted in 11 different countries, are reviewed in detail. Of these 16 evaluations, 8 produced desirable results, 2 produced mixed results, 4 produced small or negligible effects, and 2 produced undesirable results. These varying findings may reflect variations in programs, in implementation, in assessment methods, or in evaluation designs. It is concluded that high-quality evaluations are needed in the future, with randomized designs, theoretically grounded interventions, multiple measures of bullying, and attempts to disentangle the effectiveness of different program components.  相似文献   
129.
The Hunter family of Rhode Island produced two important American diplomatists of the nineteenth century. The elder William Hunter served for nine years as the American envoy to Brazil, where he exerted positive influence over the young emperor, Dom Pedro II. The younger William Hunter entered the Department of State in 1829 and spent fifty-seven years there under twenty-one Secretaries of State. For decades the department's third-ranking officer, he became its “mentor and authority.” The overlapping careers of Hunter and his two successors helped guide American diplomacy until 1937.  相似文献   
130.
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