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   10820篇
  免费   284篇
各国政治   407篇
工人农民   381篇
世界政治   727篇
外交国际关系   290篇
法律   6828篇
中国政治   68篇
政治理论   2315篇
综合类   88篇
  2020年   103篇
  2019年   157篇
  2018年   192篇
  2017年   224篇
  2016年   218篇
  2015年   163篇
  2014年   186篇
  2013年   960篇
  2012年   224篇
  2011年   267篇
  2010年   216篇
  2009年   272篇
  2008年   277篇
  2007年   277篇
  2006年   275篇
  2005年   250篇
  2004年   239篇
  2003年   249篇
  2002年   239篇
  2001年   424篇
  2000年   369篇
  1999年   298篇
  1998年   159篇
  1997年   123篇
  1996年   145篇
  1995年   136篇
  1994年   135篇
  1993年   135篇
  1992年   236篇
  1991年   254篇
  1990年   245篇
  1989年   251篇
  1988年   231篇
  1987年   231篇
  1986年   270篇
  1985年   261篇
  1984年   235篇
  1983年   218篇
  1982年   157篇
  1981年   128篇
  1980年   117篇
  1979年   154篇
  1978年   88篇
  1977年   116篇
  1976年   97篇
  1975年   76篇
  1974年   92篇
  1973年   84篇
  1972年   79篇
  1971年   70篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
51.
On January 1, 1996, a new law took effect in Texas granting certain state citizens the privilege to carry a concealed handgun on their person for the first time since 1871. As a result of this dramatic shift in state law, Texas is now among the growing number of states across the nation who have adopted similar statutory provisions in one form or another. While at least one empiricals study of citizen’s attitudes toward concealed handgun ownership was conducted prior to the law’s effective date, no similar efforts were undertakens to assess the beliefs, perceptions and attitudes of the state’s law enforcement officers about this important social policy. The present study was therefore undertaken in response to the lack of serious attention which the issue of concealed handgun ownership among private citizens has received as it directly relates to the law enforcement profession. Subjects for this study (N=327) were drawn from four Texas law enforcement agencies representing various organizational sizes and missions. While the responses of officers who participated in the study indicate optimism about the law’s potential to deter various types of crime, they also reflect a certain degree of concerns about concealed handgun ownership among private citizens especially as this policy directly relates to perceive inadequacies in statemandated requirements and issues affecting officer safety.  相似文献   
52.
53.
54.
55.
56.
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   
57.
58.
59.
The concentration of thyreoglobulin (tg) was determined for death caused by hanging, strangulation by ligature, and throttling. Cases of sudden death (traumatic aortic rupture, penetrating wounds of the heart) were used for comparison. The mean values in cases of hanging (149.9±202.3 ng/ml), strangulation by ligature (193.1±173.3), manual strangulation (561.6±173.9) are distinguishable from violent acute deaths (23.3±27.6) and living healthy individuals (17.3±16.1). By means of statistical comparisons, significant differences were found between throttling and strangulation by ligature and between throttling and hanging (adjusted P<0.001). In connection with examination of the bodies high tg values can be regarded as a vital reaction in obstructive asphyxia.  相似文献   
60.
A number of recent studies have explored the consequences ofinterracial peer effects on the academic and social performanceof minority students. This article contributes to that discussion,focusing, however, on perceptions rather than behaviors. Theanalysis suggests that exposure to white peers is associatedwith declining perceptions of racial justice among black andLatino high school students. While cautioning against causalinterpretations of this finding, the article suggests that theintegrationist aims of Brown v. Board of Education will notbe satisfied without more thoughtful and vigorous desegregationefforts.  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