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   25446篇
  免费   557篇
各国政治   912篇
工人农民   1709篇
世界政治   1625篇
外交国际关系   871篇
法律   15057篇
中国共产党   2篇
中国政治   91篇
政治理论   5560篇
综合类   176篇
  2020年   233篇
  2019年   282篇
  2018年   1555篇
  2017年   1529篇
  2016年   1389篇
  2015年   388篇
  2014年   392篇
  2013年   1796篇
  2012年   617篇
  2011年   1323篇
  2010年   1302篇
  2009年   945篇
  2008年   1154篇
  2007年   1126篇
  2006年   484篇
  2005年   474篇
  2004年   578篇
  2003年   577篇
  2002年   426篇
  2001年   701篇
  2000年   628篇
  1999年   517篇
  1998年   309篇
  1997年   258篇
  1996年   226篇
  1995年   231篇
  1994年   274篇
  1993年   222篇
  1992年   337篇
  1991年   369篇
  1990年   329篇
  1989年   343篇
  1988年   318篇
  1987年   332篇
  1986年   336篇
  1985年   331篇
  1984年   297篇
  1983年   324篇
  1982年   260篇
  1981年   239篇
  1980年   178篇
  1979年   249篇
  1978年   171篇
  1977年   154篇
  1976年   131篇
  1975年   120篇
  1974年   135篇
  1973年   118篇
  1972年   112篇
  1971年   94篇
排序方式: 共有10000条查询结果,搜索用时 312 毫秒
151.
The conflict and animosity that sometimes accompanies child custody disputes can give rise to the propagation of allegations of child sexual abuse. To characterize the magnitude of the problem, the present study attempted to determine whether and to what extent child sexual abuse allegations predominate in family court litigation. The entire one-year caseload of a county family court docket was systematically reviewed and coded. Methodical evaluation of 603 family court files yielded base rates of pertinent allegations and other information profiling the cases. The findings did not support the contention that sexual abuse allegations are commonplace in child custody disputes. Sexual abuse allegations were made in 2% of cases in which custody or access was contested and in only 0.8% of the cases overal. Implications of the findings for future research were discussed.The authors gratefully acknowledge the assistance of the Honorable William R. Campbell and Barbara Scott, Clerk of Court for the South Carolina Fifth Judicial Circuit, as well as the contributions of Angie Newton, Frank Robinson, and Kimberly Ellis in the data collection process.  相似文献   
152.
153.
154.
155.
156.
Ethanol was determined by gas chromatography in a variety of tissues and body fluids secured at autopsy in 61 cases. The specimens tested included right and left heart blood, femoral blood, pericardial fluid, cerebrospinal fluid, vitreous humor, urine, stomach contents, and brain. Statistical analysis of the cases revealed no significant differences among the various blood sites tested. However, the variations in blood ethanol concentrations among the various sampling sites within each case were as follows: 40 cases showed differences of less than 25%; 16 cases revealed variability between 25% and 50%, 4 cases had differences exceeding 50%. In one case, satisfactory blood analyses could not be accomplished. The larger variances occurred especially in those instances in which stomach alcohol concentration was 0.50% or greater. In one case, the variability amongst the different blood sites exceeded 400% (femoral blood--0.043%, right atrium--0.070%, root of aorta--0.156%); the brain was 0.050%, and the stomach contents was 1.2%. For all 61 cases, variances in blood alcohol content among the different sampling sites in a single cadaver ranged from 1.8 to 428%.  相似文献   
157.
Using an interrupted time-series design, this research note analyzes the long-term effect of Minnesota's sentencing guidelines on reducing unwarranted disparity in sentencing outcomes that fall within their scope of authority. Unwarranted disparity is defined as residual variation not attributable to legally mandated sentencing factors. Findings suggest that although the sentencing guidelines initially reduced disparity for the no prison/prison sentencing decision, inequality began to revert to preguideline levels as time passed. Further analysis revealed that the guidelines had a permanent impact on reducing disparities in decisions on the length of prison sentence. Overall we observed an 18% decline in disparity for the no prison/prison outcome and a 60% reduction in inequality for the judicial decision as to length of prison sentence. Two explanations for the reversionary trend in the no prison/prison series are highlighted.  相似文献   
158.
159.
Technology developed in the National Aero-Space Plane (NASP) program is finding its way into a variety of applications ranging from aerospace to automotive to medical. The NASP Technology Applications Integrated Product Team (IPT) is pursuing technology transfer opportunities to promote the wide use of NASP-developed or-inspired materials in these and other industries. While product innovations and enhancements serve the commercial sector well, they also spin back to the government in the form of cheaper, higher-performing systems and components.  相似文献   
160.
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