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   13827篇
  免费   132篇
各国政治   430篇
工人农民   1255篇
世界政治   629篇
外交国际关系   497篇
法律   8166篇
中国政治   49篇
政治理论   2916篇
综合类   17篇
  2021年   40篇
  2020年   69篇
  2019年   105篇
  2018年   1382篇
  2017年   1311篇
  2016年   1124篇
  2015年   125篇
  2014年   132篇
  2013年   603篇
  2012年   325篇
  2011年   1044篇
  2010年   1112篇
  2009年   705篇
  2008年   887篇
  2007年   826篇
  2006年   141篇
  2005年   188篇
  2004年   325篇
  2003年   264篇
  2002年   126篇
  2001年   311篇
  2000年   281篇
  1999年   193篇
  1998年   88篇
  1997年   90篇
  1996年   71篇
  1995年   83篇
  1994年   70篇
  1993年   39篇
  1992年   121篇
  1991年   139篇
  1990年   131篇
  1989年   126篇
  1988年   113篇
  1987年   125篇
  1986年   100篇
  1985年   95篇
  1984年   105篇
  1983年   90篇
  1982年   62篇
  1981年   73篇
  1980年   34篇
  1979年   79篇
  1978年   50篇
  1977年   35篇
  1975年   37篇
  1974年   49篇
  1973年   54篇
  1972年   39篇
  1971年   34篇
排序方式: 共有10000条查询结果,搜索用时 46 毫秒
101.
102.
103.
This paper aims to review randomized experiments in criminology with offending outcomes and reasonably large numbers that were published between 1982 and 2004. A total of 83 experiments are summarized, compared with only 35 published between 1957 and 1981: 12 on policing, 13 on prevention, 14 on corrections, 22 on courts, and 22 on community interventions. Randomized experiments are still relatively uncommon, but there have been more large-scale multi-site experiments and replication programs. There have also been several experiments in which 100 or more places were randomly assigned. Relatively few experiments (only 10 out of 83) were conducted outside the United States. Meta-analyses suggest that prevention methods, correctional therapy, batterer programs, drug courts, juvenile restitution and deterrent policing were effective in reducing offending, while Scared Straight and boot camp programs caused a significant increase in offending.  相似文献   
104.
105.
Using merged administrative data from welfare reform evaluations in three states, we estimate the effects of child care subsidy use on the length of time it takes for a welfare applicant to move into substantial employment. Findings show that the use of a child care subsidy during an unemployed or marginally employed spell of welfare receipt is associated with between a 0.6 and 1.7 quarter (or 11% to 34%) reduction in the time to substantial employment in two of the three state samples. The positive influence of subsidy use on transitions to substantial employment is strongest for those welfare applicants with the lowest earnings who are mixing welfare and work prior to subsidy receipt.  相似文献   
106.
Assessment of competency for execution presents two compelling ethical questions for mental health professionals: whether clinicians can ethically provide such assessment, and if so, how it should be done in order to maximize quality and minimize ethical conflict. In this article we address the issue of whether to participate and, if so, how. The question of whether to participate is discussed by summarizing the arguments for and against participation and offering guidelines for making a decision. The question of how to proceed is discussed in two contexts: preadjudication (before a formal decision about competency) and postadjudication (following a determination of "incompetent" and transfer of the offender to another facility for treatment and further assessment). Finally, recommendations are made regarding research that would improve the quality of execution competency assessments.  相似文献   
107.
108.
109.
110.
A 1990 report prepared by the Office of Inspector General estimated that as much as $1 billion is lost to the Medicare program annually because (i) secondary payor situations are not detected and (ii) insurance companies often do not pay when they are required to be the primary payors. Office of Inspector General, No. A-09-98-00151, April 1990, Medicare and Medicaid Guide (CCH) [symbol: see text] 39,112, at 25,649. In order to better enforce the MSP provisions, suggestions have been made at the Congressional level to impose sanctions against providers who demonstrate a pattern of inappropriate billing practices such as double billing, repeated failures to screen beneficiaries for other insurance coverage, and the repeated submission to Medicare of bills that should be submitted to another payor. (See the Subcommittee Report on erroneous payments under the MSP program, supra.) Although authority for such sanctions has yet to be adopted, given the fiscal problems currently plaguing the federal government, providers can expect increased enforcement of the MSP provisions as a means of reducing Medicare costs, and should review their screening and billing practices accordingly.  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