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   11155篇
  免费   145篇
各国政治   320篇
工人农民   553篇
世界政治   640篇
外交国际关系   407篇
法律   6929篇
中国共产党   34篇
中国政治   131篇
政治理论   2150篇
综合类   136篇
  2023年   57篇
  2021年   78篇
  2020年   171篇
  2019年   171篇
  2018年   246篇
  2017年   268篇
  2016年   318篇
  2015年   243篇
  2014年   252篇
  2013年   925篇
  2012年   266篇
  2011年   314篇
  2010年   237篇
  2009年   301篇
  2008年   363篇
  2007年   379篇
  2006年   350篇
  2005年   327篇
  2004年   313篇
  2003年   265篇
  2002年   251篇
  2001年   359篇
  2000年   332篇
  1999年   266篇
  1998年   163篇
  1997年   121篇
  1996年   146篇
  1995年   122篇
  1994年   141篇
  1993年   131篇
  1992年   203篇
  1991年   252篇
  1990年   219篇
  1989年   202篇
  1988年   226篇
  1987年   206篇
  1986年   224篇
  1985年   201篇
  1984年   167篇
  1983年   160篇
  1982年   107篇
  1981年   123篇
  1980年   104篇
  1979年   105篇
  1978年   93篇
  1977年   79篇
  1976年   66篇
  1975年   72篇
  1974年   66篇
  1973年   81篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
911.
Previous scholarship argues that House members' partisan relationship to the president is among the most important determinants of the share of federal dollars they bring home to their constituents. Do presidential politics also shape distributive outcomes in the Senate? Analyzing the allocation of more than $8.5 trillion of federal grants across the states from 1984 to 2008, we show that presidential copartisan senators are more successful than opposition party members in securing federal dollars for their home states. Moreover, presidents appear to target grants ex post to states that gain presidential copartisans in recent elections.  相似文献   
912.
Three experiments investigated mock jurors' ability to disregard inadmissible prior conviction evidence and hearsay. In Experiments 1 and 2, college students listened to an audiotape enacting a theft trial. The critical evidence favored the prosecution and was objected to by the defense. In three different conditions the judge either ruled the evidence admissible, ruled it inadmissible, or ruled it inadmissible and explained the legal basis for the ruling. In a fourth condition no critical evidence was presented. The critical witness' credibility was also manipulated. With prior conviction evidence but not hearsay the legal explanation “backfired.” In addition, the critical witness' credibility did not affect subjects' ability to disregard inadmissible evidence. The results of Experiment 3 suggest that the legal explanation may have affected the use of hearsay and prior conviction evidence differently because of subjects' dissimilar preconceptions of the fairness of using the two evidence items to assess guilt.  相似文献   
913.
Demographic and trend analysis of 881 consecutive suicides in blacks and whites is presented. For the years 1975 through 1984, the suicide rate was 15.1/100 000 and did not significantly change. White males were overrepresented in all age groups, had an overall suicide rate of 34.9, and showed a small but statistically significant increase in rate which was not accounted for by any specific age group. White females, in general, were represented in proportion to their prevalence in the population, and those ages 20 to 24 demonstrated an increasing suicide rate which was small. Black males were at highest risk in their twenties, showed no significant trends, and were also represented near their prevalence in the population. Black females of all ages were underrepresented, and had low suicide rates which decreased with time. No significant rate changes were noted for teenagers or the elderly. Firearms was the method of choice in all groups, although methods varied with age, race, and sex, and male children preferred hanging. Small but significant increases were noted for the prevalence of nondrug methods in females and carbon monoxide deaths in white males. Similarities and differences to larger scale studies are discussed. Suicide may have characteristics unique to given geographical areas and pervasive to all areas. The authors advocate study and publication of local data to clarify further the nature of suicide.  相似文献   
914.
A method is described for the gas chromatographic quantitation of carbon monoxide by means of thermal conductivity detection. Carbon monoxide is released from blood samples as small as 0.02 mL using a unique extraction chamber. The method was compared to a standard gas chromatographic and spectrophotometric method of carbon monoxide quantitation. It was comparable to the former with all samples evaluated and apparently more reliable than the latter with decomposed samples.  相似文献   
915.
In attempting to discredit an eyewitness, it is a common strategy for an attorney to highlight inconsistencies in the eyewitness's recall testimony during cross-examination and encourage the jurors to infer, based on those inconsistencies, that the eyewitness's memory is faulty. An experiment was conducted to examine the effectiveness of this cross-examination strategy. Subjects viewed a simulated cross-examination and rendered judgmenets about the eyewitness and defendant. The type of inconsistent testimony was manipulated between subjects. Subjects exposed to inconsistent recall testimony about either central or peripheral details perceived the eyewitness as less credible (as evidenced by ratings on multiple dimensions) and the defendant as less culpable. Inconsistency on central details led to fewer convictions. Results point to the effectiveness of this cross-examination strategh.  相似文献   
916.
Until new statutes and court decisions clarify the law applicable to outcomes research, providers will continue to face new questions. In the meantime, paying careful attention to satisfying the requirements of existing laws protecting peer review information will put providers in the best position to minimize their exposure. Providers should review their current outcomes measurement and management systems to ensure that (1) they are structured to take full advantage of the confidentiality protections available under state law, and (2) appropriate access to outcomes data for those who need it is clearly provided for in the relevant documentation.  相似文献   
917.
918.
Aim: We sought to ascertain the current nature of specialist community mental health provision for young people presenting with risk of harm to others or involvement with the youth justice system in England, Wales and Scotland. Methods: Questionnaire-based survey. Results: Fifty-five services were contacted, 48 responded and 35 of these were found to be providing some form of community mental health provision to high-risk young people. Thirteen services provided comprehensive community forensic child and adolescent mental health (FCAMH) services, whilst the remainder offered more ad hoc clinical input. Amongst the comprehensive FCAMH services, staffing, function, commissioning arrangements and population served varied widely. Conclusions: There is patchy geographical provision of comprehensive community FCAMH services across England, Scotland and Wales with heterogeneous commissioning arrangements, staffing and function. Development of a national commissioning strategy for community FCAMH services is required to ensure that the complex needs of high-risk young people are adequately addressed.  相似文献   
919.
920.
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