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   9007篇
  免费   282篇
各国政治   453篇
工人农民   413篇
世界政治   534篇
外交国际关系   268篇
法律   5717篇
中国共产党   3篇
中国政治   58篇
政治理论   1766篇
综合类   77篇
  2020年   109篇
  2019年   147篇
  2018年   209篇
  2017年   228篇
  2016年   227篇
  2015年   153篇
  2014年   155篇
  2013年   980篇
  2012年   237篇
  2011年   239篇
  2010年   203篇
  2009年   217篇
  2008年   272篇
  2007年   236篇
  2006年   268篇
  2005年   229篇
  2004年   233篇
  2003年   210篇
  2002年   221篇
  2001年   273篇
  2000年   270篇
  1999年   196篇
  1998年   122篇
  1997年   124篇
  1996年   115篇
  1995年   102篇
  1994年   101篇
  1993年   114篇
  1992年   185篇
  1991年   203篇
  1990年   182篇
  1989年   181篇
  1988年   164篇
  1987年   183篇
  1986年   176篇
  1985年   164篇
  1984年   159篇
  1983年   168篇
  1982年   97篇
  1981年   93篇
  1980年   77篇
  1979年   106篇
  1978年   78篇
  1977年   74篇
  1976年   60篇
  1975年   60篇
  1974年   66篇
  1973年   74篇
  1972年   63篇
  1968年   53篇
排序方式: 共有9289条查询结果,搜索用时 15 毫秒
851.
852.
There is mounting evidence that HIV infection among adolescents is increasing, particularly among minorities and inner-city youths involved in certain high-risk activities, such as multiple sex partners and intravenous drug use. Interviews conducted “on the street” with 611 seriously delinquent male and female adolescents (ages 12–17) included questions about their involvement in prostitution, intravenous drug use, and sex-for-crack exchanges. Findings included high percentages of youths engaged in these HIV-risk activities and a consistent association between all of them and greater illicit drug use. This would suggest that these risk behaviors may be surprisingly prevalent among some inner-city adolescent groups. Special AIDS prevention/intervention targeting these groups is warranted and urgently needed. Drug treatment should be a central focus of such programs.  相似文献   
853.
A simple and reliable previously reported extraction procedure has been extended to the analysis of a wide range of basic and neutral drugs in postmortem blood and other tissues. The method employs 200 microliters of blood treated with water and ammonia and extracted with diethyl ether. The concentrated extract is generally sufficiently clean for direct analysis by gas chromatography and high pressure liquid chromatography. Recovery, precision and linearity data are presented for selected drugs.  相似文献   
854.
The alleles present at the HLA DQ alpha locus may be typed by either allele specific oligonucleotide (ASO) probing or by restriction mapping, referred to here as amplification restriction fragment polymorphism (ARFP) analysis. ASO typing relies upon hybridization principles, whereas ARFP typing relies upon restriction site analysis. Dot-blot ASO typings which are of doubtful interpretation may be directly checked by ARFP analysis. Aliquots of the PCR products amplified using the commercial Amplitype HLA DQ alpha system are digested with suitable restriction endonucleases. Electrophoresis, blotting and detection of biotin-labelled restriction fragments provides a sensitive and robust typing method suited to forensic analysis.  相似文献   
855.
Family violence and Asian drinkers   总被引:1,自引:0,他引:1  
This is a study of 70 consecutive referrals to the Department of Psychological Medicine, National University Hospital, for treatment of drinking problems. There were 31 Chinese and 39 Indian drinkers, with 63 males and 7 females. Family violence with physical abuse occurred in 21 cases (30%). One of three wives of drinkers had been physically abused, but no children were victims. Drinkers with family violence were generally younger and more severely dependent on alcohol than the non-violent drinkers. There was no relationship between family violence and the ethnicity or marital status of the drinkers.  相似文献   
856.
For most of the 19th century, the labor movements of England and America seemed to be developing along similar lines. Then, in the decades around the turn of the century, both movements were embroiled in a common battle over the political soul of trade unionism. In England, the champions of broad, class-based social and industrial reforms prevailed. In the United States, they lost, and the winners were the voluntarists, who held that labor should steer clear of politics as much as possible. This article suggests that the key reasons for the divergence lie not in the sociology of the working class or labor movement, so much as in the character of the state and polity and the lessons trade unionists drew from experiences in those arenas. The difference between judicial supremacy in the United States and parliamentary supremacy in England combined with other differences in the two nations'forms of government to produce sharply contrasting lessons about the value of state-based reforms.  相似文献   
857.
858.
Firearms and adult, domestic homicides. The role of alcohol and the victim   总被引:1,自引:0,他引:1  
An epidemiological study was conducted to characterize adult, domestic homicides committed with firearms and to determine the role of alcohol intoxication in the likelihood of becoming a homicide victim. Data on 129 homicides in Ohio occurring between 1982 and 1985 were collected from police departments of major cities, the Ohio Department of Rehabilitation and Corrections, and county medical examiners. Forty-eight offenders were interviewed. Temporal and geographical patterns are discussed, as well as offender-victim relationships and the characteristics of the firearms used. High levels of blood alcohol in the victims suggest that alcohol is a risk factor for becoming a homicide victim, although data on alcohol consumption patterns in the population are necessary to advance this association.  相似文献   
859.
Chatwin  M.  Arku  G.  Cleave  E. 《Policy Sciences》2019,52(3):451-479
Policy Sciences - What is open government? The contemporary conceptualization of open government remains rooted in transparency and accountability, but it is embedded within the political economy...  相似文献   
860.
Central governments face compliance problems when they rely on local governments to implement policy. In authoritarian political systems, these challenges are pronounced because local governments do not face citizens at the polls. In a national‐scale, randomized field experiment in China, we test whether a public, non‐governmental rating of municipal governments' compliance with central mandates to disclose information about the management of pollution increased compliance. We find significant and positive treatment effects on compliance after only one year that persist with reinforcement into a second post‐treatment year. The public rating appears to decrease the costs of monitoring compliance for the central government without increasing public and media attention to pollution, highlighting when this mode of governance is likely to emerge. These results reveal important roles that nonstate actors can play in enhancing the accountability of local governments in authoritarian political systems.  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