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   12188篇
  免费   285篇
各国政治   432篇
工人农民   527篇
世界政治   741篇
外交国际关系   324篇
法律   7856篇
中国政治   75篇
政治理论   2426篇
综合类   92篇
  2020年   113篇
  2019年   162篇
  2018年   279篇
  2017年   241篇
  2016年   309篇
  2015年   187篇
  2014年   201篇
  2013年   984篇
  2012年   348篇
  2011年   357篇
  2010年   227篇
  2009年   296篇
  2008年   285篇
  2007年   285篇
  2006年   283篇
  2005年   619篇
  2004年   334篇
  2003年   275篇
  2002年   252篇
  2001年   442篇
  2000年   375篇
  1999年   305篇
  1998年   163篇
  1997年   129篇
  1996年   140篇
  1995年   134篇
  1994年   138篇
  1993年   137篇
  1992年   255篇
  1991年   272篇
  1990年   269篇
  1989年   281篇
  1988年   250篇
  1987年   247篇
  1986年   287篇
  1985年   273篇
  1984年   237篇
  1983年   228篇
  1982年   153篇
  1981年   129篇
  1980年   116篇
  1979年   162篇
  1978年   95篇
  1977年   115篇
  1976年   96篇
  1975年   82篇
  1974年   112篇
  1973年   93篇
  1972年   92篇
  1971年   85篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
One December morning the naked bodies of two alcoholics were found on an open place in the center of the city of Essen. The phenomenon of paradoxical undressing due to vital hypothermia is described and the significant influence of alcohol on hypothermia and confusion in connection with hypothermia is pointed out. Compared to the results of other authors, external and internal signs of lethal hypothermia were analysed in a retrospective series of 30 cases (autopsy material in the region of Essen, investigation period from 1979-1989).  相似文献   
992.
Mild hypothermia, induced by experimental immersion of ten subjects in cold water, distorted the decay curve of breath ethanol of intoxicated subjects by as much as 22% while not altering overall ethanol clearance rate. The results provide in vivo verification of the in vitro temperature correction factor of 6.8% X degrees C-1, and support previous recommendations that temperature monitoring be included in procedures for breath-ethanol testing. We recommend that mouth temperature be obtained before breath sampling to screen for abnormal body temperature and to allow for potential use of a temperature correction factor. This modification to existing analytical procedures would help to optimize the reliability of breath-ethanol analysis in predicting blood-ethanol concentration.  相似文献   
993.
Theory based on sex role traditionalism predicts a more punishing decision for female than for male offenders, while theory based on chivalry (paternalism) predicts greater leniency by the courts for female offenders. This paper tests these two models using a large sample (36,680) of juvenile court referrals in metropolitan, urban, and rural locations spanning a nine-year period. Nonparametric analysis of covariance is used to control for differences in offense, previous contact with the court system, and other background variables. Evidence of gender bias in dispositions was found. The patterns of bias across time, location, offense committed, and previous referral to the court system supports the persistence of chivalry and a decline in sex role traditionalism in court decisions. Greater punishment for girls than boys was found only for repeat offenders committing more serious offenses. Even in those cases, girls were more likely to be taken out of the home environment by the courts through a custody transfer while boys were more likely to be sent to a lock-up facility.  相似文献   
994.
Do we know the lethal dose of cocaine?   总被引:1,自引:0,他引:1  
  相似文献   
995.
996.
Power Dynamics in an Experimental Game   总被引:1,自引:1,他引:0  
We introduce a new experimental method for studying power. Drawing from multiple theoretical perspectives, we conceptualize power as relational and structural, as well as comprised of different forms through which basic human needs can be met. Thus, the method we introduce examines how, when faced with a particular need, people use multiple forms of power concurrently and within a “field of influence,” namely, the other players in a game. This enabled us to examine how one form of power is transformed into another and how power is transferred from one player to another through interaction, as well as to measure power as behavior, as the exercise of choice, as potential, and as outcomes. Two experiments using egalitarian start conditions and a survivable ecology demonstrated that participants used power to gain more power, creating inequality. Being the target of force made some players unable to “survive” in the local ecology. Theoretical and methodological issues in the study of power are discussed and the application of our game method to the study of power in other fields is considered.  相似文献   
997.
Background. There have been a number of developments in the assessment of dynamic risk in the criminological literature. The dynamic risk assessment and management system (DRAMS) has been developed to facilitate the measurement of dynamic factors of risk for offenders with intellectual disability. Method. The study was designed to assess the construct validity, reliability and predictive utility of the DRAMS in 23 male forensic patients in a high secure setting. Predictions were made against independently collected incident data. Concurrent validity was assessed against the Ward Anger Rating Scale (WARS). Results. A reformulation of the individual section variables according to convergent and discriminant correlational analysis revealed Cronbach's alpha levels of >.8 for all sections apart from mood (alpha .750) and items retained to facilitate clinical information (alpha ?.017). Two hundred pairs of WARS and DRAMS assessments revealed orderly sectional correlations. The sections of mood, antisocial behaviour, and intolerance/agreeableness predicted incidents with a medium effect size as did total DRAMS score. There were highly significant differences between assessments taken 1 or 2 days prior to an incident and control assessments conducted at least 7 days from an incident. Conclusions. The reformulated DRAMS has good construct and concurrent validity. It appears to be a reliable assessment tool and informs on risk levels relating to stable and acute proximal factors. It appears as an important addition to the utility of risk assessments for this population.  相似文献   
998.
Martha Joynt Kumar is a professor of political science at Towson University. Her book, Managing the President’s Message: The White House Communications Operation (Johns Hopkins University Press, 2007), examines the media and communications operations of the administrations of Presidents Bill Clinton and George W. Bush. In March 2008, Professor Kumar was interviewed in the White House Press Briefing Room by Kevin R. Kosar on behalf of Public Administration Review. As this interview went to press, the American Political Science Association’s Presidency Research Group announced that it had awarded Managing the President’s Message the Richard E. Neustadt Award for best book on the U.S. presidency published in 2007.  相似文献   
999.
This article conceptualizes and analyses a type of complex social organization consisting of heterogeneous organizing modes and social relationships, combining, for instance, relationships making up markets and hierarchies as well as various types of informal networks. Each mode is constituted and regulated on the basis of a system of social rules making up a particular normative order and operates in terms of its own particular rationality or social logic. When modes are combined or integrated into multi-institutional complexes or organizations, the resultant structure entails zones of incongruence and tension at the junctures or interfaces of the different organizing modes and social relationships. The article identifies a number of such incongruent organizing modes that are common in complex social organizations or inter- institutional complexes. It goes on to identify several of the institutional strategies and arrangements including rituals, non-task-oriented discourses, and mediating roles that actors develop and institutionalize in dealing effectively with incongruences and potential conflicts in complex, heterogeneous organizations. The article suggests that problems of structural incongruence - and the tensions and conflicts that arise in connection with it as well as responses to these - are major features of complex organizational and inter-institutional arrangements. Moreover, it suggests that social order - the shaping of congruent, meaningful experiences - in these complex organizations as in most social life builds on non-rational foundations such as rituals and non-instrumental discourses. These contribute to maintaining social order and to providing a stable context, even for rational decision-making and action.  相似文献   
1000.
In 16 medical examiner's cases, which were found to be barbiturate-positive by thin-layer chromatographic screening of the liver, blood barbiturate concentrations were determined by gas chromatography. The corresponding vitreous humor samples were screened by the enzyme multiplied immunoassay technique, the EMIT-st serum barbiturate assay. By using the recommended dilution for detecting serum barbiturates, it was possible to detect barbiturates in vitreous humor at a toxic concentration. By using one fourth the amount of diluent, the barbiturates could be detected also at a therapeutic concentration. The EMIT-st assay proved to be useful in the screening for barbiturates in vitreous humor, a material that is readily available in forensic toxicology.  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