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   10254篇
  免费   304篇
各国政治   290篇
工人农民   487篇
世界政治   616篇
外交国际关系   312篇
法律   6582篇
中国共产党   34篇
中国政治   127篇
政治理论   1974篇
综合类   136篇
  2021年   62篇
  2020年   148篇
  2019年   131篇
  2018年   206篇
  2017年   244篇
  2016年   279篇
  2015年   227篇
  2014年   224篇
  2013年   843篇
  2012年   241篇
  2011年   283篇
  2010年   213篇
  2009年   282篇
  2008年   336篇
  2007年   349篇
  2006年   333篇
  2005年   302篇
  2004年   296篇
  2003年   243篇
  2002年   238篇
  2001年   353篇
  2000年   325篇
  1999年   259篇
  1998年   155篇
  1997年   114篇
  1996年   141篇
  1995年   115篇
  1994年   131篇
  1993年   127篇
  1992年   200篇
  1991年   249篇
  1990年   213篇
  1989年   198篇
  1988年   222篇
  1987年   203篇
  1986年   221篇
  1985年   193篇
  1984年   163篇
  1983年   158篇
  1982年   103篇
  1981年   123篇
  1980年   101篇
  1979年   103篇
  1978年   89篇
  1977年   77篇
  1976年   65篇
  1975年   65篇
  1974年   65篇
  1973年   77篇
  1971年   50篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
971.
The intradural sagittal diameter at the second cervical vertebra (SD/C2) of 62 SIDS cases was measured myelographically. This SD/C2 proved to be dependent on body size, body weight, and age. A clear, age-dependent difference is to be found in the primarily narrow spinal canal. This parameter (SD/C2), which is more precisely defined in adults on the basis of clinical, radiological, and autopsical findings is assumed to have the value of 0.5 cm in the first 2 months, 0.6 cm in the third month, and 0.65 cm in the fourth month. The resulting potential danger to infants is dependent upon their position. The SD/C2, was significantly decreased in extension as compared to a neutral posture. With consideration of the primarily narrow spinal canal in the infant, there is, according to our measurements, a potential hazard for the infant in any further, significant shortening of the SD/C2. This is independent of the width of the spinal canal under maximal extension. We found individual cases in which the SD/C2 was decreased by almost 50% from the normal value in neutral position. No correlation was found between the primary width of the spinal canal and the degree of luminal reduction upon extension.  相似文献   
972.
The chemical substances of perspiration found in latent fingerprint residue may hold the key for dating latent fingerprints. To study the chemical transformations of these components as a function of time and environment, fingerprint residues from four males and four females were analysed by thin-layer chromatography (TLC) and high performance liquid chromatography (HPLC). Three major and two or three minor components were detected by both methods and the variation in the quantity of the major components with time was observed.  相似文献   
973.
974.
975.
976.
977.
978.
Considerable research has documented that global perceptions of proceduralv fairness are associated with reductions in relative deprivation (RD). Less research has examined the specific process elements that lead individuals to perceive procedural fairness. In view of this, several researchers have suggested that providing advance notice concerning a negative decision increases perceived justice and thereby lowers levels of RD. Unfortunately, the evidence for this causal relationship is currently limited and is based upon a small number of correlation and role-playing studies. Thus, the present paper reports on two experimental studies that investigate the causal relationship between advance notice and RD. Findings in Study 1 showed that advance notice impacted the cognitive aspects of RD but not the affective or behavioral aspects. However, some methodological limitations were identified. These were corrected and a second experiment was conducted. This time advance notice lowered both the cognitive and affective aspects of RD but still did not impact the behavioral measure. Results are discussed in terms of Tyler's (1987) group value model.  相似文献   
979.
Fair Trade has become a dynamic and successful dimension of an emerging counter-tendency to the neo-liberal globalisation regime. This study explores some of the dilemmas facing the Fair Trade movement as it seeks to broaden and deepen its impact among the rural poor of Latin America's coffee sector. We argue that the efforts to broaden Fair Trade's economic impact among poor, small-scale producers are creating challenges for deepening the political impact of a movement that is based on social justice and environmental sustainability. The study is based on two years' research and seven case studies of Mexican and Central American small-scale farmer cooperatives producing coffee for the Fair Trade market.  相似文献   
980.
The “just war” philosophy of Cicero, St. Augustine, and St. Thomas Aquinas has had momentous and provocative implications for modern political theory. The use of force by police is one theme through which the just war tradition can be utilized to demonstrate the extent of infusion for the concept in the Western political archetype. As police become constrained in their use of force, they are bound by the concepts inherent in the philosophy of the just war doctrine. The Supreme Court, likewise, has been influenced by the philosophy of the just war tradition in many of its decisions regarding the proper use of force by police.  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