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   193448篇
  免费   8373篇
  国内免费   155篇
  2020年   2807篇
  2019年   3470篇
  2018年   3844篇
  2017年   4218篇
  2016年   4857篇
  2015年   3951篇
  2014年   4815篇
  2013年   23511篇
  2012年   5354篇
  2011年   4693篇
  2010年   4239篇
  2009年   4945篇
  2008年   4718篇
  2007年   4273篇
  2006年   4666篇
  2005年   4530篇
  2004年   4078篇
  2003年   3654篇
  2002年   3486篇
  2001年   4399篇
  2000年   4151篇
  1999年   3797篇
  1998年   2932篇
  1997年   2726篇
  1996年   2637篇
  1995年   2472篇
  1994年   2446篇
  1993年   2383篇
  1992年   3131篇
  1991年   2912篇
  1990年   2800篇
  1989年   2679篇
  1988年   2634篇
  1987年   2591篇
  1986年   2626篇
  1985年   2859篇
  1984年   2790篇
  1983年   2516篇
  1982年   2465篇
  1981年   2412篇
  1980年   2248篇
  1979年   2543篇
  1978年   2368篇
  1977年   2285篇
  1976年   2093篇
  1975年   2267篇
  1974年   2402篇
  1973年   2287篇
  1972年   1848篇
  1971年   1774篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
161.
162.
163.
164.
165.
166.
167.
Gay marriages (as such) are not as yet allowed anywhere but the demand for them is increasing. Most countries take a liberal attitude towards marriage: few obstacles are put in its way. But objections to gay marriages continue to be raised. These objections are refuted and the case for gay marriage is assessed through the prism of various forms of liberalism. The normative argument for allowing gay marriage is shown to be both strong and consistent with many of the values upheld by the opponents of such unions.  相似文献   
168.
In this essay I address three ways in which Edwards can inform Christian understanding of public life. First I show how Edwards provides both philosophical and theological rationales for social engagement and thereby resists the separation of religion from public life, and use his consideration of poverty as an illustration. Part II examines Edwards's dialectical treatment of patriotism, demonstrating both its importance to the Christian life and its susceptibility to deceptive accommodation to culture. Finally, in Part III I discuss Edwards's use of "national covenant," which despite its temptation to chauvinism Edwards used to undermine national pride. In the conclusion I assess what we can use from Edwards for contemporary Christian understandings of public life.  相似文献   
169.
170.
In three experiments we studied the relationship between contextual conditioning and the reinstatement of extinguished lever pressing that occurs when noncontingent food is introduced following extinction. In all three experiments the non-contingent food was presented off-baseline (with the response levers not present). On subsequent tests, with the response levers present, animals that had been exposed to food showed more reinstatement of lever pressing than control animals. This finding rules out alternative mechanisms for the reinstated responding that rely on the interaction of non-contingent food and responding, such as superstitious reinforcement or the discriminative after-effects of food. In addition, in each experiment we demonstrated that manipulations known to affect contextual conditioning (signalling the food in Experiment 1, context extinction in Experiment 2, and switching contexts in Experiment 3) reduced the reinstatement. These results are consistent with the claim that contextual conditioning is important in controlling instrumental conditioning and closely parallel findings concerning the reinstatement of Pavlovian responsing following extinction.  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