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   69026篇
  免费   2966篇
  国内免费   35篇
  72027篇
  2020年   854篇
  2019年   973篇
  2018年   1409篇
  2017年   1430篇
  2016年   1489篇
  2015年   1081篇
  2014年   1284篇
  2013年   5900篇
  2012年   2367篇
  2011年   2446篇
  2010年   1469篇
  2009年   1458篇
  2008年   2046篇
  2007年   1992篇
  2006年   1818篇
  2005年   1513篇
  2004年   1564篇
  2003年   1488篇
  2002年   1424篇
  2001年   2385篇
  2000年   2225篇
  1999年   1659篇
  1998年   764篇
  1997年   666篇
  1996年   718篇
  1995年   655篇
  1994年   641篇
  1993年   633篇
  1992年   1361篇
  1991年   1248篇
  1990年   1248篇
  1989年   1200篇
  1988年   1161篇
  1987年   1077篇
  1986年   1090篇
  1985年   1133篇
  1984年   920篇
  1983年   796篇
  1979年   913篇
  1978年   693篇
  1975年   761篇
  1974年   883篇
  1973年   868篇
  1972年   764篇
  1971年   694篇
  1970年   604篇
  1969年   645篇
  1968年   776篇
  1967年   665篇
  1966年   655篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
32.
Do the conditions under which promises are made determine whether they ought to be kept? Philosophers have placed a number of conditions on promising which, they hold, must be met in order to make promise-keeping obligatory. In so doing, they have distinguished valid promises from invalid promises and justified promises from promises that are not justified. Considering such conditions, one by one, we argue that they are mistaken. In the first place, the conditions they lay down are not necessary for either valid or justified promise-making. In the second place, promises need not meet such conditions in order to create moral obligations. In general, such analyses of promising fail because they suffer from a confusion between promise-making and promise-keeping. Philosophers have wrongly supposed that obligations to keep promises are dependent upon, or derivable from, the quality of the promises themselves, at the time they are made, instead of focusing on conditions that must be satisfied at the time when promises are supposed to be kept. It is not the quality of a promise that determines an obligation to keep it but the rightness or wrongness of performing the promised act.  相似文献   
33.
34.
35.
36.
37.
38.
This essay will focus on the Buddhist metaphysics of experience which is generally glossed over due to the excessive concern for the ultimate goal in Buddhism, nirvīna , and in consequence of which the emphasis has been on the practice of; meditative discipline in aspiration for that goal. Yet neither nirvana nor meditative discipline can be understood properly without examining the full dimension of our ordinary experience. Such an examination should reveal to us the unique ways in which the Buddhist refers to the bounded and unbounded conditions of existence. All this is novel insofar as metaphysics goes and indeed it would have to be a unique form of metaphysics in order to accommodate the dual aspect of existence. The key to this metaphysics lodges in the Buddhist concept of experiential process,1 technically known as pratītyasamutpāda which is variously translated as relational origination, interrelational origination or dependent origination. It refers to the Buddhist concept of causality but, as we shall see, it is a unique concept with more than the usual Western connotation.  相似文献   
39.
Logical connectives, such as “AND”, “OR”, “IF . . . THEN”, and “IF AND ONLY IF” are ubiquitous in both language and cognition; however, reasoning with logical connectives is error-prone. We argue that some of these errors may stem from people's tendency to minimize the number of possibilities compatible with logical connectives and to construct a “minimalist” one-possibility representation. As a result, connectives denoting a single possibility (e.g., conjunctions) are likely to be represented correctly, whereas connectives denoting multiple possibilities (e.g., disjunctions or conditionals) are likely to be erroneously represented as conjunctions. These predictions were tested and confirmed in three experiments using different paradigms. In Experiment 1, participants were presented with a multiple-choice task and asked to select all and only those possibilities that would indicate that compound verbal propositions were true versus false. In Experiment 2, a somewhat similar task was used, except that participants were asked later to perform a cued recall of verbal propositions. Finally, Experiment 3 used an old/new recognition paradigm to examine participants' ability to accurately recognize different logical connectives. The results of the three experiments are discussed in relation to theories of representation of possibilities and theories of reasoning.  相似文献   
40.
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