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   51篇
  免费   2篇
  53篇
  2021年   3篇
  2020年   2篇
  2019年   5篇
  2018年   4篇
  2017年   1篇
  2016年   2篇
  2015年   3篇
  2014年   5篇
  2013年   3篇
  2012年   1篇
  2011年   3篇
  2010年   4篇
  2009年   1篇
  2008年   1篇
  2007年   2篇
  2006年   4篇
  2005年   2篇
  2004年   1篇
  2002年   3篇
  1997年   1篇
  1960年   2篇
排序方式: 共有53条查询结果,搜索用时 0 毫秒
51.
52.
Many philosophers have defended the view that well-off people or nations have an obligation to assist people who suffer from famine in less developed areas of the world. However, in contrast to this outlook, some theorists have claimed that it is ethically wrong to provide this kind of assistance. In this article the non-assistance view is discussed. It is argued that even if a neo-Malthusian population theory is correct and if we accept a maximizing policy which allows the relevant weighing of evils, there may still be an obligation to assist the victims of starvation in poor countries.  相似文献   
53.
Jesper Hoffmeyer 《Zygon》2010,45(2):367-390
A sign is something that refers to something else. Signs, whether of natural or cultural origin, act by provoking a receptive system, human or nonhuman, to form an interpretant (a movement or a brain activity) that somehow relates the system to this “something else.” Semiotics sees meaning as connected to the formation of interpretants. In a biosemiotic understanding living systems are basically engaged in semiotic interactions, that is, interpretative processes, and organic evolution exhibits an inherent tendency toward an increase in semiotic freedom. Mammals generally are equipped with more semiotic freedom than are their reptilian ancestor species, and fishes are more semiotically sophisticated than are invertebrates. The evolutionary trend toward the production of life forms with an increasing interpretative capacity or semiotic freedom implies that the production of meaning has become an essential survival parameter in later stages of evolution.  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