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三峡移民管理是一项十分复杂艰巨的社会系统工程。移民管理中出现的一些问题令人触目惊心。如何实施高效率的管理 ,是有关方面正在研究的课题。现利用系统管理理论和方法 ,对进一步加强移民管理工作提出一些对策和建议  相似文献   
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Ultraviolet radiation is generally considered to have been discovered by Johann Wilhelm Ritter in 1801. In this article, we study the reception of Ritter’s experiment during the first decade after the event—Ritter’s remaining lifetime. Drawing on the attributional model of discovery, we are interested in whether the German physicists and chemists granted Ritter’s observation the status of a discovery and, if so, of what. Two things are remarkable concerning the early reception, and both have to do more with neglect than with (positive) reception. Firstly, Ritter’s observation was sometimes accepted as a fact but, with the exception of C. J. B. Karsten’s theory of invisible light, it played almost no role in the lively debate about the nature of heat and light. We argue that it was the prevalent discourse based on the metaphysics of Stoffe that prevented a broader reception of Ritter’s invisible rays, not the fact that Ritter himself made his findings a part of his Naturphilosophie. Secondly, with the exception of C. E. Wünsch’s experiments on the visual spectrum, there was no experimental examination of the experiment. We argue that theorizing about ontological systems was more common than experimenting, because, given its social and institutional situation, this was the appropriate way of contributing to physics. Consequently, it was less clear in 1810 than in 1801 what, if anything, had been discovered by Ritter.  相似文献   
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高校考试评价浅探   总被引:2,自引:0,他引:2  
目前高校考试评价有其合理的一面,但也存在着种种弊端:评价内容比较片面、评价方式比较单一、评价标准比较机械。因此,我们必须构建一套全新的考试评价体制,其具体措施有:评价内容科学化,评价方式多元化,评价标准灵活化。  相似文献   
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纤维艺术虽然是一种常见的艺术形式,可是很多人对纤维艺术的了解仍然非常有限并且相当不确切,误认为纤维艺术是近几年才兴起的一个艺术门类,甚至认为它是一种外来的艺术形式.其实不然,从其发展的历程,特别是它名字的变更和使用的材料、技法来看,这种艺术形式在中国古已有之,而且在改革开发后至今有着持续而蓬勃的发展.本文将对此作一简要讨论和分析.  相似文献   
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