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珠心算古来有之。史料记载,在珠算盛行的明、清时代即出现珠心算,手按算盘不用拨珠即能进行复杂的计算。当时称为“善算者”,是天才的个人行为。而现代珠心算教育,是在小学珠算教育与小学数学“口算、笔算、珠算三算结合教学”基础上创新发展起来的新事物。它能有效地开发儿童智力潜能。 相似文献
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The 6th International Conference on Environmental Catalysis(6th ICEC)was held in Beijing from September 12 to September 15,2010.The ICEC is a series of con- ferences that was initiated in Pisa(1995)and followed up in Miami Beach(1998),Tokyo(2001),Heidelberg(2005) and Belfast 相似文献
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Nor Aishah Saidina Amin 《天然气化学杂志》2006,15(4):I0003-I0003
I would like to take this opportunity to thank the editorial board of Journal of Natural Gas Chemistry for allowing me to write a preface for this special column. The articles appearing in this section are specially selected from the First International Conference on Natural Resources Engineering and Technology 2006 (INRET 2006). In line with the theme of JNGC, the selected articles are focused on natural gas or low hydrocarbon conversions to important chemicals, fuels and materials. The conference was held on July 24-25, 2006 in Marriott Putrajaya, Malaysia. It was organized by the Chemical and Biotechnology (ChemBio) Focus Group, under the Research Management Centre, Universiti Teknologi Malaysia. 相似文献
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Jordan Hristov Hongzhong Li 《中国颗粒学报》2007,5(1):I0001-I0002
This special issue on Magnetic Particulate Systems (MPS) represents a unique forum among people working in this broad, challenging and multifaceted scientific area with applications varying from medicine to environment and from ultra-fine to coarse particulate dispersions, and comprising subjects concerned with ferrofluids, magnetic bio-carriers, magnetically assisted fluidization and hyperthermia, etc. - subjects which have their own respective histories and trends yet lacking collation to provide a global perspective and interaction for mutual progress. 相似文献
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《北京师范大学数学系史》是国内第一部关于数学系史的著作 ,李仲来教授任主编 .上篇介绍了北京师范大学数学系建系近百年来的发展历史及现在的状况 .在几代数学家的共同努力下 ,参与了中国现代大学数学教育 ,数学研究的发展规律历程 ,做出了应有的贡献 .下篇分类概述了中国共产党组织在数学系的建设与发展 ,数学与数学教育研究所 ,本科生教育 ,研究生教育 ,科研方向 ,教研室 ,教授 ,模糊信息处理与模糊控制器国家专业实验室 ,资料室 ,计算机房和《数学通报》杂志的介绍 .1 1个附表和 2 3个附录详细列举了与数学系有关的各种数据和资料 ,从而可以加强对数学系近百年来的历史的总体了解 .本书于 2 0 0 2年 8月由北京师范大学出版社出版 ,每册定价 2 0元 ,再加邮购费 1 5 % .需购买者请通过邮局汇款到 :1 0 0 875 北京市海淀区新街口外大街 1 9号北京师范大学数学系王迎迎收 相似文献
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前言(英文) 总被引:1,自引:0,他引:1
正We are now facing the emerging problems of how to use the oil, natural gas and coal-based existing energy in a more efficient way and how to develop new energy sources including solar and bio-energy under the resource- diminishing circumstances. In the meantime, environmental protection is a key to the sustainable development of the world. 相似文献
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前言课的主要教学功能是使学生的思维发生碰撞,初步窥探到化学世界的美妙,并能明确自身的不足,激发出需要学习的欲望。结合实例,阐述新课程理念下,前言课中如何紧密联系实际,体现探究过程,并圆润过渡,自然生成。 相似文献
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1900年8月5日,法国数学家David Hibtert(1862-1943)在巴黎国际数学家大会上作了题为《数学问题》的著名讲演,这是载入数学史册的重要讲演,他在讲演的前言和结束语中。对数学的意义、源泉、发展过程及研究方法等,发表了许多精辟的见解,而整个讲演的主体,则是他根据19世纪数学研究的成果和发展趋势而提出的23个数学问题,这些问题涉及现代数学的许多重要领域。 相似文献
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