排序方式： 共有127条查询结果，搜索用时 265 毫秒
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给出一种新的通讯密码——多参数线性剩余码的编码方法和数学原理,并阐述此码的优点和它的实用价值。 相似文献
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探讨了在《线性代数》教学过程中关于矩阵乘积的问题。首先是矩阵乘法引入时要注意的问题,其次是在矩阵分块以后探讨矩阵乘积的规律,然后是用内积的观点来看待矩阵的乘积。这样从多个侧面引导学生去理解矩阵的乘积可以开阔他们的视野,提高他们分析问题和解决问题的能力。 相似文献
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Development in the ability of 11-year-olds to solve numerical problems of addition, multiplication, and proportion was analysed by means of three Rasch models of change. The students, who had participated in a New Zealand numeracy project in 2002, comprised two groups that differed in socio-economic status: 1,274 students came from low socio-economic areas, and 564 students came from high socio-economic areas. The Rasch analysis showed that students from low socio-economic areas found all three tasks difficult, although they made some progress during the course of the year. Their development was consistent with a model in which each student underwent their own specific development. The development of students from high socio-economic areas was best described as stemming from two latent classes, one of which made substantial and uniform progress and the other of which made no progress. The cumulative nature of the tasks meant that failure on addition propagated to failure on multiplication and proportional reasoning. 相似文献
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人类从生物进化到创造进化再到信息增殖进化 ,必将经过信息文明的中介 ,才能完成对生态规律 (结构信息 )、生态伦理 (交换信息 )、生态美感 (信息范型 )的全球生态文明价值观的塑造过程 相似文献
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民间剪纸作为一种民间艺术形态，广泛地依附于民俗事项中，并成为一些民俗事项完成和实现过程中不可缺少的形象栽体。民间剪纸是劳动者在特殊的历史、文化、生存背景下创造的文化产品。其所包含的文化价值已远远超越其本身的审美意义。分析民间剪纸在民俗事项中的具体使用及历史溯源，探究其图形及其隐喻中内在的文化价值，具有丰富的多学科价值，同时从剪纸的活态文化空间中可以更好地体验广大劳动妇女的生存心态。 相似文献
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Elizabeth Thoman 《Clearing house (Menasha, Wis.)》2013,86(6):278-283
In this article, the author presents an innovative approach to teaching multiplication facts for children in middle school or younger. After introducing the dangers of some contradictions that persist, relating a brief summary of related research and guidelines regarding math facts and their relation to strategic approaches to more complex math, including problem solving, the author provides an in-depth discussion of the process of learning multiplication tables. The author presents a method for teaching children to learn these facts by rote without the tediousness of that technique. Providing the answers encourages automatic learning easily without testing. Remarkable results with one class of eighth-grade students support the benefit of this innovative method. 相似文献
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孙艳秋 《济宁师范专科学校学报》2009,30(2):17-21
王朔小说对中国新时期文化的发展影响深远。王朔个性化的文学创作有力地推动了文化多元时代的到来。王朔小说使文学回归到了庸常和琐碎的原生态中;而其商业策略的成功为文学的市场化提供了宝贵的感性经验,从此文学艺术大踏步地走向市场。 相似文献
48.
崇拜种族繁衍的民俗——宾阳舞炮龙运动的社会学考证 总被引：1，自引：0，他引：1
周华 《南京体育学院学报(社会科学版)》2009,23(3):54-57
以社会学、人类学为视角,运用文献资料、专家访谈、逻辑分析等方法,对广西炮龙之乡——宾阳县舞炮龙运动的文化特征及社会功能进行深入的研究。研究表明：流传于广西宾阳地区的舞炮龙不仅具有鲜明的民族传统体育文化特性,而且对人类社会的发展、社会的稳定、维系种族繁衍、出生人口素质的提高、促进社会交流和经济发展等具有独特的社会功能价值。 相似文献
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本文介绍了大数乘法器的一种高速实现算法,采用了Booth算法和Wallace Tree算法,通过减少部分积,并把大数加法拆分为32位的加法来实现对于大数乘法的高速运算.其核心的数据通路仅有一个16位的乘法器和一个32位的加法器组成,真正实现了以"小"资源实现了"大"运算. 相似文献
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