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地理课堂“高效”问题初探
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作者 刘丹 《现代教育科学(中学教师)》 2013年第4期111-111,共1页
实现课堂有效教学的核心是问题的设计。问题的质量、深度,直接影响教学效果和学生思维发展。对此,笔者结合自己的教学实践,谈谈到底什么是“高效”问题?“高效”问题在地理课堂教学中有哪些功能?怎样在地理课堂教学中进行“高效”... 实现课堂有效教学的核心是问题的设计。问题的质量、深度,直接影响教学效果和学生思维发展。对此,笔者结合自己的教学实践,谈谈到底什么是“高效”问题?“高效”问题在地理课堂教学中有哪些功能?怎样在地理课堂教学中进行“高效”提问? 展开更多
关键词 地理教学 “高效”问题 特征 功能 策略
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Efficient Security Sequencing Problem over Insecure Channel Based on Homomorphic Encryption
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作者 Mingxu Yi Lifeng Wang Yunpeng Ma 《China Communications》 SCIE CSCD 2016年第9期195-202,共8页
In the field of sequencing of secret number,an important problem is how to establish an efficient and secure protocol for sorting the secret number.As a powerful tool in solving privacy sequencing problems,secure mult... In the field of sequencing of secret number,an important problem is how to establish an efficient and secure protocol for sorting the secret number.As a powerful tool in solving privacy sequencing problems,secure multipart computation is more and more popular in anonymous voting and online auction.In the present study,related secure computation protocol for sequencing problem is not many by far.In order to improve the efficiency and safety,we propose a security sequencing protocol based on homomorphic encryption.We also give analysis of correctness and security to highlight its feasibility. 展开更多
关键词 homomorphic encryption privacy sequencing problem secure multipart compu- tation information transformation
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Apply of Low-Carbon Technology in Building Energy Conservation in Hot Summer and Cold Winter Area
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作者 Jianlong Liu Jinghua Yang Hanqing Wang Haiping Zhang Yiyu Chen 《Journal of Energy and Power Engineering》 2014年第2期292-297,共6页
Building energy conservation is the basis for carbon emission reduction, through elaborating the relationship between low carbon and energy efficient building. It points out that the construction of energy-saving emis... Building energy conservation is the basis for carbon emission reduction, through elaborating the relationship between low carbon and energy efficient building. It points out that the construction of energy-saving emission reduction is an effective means to solve the problems of high energy consumption of the building, and it is also an important measure for China's carbon emission reduction. According to the climate characteristics in hot summer and cold winter area, low carbon technology suitable for the construction of energy-efficient hot summer and cold winter area is proposed which is based on the analysis of the current main building energy-saving technical measures. 展开更多
关键词 Building energy conservation low-carbon building renewable energy.
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