教育技术协同创新与多元发展——2012教育技术国际学术会议综述

2012年12月,2012教育技术国际学术会议暨院长、系主任联席会议在华南师范大学召开。围绕"教育技术协同创新与多元发展"这一主题,国内外教育技术领域专家学者从专业定位、学科建设、实践发展等方面展开了热烈研讨。本文对大会提出的理念、技术和成果作了梳理。

Effect of Nitrogen Application on Grain Filling in Maize with Different Nitrogen Efficiency

There are significant differences in nitrogen absorption and utilization effi- ciency among different maize varieties. So it is very essential to determine nitrogen efficiencies of different maize varieties. The effect of nitrogen application on maize growth can be reflected at the grain filling stage. Many scholars have researched the differences in grain filling characteristics among different maize varieties under the same nitrogen application conditions, but there are reare reports on the differ- ences under different nitrogen application conditions. In this study, the grain filling dynamics of maize were observed so as to determine the differences in nitrogen efficiency and to further compare the differences in grain filling characteristics a- mong different maize varieties. The test was carried out with Tunyu 99, Luyu 19 and Xianyu 335 as the materials during May 1st to October 7th, 2013. Under the nitrogen application levels of NO （0 kg/hm2 of pure nitrogen）, N1 （140 kg/hm2 of pure nitrogen） and N2 （210 kg/hm2 of pure nitrogen）, the filling dynamics of upper- and middle- lower-part grains of spring maize were studied. The results showed that among the three nitrogen application level, the grain fresh weight and dry weight of Tunyu 99 ranked as N2〉NI〉N0; the grain fresh weight and dry weight of Luyu 19 ranked as N1〉N2〉N0; the grain fresh weight and dry weight of Xianyu 335 ranked as （N1, N2）〉N0, and there was no significant difference between N1 and N2. Un- der the nitrogen application level of N1, Luyu 19 showed the best growth; under the nitrogen application level of N2, Tunyu 99 showed the best growth, The growth ad- vantage of Xianyu 335 was unobvious under neither N1 nor N2 nitrogen application levels. The development-promoting effect of nitrogen application was more obvious in upper-part grains than that in middle-lower-part grains.

电力需求侧管理、分析与决策系统的设计与实现

电力需求侧管理是一项惠及各方的系统工程。随着经济的发展,用电矛盾越来越严重,电力需求侧管理也日益重要。本文首先介绍了电力需求侧管理的相关技术和发展趋势。运用宏观调控理论和数理统计的方法,设计了电力需求侧管理、分析与决策系统,并详细阐述了该系统的目标、原理、功能及实施情况,为需求侧管理工作提供了经验,为电网的安全运行和经济运行提供了有力参考。

中职学前教育钢琴多元化教学有效性探究

伴随着我国社会经济建设脚步的不断加快,人们对于日常生活中的精神追求程度上升到了一个新的高度。而钢琴作为一种优雅的乐器,受到了越来越多人的关注。中职学生由于从初中升学不久,学习能力方面还较弱,在以往的学习生活中基本上未接触过乐器领域学习,使得学习难度较大。同时伴随着学习钢琴人数的不断增加,给钢琴教学质量带来了一定的影响,由此多元化教学理论应运而生。本文将根据目前我国在钢琴教学方面的不足进行分析,并通过增加多元化的教育教学方式为基础,以此来提高中职学前进行钢琴学习的教学效率。

化解价格争议纠纷彰显公共服务品牌效应——基于“总对总”在线诉调对接试点工作实践探索

价格争议纠纷调解充分体现以人民为中心的发展思想,具有扎根基层、贴近群众、聚焦价格、服务民生的特点,在解决老百姓急难愁盼的“关键小事”方面具有显著而独特的优势。“总对总”在线诉调对接工作开展以来,价格争议纠纷调解工作的发展进入“快车道”,有效化解民商事诉讼案件中的各类价格矛盾,成为价格认定机构着力打造的价格公共服务新品牌。本文在深入实践调查研究价格争议纠纷调解工作开展情况的基础上,有针对性提出进一步完善工作的建议,为多元、高效、便捷化解价格纠纷、促进社会和谐稳定提供新经验。

走向21世纪的中国国际旅行卫生保健——中国国境卫生检疫工作改革与国际旅卫生保健发展

美国《时代》周刊发表文章指出:21世纪,一个名副其实的全球性旅行时代来临。旅游业同石油和汽车一起被称为世界三大经济支柱产业。1996年,中国入境出境人员已达1.1亿人次,国际旅游收入超过100亿美元,国内旅游收入超过1600亿人民币。随着我国认真贯彻党的"十五大",进一步扩大对外开放,国内外旅游业迅速发展,我国国际旅行卫生保健必将取得蓬勃发展。