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信息科技课程中计算思维多层进阶式目标体系设计 被引量:2
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作者 冯友梅 王昕怡 +2 位作者 温佳 王壮伟 颜士刚 《电化教育研究》 CSSCI 北大核心 2024年第5期51-57,66,共8页
计算思维是重要的信息科技学科核心素养,但面向计算思维的结构化教学体系尚未形成。经分析,计算思维目标体系的缺失是其直接原因。鉴于此,文章以“知识与思维内在统一”为基本立场,将计算思维转换为与其内在统一的知识结构——计算思维... 计算思维是重要的信息科技学科核心素养,但面向计算思维的结构化教学体系尚未形成。经分析,计算思维目标体系的缺失是其直接原因。鉴于此,文章以“知识与思维内在统一”为基本立场,将计算思维转换为与其内在统一的知识结构——计算思维二维描述框架,并设计知识结构水平的判断标准——知识结构九水平分类体系。在此基础上,给出二者相结合的计算思维目标体系设计方案并结合实例详解:首先,将计算思维二维描述框架中的要素逐层分解以保证各教学单位均有其聚焦的计算思维要素;而后,以知识结构九水平分类体系为依据,形成纵向上层层细化、横向上计算思维(知识)结构水平不断提升的计算思维多层进阶式目标体系。该目标体系设计方案可结束信息科技课程内容教学与计算思维教学两条线的尴尬局面,使计算思维在与课程内容融合统一的教学路径中真正落地。 展开更多
关键词 信息科技课程 计算思维 目标体系 多层进阶式 知识结构水平分类体系
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逆作法单建人防工程结构设计技术
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作者 韦熙玲 《建筑技术开发》 2021年第10期9-10,共2页
根据采用逆作法施工的单建人防工程,在结构设计过程中分别对周边围护结构、水平结构体系以及竖向支承体系等进行结构技术探讨。结果表明逆作法施工大幅减小了市中心交通繁忙的压力,减少了临街商铺的影响,缩短了工期,取得了良好的社会效果。
关键词 人防工程 逆作法 围护结构 竖向支承体系 水平结构体系
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Vulnerability of Large City and Its Implication in Urban Planning: A Perspective of Intra-urban Structure 被引量:9
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作者 XIU Chunliang CHENG Lin +1 位作者 SONG Wei WU Wei 《Chinese Geographical Science》 SCIE CSCD 2011年第2期204-210,共7页
Vulnerability is a new field and analytical tool in the study of urban safety. Analysis and assessment of vulnerability provide a new basis for urban planning. This study constructed a quantitative index system for as... Vulnerability is a new field and analytical tool in the study of urban safety. Analysis and assessment of vulnerability provide a new basis for urban planning. This study constructed a quantitative index system for assessing vulnerability, based on the city′s sensitivity and emergency response capacity. City size, density, and spatial form influence a city′s sensitivity to crises and risks, to which vulnerability is positively related. Levels of socio-economic development, infrastructures, and emergency management contribute to a city′s emergency response capacity, with which vulnerability is inversely associated. Vulnerability of 19 large Chinese cities was assessed. Harbin and Shenzhen demonstrated the highest and lowest vulnerability among 19 cities, while Beijing, Shanghai and Guangzhou ranked the 5th, the 9th and the 12th. Spatially, northern cities tended to be more vulnerable than southern cities. And the differences in vulnerability among cities were explored based on cities′ physical geography conditions, level of socioeconomic development, infrastructures, regional status, history of disaster, history of urban planning and development, government policies, etc. 展开更多
关键词 large city VULNERABILITY urban safety urban planning
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