Modelling the long-run learning impact of the Covid-19 learning shock: Actions to (more than) mitigate loss     

《International Journal of Educational Development》2021

This paper uses a calibrated “pedagogical production function” model to estimate the potential long-term losses to children’s learning from the temporary shock of Covid-19 related school closures. It then models possible gains from two mitigation strategies. Without mitigation, children could lose more than a full year’s worth of learning from a three-month school closure because they will be behind the curriculum when they re-enter school and will fall further behind as time goes on. Remediation when children return to school reduces the long-term learning loss by half, but still leaves children more than half a year behind where they would have been with no shock. Remediation combined with long-term reorientation of curriculum to align with children’s learning levels fully mitigates the long-term learning loss due to the shock and surpasses the learning in the counterfactual of no shock by more than a full year’s worth of learning. Systems need to begin planning now for remediation programmes, and as they do so they should build programmes and train teachers in ways that can continue to produce benefits beyond the period immediately following reopening.  相似文献   

基于正态云可拓理论的锚泊安全评价     

鲁峰  李伟  宁君  于仁海 《上海海事大学学报》2020,41(4):30-35

为提高锚泊安全评价精度，保障船舶锚泊安全，针对传统锚泊安全评价方法未考虑评价等级界限的不确定性和模糊性等问题，将正态云可拓理论应用于锚泊安全评价中。采用层次分析法和基于可拓学的简单关联函数确定权重的方法分别确定锚泊安全评价指标的主观和客观权重，通过经验因子将主观与客观权重进行结合。构建基于正态云可拓理论的锚泊安全评价模型，计算待评物元与标准可拓物元的关联度，通过信息熵理论确定锚泊安全等级。根据信息熵理论定义可信因子，使得评价结果的可信度易于定量计算。实例计算验证了本模型的有效性和优越性。  相似文献   

体育多种预测方法的比较研究     

李瑞文  蔡忠建  姜伯乐 《北京体育大学学报》2004,27(12):1654-1656

运用3种不同的方法所建立的多元回归预测模型,其回归预测值的准确度均达到了99.26%以上,其回归的预测值与实际值的方差分析检验均呈无差异性,P》0.50水平.说明3种不同的方法所建立的预测模型的预测值均具有显著性意义.在3种建模方法中,均有评价作用,且其评价目的也不尽相同.在体育运动实践中可依据研究的目的,选择建模方法,以提高体育预测研究的效益.  相似文献   

Should Children Attend Their Parent's Funerals?     

John Holland 《Pastoral Care in Education》2004,22(1):10-14

The paper discusses elements of the findings of 'Iceberg', a doctoral study at the University of York addressing many issues of child bereavement through a retrospective study of nearly one hundred individuals who had either experienced the death of a parent when they were at school, or were the surviving parent of such a child. The research revealed issues of lack of control and information for children after a parental death. Forty-seven per cent of those in the study attended the funeral of their parent. There was correlation between the age of children and attendance at the funeral. Of the fifty-three per cent of children not attending, twenty-four per cent of them were forbidden to attend, whilst eleven per cent of them were distracted from attending the funeral, such as being sent to school or a neighbours and being unaware that it was taking place. None of the children attending the funeral reported any negative experiences, and two thirds of them reported it as a positive or helpful event. In contrast, over three-quarters of those not attending later wished that they had. Over a third had feelings of regret, others feeling that they had been excluded from the family at the time of the death, and felt anger, hurt, and frustration. The conclusion was that the best strategy is to give children informed choice about whether or not to attend. If children do attend a negative outcome seems unlikely, but it would be prudent to prepare them as to what to expect at the ceremony.  相似文献   

力量举重的起源现状与发展     

李光敏  黄卓  龚建音 《湖北体育科技》2004,23(2):155-156,159

力量举重项目对许多人来讲既陌生又刺激，普及和推广这项运动很有必要。通过对力量举重的起源、现状与发展的探索，结果表明：力量举重运动在欧美等国很流行，美国尤甚，而国内仍然还处于起步阶段。要改变这种落后的局面，应注意宣传力度、企业参与和投入、鼓励女性参加这项运动。  相似文献   

力量锻炼在控制体重中的作用机理初探   总被引：4，自引：0，他引：4  

王学锋 《山东体育科技》2004,26(2):26-28

力量与力量耐力是健康体适能的重要组成成分。研究表明，力量锻炼在控制体重中的作用机理主要是通过以下两种途径实现的：一是增加安静时的能量代谢率；二是增加脂肪氧化。建议人们，要获得最佳健康并有效控制体重，应将有氧运动与力量锻炼相结合。  相似文献   

关注教师的教育情感     

胡贵勇 《遵义师范学院学报》2002,4(1):52-54

作者对目前教师教育情感的失落作了简要描述,以期引起重视。  相似文献   

我国与世界优秀排球运动员身体形态与扣球高度特征的对比分析   总被引：19，自引：2，他引：17  

李军 《中国体育科技》2004,40(2):46-47

采用文献资料调研、数理统计和比较研究等方法,对我国和世界优秀排球运动员的年龄、身高、体重、克托莱指数和扣球高度进行了对比分析。我国男、女排与世界强队相比,体重与克托莱指数存在非常显著差异,说明我国排球运动员身体充实度和肌肉力量不如世界优秀运动员,建议制定我国排球运动员选材模式和评价标准。  相似文献   

运动减肥机制探析———酰化刺激蛋白的作用及其调节   总被引：2，自引：0，他引：2  

何玉秀  张海峰  焦广发 《天津体育学院学报》2006,21(4):319-322

酰化刺激蛋白是脂肪组织分泌的一种激素，在调节脂肪代谢和能量平衡方面发挥重要作用。它一方面能够提高脂肪细胞捕获脂肪酸和合成甘油三酯的能力；另一方面可以通过抑制激素敏感脂酶的活性来抑制甘油三酯的分解。C3（-/-）（ASP缺乏）鼠所表现出的肥胖抵抗特征对于防肥减肥而言具有诱人的前景。综述了ASP的来源、生物学作用以及缺乏后的生物学特征，并对其在运动减肥机制中可能发挥的作用进行探讨。  相似文献   

运动减肥的机制及运动处方   总被引：25，自引：2，他引：23  

刘琴芳 《中国体育科技》2002,38(11):61-64

通过文献资料调研 ,综述了近年来运动减肥机制及运动处方的研究成果  相似文献