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

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.     

Should Children Attend Their Parent's Funerals?

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.     

力量锻炼在控制体重中的作用机理初探

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。     

关注教师的教育情感

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。     

网上体育信息资源的获取与利用

在分析Internet网上体育信息资源凌乱和难于获取利用的基础上,提出了从网上数据库,网上报刊、书目、网上新闻、网上BBS、网上个人主页、网上统计数据,网站导航等几条途径快速检索体育信息方法和技巧,阐述了强化体育信息意识,从数量上、质量上丰富网上体育信息资源的设想和思路.     

运动减肥机制探析———酰化刺激蛋白的作用及其调节

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。     

浅谈IP地址的管理和子网的划分

针对目前互连网上许多用户不能合理使用和分配IP地址,造成大量IP地址浪费,从而导致IP地址资源紧张的现象。阐述了如何利用划分子网以及对IP地址进行合理的分配和管理,从而有效地节约IP地址资源。     

以软交换为核心技术的NGN

网络发展的现状以及下一代网络 ( NGN)的发展已经成为人们关注的焦点 ,本文首先介绍了网络发展的现状 ,以及发展的总体趋势 ,由此引出下一代网络的模型 ,然后重点分析了下一代网络中的技术核心——软交换的基本概念 ,关键技术以及深远意义。文章最后对目前的网络如何向 NGN平滑演进提出了自己的几点思路。     

赛前减体重对运动员运动能力的影响

赛前减体重能够对运动员的运动能力、身体机能和营养健康造成影响。笔者主要综述了国内外对减体重的研究资料,详细的对这一影响进行了概述,并认为在减体重时应用身体成分、蛋白质、无机盐和维生素代谢以及身体免疫能力等数个指标进行科学检测。     

网络存储领域内的核心技术——iSCSI

数据的异地实时存储日趋增多使得网络存储技术日渐重要。iSCSI 作为网络存储的核心技术充分利用了现有IP 网络的成熟性和普及性优势, 对经济合理以及便于管理的存储设备提供了直接访问的能力, 其低廉、便捷、开放、安全、标准等众多优异品质在未来必将得到充分的完善与发展。