An analysis of the reach and effectiveness of distance learning in India during school closures due to COVID-19     

《International Journal of Educational Development》2021

In India, more than 276 million children and youth were out of school for extended periods since March 2020 due to school closures in response to COVID-19. A key challenge has been how to measure the impact of responses to continuity of learning both to ensure more effective responses in the event of further disruptions, but also to help the education community conceptualize more creative and effective approaches to learning, through blended and flexible approaches. This study reflects on the findings from a UNICEF survey targeting parents and adolescents across 6 states in India, and identifies lessons learned for addressing learning inequities during future school closures. We focus on measuring three key variables – access to technology, their utilization, and perceived learning for different profiles of children. As students began learning from home, technology access rates in households were initially used to determine the estimated maximum reach of different distance learning modalities during school closures. Beyond access, we find significant variations in adolescents’ use of technology for learning purposes and their perceptions of learning, linked to the type of remote learning modality, gender, location and type of school. We discuss the implications for government strategies and policies to ensure better utilization of technologies which are available in households and to address equity gaps in learning opportunities.  相似文献   

UTAUT模型在国内IT/IS采纳实证研究中的应用现状分析     

张熠  徐艺玲  程慧平  金玲 《现代情报》2018,38(11):123-129

[目的/意义]对UTAUT模型在国内IT/IS采纳中的应用现状进行归纳总结，指出UTAUT模型应用中存在的不足、发现可能的发展趋势，以期启发国内应用UTAUT模型进行IT/IS采纳的未来研究。[方法/过程]选用中国知网学术期刊数据库，以UTAUT为检索词进行全文检索，采用文献计量法和内容分析法从研究主题、理论或模型应用方式、调查对象、采纳行为影响因素4个方面对筛选出的实证研究文献进行归纳整理总结。[结果/结论]国内应用UTAUT模型进行IT/IS采纳研究主要围绕互联网+"X"、移动服务领域展开，大部分文献通过扩展UTAUT模型方式，以学生为调查对象借助结构方程模型进行分析，实证研究中萃取的影响因素除UTAUT模型常规变量外，更多关注的是风险、成本、信任。UTAUT模型应用方式主要分为：单一模型、模型扩展、模型组合、模型整合4种方式；按影响因素属性不同可以分为：技术因素、经济因素、个人因素、环境因素和质量因素；按影响因素的作用原理分为：直接因素、间接因素、两栖性因素、调节变量。最后，对未来研究提出一些建议。  相似文献   

河北省本科高校科技创新能力评价 —基于2012—2016年高等学校科技统计数据的分析     

李春林 《科技管理研究》2018,(2)

对高校科技创新能力的研究现状进行述评，基于2012—2016年我国《高等学校科技统计资料汇编》的统计数据，运用因子分析法，首先对河北省本科高校科技创新能力进行了总体评价，然后对河北省34所公办本科院校在科技人力投入、获取科技经费和承担课题、科技产出、成果鉴定授奖等科技创新能力评价指标进行比较分析，总结河北省高校科技创新能力的现状，提炼科技资源配置存在的问题，提出了提升河北省高校科技创新能力的“2 6”模式。  相似文献   

“适用技术”研析     

赵华 《科技管理研究》2018,(19)

经济学家舒马赫批判经济至上、效率至上的当代科技体系,提出了人文化的"适用技术"。学者们对适用技术的思想源起、内涵、特征、发展状况等方面展开了广泛的研究与讨论。适用技术经历了兴盛—衰落—再提倡的过程,具有人文、生态、经济、科技等方面的现实价值。  相似文献   

对刊文《科技管理研究》的计量分析——基于知识图谱视角     

赖志杰  李炳超  李细金  黄宝强 《科技管理研究》2018,(14)

本文通过在CNKI数据库中搜索了来源期刊为《科技管理研究》(2003-2016.9)的相关文献,运用科学计量分析方法,对其现状和研究热点进行了分析。研究发现,技术创新、影响因素、知识产权、产业集聚、指标体系、科技创新等都是近年来研究的热门话题。  相似文献   

国内外农业科技政策进展及我国新兴农业科技政策研究   总被引：1，自引：0，他引：1  

林青宁  毛世平 《科技管理研究》2018,(16)

旨在厘清典型发达国家农业科技政策重点,梳理其为加快农业科技革命制定的政策措施,分析中国在新农业科技革命和产业变革中已有科技基础和政策制度,并与发达国家相关政策对比,进而总结不足并提出提升中国农业科技创新能力和产业竞争力政策建议。  相似文献   

林业科技期刊的办刊现状及发展路径探讨——以《湖北林业科技》为例     

郑京津  袁传武  蔡三山  张家来 《中国科技期刊研究》2018,29(8):860-865

【目的】 随着国家对生态文明的重视，人民对优美生态环境的需要，林业科技期刊作为林业科学知识的传播媒介，在生态文明建设中的作用愈来愈重要。探索中文期刊的办刊之路，为切实提高办刊质量提供参考。【方法】 以《湖北林业科技》为例，分析目前林业科技期刊的办刊现状，针对期刊发展中存在的体制改革、稿源不足、稿件缺乏严格把关、办刊动力不足、自身推广不力、刊发文章内容混杂、低水平运行难有突破等质量问题以及人才队伍建设问题，探讨期刊的发展路径。【结果】 提出编营分离模式，契合定位、做强主业，以及走专家学者办刊之路等办刊策略。【结论】 符合自身发展特点的编营分离模式能为林业科技期刊提供好的办刊思路和办法，促进中文期刊打破发展瓶颈。  相似文献   

Synergetic governing controller design for the hydraulic turbine governing system with complex conduit system     

Jianzhong Zhou  Yuncheng Zhang  Yang Zheng  Yanhe Xu 《Journal of The Franklin Institute》2018,355(10):4131-4146

The hydraulic turbine governing system plays an indispensable role in maintaining the stability of electrical power system. In this paper, synergetic control theory is introduced to enhance the regulating ability of the hydraulic turbine governing system. For the purpose of describing the characteristics of objective system and deducing the synergetic control rule, a nonlinear mathematic model of a hydraulic turbine governing system with long tail race and two surge tanks is established. Furthermore, the nonlinear characteristic of the hydraulic turbine is described by six variable partial derivatives. For further investigation, the hydraulic turbine governing system is conducted to running under load condition when its coaxial generator connects to an infinite bus. Simulation experiments have been made under both load disturbance and three-phase short circuit fault conditions to compare the dynamic performances of proposed synergetic governing controller and classic PID controller. The results indicate that the proposed synergetic governing controller is an effective alternative in normal condition and a superior one in emergency. Moreover, the robustness of synergetic governing controller has also been discussed at the end of this paper.  相似文献   

Technology adoption,consumer inattention and heuristic decision-making: Evidence from a UK district heating scheme     

Andrew Burlinson  Monica Giulietti  Giuliana Battisti 《Research Policy》2018,47(10):1873-1886

This paper contributes to the debate on the energy efficiency paradox according to which consumers fail to adopt cost-effective, energy efficient technologies over less efficient technologies and therefore fail to reduce energy consumption. Both traditional and behavioural theories are used to investigate the decision-making process of residential consumers with empirical evidence based upon a specially designed quasi-experimental survey of 784 households on the decision to connect to a district-heating system, a more energy efficient alternative to individual heating systems. The results suggest an internal discount rate of around 36 per cent for homeowners, a signal that consumers undervalue future energy costs. We also find the household’s decision to be negatively affected by years of payback up to around 7–8 years. Our findings suggest that neglecting consumer inattention and heuristics can lead to biases which cast doubt on the existence of the energy efficiency paradox. We believe that these results help to explain why some consumers are unlikely to invest in energy efficient technology, particularly those on low incomes.  相似文献   

Nonlinear optimal control with disturbance rejection for asteroid landing     

Shen Kang  Jianan Wang  Chaoyong Li  Jiayuan Shan 《Journal of The Franklin Institute》2018,355(16):8027-8048

This paper presents an optimal solution to asteroid soft landing problem, on the base of $\theta ?D$ control technique and disturbance rejection mechanism. The control objective is to drive a probe to reach the surface of an asteroid with a desirable line-of-sight angle and zero velocity, eliminating the influence of external disturbance. Firstly, elementary $\theta ?D$ technique is applied in the absence of disturbance to tackle the nonlinear optimal control problem. Secondly, the disturbance is estimated in the fast-estimation framework with explicitly bounded estimation error. Afterwards, an integrated control protocol is presented in a feed-forward structure by the aid of an additional variable-structure term to ensure stability under time-varying disturbance. Simulation results of the proposed approach compared with the results of elementary $\theta ?D$ method and robust $\theta ?D$ method are presented at the end of this paper, demonstrating the effectiveness of the proposed control protocol.  相似文献