SP口头反馈对医学生OSCE成绩影响初探

方法:将考生随机分为两组,实验组先进入有SP反馈的长站,再进入没有SP反馈的短站;时照组先进没有SP反馈的短站,后进入有SP反馈的长站.同时使用问卷调查学生对SP反馈的正确性和帮助大小的看法.结果:对照组和实验组的SP短站成绩差异无显著性,第一SP长站和第二SP长站间的成绩差异有显著性.问卷调查结果显示,90%的学生积极评价SP反馈.结论:SP反馈有助于提高相同结构和相同任务站点的成绩,但对于不同结构不同任务站点的成绩影响还需要进行更严格的设计的研究.     

国家重点实验室网络影响力评价及实证研究

为衡量国家重点实验室在新时代背景下的网络媒体影响力,构建网络媒体影响力评价体系,以此分析国家重点实验室的网络媒体影响力水平。利用层次分析法构建国家重点实验室网络媒体影响力评价指标体系,并计算相应的权重系数,同时选取156所国家重点实验室进行实证研究。研究显示,国家重点实验室间的网络媒体影响力参差不齐,且大多数与第三方平台影响力水平同步;国家重点实验室在自主平台特别是微信和官网的利用上还有很大的提升空间。并据此建议积极与多类社交媒体建立联系、强化微信公众号的内容建设以及加强对官方网站的建设与维护等建议。     

黄土高原社会-生态系统变化及其可持续性

在全球变化和人类活动驱动下,社会系统与生态系统均处在不断加剧的动态变化中,揭示二者之间的互馈机制是保持和增强系统弹性以及可持续性的科学基础。黄土高原地区是中国人口、资源、环境矛盾最集中的区域之一,也是黄河重要的产水区和绝大部分泥沙的来源区。合理布局黄土高原土地利用格局,协调黄土高原水土保持和黄河下游水资源利用与泥沙控制,是黄土高原地区和黄河流域可持续发展的重大需求。本文立足于国际社会-生态系统耦合研究前沿和可持续发展与生态建设的国家需求,综述了区域社会系统与生态系统的互馈机制和社会-生态系统的耦合模拟的研究进展,总结了黄土高原社会-生态系统的变化过程和驱动机制,认为发展社会-生态系统动态机制分析方法和稳态转换识别方法,建立耦合社会系统与生态系统的土地利用权衡与优化模型,是推动社会-生态系统耦合研究理论与方法创新、为黄土高原的可持续发展提供科学依据的重要途径。     

在线教学效果评价及质量保障体系建设

2020年疫情背景下教育部停课不停学的方案以多元化在线教学的形式实施.大规模在线教学同时启动对我国在线教学质量保障提出新的挑战,如何保障效果并持续提高在线教学质量成为社会关注的焦点问题.基于在线教学实施效果及质量保障策略的分析,参照《欧洲在线教学质量评价标准框架》,为保障在线教学效果提出以下建议:国家建立在线教学质量标...     

基于语义矩阵的图像检索相关反馈技术

针对基于语义网络的图像检索中的过反馈问题,本文提出了将语义网络转换为语义矩阵,采用基于多用户相关反馈的投票机制,可有效地克服过反馈.在此基础上提出了一种新颖的新图添加策略和处理语义向量查询的有效方法,最后指出了还需进一步研究的问题.     

Evaluating effects of atmospheric CO2 on stability of global climate: a cell-to-cell mapping approach

Atmospheric carbon dioxide concentration [CO2], incoming solar radiation and sea ice coverage are among the most important factors that control the global climate. By applying the simple cell-to-cell mapping technique to a simplified atmosphere-ocean-sea ice feedback climate model, effects of these factors on the stability of the climatic system are studied. The current climatic system is found to be stable but highly nonlinear. The resiliency of stability increases with [CO2] to a summit when [CO2] reaches 290 μL/L which is comparable to the pre-industrial level, suggesting carbon dioxide is essential to the stability of the global climate. With [CO2] rising further, the global climate stability decreases, the mean ocean temperature goes up and the sea ice coverage shrinks in the polar region. When the incoming solar radiation is intensified, the ice coverage gradually diminishes, but the mean ocean temperature remains relatively constant. Overall, our analysis suggests that at the current levels of three external factors the stability of global climate is highly resilient. However, there exists a possibility of extreme states of climate, such as a snow-ball earth and an ice-free earth.     

Transforming,storing and consuming athletic experiences: a coach’s narrative of using a video application

The analysis of sport performance in competitive contexts has become synonymous with the use of a range of software applications and hardware e.g. heart rate monitors and gps systems. With the prevalence of technology in mind, a small but growing corpus of literature has begun to consider this phenomenon and its influence upon the coaching process. This study adds to this literature by detailing the autoethnographic experiences of a case study coach; Derek. A contextualised and richly described narrative account of Derek’s experience of using coaching applications is provided. Analysis of Derek’s narrative suggests that technology can be a useful means by which individuals make sense of their experience. Specifically, (1) technology can be a ‘ready-to-hand’ instrument that enhances the coaching process. Unfortunately, (2) technology may become the only and ‘calculative’ means by which individuals come to understand their performance. In such instances, it is important to note that (3) the videos we use to understand our performance are transformed and incomplete representations of lived athletic experiences. Thus, Derek’s story illustrates how technology can be both an enabler and barrier to athletes who wish to holistically understand their own lived experiences and engage in coach-athlete relationships. The accompanying analysis draws upon concepts from Heideggerian philosophy to add insight into the use of technology within the coaching process. In so doing, the study prompts coaches to critically view their coach-athlete relationships as situated in a wider world which contains, and can be mediated by, technology. In addition, Derek’s story (re)directs researchers and coaching practitioners interested in technology to a useful literature (philosophy of technology) which may further inform their understanding of coach-athlete relationships.     

对足球移动能力训练的思考

运用文献资料法、逻辑分析法和经验总结法,对足球运动员移动能力训练进行研究.指出,移动能力是足球技能的重要组成部分,与球员的比赛表现密切相关.在对移动方式特征和分类进行分析梳理的基础上,针对长期被忽视的发展感知能力和移动效果反馈两方面,提出足球移动能力训练的内容和重点,以及不同训练阶段的训练要点.认为,发展移动能力要符合力学原理、结合专项技术训练,最终实现训练能力向比赛能力的转化.     

大学英语写作中逻辑错误分析及对策

通过对湖南中医药大学非英语专业学生的两篇习作的研究表明：在纠正学生写作中所犯的逻辑错误方面,相比教师反馈,同级反馈效度低。因此,教师在对学生习作进行反馈时,尤其要指出学生逻辑思维方面的漏洞,以提高他们的逻辑思维能力,从而从根本上提高学生的写作应用能力。     

放大反馈在篮球技能教学中的应用

放大反馈是篮球技能教学中的一个重要方法。结果认识反馈、操作认识反馈、感官反馈是放大反馈的分类。放大反馈为篮球技能教学提供指导的最佳时机、频率并提供定性、定量和纠正错误的指导;同时也可以结合计算机技术和录像提供指导。