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.     

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。     

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.     

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。     

技能信息反馈在射箭训练中的应用

对射箭运动训练中信息反馈方法的作用原理,及其具体应用等方面进行论述,对射箭训练中信息反馈的特点,以及如何增强反馈效果的具体途径和方法等方面进行了探讨,认为给不同层次水平的运动员提供正确的反馈信息对于他们掌握技术动作、及时调控训练过程、提高运动成绩都具有重要的意义。     

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.     

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...     

铅球飞行参数即时反馈系统的研制

"铅球飞行参数即时反馈系统"利用减影技术,用两个CCD窄缝像机,对铅球飞行轨迹上的两个点的高度与时间实现了实时检测。在给定出手高度的条件下,计算机分别计算出铅球的出手角度、出手速度、最佳出手角度等飞行参数,然后提供一个角度大于或偏于最佳出手角的反馈信息。下一次投掷时,系统能够根据上一次投掷的情况给运动员提供一个建议,即出手角度应该高一点或低一点。实验研究表明,该系统能够做到实时检测、实时反馈,是一台运动员技术训练的理想辅助器材,该设备尤其适合于具有较高水平的铅球运动员。     

反馈与体育教学

在体育教学中师生间的反馈是不可缺少的,只有在良好的信息反馈状态下才能使教师的教学质量,学生的学习效呆得到最科学全面的体现。