氪-85气体密封源丢失后的风险评估

气体密封源丢失后,在气体不泄露及气体泄露情况下,对公众产生照射的方式不同,因而存在的风险不同.本文对极端情况下达到事故受照剂量所需时间建立了估算模式,并以时间为因子,对丢失放射源的风险评估进行了探讨.     

我国高校教师评价体系变迁对体育教师的影响

着重分析、讨论了高校教师评价体系的变迁对高校体育教师的影响,包括对高校体育教师学历、职称的影响和学术、科研的影响。同时对近几年来高校正在实施的教师绩效评价体系中存在的问题作了一定的分析,并提出相应的对策建议:扩大体育教师绩效评价的内涵;建立个别化的教师督导与评价体系。     

中国散打队多哈亚运会赛前身体机能监测与评定研究

采用实验、心理测试等研究方法,对中国散打队在多哈亚运会赛前不同训练阶段的身体机能进行评定。结果表明,在赛前集训的不同阶段,散打运动员的血红蛋白、红细胞计数、红细胞压积、血尿素、血清肌酸激酶、血睾酮、皮质醇、免疫细胞等生化指标的变化,与其身体机能状况及疲劳程度密切相关。提示可通过这些指标在不同训练阶段的变化特征用来评定散打运动员的身体机能。     

体育教学评价中几对范畴的思考

运用哲学辩证统一的思维,探索体育教学评价中科学、正确的评价观.认为:体育教学评价中存在评价者与被评价者、联系与孤立、静态与动态、主观与客观、精确与模糊、片面与全面、个别与全体、知识与能力等诸对范畴;把握这几对范畴,可促进人们对体育教学评价的内涵、目的和方法的正确理解..     

基于大学生个体进步幅度的体育考核与评价方法的研究

随着高等学校体育课程改革的不断深入和发展,单一的、传统的、教条的体育课程考核评价体系正逐渐被全面的、新兴的、发展性的动态体育课程考核评价体系所替代。文章基于新的课程考核与评价体系,坚持以人为本的原则,着重以大学生的个体进步幅度作为高校体育考核与评价的主要方法,全面深化体育教学俱乐部的改革,为逐步完善高校体育课程建设,推动高校体育课程深化改革和发展提供现实参考。     

体育课教学效果评估方法探研

本文就体育课教学的评价意义功能原则结构方法标准等问题进行探研,以重新认识教学评价的内涵、作用与简便方法以促进课堂教学效能的进一步提高。     

Development and reliability of the KIM cycling scale – a measurement tool for the development process to cycling independently

ABSTRACT

Background: Cycling has gained more attention as an important lifelong physical activity. Learning to cycle independently without assistance is a milestone for most children that requires time and practice to master. Cycling was recently added to the motor development model and so a valid and reliable measure of cycling ability is required to allow accurate assessment of the skill. Cycling has many health benefits along with being a commonly reported physical activity globally and therefore is an important skill to promote in early childhood and throughout life. To date, there are no measurement tools examining the developmental process to independent cycling in the early childhood years. The current study aimed to develop and assess the inter-rater and test-retest reliability of the ‘KIM Cycling Scale’.

Methods: Development of the scale occurred in four phases: (1) development of criteria and stages, which used observation of children when learning to cycle and expert panels to develop the initial developmental stages, (2) review of instructions and criteria and pilot inter-rater and test-retest reliability, to ensure that the scale could be used as a standalone scale without requiring further instructions (3) cycling intervention, which allowed assessment of the developmental nature of children along the scale as they learn to cycle independently and to assess typical and alternate routes to independent cycling and (4) inter-rater and test-retest reliability.

Results: Ninety children took part in phase 1, thirty-six children took part in phase 2, seventy-four children took part in phase 3 and one hundred and forty-nine children took part in phase 4. All three hundred and forty-nine children were between 2 and 6 years. The developed scale included eight stages in total. The scale was found to have excellent inter-rater reliability (ICC?=?0.97, 95% CI?=?0.96–0.98) and good to excellent test-retest reliability [(ICC?=?0.91, 95% CI?=?0.87–0.94) & (ICC?=?0.90, 95% CI?=?0.85–0.93)]. Typical routes to independent cycling along the scale were examined and reported as being step-wise on all occasions except one where a two stage jump was as common as the step-wise route. Alternate routes were also reported.

Conclusion: The current study developed a reliable measurement tool for assessing children between 2 and 6 years of age on the developmental process to independent cycling. Having a cycling scale will allow teachers and practitioners to assess competence in cycling and moreover, track changes in skill development. Furthermore, parents could also use the scale to better understand and better asses their child’s progression when learning to cycle.     

基于风险理论的体育教学过程管理引论

运用文献资料、逻辑归纳等方法,通过对风险管理理论的分析,阐述体育教学中的风险存在,探讨风险管理的关键过程——风险识别、风险评估、风险应对.为积极进行体育教学伤害事故预防、促进体育教学的有效实施提供参考.     

集装箱桥吊前大梁主铰冲击特征分析技术的研究

应用小波包分析技术,结合Hilbert包络技术,提出了小波包能量包络技术.该技术能够很好地表征桥吊在工作时产生的振动冲击等非平稳信号的状态特征,为桥吊的状态监测和安全评估提供了一种抗噪能力强、特征表述灵敏的特征抽取技术,并在已开发的状态监测和评估系统中得到了实践,取得了很好的应用.