跳远助跑不同完整程度练习方法的运动学研究

本文通过录像解析的研究方法，对跳远全程助跑、全程助跑起跳与完整跳远进行运动学比较。结果表明：全程助跑不起跳练习手段因与完整跳远助跑技术动作存在较大的运动学差异，且割裂了助跑与起跳结合这一跳远的核心关键技术部分，所以不应采用该手段作跑练习的方法；全程助跑起跳练习手段与完整跳远的相应技术部分的运动学数据相近，且专项强度更高，所以可作专项练习手段。     

功能动作模式下短跑训练实证研究

功能动作训练用于短跑中,在于优化短跑运动员的技术动作,预防运动损伤,提高核心力量和核心稳定性。文章运用文献资料法、实验法、数理统计法等研究方法,对西北师范大学体育教育专业田径专选组学生短跑技术进行了研究。结果表明：（1）经过为期三个月的教学实验,实验组和对照组的步幅、步频、100米成绩与实验前相比都有明显的提高（p<0.05）。且实验组高于对照组。（2）功能动作训练能有效的提高短跑运动员的核心力量和核心稳定性。     

变形胶片的恢复研究

本研究以变形的醋酸胶片为研究对象,分析不同种类胶片经过不同处理后,片基长度发生变化的情况,探寻胶片长度的变化规律,同时观察经各种处理后,胶片在自然状态下尺寸稳定性保持能力.实验中以胶片齿孔距变化为胶片长度变化的主要判断依据,同时检测经过不同处理后胶片密度的变化.     

浅谈提高烟支长度偏差控制精度、降低烟丝消耗的方法

介绍了卷烟机在生产卷烟过程中,烟支长度偏差产生的原因,通过分析、计算、改进和试验找到解决办法,使烟支长度保持在下偏差范围,可以降低卷烟消耗,为卷烟企业创造可观的经济效益。     

一般位置直线段实长及倾角讲解方法的探讨

从观察日常生活中诸多部件或零件开始,引出一般位置直线实长及其对投影面倾角求解的必要性,给出由投影求出一般位置直线的实长及其对投影面倾角及直线与投影轴夹角的方法,总结实长、倾角和夹角的求解规律。而后通过几个典型习题的作图过程分析,加深学生对定理的理解。几轮讲述表明：采用该种形式学生不仅能够快速掌握直角三角形法,而且也能激发学生学习工程制图的兴趣。     

论提升现代文化引领力的途径

现代文化的引领力在新疆跨越式发展和长治久安战略实施中的重要作用越来越突出。提升现代文化的引领力,必须坚持不断提高现代文化政治上的先进性、思想上的引领性、感情上的认同性、运行机制上的高效性和创新发展的同步性,不断丰富现代文化引领力的内涵,确保现代文化在新疆跨越式发展和长治久安战略实施中不断发挥重要的引领作用。     

Porto street stage at Rally Portugal: the determinants of the length of stay

ABSTRACT

We present the determinants of the length of stay (LOS) of Porto Street Stage that integrated the program of the 52nd edition of Rally de Portugal. Sport events assume an important role in the marketing of tourism destinations. However, when we compare them with other segments in tourism, it still remains underexplored. This study represents an opportunity to contribute to the literature, and it could become a significant toll for the organizers, public entities and other stakeholders. We contemplate a set of information and data that may improve the management of the future editions in a more rigorous and effective way. As we are dealing with an international event, it is an occasion to enlist tourists and promote the tourist destination. We applied a quantitative analysis and considered the sociodemographic characteristics of the spectators, factors that influenced the trip, expenses per day in the city, level of satisfaction with the event, and the intention to return. An OLS regression model, a Weibull survival model and a zero-truncated negative binomial regression model were estimated, and the results were compared. On the LOS determinants it is not common to consider the influence of each item of expenditure during the stay and the satisfaction levels with the event and different effects were observed. The travel and accommodation expenditures present a negative effect on the LOS. In the opposite side the satisfaction level and intention to return, both present a positive effect on the LOS. The sociodemographic characteristics have diverse impacts on the LOS.     

以写促学,提高大学英语教学质量

通过对第二语言写作教学的三个教学流派:成果教学法、过程教学法和体裁教学法的分析,本文提出大学英语的写作教学有其自身的特点,写作教学应该兼收并蓄,以调动学生的积极性为主,教师要了解以上三个教学流派的优点及其缺点,在教学中使用最新的科研成果--写长法,以达到更好的教学效果.     

A new method for recording the temporal pattern of stride during treadmill running

The aim of this study was to investigate the reliability of a new infrared light based method (IR₄₀) for recording temporal stride patterns during treadmill running. The IR₄₀ device, emitting a tight web of 40 infrared light beams 10 mm above the treadmill running surface, was compared to a previously validated electro-pneumatic contact shoe (CS) method while nine well-trained athletes ran at 2.8, 3.3, 3.9, 4.4, 5.0, and 5.6 m s⁻¹. Disconnection and reconnection of the IR beams marked the stance phase. The sampling rate was 500 Hz for both methods. The stance phase duration was on average 11.5 (±8.4) ms longer with the IR₄₀ than with the CS depending on earlier touch down (8.3 ± 6.2 ms) and delayed toe off (3.2 ± 5.3 ms) registrations. Significantly different stance phases were recorded between all velocities and for both methods. Thus, despite the fact that the IR₄₀ systematically measured a somewhat longer stance phase duration than CS, the IR₄₀ is nonetheless useful for temporal stride analysis during treadmill running.     

英语"写长法"述评

王初明教授根据中国外语学习的环境和学生在特定阶段的英语水平,首创英语"写长法".该方法主张以写促学,通过写长克服学习心理障碍,释放学习潜力,从而提高英语水平.这种赏识激励性的外语教学法大大地激发了学生的学习情感,增强了他们的学习成就感和自信心,符合我国外语教育发展的需要.