航海类专业学生补考时间选择对补考通过率影响的相关研究

通过对某航海院校不同学期相同补考科目学生121人,不同补考时间对补考通过率影响进行分析,得出于开学后三周内完成补考学生的通过率低于假期补考学生。最终确定补考时间的选择可以影响补考通过率,于开学后三周内完成补考学生的通过率较低。建议将补考时间规定为假期结束前l周。     

浅议日语中的隐性时间性名词

众所周知,名词具有空间性,动词具有时间性,这种特性在人类的语言里都是共通的。不过,一部分名词也具有时间性。比如,＂明日·6時·今月＂等就具有明显的时间性,这很容易得以判断。与此相对＂,事故·食事·宴会＂等名词又是否具有时间性呢？它在具体运用的时候又具有何种特性呢？本文旨在通过语义及其表达形式对其进行简要分析。     

基于ARIMA模型的体育彩票销量预测——以上海为例

对未来体彩销量预测分析,可以为体彩产品设计、营销推广提供科学依据。本文以上海为例,采用ARIMA模型对2009年1月-2013年3月的上海体育彩票的月度销售数据进行时间序列分析,并预测出2013-2015三年上海体育彩票的销量,从而对上海体育彩票的销量增长趋势进行分析。     

第19届世界杯足球赛失球数与时段的分析研究

运用文献资料法、录像观察法、数理统计法、逻辑分析法,对第19届世界杯决赛阶段32支球队的失球数与时段失球规律和攻防技战术进行分析与研究,以求更好地把握世界足球运动的发展趋势,为今后我国球队的科学训练、足球理论教学和实践的发展提供参考。     

System Analysis for Oxygen Uptake Kinetics with Step and Pseudorandom Binary Sequence Exercise in Endurance Athletes

We examined whether the system analysis for step and pseudorandom binary sequence (PRBS) exercises could be useful to characterize oxygen uptake (VO₂) kinetics of female sedentary subjects and endurance athletes. Breath-by-breath VO₂ was determined during step- and PRBS-cycle ergometer exercises. The time course of the VO₂ kinetics was evaluated by the time constant of the second phase, which should reflect the adjustment of the oxidative metabolism at the skeletal muscle level. The VO₂ kinetics were significantly faster in long-distance runners than in sedentary subjects for both exercises. A significant relationship was observed in the VO₂ kinetics obtained from step and PRBS exercises. In each group, there was no significant difference in the VO₂ kinetics for step and PRBS exercises. These results indicated that the system analysis with PRBS exercises revealed the faster VO₂ kinetics in endurance athletes than in sedentary subjects.     

The effect of periodized resistance training on accelerative sprint performance

The purpose of this study was to assess the effect of periodized resistance training on accelerative sprint performance. Sixteen physically active men participated in a randomized controlled study. An experimental group (n = 10) completed an 8-week periodized resistance training intervention, while a control group (n = 6) did not train. Pre- and post-training measures of 20-m straight-line sprint time, including a 10-m split, maximum strength, and explosive strength, were recorded. Flight time, stance time, stride length, and stride frequency were quantified from digitized video recordings of the first three strides of the 20-m sprint. Resistance training resulted in significant increases in maximum strength (parallel back squat: 19%) and explosive strength (6–10%). However, both groups increased 0–10 m sprint times (experimental group = 6%; control group = 3%) while 10–20 m times were reduced (experimental group = 7%; control group = 4%), highlighting the mechanical differences between the distinct sprint phases. The change during the 0–10 m interval was accompanied by a reduction in stride frequency during the first three strides. Strength coaches should be aware that the potential benefits of increased muscular strength during short sprints are likely to be affected by mechanical specificity and that improvements in sprinting performance may not occur immediately after a period of resistance training.     

Characteristics of the start in women's World Cup skeleton

This study characterizes key elements of the start in elite female World Cup skeleton athletes. The top 20 female competitors in three World Cup races were videotaped within a calibrated space to allow the following components of the start to be quantified: (1) acceleration (velocity at 15-m mark, time to 15-m mark), (2) capacity (time to load, total number of steps to load), and (3) load (velocity at 45-m mark). A correlation analysis was used to establish the relationship between the variables of interest and overall start time (15- to 65-m mark). Velocity at the 15-m mark accounted for 86% of the variance in overall start time at St. Moritz and 85% at Sigulda. A stepwise regression analysis revealed that approximately 89% of the variation in start time could be explained by velocity at the 15-m mark, time to load, and velocity at the 45-m mark. Of the variables analysed in this study, rapid acceleration to attain a high velocity at the 15-m mark was the most important component of a fast overall start time. The importance of the time to load and velocity at the 45-m mark vary according to the different track characteristics.     

中国边境省区入境旅游发展的时间同步性与区域响应

依据1980—2011年中国边境9省区入境旅游客流量和旅游收入数据,分析其入境旅游发展的时间同步性与区域响应,结果表明:中国边境省区入境旅游可分为1980—1991年的缓慢增长期、1992—2003年的快速增长期和2004—2011年的加速增长期3个发展阶段;边境9省区入境旅游的增长变化、波动周期大致相同,但相关系数较低;各边境省区入境旅游发展还存在着较大的差异。依据基准年数值划分边境各省区各阶段入境旅游发展的起点,依据平均增速划分边境各省区各阶段入境旅游的发展速度,可动态地刻画不同省区不同阶段入境旅游的发展态势,揭示各省区入境旅游发展的区域响应,并为各省区入境旅游发展的动态比较研究和旅游发展规划制定提供参考依据。     

远程教育与优秀传统文化的资源开发与价值体现

信息时代快速发展，如何传承优秀，的传统文化成为事关中华民族现代发展的挑战与机遇。远程教育提供了极好的技术支撑与传播方式。将传统文化开发为优质教育资源，发挥远程教育的教学平台与传播作用，把这种资源用于全民教育之中，让更多的人了解与欣赏优秀传统文化，自觉进行保护和继承，将是一件重大而有意义的事情，也是教育技术工作者面临的挑战与历史责任。     

时间的囚笼--从文本的时间因素谈《等待戈多》的主题

本从时间入手探讨了荒诞派戏剧《等待戈多》的深刻寓意。时间在该剧中既推动着剧情的发展，也反映着“二战”后由于终极价值的解体而弥漫西方世界的失落感和迷茫感。它的存在形式揭示了人生的无意义。为了继续活下去，人们不得不选择遗忘，而遗忘的尽头却是精神的死亡。这部剧寓言式地刻画了处于物质的死亡和精神的死亡夹缝之间的西方现代人的生存痛苦，在遗忘的荒野上呼唤着思想的回归和生命意义的重建。