太极推手技法的哲理诠释

太极推手是太极拳文化重要的组成部分。对太极拳的研究不能遗忘对太极推手的研究。也因此,对太极推手的文化技术研究显得弥足珍贵。通过文献资料的查阅,在研读太极拳古籍文本的基础上,运用哲学思辩的理论和方法,对太极推手技术理论进行归纳分析。研究认为,太极推手技理的哲学意义表现为：沾粘连随求得机得势;引化拿发达以柔克刚;刚柔并济显以巧斗力;舍己从人示和谐向善。文章最后指出,在太极推手技法体系中,各个环节是一个统一的有机体,沾粘连随是基础,引化拿发是表现,刚柔并济是手段,舍己从人是目标。     

《工程制图》教学中手工作图的必要性

文章强调工程制图多媒体CAI教学中,黑板上手工作图的必要性及如何合理安排手工作图.多媒体教学与传统教学各有利弊,只有把二者有机地结合起来,扬长避短,才能有效提高课堂教学效果.     

The Metabolic Cost of Two Ranges of Arm Position Height with and without Hand Weights during Low Impact Aerobic Dance

Abstract

To determine the energy cost of low impact aerobic dance while varying arm movement height and the use of hand weights, 10 adults volunteered to participate in four choreographed trials. All trials consisted of identical leg movements. Arm movements, however, were performed above shoulder level both with and without 0.9-kg hand weights and below shoulder level both with and without 0.9-kg hand weights. Open circuit spirometry was employed throughout the 10-min videotape guided trials, and heart rate was measured by telemetry. Neither the use of hand weights nor the change in arm position height significantly altered the energy cost of low impact aerobic dance. However, heart rate responses were significantly different. Caution should be observed by aerobics instructors and participants as to the use of heart rate as an indicator of intensity for low impact aerobic dance.     

室外冰场环保清雪车的研制

冰雪运动在我国北方很盛行,高校滑冰课是冬季体育课主要课程之一,但传统的人工维护冰场,速度慢、质量差,影响了冰上运动的普及和发展。为了解决人工清雪费时费力、效率低、清扫效果差的问题,课题组进行了室外冰场环保清雪车的研制工作。设计制造了环保电动车,配有螺旋推雪器和皮带扫雪刷并用的扫雪方式。用机械替代人力清雪能节省人力,速度快,效果好,对普及和推广冰上体育运动有实际意义。     

基于实船动力学测试信息的我国优秀女子赛艇运动员技术特征分析

在研制了一种同步检测赛艇运动员手与脚运动生物力学信息的水上实船多源传感信息获取与评价系统的基础上,将该系统长期应用于国家队和部分省队。通过该系统采集国家队两名女子公开级运动员在桨频Sr=32下的实船训练数据,分别从动作结构、桨下支点、手脚配合、左右两边发力对称性等方面对两名运动员的技术特征进行分析,揭示了赛艇运动中的关键技术问题。     

Age-Related Corresponding Relationships of Controlled Force Exertion Measured by a Computer-Generated Sinusoidal and Quasi-Random Display

This study examined age-group corresponding relationships of the controlled force exertion based on sinusoidal and quasi-random waveforms in 175 right-handed male adults aged 20 to 86 years. The subjects were divided into 3 groups based on age-level: 53 young (mean age 24.6, SD?=?3.3 years), 71 middle aged (mean age 44.3, SD?=?8.7 years), and 51 elderly (mean age 69.3, SD?=?6.4 years). The participants matched their submaximal grip strength by the dominant hand to changing demand values displayed as either a sinusoidal or a quasi-random waveform appearing on the display of a personal computer. The quasi-random waveform was changed in π with amplitude and in π/2 with frequency (peak and mean frequency were 0.1 Hz in both waveforms). The participants performed the controlled force exertion test three times with a 1-min interval (one trial was 40 sec) after one practice trial using the dominant hand. The measurement order was randomly assigned. The total of the differences between the demand value and grip exertion value for 25 sec were used as an evaluation parameter. The coefficient of variance was almost the same range in all age groups in both waveforms (CV_SW ?=?30.8–35.6, CV_RW ?=?26.3–37.7), but the elderly group showed the highest value in the quasi-random waveform. Significant correlations were found among the sinusoidal and quasi-random waveforms in the young, middle-aged, and elderly groups, but significant differences were not found in the correlations among each age group. The controlled force exertion evaluation based on the sinusoidal and quasi-random waveform displays has a moderate relationship, and this relationship does not show age-level differences.     

Age and Individual Differences in Controlled Force Exertion Measured by a Computer-Generated Sinusoidal and Quasi-Random Display

This study examined age group and individual differences in controlled force exertion by emulating sinusoidal and quasi-random waveforms in 222 right-handed female adults aged 20 to 86 years. The subjects matched their submaximal grip strength by the dominant hand to changing demand values displayed as either a sinusoidal or a quasi-random waveform appearing on the display of a personal computer. A total of the differences between the demanded value and grip exertion value for 25 seconds was used as an evaluation parameter. The measurements showed a tendency to increase across the age groups in both waveforms. Significant second-order curve regressions were identified, but there was no significant difference in the increase rates of both waveforms. Analysis of variance showed non-significant differences among means of both waveforms in all age groups, and the differences between means in groups of participants over 50 and 20- to 24-year-olds increased in both waveforms. Individual differences were almost the same in both waveforms.     

弱智儿童敲击动作速度的实验研究

对10-14岁(平均年龄12、13岁)的37名不同智商的弱智儿童的敲击动作速度进行了测定.弱智儿童根据智商不同分为二组一组为轻度智力残疾,智商55-75,平均智商61.3;一组为中度智力残疾,智商38-51,平均智商42.8.实验使用一台BQS-80-Ⅱ型敲击仪进行.被试各测定左、右手一分钟的敲击动作速度.结果表明智商较低的一组弱智儿童(平均智商42.8)左、右手的敲击动作速度均明显较之智商较高的一组弱智儿童(平均智商61.3)为慢,前者只相当于正常7岁儿童水平.无论哪一组弱智儿童,右手敲击速度均快于左手速度.这种情况表明,在弱智儿童中,由于智商的差异,也会对简单的动作速度产生影响.     

顶管工程施工质量控制

介绍新浦热电项目取供水顶管工程施工质量的控制方法，阐述了顶管工程施工质量的控制要求，分析了在进行顶管施工过程中，对顶进轴线、管底高程、平面顶进速度、转角、机头纠偏、管道外围压注触变泥浆减阻，以及泥浆置换和地面变形的质量控制措施，计算了机头迎面阻力与机头顶进阻力，并描述了总推力。     

"第三只手"浮出水面

通过对“看不见的手”（市场）和“看得见的手”（政府）进行逻辑和实证的分析，剖析了其中顾在的内在缺陷和不足，并在对传统的市场，政府的二元性分析思维进行批判性思考的基础上，提出了、第三只手”作为对传统的两只手的补充，以弥补它们的缺陷和不足。