我国青少年蹦床运动员训练手段的研究

运用问卷调查、数理统计、逻辑分析等研究方法,对我国潜优势蹦床项目青少年运动员队伍的现状进行分析,探究江苏、福建、上海、广西、广东、山西等八个省份青少年蹦床运动员队伍中存在的问题,在训练的基础上提出优化和改进的建议,以促进我国竞技体育事业的可持续发展。     

掺加降粘剂Sasobit对沥青指标影响的研究

近年来改性沥青在道路工程的大量使用,满足了工作性要求,却在施工过程中产生了大量烟尘等废弃物。而降低拌和温度是较好的办法,于是出现了温拌技术。该文以新疆克拉玛依90#A级沥青为研究对象结合温拌技术,研究掺加不同剂量的Sasobit对沥青的四种组分的影响及由此引起的变化,以确定Sasobit的合理掺量。     

如何学好アクセント——介绍几种掌握日语アクセント的规律

长春长春白　晶长春如何学好アクセント——介绍几种掌握日语アクセント的规律@白晶$长春大学外国语学院!长春130022     

Effects of Electrochemical Treatment on the Superficial Properties of Rayon-based Carbon Fibers

The development of surface acidity on rayon-based carbon fibers during mild electrochemical treatment was investigated. Conductimetric titration was the primary method used to investigate the functionalities on the carbon fiber surface. The acidity on the surface of the untreated carbon fiber was very low, while for the treated fibers, the acidity increased significantly. Moreover, with the treatment extent proceeded, the acidity on the fiber surface also increased. SEM analysis shows electrochemical treatment under intense treatment degree caused considerable etch on the fiber surface. Cavities and grooves can be observed on the surface via the SEM microphotograph. While in a more mild treatment, electrochemical treatment didn't cause great etch on the surface of the fiber.     

The Relationship between the Mechanical Properties of Pure Silk Fabrics and Dress Performance

In this paper, the relationship between mechanical properties of 30 pieces of pure silk fabrics and the dress performance has been analyzed. With the methods of multifactor linear step regression and discrimination analysis, the judgment and prediction model of the performance have been established.     

动力吸振器用于抑制加肋薄板振动和声辐射的研究

本文以加肋薄板作为计算和实验的模型,从理论和实验上证明了动力吸振器对加肋薄板振动和声辐射抑制的有效性,给出了动力吸振器参数最优设计的图表。设计的悬臂梁吸振器具有较显著的抑振和降噪效果。最后对真实飞机壁板上安装动力吸振器进行了实验研究,得到了满意的降噪效果。     

可逆变流器的OPWM控制

提出一种适用于单片机实现的可逆变流器谐波优化控制方法 .它使变流器可以工作于较低的载波频率而具有近于零的低次谐波 ,因而特别适用于 GTO大功率变流器 .论述了优化开关角的求解方法 ,分析了优化开关角的特点 .仿真结果表明了优化开关角解的正确性     

高校董事会发展的切入点选择

高校董事会发展的切入点选择应遵循四个“有利于”原则，即有利于学校教学科研水平的提高和师资队伍建设；有利于优化学校的结构和布局，使人、财、物资源得到合理配置和利用；有利于各方的发展和增加新的活力；有利于更好地为地方区域经济和社会发展服务，以适应２１世纪经济与社会对高等教育的需要。提出从协作、联合、声誉效应、资金四个方面确定切入点选择方案     

Study On Pattern Design of Men''''s Tailored-suit Sleeve

Sleeve pattern design of men' s tailored - suit is one of the most difficult problems of clothing pattern design. Based on the experimental studies of armhole girth, the difference of armhole width and crown height, crown angle, under sleeve curve's diagonal line length, crown ease and its distribution rule, this paper mainly deals with the sleeve pattern design of tailored - suit for Chinese men. The influences of these factors are discussed and furthermore, some qualitative, quantifiable conclusions are drawn to design perfect pattern of men' s tailored - suit sleeve. 