培养学生的英语语言能力提高学生的英语素质

讨论了英语语言能力:听,说,读,写的有机结合,培养学生的英语综合能力,提高学生的英语素质.     

西部地区农业信贷投入的经济效应研究

利用面板模型对西部地区1978—2009年农业信贷投入的经济效应进行实证分析,结果表明:农业信贷投入促进农业产出增长的作用比较明显,而在提高农村居民收入增长方面则显得比较乏力;农业信贷资金的产出弹性逐渐得到改善,农业产出对信贷投入的响应更趋积极;农业产出和农村居民收入对农业信贷利率的变化不敏感,农村金融市场上信贷配给的现象依然普遍;农业信贷投入的经济效应存在省际差异。因此,应完善农业信贷的征信机制,增加农业信贷资金的有效供给并调整投入结构,调整西部地区农业生产结构,改善农民收入结构,以增强农业信贷投入的经济效应。     

Effects of oncoming target velocities on rapid force production and accuracy of force production intensity and timing

The present study aimed to clarify the effects of oncoming target velocities on the ability of rapid force production and accuracy and variability of simultaneous control of both force production intensity and timing. Twenty male participants (age: 21.0 ± 1.4 years) performed rapid gripping with a handgrip dynamometer to coincide with the arrival of an oncoming target by using a horizontal electronic trackway. The oncoming target velocities were 4, 8, and 12 m · s^?1, which were randomly produced. The grip force required was 30% of the maximal voluntary contraction. Although the peak force (Pf) and rate of force development (RFD) increased with increasing target velocity, the value of the RFD to Pf ratio was constant across the 3 target velocities. The accuracy of both force production intensity and timing decreased at higher target velocities. Moreover, the intrapersonal variability in temporal parameters was lower in the fast target velocity condition, but constant variability in 3 target velocities was observed in force intensity parameters. These results suggest that oncoming target velocity does not intrinsically affect the ability for rapid force production. However, the oncoming target velocity affects accuracy and variability of force production intensity and timing during rapid force production.     

经济全球化与我国体育科技产业海外发展研究

国际政治与经济发展的种种变革促成了今天经济的全球化发展态势,在高度发达的互联网技术以及文化多元化的国际文化价值观的双重影响下,经济全球化已从一种“趋势”发展成为了今天的显示,这种新态势迫使各国都在开发市场的同时,努力输出自己的产业,提升自身在全球化中的影响力.我国体育科技发展水平在举国体制的支撑下迅速发展,如同我国竞技体育水平一样,在很多方面处于国际领先地位.以人才和软科学输出为先导,带动实体产品的输出,同时,加强国内和国际市场的统一开发与把握,是我国体育科技产业海外发展的可行之路.     

择时营养补充方法在优秀自行车运动员营养调控中的应用

目的:为了研究择时营养补充对自行车运动员运动能力的影响和择时营养补充方法在自行车运动员营养调控中的应用,为运动时间营养学理论提供实验依据.方法:对8名优秀自行车运动员在珠海和深圳训练周期内的营养调控进行研究,测试部分血生化指标和心肺功能以及运动现场测试运动能力.结果:本实验发现,运动员在训练期间进行择时营养补充,男子血清总睾水平增加了9.22%(P＜0.05);血清CK水平下降40.61%(P＜0,05);动态追踪Hb、血糖和血胰岛素水平的变化,在训练周期内,Hb呈下降趋势,但仍能维持在较高水平,训练前后比较下降了9.74%(P＜0.05),而血糖浓度和胰岛素水平的波动均在正常范围.结论:以择时营养补充方法应用于优秀自行车运动员训练期间的营养调控,并遵循"择时补充、联合补充、个体化补充和交替刺激"的原则,可提高运动员体能和促进体能恢复,对调节内分泌功能、促进运动后骨骼肌机能的快速恢复有积极作用.     

A mathematical model for power output in rowing on an ergometer

A mathematical model relating power output of rower to stroke rate on an ergometer (the Concept II Indoor Rower TM, Model C) is studied. The model is used to analyse the ergometer performance of a particular rower. It is determined that he can be more efficient (i.e. decrease power output while maintaining fixed velocity) by decreasing stroke rate, but at the expense of increasing force during the drive. It is also shown that he can be more efficient by increasing the drag factor (using higher vent setting) without increasing force. Dependence of power output on rowing style (the shape of the force curve) is also examined. It is shown that variation of force during the drive has little effect on efficiency, but efficiency is reduced by asymmetry of the force curve that favours the legs.     

我国优秀游泳运动员出发技术辅助训练的研究

为改进我国优秀游泳运动员的出发技术,采用观测和实验方法,通过拍摄运动员陆上和水下出发技术录像以及出发计时,对出发技术进行运动生物力学诊断和分析。在此基础上,根据运动员自身特点和不同泳姿提出相应的入水启动方式,并研制出发训练辅助器材,对出发预备姿势、腾起角度以及飞行远度和入水角进行控制。实践证明:这是一种快捷、有效的出发技术辅助训练方法。     

关于农产量抽样调查的应用

该文主要阐述了在农产量抽样调查的具体应用中应注意的一些问题，并用实例加以说明。     

高原训练对人体呼吸和循环系统的影响

高原训练的生理机制通常被认为是机体对氧不足引起的血氧过少的适应结果。机体对高原的低氧环境很快会建立起一系列复杂的代偿性生理机制,使各系统达到新的平衡,即所谓习服。而这种习服首先对人体呼吸、循环系统产生影响。     

论意义磋商对语言输入与输出的重要意义

意义磋商可以使学习者获得更多的可理解输入，可以推动学习者进行语言输出。教师应努力建立有利于师生之问、生生之问进行意义磋商的课堂互动模式。