力量功能训练常见方法简析

本文通过综述几种常见的力量功能训练方法,为提高运动训练成绩和大众体质健康健身服务。近年来,力量训练方法越来越多,有速度力量和耐力力量训练。常见的力量训练功能训练有振动训练、PNF训练、悬吊训练、超等长训练、本体感觉与核心训练。力量训练通常与速度、敏捷、耐力和反应训练密切相关,适时加强与力量有关的素质练习尤为重要,只有这样才能提高力量训练的效果,保持运动成绩,以力量为基础的功能训练衍生出来多种训练方法,本文对这些方法梳理和总结,为后人研究学习提供方便。     

六安市第三产业内部结构和竞争力分析

利用2004—2007年六安第三产业统计数据与钱纳里标准比较,表明六安第三产业还存在一定差距,选取具有代表性部门——运输邮电仓储、批发零售、餐饮住宿、金融、房地产、旅游等——作为研究对象,采用偏离份额分析法,详细分析了六安第三产业的内部各部门结构和竞争力。分析得出结论,六安第三产业部门中,只有房地产增长速度和竞争力较强,而金融业发展速度慢,无竞争力,其他部门发展速度较慢,有一定的竞争优势。     

GK型等强度钢筋锥螺纹接头技术在工程中的应用

本文通过工程实例, 介绍了等强度钢筋锥螺纹接头的施工工艺及其使用所取得的效果.     

Out of Sight, (Not Yet) Out of Mind: The Impact of Tie Strength on Direct Interaction and Social Surveillance Among Geographically Close and Long-Distance Facebook Friends

Social networking sites are considered a valuable resource to maintain existing friendships even over considerable distances. The present study emphasizes tie strength as a crucial determinant for the use of interactive and passive features among 302 active Facebook users and friends of different relational closeness (close friends vs. casual friends vs. acquaintances) as well as a moderator for the impact of physical distance. As expected, tie strength affected direct interaction linearly, whereas social surveillance followed a quadratic trend. Furthermore, moderation analyses revealed less frequent direct interaction between close friends and stronger surveillance of casual friends’ profiles as physical distance increases. These results indicate different functions in relationship maintenance for both behaviors as direct interaction aims at nurturing current relationships, while surveillance serves as a catalyst for promising future communications. As a consequence, physical distance influences direct interaction adversely due to emerging constraints but also contains informational value encouraging information-seeking behaviors.     

循环抗阻训练对女大学生肌力及有氧耐力影响研究*

目的：探讨循环抗阻训练对非体育专业女大学生等动肌力以及有氧工作能力的影响。方法：以在校非体育专项23名女大学生为研究对象,随机分为实验组和对照组,实验组进行8周循环抗阻训练,对照组不训练。训练前后,利用IsoMed2000等动肌力测试系统测试肩关节、腰腹、膝关节等部位等速肌力;利用CORTEX MetaMax-3B运动心肺功能测试仪测试最大摄氧量的变化。结果：1.通过8周循环抗阻训练,女大学生左右膝关节屈伸肌群等动肌力均显著高于训练前,腰腹伸肌群等动肌力极显著高于训练前,左右肩关节屈肌群等动肌力极显著高于训练前,右肩关节伸肌群等动肌力极显著高于训练前;2.通过8周循环抗阻训练,女大学生最大摄氧量绝对值、相对值以及最大摄氧量出现时间均极显著高于训练前。结论：通过8周循环抗阻训练,能提升女大学生有氧耐力,增加女大学生膝关节屈伸肌群、躯干伸肌群、左右肩关节屈肌群峰以及右肩关节伸肌群的力量。但躯干屈肌群和左肩关节伸肌群作用不明显,今后应用该套循环抗阻训练方案,应增加躯干伸肌群和左肩关节伸肌群锻炼动作。     

基于论文产出视角的高校图书馆科研实力研究——以“985工程”高校为例

以“985工程”院校图书馆为研究对象,对其十年间发表论文总数、论文被引率、篇均被引频次、高频被引论文数量、核心期刊论文数、图书馆h指数等论文产出指标进行统计研究,并进行因子分析和聚类分析。结果表明：各高校图书馆综合科研实力参差不齐;不同类型高校图书馆论文在数量和质量方面均存在巨大差距;不同地区间和同一地区内高校图书馆科研实力水平不均衡。     

关于直角角焊缝强度计算基本公式的探讨

主要针对现存的直角角焊缝强度计算基本公式推导中存在以特殊情况代替普通情况进行公式推导的问题,推导出新的适用性更广的公式,以供同仁参考。     

Actors and act-ers: Enhancing inclusion and diversity in teaching and teacher education through the validation of quiet teaching

We find that Teacher Education attracts, in addition to those outgoing students who are at ease in front of a group of people, a number of student teachers who are often quiet, reserved, shy, or not at all comfortable being the center of attention. Many times these aspiring teachers have gifts and talents that are not readily apparent, yet comparable to their more outgoing peers. Often, they are caring, passionate, and reflective.     

Acute intraocular pressure changes during isometric exercise and recovery: The influence of exercise type and intensity,and participant´s sex

ABSTRACT

We assessed the intraocular pressure (IOP) behaviour during a 1-minute period of isometric physical effort and the immediate 1-minute of recovery in the mid-thigh clean pull and squat exercises at three different intensities. Twenty physically active individuals performed the isometric mid-thigh clean pull and squat exercises at three intensities (0% [low-intensity], 25% [medium-intensity] and 50% [high-intensity] of the maximum isometric force). IOP was semi-continuously measured by rebound tonometry. There was a statistically significant effect of exercise intensity on IOP (p < 0.001, ?_p² = 0.416), observing that IOP increments were positively associated with exercise intensity. The mid-thigh clean pull and squat exercises did not demonstrate differences (p = 0.510), and also, no differences were observed between men and women (p = 0.683). The IOP changes during the isometric physical effort showed a positive linear behaviour in all conditions (r = 0.70 to 0.96). IOP returned to baseline levels after 8 seconds of recovery. Our data showed a progressive and instantaneous IOP increment during isometric exercise, which was positively associated with exercise intensity. IOP changes were independent on the type of exercise and participant´s sex. After exercise, IOP rapidly (≈ 8 seconds) returned to baseline levels.