论语文阅读自学能力的培养策略     

王静 《安徽职业技术学院学报》2012,(1):74-76

阅读能力的强弱与获取专业知识、提升职业素养以及培养自学能力等方面密切相关,教师应该将阅读自学能力作为高职学生的一种重要能力来培养。无论在教材编排上,还是在教学过程中,要更加注重学生主体作用的发挥和自学能力的形成,阅读教学则提供了一个极好的发挥契机和培养策略。  相似文献   

The differential effects of PNF versus passive stretch conditioning on neuromuscular performance     

《European Journal of Sport Science》2013,13(3):233-241

Abstract

The effects of flexibility conditioning on neuromuscular and sensorimotor performance were assessed near to full knee extension (25°). Eighteen males who were randomly assigned into two groups underwent eight weeks (three-times per week) of flexibility conditioning (hip region/knee flexor musculature; dominant limb) involving either proprioceptive neuromuscular facilitation (PNF) (n=9) or passive stretching (PASS) (n=9). Both modes of flexibility conditioning are popular within contemporary exercise and clinical settings and have demonstrated efficacy in improving range of motion. The contralateral limb and a prior ‘no exercise’ condition were used as controls. The PNF and PASS modes of conditioning improved passive hip flexibility to a similar extent (mean 19.3% vs. baseline, intervention limb, p<0.01) but did not alter knee flexor strength (overall mean 309.6±81 N) or sensorimotor performance (force and positional errors: 2.3±8.2% and 0.48±7.1%). Voluntary and magnetically evoked electromechanical delays (EMD_V and EMD_E, respectively) were increased but to a greater extent following PASS compared to PNF (PASS: 10.8% and 16.9% lengthening of EMD_V and EMD_E, respectively vs. PNF: 3.2% and 6.2%, p<0.01).The attenuated change to electromechanical delay (EMD) performance during PNF conditioning suggests a preserved capability for rapid muscle activation, which is important in the maintenance of dynamic joint stability. That PNF was also equally efficacious in flexibility conditioning would suggest that this mode of flexibility training should be used over passive to help preserve dynamic joint stability capabilities at this extended and vulnerable joint position.  相似文献   

肌酸补充和电刺激对C2C12肌管糖摄入的效应及机制研究     

赵秀峰  徐晓阳  闫旭洁 《北京体育大学学报》2013,36(2):48-54

目的:旨在研究肌酸补充(CS)和电刺激(ES)对C2C12肌管葡萄糖摄取相关通路蛋白含量和基因表达的影响,阐明肌酸对GLUT4调节的相关信号通路,并讨论CS是否对ES具有叠加效应,为肌酸提高耐力水平提供新的理论依据。研究方法:0.5mM和2 mM浓度的肌酸孵育分化5 d的肌管48h,然后电刺激(15V,30ms,3Hz)共分化7d的肌管120 min。结果:ES引起AMPK-α2和GLUT4 mRNA表达及GLUT4蛋白含量显著增加(P<0.05),糖原显著下降(P<0.05)。不同浓度的CS没有引起AMPK-α2 mRNA表达变化,却使得GLUT4 mRNA和蛋白含量显著增加(P<0.05),糖原含量也无显著性增加(P>0.05)。ES+CS组与C组和同浓度CS组相比,明显上调AMPK-α2 mRNA和GLUT4 mRNA表达及GLUT4蛋白含量(P<0.05)。结论:1)15V,30ms,3Hz的刺激参数,ES120min没有引起细胞膜明显损伤,是研究耐力运动对肌肉糖代谢影响的适合参数。2)ES能通过AMPK途径增加肌管糖摄入和糖转运。3)单纯CS对肌管糖含量没影响,肌酸或许是通过AMPK非依赖性通路调节糖摄入。4)CS对ES对糖摄入的调节具有叠加效应。  相似文献   

Pathways from parental stimulation of children’s curiosity to high school science course accomplishments and science career interest and skill     

Adele Eskeles Gottfried  Kathleen Suzanne Johnson Preston  Allen W. Gottfried  Pamella H. Oliver  Danielle E. Delany  Sirena M. Ibrahim 《International Journal of Science Education》2016,38(12):1972-1995

Curiosity is fundamental to scientific inquiry and pursuance. Parents are important in encouraging children’s involvement in science. This longitudinal study examined pathways from parental stimulation of children’s curiosity per se to their science acquisition (SA). A latent variable of SA was indicated by the inter-related variables of high school science course accomplishments, career interest, and skill. A conceptual model investigated parental stimulation of children’s curiosity as related to SA via science intrinsic motivation and science achievement. The Fullerton Longitudinal Study provided data spanning school entry through high school (N?=?118). Parental stimulation of curiosity at age 8 years comprised exposing children to new experiences, promoting curiosity, encouraging asking questions, and taking children to a museum. Intrinsic motivation was measured at ages 9, 10, and 13 years, and achievement at ages 9, 10, and 11 years. Structural equation modelling was used for analyses. Controlling for socio-economic status, parental stimulation of curiosity bore positive and significant relations to science intrinsic motivation and achievement, which in turn related to SA. Gender neither related to stimulation of curiosity nor contributed to the model. Findings highlight the importance of parental stimulation of children’s curiosity in facilitating trajectories into science, and relevance to science education is discussed.  相似文献   

人力资本产权视域中的高校教师激励     

曹辉 《教育发展研究》2012,(6):72-75

提高教师人力资本使用效率,对教师人力资本进行有效的激励是高校人力资源管理的主题。本文从人力资本产权的角度阐述高校实施人力资本激励的必要性,认为高校人力资本激励的重要前提,是明确高校教师人力资本产权的归属。只有明晰教师人力资本产权,使制度安排明确化,才易于形成激励机制,促进高校教师发挥其人力资本的作用,从而提升高校的办学效益,实现教师与学校的双赢格局。  相似文献   

EMS技术在国家举重队奥运攻关与科技服务中的应用研究   总被引：3，自引：0，他引：3  

王保成  王港  靳继成 《北京体育大学学报》2001,24(2):183-185

肌肉电刺激技术 (EMS)是现代力量训练和康复医学的有效手段 ,运用该方法在国家举重队进行了近 10年不间断的力量训练与训练后的肌肉恢复攻关研究 ,并总结了第 2 6届和第 2 7届奥运会备战中运用EMS技术与杠铃训练手段相结合的攻关训练情况 ,研究认为 :1) EMS技术与杠铃训练相结合的组合力量训练方法 ,是提高肌肉最大力量和快速力量的有效手段和方法 ,是高水平举重运动员提高专项力量的新的训练途径。 2 ) EMS肌肉力量训练法可准确有效地提高专项运动关键环节工作肌群的最大力量与快速力量。 3)EMS肌肉力量训练法是肌肉放松、防伤治伤的有效手段之一。 4) EMS肌肉力量训练法 ,是肌肉肌腱拉伤、撕裂后康复训练和专项力量训练中有十分显著效果的训练方法与手段 ,可大大缩短康复过程 ,保证训练进程。  相似文献   

被动运动与电刺激联合作用防治去神经大鼠骨质疏松的研究   总被引：2，自引：1，他引：1  

张兴毅 《成都体育学院学报》2008,34(11)

将大鼠分为假手术组SHAM、造模组,其中造模组又分为坐骨神经切除组(DN)、被动运动组(PM)、电刺激组(ES)、联合干预组(PM+ES).经30天实验后,PM组明显提高成骨活性,ES组有效地改善去神经支配大鼠骨代谢状况,但是PM+ES更加有效改善去神经大鼠骨代谢水平,联合作用保持骨胶原生成和骨组织的动态平衡,有效预防骨质疏松,比单纯一种方法干预效果更佳.  相似文献   

磁线圈感应电场的无量纲化分析和定位     

乔清理  王明时  田心 《天津大学学报(英文版)》2000,6(1)

建立了磁刺激的一般模型 ,以了解和预测磁线圈所产生的感应电场的空间分布 .引入无量纲化分析 ,将影响感应电场强度幅度的因素分成两部分 :c(表示刺激条件 )和 E0 (表示线圈几何特性 ) .通过两种磁线圈电场强度三维分布的仿真 ,确定了磁刺激的效果和影响磁刺激聚焦性和深度的因素 .最后 ,利用本文的结论 ,讨论了在设计合理的线圈、磁刺激仪以达到理想刺激效果时确定电场强度幅度、聚焦性和深度的基本原则  相似文献   

电刺激方法对肌肉力量与柔韧性的影响   总被引：2，自引：0，他引：2  

黄志刚  周里  吕养民  刘涛 《西安体育学院学报》2000,17(4):93-95

电刺激训练已成为现代运动训练的重要手段之一。众多资料表明 ,电刺激可有效的发展肌肉力量。本研究旨在发展肌肉力量的同时 ,观察其柔韧性的变化。结果表明 ,电刺激训练可显著地提高原动肌肌群和对抗肌肌群肌肉的力量 ,亦可有效的提高肌肉的柔韧性 ,保证肌肉力量与柔韧性同步协调平衡发展  相似文献   

The effects of a calf pump device on second half performance of a simulated soccer match in competitive youth players     

S. Béliard  J. Cassirame  G. Ennequin  G. Coratella  N. Tordi 《Journal of sports sciences》2019,37(6):708-716

During soccer matches, performance decrements have been reported that relate to both physical abilities and technical skills. To investigate the effects of low-frequency electrical stimulation LFES (VeinoplusSport®, Ad Rem Technology, France) administered during half-time recovery on performance alterations during the second half. Twenty-two highly trained young players undertook a soccer-match simulation (SAFT⁹⁰). During half-time, they were randomly assigned to LFES group or Placebo group. Each half was split into 3 bouts of 12 minutes. Following each bout, maximal strike speed (MSS), sprint test (ST), maximal sprint accelerations (MA) and metabolic power (MP) were determined in both groups. Arterial (AF) and venous flows (VF) were measured at rest and at the end of half-time. LEFS group exhibited beneficial effects on performance compared to the Placebo group with a likely effect for MSS, ST, MA, and a possible effect for MP. AF and VF increased statistically more in LEFS group compared to Placebo group. The use of specific calf-pump LFES during half-time of a youth simulated soccer match attenuated the decrease in performance during the second half compared to Placebo group. This effect is most marked at the beginning of the second half with regards to explosive parameters.  相似文献