电-机械延迟的研究现状和趋势

参考国内外的相关文献,阐述电-机械延迟与肌纤维类型、运动疲劳、年龄性别、遗传及环境、肌肉本身状态等关系的研究现状和未来研究趋势.探讨把电—机械延迟运用到实践中,评定运动能力和作为早期运动选材的可靠指标.     

A New Elasticity and Finite Element Formulation for Different Young‘s Modulus When Tenison and Compression Loadings

This paper presents a new elasticity and finite element formulation for different Young‘s modulus when tension and compression loadings in anisotropy meida.The case studies,such as anisotropy and isotropy,were invertigated.A numerical example was shown to find out the changes of neutral axis at the pure bending beams.     

论信仰的社会文化内蕴--"马克思主义信仰学"论二

信仰的本质是人类基于实践基础的一种自我超越。它虽然是一种精神现象和精神活动,但却并不是精神冥思的产物,而是纷繁复杂的社会生活在人的精神世界的内化。因而它具有丰厚的社会文化内蕴,即蕴涵并展示着个人与社会、现实与理想、非理性与理性等诸多关系对子。其结构呈现为诸多关系对子的适度张力状态。这种张力使信仰这种独特的超越成为一种人的植根于现实的终极关怀。     

Multifractal analysis of surface EMG signals for assessing muscle fatigue during static contractions

This study is aimed at assessing muscle fatigue during a static contraction using multifractal analysis and found that the surface electromyographic （SEMG） signals characterized multiffactality during a static contraction. By applying the method of direct determination ofthef（a） singularity spectrum, the area of the multifractal spectrum of the SEMG signals was computed. The results showed that the spectrum area significantly increased during muscle fatigue. Therefore the area could be used as an assessor of muscle fatigue. Compared with the median frequency （MDF）--the most popular indicator of muscle fatigue, the spectrum area presented here showed higher sensitivity during a static contraction. So the singularity spectrum area is considered to be a more effective indicator than the MDF for estimating muscle fatigue.     

《秋颂》中的张力——新批评观中好诗的质素

新批评理论对现代诗歌的批评产生了深刻的影响。以新批评派所倡导的“细读法”对济慈的《秋颂》进行解读，通过分析诗中的悖论、反讽、张力等质素，从而体会其怎样通过客观意象的排列消解诗中的张力而达到和谐统一。     

Expansion of spherical cavity of strain-softening materials with different elastic moduli of tension and compression

An expansion theory of spherical cavities in strain-softening materials with different moduli of tension and com-pression was presented. For geomaterials,two controlling parameters were introduced to take into account the different moduli and strain-softening properties. By means of elastic theory with different moduli and stress-softening models,general solutions cal-culating Tresca and Mohr-Coulomb materials' stress and displacement fields of expansion of spherical cavity were derived. The effects caused by different elastic moduli in tensile and compression and strain-softening rates on stress and displacement fields and development of plastic zone of expansion of cavity were analyzed. The results show that the ultimate expansion pressure,stress and displacement fields and development of plastic zone vary with the different elastic moduli and strain-softening prop-erties. If classical elastic theory is adopted and strain-softening properties are neglected,rather large errors may be the result.     

论当代中国文化面对的时代性张力

当代中国文化面对的时代性张力主要包括了两个基本的方面:其一,在西方现代化过程中主要是以历时性的形态逐渐呈现出来的“前现代”、“现代”与“后现代”,在当代中国却是以共时性的方式被挤压在同一个平面上。其二,当中国还没有完全实现现代化,还没有能够充分享受现代化之积极成就的时候,西方则已经走向了“后现代”,并提出了“走出现代性”的主张。这就使得当代中国在面向未来的选择中面临左冲右突的两难困境。后现代主义思潮的兴起更为清楚地表明:在中国文化的现代开展中,全盘西化此路不通。面向未来的中国文化必须切实挺立民族文化精神的主体性。     

电光调制的物理机制

电光调制的原理是电光效应，是由外加电场引起媒质折射率的变化而产生的双折射现象，电光效应最重要的是线性电光效应。     

微乳液简介

介绍了微乳液的基本性质。讨论了盐浓度、助表面活性剂等对微乳液体系相态的影响,对影响体系界面张力的因素也进行了探讨。     

太极拳运动对中老年人情绪紧张度影响分析

情绪紧张度是人对客观现实的一种特殊反应形式,不同的情绪紧张度能够引起不同的机体反应,如果人长期处于紧张状态,就会降低身体免疫系统的抗病能力。本文通过对习练太极拳中老年人的情绪紧张度进行调查统计,并对主要影响因素进行分析评价,旨在探讨太极拳运动对中老年人情绪状态的影响。