武汉市业余自行车运动发展制因及对策分析

我国业余自行车运动是全民健身运动的一部分,研究城市业余自行车运动的发展情况,无疑对发展业余自行车全民健身运动具有重要的指导意义。为此,以武汉市为个案,对影响武汉市业余自行车运动的发展制约因素进行了深入调研,并在此基础上,有针对性地提出了相关的建议和对策,以期为指导武汉市乃至全国城市业余自行车运动的蓬勃发展提供理论参考。     

研析青少年自行车运动员常见的运动损伤

通过对广东省部分地市青少年自行车运动员的运动损伤的调查,分析总结了在自行车运动中运动损伤发生的原因,损伤部位和性质,提出了自行车运动中预防运动损伤的措施。     

阶段专项训练对少年自行车运动员生理、生化机能的影响

自行车运动早已全面登上世界竞技体育赛坛,我国自行车运动水平也在不断提高,但人们对少年自行车运动员进行科学训练的研究还比较薄弱。以少年自行车运动员为实验对象,研究阶段专项训练对其生理、生化机能的影响,探索运动训练对少年自行车运动员身体机能影响的规律,为我国自行车运动科学训练提供一些理论依据。     

消费升级视域下我国自行车运动参与人口的消费水平和群体特征

采用问卷调查法、数理统计法、访谈法,就我国自行车运动参与人口消费水平和群体特征进行研究,认为我国自行车运动参与人口消费水平较高,但仍以实物消费为主;消费需求呈多元化发展;消费群体呈现中青年化、高学历、社交性特征;个人年收入水平、骑行月里程、骑行对本人的重要程度和参与形式是影响自行车运动参与人口消费水平的主要因素;老年参与群体具有较大的可挖掘的消费潜力。研究建议：要丰富自行车运动产品和服务供给;促进自行车运动与相关产业融合发展;加快自行车道路建设,夯实自行车运动发展基础;加大自行车运动的推广和宣传力度;充分发挥自行车俱乐部作用,提高人口可持续消费能力;提高老年群体和女性群体参与比例;完善赛事体系建设,促进赛事改革进一步落地,进一步扩大我国自行车运动参与人口消费水平。     

宁夏地区自行车运动概述

本文概述了宁夏自行车运动的发展和取得的成就,论述了自行车运动在我区普遍发展的四大特点。     

场地自行车运动员观察力的培养

运用运动心理、运动训练学相关知识,采用理论分析方法,结合场地自行车运动项目实际情况,简要分析场地自行车运动员观察力训练在竞技体育领域里的重要意义,研究专项训练与运动观察能力的相互关系,同时总结归纳了一些运动观察能力的训练方法和手段,为场地自行车教练员培养运动员观察能力提供依据。     

普通高校业余自行车运动开展现状的调查与分析——以宿州学院为例

通过文献资料法,问卷调查法,数理统计法,逻辑分析法等四种方法对普通高校业余自行车运动的开展现状情况进行调查与分析,得到了普通高校业余自行车运动参与者年级趋于新生化,女生少男生多,学生的安全意识薄弱,消费能力低,场地设施不全等问题。旨在找到业余自行车运动在普通高校开展的影响因素以及提出相应的建议和对策。为今后更好地普及和发展普通高校业余自行车运动提供理论依据。     

青少年自行车运动员的科学选材

分析了青少年运动员的身体形态、生理机能、运动素质、心理素质等因素对自行车运动项目的影响,试图为青少年自行车运动员选材提供必要的科学依据.     

基于Mixed logit模型分析的山地自行车运动 需求调查研究

采用文献资料、现场调查等研究方法,结合Mixed logit模型对山地自行车运动场地需求选择变量进行调查分析,发现路面状况、场地规划严重影响山地自行车运动爱好者的场地选择倾向;路面状况良好、路线设计完善的场地更具挑战性;同时,将广义估计方程应用于需求数据中,以便评估每年的户外山地自行车运动,并且计算所选取的6个场地中山地自行车运动的消费者盈余;该研究结果旨在强调路径评估、场地管理以及资源管理的重要性,并为山地自行车运动产业发展、公园管理规划提供可参考依据。     

概念自行车设计

我国是个自行车生产大国,拥有庞大的白行车使用人群。随着人们生活水平的提高,今天的自行车已经不单纯是一件代步工具,自行车运动已经成为一种健康、绿色的运动,也是一种时尚的生活方式。本人介绍了一种可单人骑也可多人骑得概念自行车以及它结构独特、占用空间小等特点。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with     

Journal of Donghua University ( English Edition) Contents of Volume 31

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