优秀竞走运动员江姗姗冬训训练负荷研究

冬训是全年训练周期中唯一不受竞赛期影响,可长时间进行系统训练的准备期,对于提高运动员竞技能力和运动成绩尤为重要。以优秀女子竞走运动员江姗姗为研究个案,运用实地调查法、数理统计法对江姗姗2020年冬训期训练情况进行梳理和总结,探析其冬训期训练负荷和生理指标变化的特点和规律,旨在为竞走项目冬训期科学化训练提供有益参考。     

2020-2021赛季CBA职业联赛后卫攻防能力的综合评价研究

以2020-2021赛季CBA常规赛后卫球员的攻防能力作为研究对象,对后卫球员的主要攻防指标进行因子分析,构建了后卫球员攻防能力的综合评价模型。结果显示:后卫球员攻防能力主要受投篮稳定能力、三分能力、地面攻防能力和空中对抗能力的影响;通过评价模型得出的后卫球员攻防能力综合得分及排序,与球员的综合实力和比赛表现趋于一致。     

试论功能发展型产品创新

沿着既有的技术功能方向进行的产品创新即可称为功能发展型产品创新。阐述了功能发展型产品创新的意义和实现途径,指出这种利用新的技术手段去发展以往的产品技术功能是十分有效的产品创新形式。     

网络安全浅析

文中就网络安全问题介绍了其策略、技术、功能、服务等相关内容,并说明了路由选择技术、加密技术和防火墙技术对网络安全的影响,给出了各技术的分类、主要技术特征,同时使读者对各种技术的实施应用有所了解。     

元治理视域下档案治理主体协同策略研究

在国家治理体系和治理能力现代化目标提出后,档案管理逐步向档案治理转变。相较于档案管理,档案治理强调主体的多元化、手段的多样与过程的互动。从主体的多元化角度来看,当前档案治理体系中主体数量不断增加,但实际工作中并未产生明显的协同效应,形成合力。本文以政府的定位为核心,引入元治理理论,构建理念、主体与制度三个维度的理论分析框架。通过理论指导与政策文本分析,提出了兼顾理念与实操的档案治理主体协同对策,包括转变理念是前提、合理定位是关键、制度规范是保障,以期在各主体共同参与协作下,构建安全高效、内涵丰富的现代化档案治理体系。     

Precision measurement of the Newtonian gravitational constant

The Newtonian gravitational constant G, which is one of the most important fundamental physical constants in nature, plays a significant role in the fields of theoretical physics, geophysics, astrophysics and astronomy. Although G was the first physical constant to be introduced in the history of science, it is considered to be one of the most difficult to measure accurately so far. Over the past two decades, eleven precision measurements of the gravitational constant have been performed, and the latest recommended value for G published by the Committee on Data for Science and Technology (CODATA) is (6.674 08 ± 0.000 31) × 10⁻¹¹ m³ kg⁻¹ s⁻² with a relative uncertainty of 47 parts per million. This uncertainty is the smallest compared with previous CODATA recommended values of G; however, it remains a relatively large uncertainty among other fundamental physical constants. In this paper we briefly review the history of the G measurement, and introduce eleven values of G adopted in CODATA 2014 after 2000 and our latest two values published in 2018 using two independent methods.     

Understanding the relative contribution of technical and tactical performance to match outcome in Australian Football

ABSTRACT

The aim of this study was to assess if tactical and technical performance indicators (PIs) could be used in combination to model match outcomes in Australian Football (AF). A database of 101 technical PIs and 14 tactical PIs from every match in the 2009–2016 Australian Football League (AFL) seasons was merged. Two outcome measures Win-loss and Score margin were used as dependent variables. The top 45 ranked technical and tactical PIs from a feature selection process were used to model match outcome using decision tree and Generalised Linear Models (GLMs). Of the top 45 selected features, this included seven tactical PIs. The Win-loss-based Decision tree model achieved a classification accuracy of 89.0% and GLM 93.2%. A Score margin-based GLM achieved a root mean squared error (RMSE) of 6.9 points. A combined approach to the classification of match outcomes provided no improvement in model accuracy compared with previous literature. However, this study has established the relative importance of technical and tactical measures of performance in relation to successful team performance in AF.     

大学武术教学艺术探讨

文章从分析大学生厌学入手,根据实际情况详细地介绍培养大学生武术学习兴趣、培养学生欣赏水平和选择多样性教学艺术手段的方法。     

我国少数民族运动会的发展现状及对策研究

文章运用文献资料研究法和逻辑分析法对我国七届民运会的表演项目、竞赛项目的设置以及对民运会单个项目进行比较分析,得出我国民运会在以:"发展民族体育,增强民族体质,加强民族团结,振奋民族精神"的宗旨的指导下,本着"平等、团结、繁荣、进步"的原则,正逐步迈上健康的发展轨道,但同时我们也发现其所存在的问题和不足,并由此提出了相应的发展对策和建议。     

《功夫熊猫》对中国武术的影响

《功夫熊猫》的成功使我们意识到我国传统文化的传承应具有新的时代性,武术动漫的创作不仅仅是国内传统文化的＂拷贝＂,更是对传统文化和现代流行元素有力的结合而走出一条发展道路;中国武术的发展不能照搬西方体育发展模式,应在借鉴他人成功经验的基础上,开辟一条符合自己特点的道路。这是弘扬中国文化、发展中国武术的正确选择,也是时代发展的必然要求。