Based on the “Healthy China 2030 Planning Outline”, the literature method and logical analysis method are used to review and analyze the implementation process of China’s school football policy from three dimension...Based on the “Healthy China 2030 Planning Outline”, the literature method and logical analysis method are used to review and analyze the implementation process of China’s school football policy from three dimensions: value, interest appeal and institutional background. The study believes that in order to break through the bottleneck of policy implementation and improve the effect of policy implementation, it is necessary to establish correct values and form broad recognition of policies;meet the reasonable interests of all parties and form a synergy for policy implementation;optimize the institutional environment for policy implementation and form effective incentives.展开更多
Football is one of the most-watched sports,but analyzing players’per-formance is currently difficult and labor intensive.Performance analysis is done manually,which means that someone must watch video recordings and ...Football is one of the most-watched sports,but analyzing players’per-formance is currently difficult and labor intensive.Performance analysis is done manually,which means that someone must watch video recordings and then log each player’s performance.This includes the number of passes and shots taken by each player,the location of the action,and whether or not the play had a successful outcome.Due to the time-consuming nature of manual analyses,interest in automatic analysis tools is high despite the many interdependent phases involved,such as pitch segmentation,player and ball detection,assigning players to their teams,identifying individual players,activity recognition,etc.This paper proposes a system for developing an automatic video analysis tool for sports.The proposed system is the first to integrate multiple phases,such as segmenting the field,detecting the players and the ball,assigning players to their teams,and iden-tifying players’jersey numbers.In team assignment,this research employed unsu-pervised learning based on convolutional autoencoders(CAEs)to learn discriminative latent representations and minimize the latent embedding distance between the players on the same team while simultaneously maximizing the dis-tance between those on opposing teams.This paper also created a highly accurate approach for the real-time detection of the ball.Furthermore,it also addressed the lack of jersey number datasets by creating a new dataset with more than 6,500 images for numbers ranging from 0 to 99.Since achieving a high perfor-mance in deep learning requires a large training set,and the collected dataset was not enough,this research utilized transfer learning(TL)to first pretrain the jersey number detection model on another large dataset and then fine-tune it on the target dataset to increase the accuracy.To test the proposed system,this paper presents a comprehensive evaluation of its individual stages as well as of the sys-tem as a whole.展开更多
综合运用案例分析法、逻辑分析法和归纳法等方法,对国际足球培训补偿机制与其国际体育仲裁院(Court of Arbitration for Sport, CAS)判例进行研究,认为:国际足球培训补偿的合法性来源于欧盟法律基于足球行业的合法性目标所给予的一定限...综合运用案例分析法、逻辑分析法和归纳法等方法,对国际足球培训补偿机制与其国际体育仲裁院(Court of Arbitration for Sport, CAS)判例进行研究,认为:国际足球培训补偿的合法性来源于欧盟法律基于足球行业的合法性目标所给予的一定限度的权利让渡,其性质是职业足球对业余足球或草根足球的反哺机制,其补偿权是国际足球联合会为培训俱乐部在球员转会后获得补偿而创设的一种债权;在足球培训补偿争议的处理中,CAS通过审查培训补偿触发条件和例外情况来确认培训补偿是否到期,通过确认权利主体、补偿权的放弃来明确培训补偿权利,通过审查培训补偿义务主体、义务拒绝以及是否存在规则规避以明晰培训补偿义务,并形成了相应的裁判标准。研究启示:我国足球利益相关者应按照诚信原则履行其权利和义务;足球监管机构应依据公平原则建立健全足球行业实施保障机制;体育仲裁机构应依据公平原则建立足球培训补偿争议的审查和裁判标准,从而充分保障足球培训补偿实施的公正有效。展开更多
背景:由身体接触性运动或交通事故造成的脑震荡远比人们想象的更为严重与常见,近年来引起了媒体、医学界及体育界的广泛关注与高度重视。目的:采用文献计量学方法对有限元方法在脑震荡领域的研究热点与趋势进行可视化分析,从而为中国在...背景:由身体接触性运动或交通事故造成的脑震荡远比人们想象的更为严重与常见,近年来引起了媒体、医学界及体育界的广泛关注与高度重视。目的:采用文献计量学方法对有限元方法在脑震荡领域的研究热点与趋势进行可视化分析,从而为中国在该领域的研究提供一定的参考。方法:基于Web of Science核心集数据库进行文献检索,检索主题词策略为(TS=(Concussion)) AND TS=(Finite element),利用CiteSpace 6.2.R4可视化工具对纳入文献的作者、国家、机构、关键词及被引文献等进行可视化分析。结果与结论:(1)共计纳入215篇文献,发文量与被引量总体上呈上升趋势;学科分布涉及生物医学工程、生物物理学、运动科学、临床神经学及神经科学等学科,呈现多学科交叉融合的趋势;发文量最多的作者是来自爱尔兰都柏林大学的Gilchrist M,发文量最多的机构是渥太华大学,发文量最多的国家是美国。(2)通过关键词分析发现研究的热点聚焦于脑损伤模型的建立用来模拟和预测脑震荡的损伤;脑震荡损伤机制的解析;防护设备和装置的优化设计。(3)通过文献共被引分析发现脑损伤的预测与评估是该领域的知识基础亦是研究热点。(4)有限元方法运用在脑震荡领域的研究热点主要围绕头部损伤预测为主题展开,结合探索大脑损伤机制以及防护装备的设计与改进。(5)随着人工智能与材料学的进步,未来有限元方法在脑震荡损伤领域的研究热点将集中于脑损伤模型、测试方法与防护装备的改进。展开更多
足球合同违约不仅导致赔偿,还可能引发体育制裁。将此类由体育制裁引发的争议提交至国际体育仲裁院(Court of Arbitration for Sport,CAS),须将足球主管机构作为被诉方。在审查此类案件中,仲裁庭首先确认合同违约是否发生在保护期内;对...足球合同违约不仅导致赔偿,还可能引发体育制裁。将此类由体育制裁引发的争议提交至国际体育仲裁院(Court of Arbitration for Sport,CAS),须将足球主管机构作为被诉方。在审查此类案件中,仲裁庭首先确认合同违约是否发生在保护期内;对违约球员、违约俱乐部和诱导球员违约俱乐部施加的体育制裁不同,仲裁庭的审查要件和裁判标准也存在区别。在处理此类案件的过程中,CAS尊重足球主管机构在体育制裁方面的裁量权,同时确保这一裁量权的行使正当及在合理范围之内。展开更多
文摘Based on the “Healthy China 2030 Planning Outline”, the literature method and logical analysis method are used to review and analyze the implementation process of China’s school football policy from three dimensions: value, interest appeal and institutional background. The study believes that in order to break through the bottleneck of policy implementation and improve the effect of policy implementation, it is necessary to establish correct values and form broad recognition of policies;meet the reasonable interests of all parties and form a synergy for policy implementation;optimize the institutional environment for policy implementation and form effective incentives.
文摘Football is one of the most-watched sports,but analyzing players’per-formance is currently difficult and labor intensive.Performance analysis is done manually,which means that someone must watch video recordings and then log each player’s performance.This includes the number of passes and shots taken by each player,the location of the action,and whether or not the play had a successful outcome.Due to the time-consuming nature of manual analyses,interest in automatic analysis tools is high despite the many interdependent phases involved,such as pitch segmentation,player and ball detection,assigning players to their teams,identifying individual players,activity recognition,etc.This paper proposes a system for developing an automatic video analysis tool for sports.The proposed system is the first to integrate multiple phases,such as segmenting the field,detecting the players and the ball,assigning players to their teams,and iden-tifying players’jersey numbers.In team assignment,this research employed unsu-pervised learning based on convolutional autoencoders(CAEs)to learn discriminative latent representations and minimize the latent embedding distance between the players on the same team while simultaneously maximizing the dis-tance between those on opposing teams.This paper also created a highly accurate approach for the real-time detection of the ball.Furthermore,it also addressed the lack of jersey number datasets by creating a new dataset with more than 6,500 images for numbers ranging from 0 to 99.Since achieving a high perfor-mance in deep learning requires a large training set,and the collected dataset was not enough,this research utilized transfer learning(TL)to first pretrain the jersey number detection model on another large dataset and then fine-tune it on the target dataset to increase the accuracy.To test the proposed system,this paper presents a comprehensive evaluation of its individual stages as well as of the sys-tem as a whole.
文摘综合运用案例分析法、逻辑分析法和归纳法等方法,对国际足球培训补偿机制与其国际体育仲裁院(Court of Arbitration for Sport, CAS)判例进行研究,认为:国际足球培训补偿的合法性来源于欧盟法律基于足球行业的合法性目标所给予的一定限度的权利让渡,其性质是职业足球对业余足球或草根足球的反哺机制,其补偿权是国际足球联合会为培训俱乐部在球员转会后获得补偿而创设的一种债权;在足球培训补偿争议的处理中,CAS通过审查培训补偿触发条件和例外情况来确认培训补偿是否到期,通过确认权利主体、补偿权的放弃来明确培训补偿权利,通过审查培训补偿义务主体、义务拒绝以及是否存在规则规避以明晰培训补偿义务,并形成了相应的裁判标准。研究启示:我国足球利益相关者应按照诚信原则履行其权利和义务;足球监管机构应依据公平原则建立健全足球行业实施保障机制;体育仲裁机构应依据公平原则建立足球培训补偿争议的审查和裁判标准,从而充分保障足球培训补偿实施的公正有效。
文摘背景:由身体接触性运动或交通事故造成的脑震荡远比人们想象的更为严重与常见,近年来引起了媒体、医学界及体育界的广泛关注与高度重视。目的:采用文献计量学方法对有限元方法在脑震荡领域的研究热点与趋势进行可视化分析,从而为中国在该领域的研究提供一定的参考。方法:基于Web of Science核心集数据库进行文献检索,检索主题词策略为(TS=(Concussion)) AND TS=(Finite element),利用CiteSpace 6.2.R4可视化工具对纳入文献的作者、国家、机构、关键词及被引文献等进行可视化分析。结果与结论:(1)共计纳入215篇文献,发文量与被引量总体上呈上升趋势;学科分布涉及生物医学工程、生物物理学、运动科学、临床神经学及神经科学等学科,呈现多学科交叉融合的趋势;发文量最多的作者是来自爱尔兰都柏林大学的Gilchrist M,发文量最多的机构是渥太华大学,发文量最多的国家是美国。(2)通过关键词分析发现研究的热点聚焦于脑损伤模型的建立用来模拟和预测脑震荡的损伤;脑震荡损伤机制的解析;防护设备和装置的优化设计。(3)通过文献共被引分析发现脑损伤的预测与评估是该领域的知识基础亦是研究热点。(4)有限元方法运用在脑震荡领域的研究热点主要围绕头部损伤预测为主题展开,结合探索大脑损伤机制以及防护装备的设计与改进。(5)随着人工智能与材料学的进步,未来有限元方法在脑震荡损伤领域的研究热点将集中于脑损伤模型、测试方法与防护装备的改进。
文摘足球合同违约不仅导致赔偿,还可能引发体育制裁。将此类由体育制裁引发的争议提交至国际体育仲裁院(Court of Arbitration for Sport,CAS),须将足球主管机构作为被诉方。在审查此类案件中,仲裁庭首先确认合同违约是否发生在保护期内;对违约球员、违约俱乐部和诱导球员违约俱乐部施加的体育制裁不同,仲裁庭的审查要件和裁判标准也存在区别。在处理此类案件的过程中,CAS尊重足球主管机构在体育制裁方面的裁量权,同时确保这一裁量权的行使正当及在合理范围之内。
