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基于尺度自适应局部时空特征的足球比赛视频中的多运动员行为表示
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作者 王智文 蒋联源 +4 位作者 王宇航 王日凤 张灿龙 黄镇谨 王鹏涛 《计算机应用》 CSCD 北大核心 2016年第8期2134-2138,共5页
为提高足球比赛视频中的多运动员行为识别的准确率,提出一种基于尺度自适应局部时空特征的足球比赛视频中的多运动员行为表示方法,利用时空兴趣点来表示足球比赛视频中的多运动员行为。首先将足球比赛视频序列中的多运动员行为看作是三... 为提高足球比赛视频中的多运动员行为识别的准确率,提出一种基于尺度自适应局部时空特征的足球比赛视频中的多运动员行为表示方法,利用时空兴趣点来表示足球比赛视频中的多运动员行为。首先将足球比赛视频序列中的多运动员行为看作是三维空间中的时空兴趣点的集合,然后采用直方图量化技术将时空兴趣点集合量化为维数固定的直方图(即时空单词),最后采用K-means聚类算法生成时空码本。在聚类生成码本之前,对每个时空兴趣点都进行了归一化,以保证其缩放和平移不变性。实验结果表明,该方法能够大大减少足球比赛视频中的多运动员行为识别算法的计算量,显著提高识别的准确率。 展开更多
关键词 时空兴趣点 运动员行为表示 行为识别 K-MEANS聚类算法 时空特征检测操作数
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基于运动员行为的马拉松赛场垃圾桶设计研究 被引量:1
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作者 吴绍兰 詹子含 《工业设计》 2022年第6期55-57,共3页
当前马拉松比赛的环境污染问题非常的严重,但是没有受到太多的关注。文章通过观察法、情景分析法等研究方法,从马拉松运动员行为和心理的角度分析了马拉松运动员在赛时丢垃圾的行为与心理特点,根据其行为特点提出赛场垃圾桶的再设计策略... 当前马拉松比赛的环境污染问题非常的严重,但是没有受到太多的关注。文章通过观察法、情景分析法等研究方法,从马拉松运动员行为和心理的角度分析了马拉松运动员在赛时丢垃圾的行为与心理特点,根据其行为特点提出赛场垃圾桶的再设计策略,使产品的使用方式更贴合用户的行为,减少用户的操作负荷。同时通过设计引导行为,改变运动员的固有认知和心理,从而达到减少赛时垃圾乱丢现象的效果。 展开更多
关键词 产品设计 垃圾桶 运动员行为 马拉松环境污染
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当前运动员行为习惯现状分析与思考
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作者 田雨 《发明与创新(初中生)》 2019年第11期77-77,共1页
安阳市体育运动学校自1985年建校以来,以竞技体育和休闲体育等专业为主导,成为了安阳市竞技体育的主力军,培养了一批批优秀运动员和优秀毕业生。高素质的运动员不仅能带给人们欣赏竞技者带来的美感,而且能展现其精神风貌,还能为体育成... 安阳市体育运动学校自1985年建校以来,以竞技体育和休闲体育等专业为主导,成为了安阳市竞技体育的主力军,培养了一批批优秀运动员和优秀毕业生。高素质的运动员不仅能带给人们欣赏竞技者带来的美感,而且能展现其精神风貌,还能为体育成绩的提高提供了有力保障。 展开更多
关键词 体校 运动员行为习惯 现状分析 思考
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教练员领导行为、激励氛围与运动员激励内化——来自全国361°排球锦标赛球队的实证分析 被引量:13
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作者 蔡端伟 吴贻刚 《天津体育学院学报》 CAS CSSCI 北大核心 2014年第2期142-146,共5页
教练员领导行为对团队绩效和运动员正面积极行为的研究在运动心理学领域受到广泛关注,但其内在作用机理与规律仍然是理论黑箱。基于目标导向理论的激励氛围和基于自我决定理论的基本心理需求,为此提供了一个全新的解释框架,成为连接教... 教练员领导行为对团队绩效和运动员正面积极行为的研究在运动心理学领域受到广泛关注,但其内在作用机理与规律仍然是理论黑箱。基于目标导向理论的激励氛围和基于自我决定理论的基本心理需求,为此提供了一个全新的解释框架,成为连接教练员外部激励与运动员内部动机形成的桥梁与纽带。教练员通过其领导行为营造出任务导向型激励氛围,诱发运动员的激励内化,进而促进运动员正面积极的行为取向。以参加2013年全国361°排球锦标赛的运动员为样本,通过结构方程法探究了教练员领导行为、激励氛围与运动员激励内化及其行为倾向选择的相关关系。在教练员领导行为方面,社会支持、训练指导和正面反馈等行为是促进运动员激励感知与内化的内在驱动力与关键因素;同时,教练员所营造的任务导向型激励氛围是链接教练员行为和运动员激励内化的中介条件;在激励内化方面,教练员激励氛围需要通过运动员自主感,特别是团队归属感的形成才能发挥效力。 展开更多
关键词 教练员领导行为 激励氛围 基本心理需求 运动员行为倾向
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不同项目、不同性别运动员攻击性行为差异研究
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作者 周莉莉 《黄冈师范学院学报》 2009年第6期79-82,100,共5页
本研究采用问卷调查法,以武汉体育学院体育专业的90名学生为研究对象,研究了搏击类(摔跤)、隔网类(网球)、个人表演类(艺术体操)三类运动项目、不同性别学生的攻击性差异。结果发现:1.搏击类专业学生比隔网类和个人表演类专业学生具有... 本研究采用问卷调查法,以武汉体育学院体育专业的90名学生为研究对象,研究了搏击类(摔跤)、隔网类(网球)、个人表演类(艺术体操)三类运动项目、不同性别学生的攻击性差异。结果发现:1.搏击类专业学生比隔网类和个人表演类专业学生具有更强的攻击性,且在人身攻击方面存在显著性差异;2.男生攻击性显著高于女生,且在人身攻击方面存在显著性差异。本研究分析了差异的原因。 展开更多
关键词 运动项目 性别 运动员攻击性行为 差异
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Exploring social movement concepts and actions in a knowledge uptake and sustainability context: A concept analysis
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作者 Doris Grinspun Katherine Wallace +21 位作者 Shelly-Anne Li Susan McNeill Janet Elaine Squires Jesús Bujalance Maryanne D’Arpino Gina De Souza Nataly Farshait John Gabbay Ian D.Graham Alison Hutchinson Kim Kinder Celia Laur Tina Mah Julia E.Moore Jennifer Plant Jodi Ploquin P.Jim A.Ruiter Daphney St-Germain Margie Sills-Maerov May Tao Marita Titler Junqiang Zhao 《International Journal of Nursing Sciences》 CSCD 2022年第4期411-421,共11页
Objectives:To share a concept analysis of social movement aimed at advancing its application to evidence uptake and sustainability in health-care.Methods:We applied Walker and Avant method to clarify the concept of so... Objectives:To share a concept analysis of social movement aimed at advancing its application to evidence uptake and sustainability in health-care.Methods:We applied Walker and Avant method to clarify the concept of social movement in the context of knowledge uptake and sustainability.Peer-reviewed and grey literature databases were systematically searched for relevant reports that described how social movement action led to evidence-based practice changes in health and community settings.Titles,abstracts and full texts were reviewed independently and in duplicate,resulting in 38 included articles.Results:Social movement action for knowledge uptake and sustainability can be defined as individuals,groups,or organizations that,as voluntary and intrinsically motivated change agents,mobilize around a common cause to improve outcomes through knowledge uptake and sustainability.The 10 defining attributes,three antecedents and three consequences that we identified are dynamic and interrelated,often mutually reinforcing each other to fortify various aspects of the social movement.Examples of defining attributes include an urgent need for action,collective action and collective identity.The concept analysis resulted in the development of the Social Movement Action Framework.Conclusions:Social movement action can provide a lens through which we view implementation science.Collective action and collective identity e concepts less frequently canvassed in implementation science literature e can lend insight into grassroots approaches to uptake and sustainability.Findings can also inform providers and change leaders on the practicalities of harnessing social movement action for realworld change initiatives.By mobilizing individuals,groups,or organizations through social movement approaches,they can engage as powered change agents and teams that impact the individual,organizational and health systems levels to facilitate knowledge uptake and sustainability. 展开更多
关键词 Collective action Collective identity GRASSROOTS Implementation science Knowledge-to-action MOBILIZATION Social movement action
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Nutritional Knowledge and Behavior of Professional Athletes in Khorramabad
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作者 Mahnaz Mardani Behzad Bazgir +2 位作者 Akram Beigi Bazgir Hossein Mansumezhad Maryam Rezapour 《Journal of Life Sciences》 2017年第2期65-73,共9页
Today it is proved that the lack of adequate nutritional knowledge leads to problems such as obesity, overweight and increased cardiovascular diseases. However, many obstacles such as poor financial support, lack of t... Today it is proved that the lack of adequate nutritional knowledge leads to problems such as obesity, overweight and increased cardiovascular diseases. However, many obstacles such as poor financial support, lack of time and poor nutritional knowledge can influence achievement of optimal nutrition which is proportional to the level of the athlete's physical activity. The purpose of this study was to determine the level of nutritional knowledge and dietary behavior of athletes in Khorramabad in 2013. Professional athletes of Khorramabad, Iran, with more than one year of regular exercise and at least one course participating in national championships competitions were studied in this cross-sectional, descriptive-analytic study. The samples included 247 athletes aged 17-29 years. Their nutritional knowledge and behavior were measured by the nutritional knowledge and behavior inventory. Results: The results showed a significant difference in nutritional knowledge of athletes by gender and educational level; female athletes have higher nutritional knowledge than male athletes. A gender-dependent difference was found in nutritional behavior; despite their higher nutritional knowledge, female athletes have weaker nutritional behavior than male athletes. However, no significant correlation was found between BMI and nutritional knowledge and behavior of the athletes. Moreover, findings showed that nutritional knowledge and behavior could be significantly different in various sports. 展开更多
关键词 SPORTS nutritional knowledge nutritional behavior Khorramabad.
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English professional football players concussion knowledge and attitude
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作者 Joshua M.Williams Jody L.Langdon +1 位作者 James L.Mc Millan Thomas A.Buckley 《Journal of Sport and Health Science》 SCIE 2016年第2期197-204,共8页
Background: Concussions are a common pathology in football and multiple misconceptions exist amongst the players and managers. To address these misconceptions, and potentially reduce concussion associated sequela, ef... Background: Concussions are a common pathology in football and multiple misconceptions exist amongst the players and managers. To address these misconceptions, and potentially reduce concussion associated sequela, effective educational interventions need to be developed. However, the current knowledge and attitude status must be ascertained to appropriately develop these interventions. The purpose of this study was to assess the concussion knowledge and attitude of English professional footballers. Methods: Twenty-six participants from one English Football League Championship club completed the study. A mixed methods approach included the Rosenbaum Concussion Knowledge and Attitudes Survey (RoCKAS) and a semi-structured interview. The RoCKAS contains separate knowledge (055) and attitude (15-75) scores and was followed by a semi-structured interview consisting of concussion knowledge, attitude, and behavior related questions. Results: The mean score on the RoCK.AS knowledge was 16.4± 2.9 (range 11-22) and the attitude score was 59.6 ± 8.5 (range 41-71). The interview responses identified inconsistencies between the RoCKAS and the intended behaviors, endorsing multiple concussion misconceptions, and revealed barriers to concussion reporting. Conclusion: The results of this study suggest that Championship Level English footballers have moderate concussion knowledge, safe attitudes, and good concussion symptom recognition when assessed with pen and paper questionnaires. However, within the semi-structured interview many respondents reported unsafe concussion behaviors despite accurately identifying the potential risks. Further, multiple barriers to concussion reporting were identified which included perceived severity of the injury, game situations, and the substitution rule. These findings can help form the foundation of educational interventions to potentially improve concussion reporting behaviors amongst professional footballers. 展开更多
关键词 CONCUSSION Concussion recovery Concussion reporting FOOTBALL Mild traumatic brain injury RoCKAS
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