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What do coaches want to know about sports-related concussion?A needs assessment study
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作者 Lindsay Sullivan Michal Molcho 《Journal of Sport and Health Science》 SCIE 2018年第1期102-108,共7页
Purpose: This study aims to identify the concussion-related training and education needs of Gaelic Athletic Association(GAA) coaches in Ireland,as well as the preferred method of concussion education delivery.Methods:... Purpose: This study aims to identify the concussion-related training and education needs of Gaelic Athletic Association(GAA) coaches in Ireland,as well as the preferred method of concussion education delivery.Methods: We used a self-report questionnaire to collect data from a convenience sample of 108 GAA coaches in Ireland. Data were captured on(1) informational needs and desires,(2) preferred methods of delivery, and(3) concussion practices and procedures. Questionnaires were completed electronically from June 3 rd–September 29 th, 2015.Results: Coaches indicated that they were most interested in receiving information about the(1) signs and symptoms of concussion,(2) assessment of concussion, and(3) return-to-play guidelines. Over two-thirds of participants indicated that in-person training would be the most effective mode of delivery of concussion education for this population. Additionally, only 10% coaches reported that before the start of the season they talked to their athletes about concussion management and safety, and this was more common among coaches who reported being formally educated about concussion.Conclusion: Our findings reveal a disconnect between the concussion education needs and the education that is currently provided to GAA coaches, in terms of content and delivery modality. Our results suggest a need for a multifaceted approach to concussion education, tailored to the needs and learning preferences of the target population. 展开更多
关键词 coaches CONCUSSION Concussion education GAA Mild traumatic brain injury Needs assessment
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Stretching in the prevention of hamstring strains: Attitudes, beliefs and current practices among football coaches in Mauritius
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作者 Kelly Chan Fawzi M. Mahomoodally Rajiv Veeren 《Open Journal of Preventive Medicine》 2012年第2期141-148,共8页
Context and Objective: Hamstring strain is a common injury in football and it causes a significant amount of time lost from competition and training. Since poor flexibility is thought to predispose to muscle strain, s... Context and Objective: Hamstring strain is a common injury in football and it causes a significant amount of time lost from competition and training. Since poor flexibility is thought to predispose to muscle strain, stretching is routinely recommended during warm-up routines by coaches to prevent injuries. However, available evidence suggests that pre-exercise stretching (PES), especially static stretching, has no benefit on injury rates and may even reduce performance in explosive type activities. We designed this study to assess the attitudes, beliefs and practices of football coaches regarding stretching in the prevention of hamstring strains. Design: A cross-sectional survey. Setting: Mauritius Football Association (MFA). Participants: 26 football coaches registered with the MFA. Intervention: Questionnaires were distributed to football coaches of the MFA via sports officers. Questionnaires were then collected two weeks after distribution. Main Outcome Measures: Attitudes, beliefs and practices of football coaches regarding stretching in the prevention of ham-string strains. Results: MFA coaches held generally positive attitudes and beliefs towards stretching. 88% of coaches felt that PES is beneficial and 93% believed that PES prevents hamstring strains. The majority of coaches recommended stretching after warming up (81%) and after the training session (93%). 76% of coaches also advised stretching outside the training sessions. 96% of coaches used static stretching to stretch the hamstrings. The hamstrings were stretched on average for 4 times at each training session and the mean duration of a static stretch was 12 seconds. Conclusions: Nearly all coaches believed that PES prevents hamstring strains although evidence is limited. Some of the coaches’ beliefs and practices were not in line with current recommendations. Coaches reported that their stretching practices would be most likely influenced by scientific research. Thus there is an urgent need to devise awareness and training programmes in this area. 展开更多
关键词 STRETCHING HAMSTRINGS STRAINS FOOTBALL ATTITUDES BELIEFS FOOTBALL coaches
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Health Pedagogy and Sport: Attitudes and Practices of Gymnastics Coaches
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作者 Silvia Coppola Rodolfo Vastola 《Journal of Sports Science》 2019年第4期115-122,共8页
Gymnasts are exposed to intense training,frequent competitions,controlled diets and high levels of psychological distress in youth age.These aspects can negatively affect athletic performance and have health consequen... Gymnasts are exposed to intense training,frequent competitions,controlled diets and high levels of psychological distress in youth age.These aspects can negatively affect athletic performance and have health consequences.Accordingly,if the coaches do not possess adequate knowledge and specific multi-disciplinary skills related to sports practice and health pedagogy,young athletes can be exposed to different health risks.The aim of this study is to investigate the knowledge and attitudes of coaches and identify any education needs to enhance or preserve the gymnasts’well-being.The sample is represented by 98 Italian rhythmic gymnastics coaches of different levels.The data were obtained by using structured and anonymous questionnaires with open and closed answers administered through interview.The aspects examined are related to nutrition,food supplements,overtraining syndrome,educational topics,gymnasts’hassles and trainings needs of coaches.Critical aspects that emerge from this study show the need for specific scientific training and support for coaches.This objective can be achieved by providing constant technical and scientific support,in order to make the coaches fully aware of their educational,pedagogical and long-term health responsibilities of their athletes. 展开更多
关键词 GYMNASTICS TRAINING education coaches HEALTH PEDAGOGY
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Coaches’ Speech in Regard to Score and Match Phase
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作者 Vicente Calpe-Gómez JoséFrancisco Guzmán 《Journal of Sports Science》 2021年第1期17-27,共11页
The aim of this study was to analyse the rate and content of 10,430 messages,sent by 21 handball coaches in 21 matches,in relation to score and match phase.Three situations were defined as regards score:large victory,... The aim of this study was to analyse the rate and content of 10,430 messages,sent by 21 handball coaches in 21 matches,in relation to score and match phase.Three situations were defined as regards score:large victory,tight game,and large defeat;and four phases for match phase:part 1 and 2 of first half,and part 1 and 2 of second half.Message rates were calculated by dividing the number of messages sent at each level of score and match phase by the elapsed time.To calculate the content,messages were coded using Coach Analysis and Intervention System and percentages were calculated according to score and match phase.Chi-square analysis showed statistically significant differences for rate of messages by score(χ^(2)=211.06,df=2,sig<0.001),and match phase(χ^(2)=23.704,df=3;sig<0.001);and for percentage of content by score(χ^(2)=444.011,df=42,sig<0.001)and match phase(χ^(2)=201.706,df=63,sig<0.001).Results can help to establish guidelines to increase the quality of coaches’speech. 展开更多
关键词 Coaching situational variables communicational skills observational methodology
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Flow and sound fields of scaled high-speed trains with different coach numbers running in long tunnel
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作者 Qiliang Li Yuqing Sun +1 位作者 Menghan Ouyang Zhigang Yang 《Railway Engineering Science》 EI 2024年第3期401-420,共20页
Segregated incompressible large eddy simulation and acoustic perturbation equations were used to obtain the flow field and sound field of 1:25 scale trains with three,six and eight coaches in a long tunnel,and the aer... Segregated incompressible large eddy simulation and acoustic perturbation equations were used to obtain the flow field and sound field of 1:25 scale trains with three,six and eight coaches in a long tunnel,and the aerodynamic results were verified by wind tunnel test with the same scale two-coach train model.Time-averaged drag coefficients of the head coach of three trains are similar,but at the tail coach of the multi-group trains it is much larger than that of the three-coach train.The eight-coach train presents the largest increment from the head coach to the tail coach in the standard deviation(STD)of aerodynamic force coefficients:0.0110 for drag coefficient(Cd),0.0198 for lift coefficient(Cl)and 0.0371 for side coef-ficient(Cs).Total sound pressure level at the bottom of multi-group trains presents a significant streamwise increase,which is different from the three-coach train.Tunnel walls affect the acoustic distribution at the bottom,only after the coach number reaches a certain value,and the streamwise increase in the sound pressure fluctuation of multi-group trains is strengthened by coach number.Fourier transform of the turbulent and sound pressures presents that coach number has little influence on the peak frequencies,but increases the sound pressure level values at the tail bogie cavities.Furthermore,different from the turbulent pressure,the first two sound pressure proper orthogonal decomposition(POD)modes in the bogie cavities contain 90%of the total energy,and the spatial distributions indicate that the acoustic distributions in the head and tail bogies are not related to coach number. 展开更多
关键词 Flow and sound fields Scaled high-speed trains Different coach numbers Long tunnel Proper orthogonal decomposition
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Use of cognitive-behavioral career coaching to reduce work anxiety and depression in public employees
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作者 Mkpoikanke Sunday Otu Maximus Monaheng Sefotho 《World Journal of Clinical Cases》 SCIE 2024年第2期322-334,共13页
BACKGROUND Public employees worldwide are increasingly concerned about work anxiety and depression.Cognitive-behavioral career coaching has emerged as a promising strategy for addressing these mental health disorders,... BACKGROUND Public employees worldwide are increasingly concerned about work anxiety and depression.Cognitive-behavioral career coaching has emerged as a promising strategy for addressing these mental health disorders,which can negatively impact on a person's overall well-being and performance.AIM To examine whether cognitive-behavioral career coaching reduces work anxiety and depression among Nigerian public employees.METHODS A total of 120 public employees(n=60)suffering from severe anxiety and depression were randomly assigned to the treatment or control groups in this study.Cognitive behavioral coaching was provided twice a week to those in the treatment group,whereas no treatment was given to those in the control group.As part of the study,the Hamilton Anxiety Rating Scales and Beck Depression Inventory were used to collect data.RESULTS Analysis of covariance of the data from participants indicates a significant effect of cognitive-behavioral career coaching on work anxiety and depression.CONCLUSION Insights into the underlying mechanisms by which cognitive behavior career coaching exerts its effects have been gained from this study.Also,the study has gathered valuable data that can inform future practice and guide the development of strategies for supporting mental health at work. 展开更多
关键词 Cognitive-behavioral career coaching Work anxiety Depression Public employees North Central Nigeria
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What is the role of cognitive-behavioral career coaching in mitigating work anxiety and depression among public employees?
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作者 Haewon Byeon 《World Journal of Clinical Cases》 SCIE 2024年第34期6679-6683,共5页
This editorial explores the study by Mkpoikanke Sunday Otu and Maximus Monaheng Sefotho on the use of cognitive-behavioral career coaching(CBCC)to reduce work anxiety and depression among public employees.Public secto... This editorial explores the study by Mkpoikanke Sunday Otu and Maximus Monaheng Sefotho on the use of cognitive-behavioral career coaching(CBCC)to reduce work anxiety and depression among public employees.Public sector workers often face significant psychological stressors,leading to mental health issues that impair well-being and job performance.The study employed a grouprandomized trial design,involving 120 public employees diagnosed with severe anxiety and depression.Participants were divided into a treatment group,receiving CBCC,and a control group with no intervention.Results showed a significant reduction in anxiety and depression levels in the treatment group,sustained through follow-up assessments.The findings underscore the clinical relevance of CBCC as an effective intervention for improving mental health among public employees.Future research should explore the scalability of CBCC across different sectors and cultural contexts,as well as its integration with other mental health interventions.This editorial advocates for the broader implementation of CBCC practices in public service to enhance employee productivity and psychological well-being.By addressing cognitive distortions and fostering adaptive coping mechanisms,CBCC can help public employees navigate complex professional environments,ultimately contributing to a healthier and more efficient workforce. 展开更多
关键词 Cognitive-behavioral career coaching Public sector employees Mental Health ANXIETY DEPRESSION
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Coaches Made-in-China
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作者 TANG YUANKAI 《Beijing Review》 2008年第36期28-29,共2页
China’s latest exportan overseas coaching legion,received lots of attention as well as understanding in Beijing 0n the evening of August 23, one day before the closing of the Beijing Olympics, the Chinese diving team... China’s latest exportan overseas coaching legion,received lots of attention as well as understanding in Beijing 0n the evening of August 23, one day before the closing of the Beijing Olympics, the Chinese diving team was only one gold short of its dream. The last diving event was the men’s 10 meters platform. The Chinese audience was confident that their divers would secure this gold. 展开更多
关键词 coaches Made-in-China World
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GOLF MONTHLY TOP 25 COACHES
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《世界高尔夫》 2005年第3期17-17,共1页
从2004年12月起,《世界高尔夫》在全英国范围内搜寻25名顶级高尔夫教练。一共有120人入围提名名单,最后,我们经过严格的筛选,25名球技高超、同时善于针对不同的学员进行讲解的25名教练脱颖而出。他们的基本信息被收录在右表。
关键词 世界高尔夫 GOLF MONTHLY TOP 25 coaches
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Grass-Root Coaches Knowledge, Understanding, Attitude And Confidence to Deliver Injury Prevention Training in Youth Soccer: a Comparison of Coaches in Three EU Countries
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作者 Mark De Ste Croix F.Ayala +2 位作者 S.Hernandez Sanchez M.Lehnert J.Hughes 《Journal of Science in Sport and Exercise》 2020年第4期367-374,共8页
Purpose It is well recognised that injury prevention training can reduce injury incidence,however current coach education pathways do not provide grass-root coaches with the knowledge and confidence to deliver such tr... Purpose It is well recognised that injury prevention training can reduce injury incidence,however current coach education pathways do not provide grass-root coaches with the knowledge and confidence to deliver such training to youth players.The aim of this study was to explore differences in knowledge,understanding,attitude and confidence to deliver such injury prevention training in three European countries.Methods A total of 269 grass-root soccer coaches from 3 European countries(Czech Republic,UK,Spain)were recruited for this study.A validated questionnaire exploring knowledge,understanding,attitude towards and confidence to deliver youth injury prevention training was completed prior to a 2 h workshop on injury prevention training.Differences between countries was examined using Bayesian factors to quantify the evidence for and against the hypothesis of independence(H0)by assuming a Poisson sampling scheme(as there was no a priori restriction on any cell count,nor on the grand total)(BF10 Poisson).Results Current knowledge,attitude and confidence to deliver injury prevention training to youth players was poor across all three European countries.Relatively few coaches were currently using injury prevention training in their coaching sessions(23%).There were some country specific differences for attitude towards injury prevention training and confidence to deliver injury training,with Spanish coaches reporting a more positive attitude and confidence to deliver such training.Significantly fewer coaches in the UK were using injury prevention training compared to coaches in Spain and the Czech Republic.Conclusion As coaches identified a need for coach education and few were delivering injury prevention training,there is a clear need to embed and implement this programme into the grassroots coaching framework of sports governing bodies to improve adoption,implementation and maintenance. 展开更多
关键词 Youth Injury prevention training Coach education Movement competency
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Stroke Coach方案对中青年脑卒中患者知识、态度水平及自我管理行为的影响
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作者 叶俏慧 黄丽华 +6 位作者 许燕飞 潘菁菁 裘露丹 陈忠美 陈志芬 周文姬 余丹妮 《浙江临床医学》 2023年第10期1550-1552,共3页
目的探讨Stroke Coach方案对中青年脑卒中患者知识、态度水平及自我管理行为的影响。方法选取入组患者70例,对照组采用常规护理干预,观察组在对照组的基础上增加Stroke Coach方案,两组患者干预前后均采用脑卒中患者知识、态度问卷及脑... 目的探讨Stroke Coach方案对中青年脑卒中患者知识、态度水平及自我管理行为的影响。方法选取入组患者70例,对照组采用常规护理干预,观察组在对照组的基础上增加Stroke Coach方案,两组患者干预前后均采用脑卒中患者知识、态度问卷及脑卒中患者自我管理行为评定量表进行评估。结果观察组干预后SKAQ知识总分、态度总分显著优于对照组(P<0.05)。两组患者SKAQ得分的组间效应(F=34382.385)、组内效应(F=618.395)、交互效应(F=230.936)具有统计学意义(P<0.05)。观察组干预后的自我管理总分及各维度(除社交管理和情绪管理外)得分与对照组比较差异有统计学意义(P<0.05)。两组患者自我管理行为得分的组间效应(F=44735.998)、组内效应(F=375.364)、交互效应(F=114.458)具有统计学意义(P<0.05)。结论Stroke Coach方案可提高中青年脑卒中患者的知识、态度水平及自我管理行为,但对社交管理和情绪管理作用不明显。 展开更多
关键词 STROKE COACH 脑卒中 中青年 危险因素
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基于E-Coach慢性病管理理论的健康信念宣教对门诊糖尿病患者的护理效果 被引量:4
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作者 张莉 唐莉莉 +1 位作者 郭曼丽 蔡敏 《护理实践与研究》 2023年第11期1660-1664,共5页
目的探讨E-Coach慢病管理理论下健康信念宣教护理在糖尿病门诊患者中的应用效果。方法选取医院门诊2021年7—11月就诊的糖尿病患者100例为对照组,选取2021年7月—2022年4月就诊的糖尿病患者100例为观察组。对照组实施常规健康宣教,观察... 目的探讨E-Coach慢病管理理论下健康信念宣教护理在糖尿病门诊患者中的应用效果。方法选取医院门诊2021年7—11月就诊的糖尿病患者100例为对照组,选取2021年7月—2022年4月就诊的糖尿病患者100例为观察组。对照组实施常规健康宣教,观察组实施E—Coach慢性病管理理论下健康信念宣教,对比分析两组患者血糖指标、自我管理行为及不良事件发生率。结果干预前,两组患者血糖三项指标HbA1c、FBG、2 hPBG、健康行为(SD-SCA-6)各维度得分相比,差异无统计学意义(P>0.05)。干预3个月后,观察组患者血糖三项指标均有所改善,观察组改善情况优于对照组,差异有统计学意义(P<0.05);观察组SD-SCA-6除吸烟维度得分降低,其他各维度即血糖监测、饮食管理、运动管理、足部护理、用药管理得分均提高,组间差异均有统计学意义(P<0.05);观察组患者低血糖、高渗性昏迷、酮症酸中毒、再入院不良事件总发生率低于对照组,但差异无统计学意义(P>0.05)。结论对糖尿病患者实施E—Coach慢性病管理理论下健康信念宣教,可改善患者自我管理行为,有效控制血糖水平。 展开更多
关键词 糖尿病 门诊患者 E—Coach慢病管理 健康信念 血糖指标水平 自我管理行为 不良事件
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Teaching Practice Communities in Higher Education:Roles and Strategies
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作者 HU Chun-xiao 《Sino-US English Teaching》 2023年第3期97-100,共4页
In view of the problem of lacking peer coaching among college teachers,taking teachers in local universities in Hangzhou as the research subject,the paper analyzes the relationship between peer coaching and teachers’... In view of the problem of lacking peer coaching among college teachers,taking teachers in local universities in Hangzhou as the research subject,the paper analyzes the relationship between peer coaching and teachers’professional development.The paper then proposes to establish teaching practice communities in higher education,which is of great significance to improve the teaching quality and promote the professional development of university teachers.Strategies for constructing teaching practice communities are also discussed. 展开更多
关键词 teachers’professional development peer coaching teaching practice communities constructing strategies
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The use of health coaching in controlling blood pressure of hypertensive patients in the family:literature review
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作者 Ayunda Puteri Rizanti Tantut Susanto Fahruddin Kurdi 《Nursing Communications》 2023年第8期1-5,共5页
Background:Family is an essential element in caring for clients with hypertension.Appropriate hypertension management can reduce health risks during the treatment.Health coaching in family is a critical intervention t... Background:Family is an essential element in caring for clients with hypertension.Appropriate hypertension management can reduce health risks during the treatment.Health coaching in family is a critical intervention to control and manage hypertension through providing education,information,and skills intervention are needed to support lifestyle improvements,manage chronic conditions,and prevent complications of hypertension.This literature study describes health coaching for controlling blood pressure among clients with hypertension in the family.Methods:Narrative literature review was performed to select the article that relates to health coaching of hypertension in the family using search engines including PubMed,ProQuest,SpringerLink,ScienceDirect,and Google Scholar by using keywords health coaching,family,hypertension,and blood pressure.The analysis of articles was carried out using four stages based on the PRISMA flowchart diagram.Results:The results indicated eight articles that were analyzed in this study.Interactive health coaching interventions based on a healthy lifestyle carried out with patients and families effectively improve medication adherence and reduce systolic and diastolic blood pressure.Meanwhile,health coaching applied regarding the principles including motivation,discussion,interviews and goal setting to influence behavior change and self-management.Conclusions:That health coaching applied for families with clients with hypertension is effect on reducing blood pressure and other changes,including knowledge,self-efficacy,and behavior towards health services for patients with hypertension.Therefore,health coaching for the family could be used as a family intervention for clients with hypertension during home health care. 展开更多
关键词 health coaching FAMILY HYPERTENSION blood pressure
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基于行为安全的COACH模型与实践研究 被引量:1
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作者 王雨 吴运逸 孙法强 《中国安全生产科学技术》 CAS CSCD 北大核心 2015年第4期153-157,共5页
基于行为安全理论的研究现状和应用实践的困境,提出了COACH模型,该模型在常规BBS基础上,更加强调对观察记录的跟踪和对观察者的控制与管理。在四川某企业开展了为期一年的应用实践,结果表明,该模型能够给出一套与业绩直接挂钩的管理体系... 基于行为安全理论的研究现状和应用实践的困境,提出了COACH模型,该模型在常规BBS基础上,更加强调对观察记录的跟踪和对观察者的控制与管理。在四川某企业开展了为期一年的应用实践,结果表明,该模型能够给出一套与业绩直接挂钩的管理体系,可以较好地解决常规BBS存在的问题。从问卷测量的结果来看,模型实施后,员工对企业的安全工作的认同得分从实施前的3.15分提高到3.97分,安全认同度得到较快的提高。 展开更多
关键词 行为安全 BBS 不安全行为 COACH模型
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轻奢品牌Coach定位与平衡战略分析 被引量:1
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作者 赵俏姿 童志方 +1 位作者 金栖桐 俞佳 《中国市场》 2015年第23期108-109,112,共3页
品牌营销的精髓在于品牌的定位和平衡。文章以Coach从国内品牌成长为国际品牌,以及其在中国的成功营销为案例,分析国际品牌定位与平衡战略。品牌定位的关键在于理念的陈述、市场的细分和4PS策略,品牌的力量在于平衡,即关于产品性能优势... 品牌营销的精髓在于品牌的定位和平衡。文章以Coach从国内品牌成长为国际品牌,以及其在中国的成功营销为案例,分析国际品牌定位与平衡战略。品牌定位的关键在于理念的陈述、市场的细分和4PS策略,品牌的力量在于平衡,即关于产品性能优势、卓越运营与顾客契合度的平衡。本篇论文为国际品牌营销提供了理论与实战的案例分析。 展开更多
关键词 国际品牌 品牌定位 品牌平衡 4PS市场细分 轻奢品牌Coach
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美国田径期刊编辑工作特点分析——以《Track Coach》为视角
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作者 刘国辉 司虎克 《体育科研》 2011年第4期100-103,共4页
对美国《Track Coach》的两位编辑Jess Jarver、Russ Ebbet的工作特点、内容进行了分析与研究。Jess Jarver主要负责国内外田径情报的搜集和梳理;Russ Ebbet负责访谈田径教练员、运动员,通过访谈这一开放性平台为教练员、运动员、田径... 对美国《Track Coach》的两位编辑Jess Jarver、Russ Ebbet的工作特点、内容进行了分析与研究。Jess Jarver主要负责国内外田径情报的搜集和梳理;Russ Ebbet负责访谈田径教练员、运动员,通过访谈这一开放性平台为教练员、运动员、田径管理层以及科研人员提供有价值的信息。 展开更多
关键词 美国 期刊 《Track Coach》 田径 编辑
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COACH教学引导法对学生学习动力和自主学习能力分析研究——以宁职院物流专业课堂教学为例
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作者 王顺林 陈一芳 《物流科技》 2015年第12期43-45,共3页
文章以三三COACH教学引导法作为课堂教学改革的手段,论述了90后学生的心理特点,企业用人需求变化和高职院校培养学生核心定位的变化。在此基础上,剖析了学生学习动力与刺激的逻辑关系,认为有必要强化学生的刺激环境,使其将学习作为优先... 文章以三三COACH教学引导法作为课堂教学改革的手段,论述了90后学生的心理特点,企业用人需求变化和高职院校培养学生核心定位的变化。在此基础上,剖析了学生学习动力与刺激的逻辑关系,认为有必要强化学生的刺激环境,使其将学习作为优先主导目标,进而表现出更为积极性的学习动力。研究以宁职院物流管理专业三个年级的课程课堂教学为例,分析了采用COACH教学引导法带来的学生学习动力变化,以及采用课堂组织形式和课程评价方式的改革带来的学生自主学习能力的改善。 展开更多
关键词 COACH教学引导法 学习动力 自主学习能力 课堂教学
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COACH技术在大学生“创新创业”教育中的可行性研究
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作者 曾碧 颉静 《陕西学前师范学院学报》 2017年第5期58-61,共4页
COACH技术通常是指通过发人深省和富有想象力的对话过程最大限度地激发个人的天赋潜能和职业潜力的活动。结合大学生双创的现实,COACH技术强调对创业潜质的唤醒,使用教练的有效对话技术在创业目标中澄清,利用COACH架构技术在"创新... COACH技术通常是指通过发人深省和富有想象力的对话过程最大限度地激发个人的天赋潜能和职业潜力的活动。结合大学生双创的现实,COACH技术强调对创业潜质的唤醒,使用教练的有效对话技术在创业目标中澄清,利用COACH架构技术在"创新创业"决策中有效推动,应用COACH技术创新"双创"课堂教学方法。 展开更多
关键词 COACH技术 创新创业 可行性
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Coach Simplified Structure Modeling and Optimization Study Based on the PBM Method 被引量:2
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作者 ZHANG Miaoli REN Jindong +1 位作者 YIN Ying DU Jian 《Chinese Journal of Mechanical Engineering》 SCIE EI CAS CSCD 2016年第5期1010-1018,共9页
For the coach industry, rapid modeling and efficient optimization methods are desirable for structure modeling and optimization based on simplified structures, especially for use early in the concept phase and with ca... For the coach industry, rapid modeling and efficient optimization methods are desirable for structure modeling and optimization based on simplified structures, especially for use early in the concept phase and with capabilities of accurately expressing the mechanical properties of structure and with flexible section forms. However, the present dimension-based methods cannot easily meet these requirements. To achieve these goals, the property-based modeling (PBM) beam modeling method is studied based on the PBM theory and in conjunction with the characteristics of coach structure of taking beam as the main component. For a beam component of concrete length, its mechanical characteristics are primarily affected by the section properties. Four section parameters are adopted to describe the mechanical properties of a beam, including the section area, the principal moments of inertia about the two principal axles, and the torsion constant of the section. Based on the equivalent stiffness strategy, expressions for the above section parameters are derived, and the PBM beam element is implemented in HyperMesh software. A case is realized using this method, in which the structure of a passenger coach is simplified. The model precision is validated by comparing the basic performance of the total structure with that of the original structure, including the bending and torsion stiffness and the first-order bending and torsional modal frequencies. Sensitivity analysis is conducted to choose design variables. The optimal Latin hypercube experiment design is adopted to sample the test points, and polynomial response surfaces are used to fit these points. To improve the bending and torsion stiffness and the first-order torsional frequency and taking the allowable maximum stresses of the braking and left turning conditions as constraints, the multi-objective optimization of the structure is conducted using the NSGA-II genetic algorithm on the ISIGHT platform. The result of the Pareto solution set is acquired, and the selection strategy of the final solution is discussed. The case study demonstrates that the mechanical performances of the structure can be well-modeled and simulated by PBM beam. Because of the merits of fewer parameters and convenience of use, this method is suitable to be applied in the concept stage. Another merit is that the optimization results are the requirements for the mechanical performance of the beam section instead of those of the shape and dimensions, bringing flexibility to the succeeding design. 展开更多
关键词 COACH STRUCTURE property-based modeling (PBM) SIMPLIFICATION MODELING multi-objective optimization
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