Disruptive silence: deepening experiential learning in the absence of technology     

Carol A. Smith  Rodney Parks  Jesse Parrish  Ryan Swirski 《Journal of Adventure Education & Outdoor Learning》2018,18(1):1-14

Technology plays an integral role in the lives of the majority of the US population. As technology becomes integrated into young people’s lives, questions arise regarding its effects on learning. This exploratory study draws on interviews with students who attend university in the United States to determine how separating students from technology deepens experiential learning. Participants were interviewed following a study abroad course to New Zealand, during which they were disconnected from technologies such as cell phones, the Internet and social media. In the interviews, students discussed their feelings of being disconnected and describe how disconnecting impacted their overall experience. Participants agreed that disconnecting from technology had positive effects on experiential learning and the global experience. Major themes that emerged include students’ enhanced immersion and engagement, the value of disconnection in providing opportunities for personal growth and the difficulty of initial separation from technology as a result of conditioning.  相似文献   

改善户式中央空调系统热稳定性的设计实例分析     

林火生 《柳州职业技术学院学报》2011,11(4):66-70

在分析户式中央空调系统热稳定性影响因素的基础上,给出了改善系统稳定性的设计措施,并结合一个别墅户式中央空调系统设计实例,从系统热稳定性的角度进行了设计分析,还指出了改善户式中央空调变频机组系统热稳定性的其他措施,为设计舒适、节能的户式中央空调系统提供参考。  相似文献   

功能性训练:释义与应用   总被引：10，自引：0，他引：10  

李丹阳  胡法信  胡鑫 《山东体育学院学报》2011,27(10):71-76

功能训练起源于康复领域,在有效性得到证实后逐步渗透到竞技体育领域,成为体能训练的重要方法。近年来,我国教练员试图将功能性训练用于竞技体育训练,遇到理论上的困惑。研究功能性训练的科学背景、概念界定和内涵、功能训练原则,理清功能性训练和传统训练,功能性训练和核心训练的关系,为我国现代体能训练方法体系科学化奠定基础。  相似文献   

Validity and reliability of a linear positional transducer across commonly practised resistance training exercises     

Harry F. Dorrell  Joseph M. Moore  Mark F. Smith  Thomas I. Gee 《Journal of sports sciences》2019,37(1):67-73

This study investigated the validity and reliability of the GymAware PowerTool (GPT). Thirteen resistance trained participants completed three visits, consisting of three repetitions of free-weight back squat, bench press, deadlift (80% one repetition maximum), and countermovement jump. Bar displacement, peak and mean velocity, peak and mean force, and jump height were calculated using the GPT, a three-dimensional motion capture system (Motion Analysis Corporation; 150 Hz), and a force plate (Kistler; 1500 Hz). Least products regression were used to compare agreeability between devices. A within-trial one-way ANOVA, typical error (TE; %), and smallest worthwhile change (SWC) were used to assess reliability. Regression analysis resulted in R² values of >0.85 for all variables excluding deadlift mean velocity (R² = 0.54–0.69). Significant differences were observed between visits 3-2 for bench press bar displacement (0.395 ± 0.055 m; 0.383 ± 0.053 m), and deadlift bar displacement (0.557 ± 0.034 m; 0.568 ± 0.034 m). No other significant differences were found. Low to moderate TE (0.6–8.8%) were found for all variables, with SWC ranging 1.7–7.4%. The data provides evidence that the GPT can be used to measure kinetic and kinematic outputs, however, care should be taken when monitoring deadlift performance.  相似文献   

Kinematic analysis of the drag flick in field hockey     

Rony Ibrahim  Gert S. Faber  Jaap H. van Dieën 《Sports biomechanics / International Society of Biomechanics in Sports》2017,16(1):45-57

Attaining high speed of the stick head and consequently of the ball is essential for successful performance of the drag flick in field hockey, but the coordination pattern used to maximise stick head speed is unknown. The kinematics of the drag flick was studied in ten elite hockey players who performed twenty shots each towards a target located 1.5 m high. A 150 Hz active marker motion analysis system was used, alongside two force plates to detect foot touchdown. Angular velocity and contribution to stick endpoint speed of upper body joints were analysed. Repeated measures ANOVA was used to compare timing of onset and peak angular velocities between joints. Participants used a kinematic pattern that was close to a proximal-to-distal sequence. Trunk axial rotation and lateral rotation towards the target, right wrist flexion and left wrist extension were the main contributors to stick endpoint speed. Coaches should emphasise trunk rotations and wrist flexion and extension movements for maximising stick head speed. Given the high level of the participants in this study, the coordination of joints motions, as reported here, can serve as a guideline for drag flick training.  相似文献   

优秀运动员竞技心理障碍分析及对策探讨     

彭亦兵 《体育科技文献通报》2008,16(10):1-2,12

采取文献检索和调查访谈等方法分析了优秀运动员竞技心理素质的重要性、竞技心理障碍的表现及成因,探讨了排除竞技心理障碍的对策。  相似文献   

超强度想象理论在竞技体育运动中的作用及应用     

郑纪磊  王凯  魏有江 《体育科技文献通报》2008,16(4):30-31

竞技运动员在比赛之前,往往会出现赛前紧张状态、赛前淡漠状态以及赛前盲目自信状态。通过对超强度想象理论的提出和研究,试图通过超强度想象消除竞技运动员的不良赛前状态,以至于达到最佳战斗准备状态。  相似文献   

关于图书馆建筑节能的研究与实践   总被引：10，自引：0，他引：10  

潘向泷 《图书馆论坛》2007,27(3):147-149

节能是现代社会对图书馆建筑的要求，也是图书馆自身生存和发展的必然要求。空调系统、照明系统、窗墙比等是图书馆建筑节能设计的关键；设计师、业主对建筑节能的认知和重视程度也是重要影响因素。  相似文献   

足球运动员高原训练科学化探索   总被引：3，自引：0，他引：3  

孙文新  侯会生  胡宇 《北京体育大学学报》2007,30(6):855-857

高原训练作为适应高原比赛和提高平原比赛体能的一种训练方法已逐步地融人足球的科学化训练实践之中,但尚未成熟理论和实践体系.笔者通过对高原训练基本原理的研究,并结合多年足球训练的实践经验,探讨高原训练对足球运动员的影响及足球运动员高原训练的科学化安排,以期为我国足球运动员高原训练实践提供理论依据.  相似文献   

汽车空调鼓风机常见故障的检修研究     

巫尚荣  邓岐杏 《大众科技》2015,(6)

文章介绍汽车空调鼓风机的功用、常见故障以及各种控制电路等,研究各种不同控制电路的类型提出相应的诊断程序、检修方法步骤,并举出相应的实际故障例子进行检修分析和研究,有效地提高了汽车空调鼓风机常见故障的检修效率。  相似文献