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      • Enjoyment Factor of Experienced Taekwondo Performers' on Satisfaction and Training Persistence Intention

        ( Jung-gyeon Bae ),( Hyang-kil Lee ),( Hee-jung Kim ) 국제태권도학회 2017 International Symposium for Taekwondo Studies Vol.2017 No.-

        Purpose: Unique ideas and emotions emerge during Taekwondo practice, which makes Taekwondo a representative cultural brand. Currently, Taekwondo organizations continue to revitalize Taekwondo performances as a new cultural product that surpasses its current status as a sport. The purpose of this study is therefore to investigate the influence of the enjoyment factors on the satisfaction and persistence intention of Taekwondo performers in Taekwondo performances, to identify the actual conditions and problems of Taekwondo performances, and to increase the satisfaction of Taekwondo performers. Methods: The subjects of this study were university Taekwondo demonstration teams from Seoul City, Uiwang City, Gyeonggi Province, and Jeolla Province in Korea as well as the Kukkiwon Taekwondo Demonstration Team. Data were processed using frequency analysis, exploratory factor analysis, reliability analysis, correlation analysis, and multiple regression analysis with SPSS 22.0. Results: First, it was found that Taekwondo performers’ interest factor had a significant effect on all factors of satisfaction. In addition, social factors had a significant effect on the social side of satisfaction, which is a sub-factor of satisfaction, and the recognition factor had a significant effect on the leader side of satisfaction. The health factor, which is a sub-factor of enjoyment, did not have a significant effect on satisfaction. Second, Taekwondo performers’ social aspect, institutional aspect, and leader’s side of satisfaction showed significant influence on the persistent intention, and the educational aspect had no significant effect on the persistent intention. Conclusions: Therefore, positive emotions, such as enjoyment in participating Taekwondo performances, are the key factors in determining the satisfaction of participation in Taekwondo performance and the intention to continue training. It is important to create conditions that can induce interest and pleasure by inducing participation in Taekwondo performance participation. In order to do this, it is necessary to create a physical environment that provides encouragement of the leader, supportive guidance, provision of training programs, and content that can induce the interest, psychological stability, and comfort of the trainees.

      • Graphene interlayer for current spreading enhancement by engineering of barrier height in GaN-based light-emitting diodes.

        Min, Jung-Hong,Son, Myungwoo,Bae, Si-Young,Lee, Jun-Yeob,Yun, Joosun,Maeng, Min-Jae,Kwon, Dae-Gyeon,Park, Yongsup,Shim, Jong-In,Ham, Moon-Ho,Lee, Dong-Seon Optical Society of America 2014 Optics express Vol.22 No.suppl4

        <P>Pristine graphene and a graphene interlayer inserted between indium tin oxide (ITO) and p-GaN have been analyzed and compared with ITO, which is a typical current spreading layer in lateral GaN LEDs. Beyond a certain current injection, the pristine graphene current spreading layer (CSL) malfunctioned due to Joule heat that originated from the high sheet resistance and low work function of the CSL. However, by combining the graphene and the ITO to improve the sheet resistance, it was found to be possible to solve the malfunctioning phenomenon. Moreover, the light output power of an LED with a graphene interlayer was stronger than that of an LED using ITO or graphene CSL. We were able to identify that the improvement originated from the enhanced current spreading by inspecting the contact and conducting the simulation.</P>

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