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한상모(Sangmo Han),박용남(Yongnam Park) 한국스포츠교육학회 2023 한국스포츠교육학회지 Vol.30 No.3
본고는 놀이의 성질에 대한 탐색을 바탕으로 놀이와 교육의 관계를 정립해 본 뒤, 초등체육의 놀이화 현상에 대해 비판적으로 검토하는 것을 목적으로 한다. 이를 위하여 Huizinga, Caillois, Gadamer, Dearden, Dewey, Freinet의 문헌에서 드러난 놀이의 개념을 살피고 놀이와 교육의 관계를 탐색하였다. 놀이와 교육은 격리성과 한계성의 접점을 가진다. 놀이에 매료되게 만드는 요소인 자율성·자발성·내재적 동기·즐거움·긴장감·몰입은 교육의 성공을 위한 중요한 단서가 될 수 있다. 그러나 놀이는 참여의 자유가 보장되고 비생산적인 특징이 있지만, 교육은 참여자의 성장에 초점을 둔다는 점에서 서로 다르다. 따라서 최근 초등학교에서 횡행하는 놀이체육 현상을 경계할 필요성이 있다. 놀이체육은 일회성과 고립성으로 인해 체육 교과를 대체할 수 없다. 이에 본고에서는 놀이의 교육적 활용을 위한 방안을 개발과 실행의 측면으로 제시하였다. 놀이에서 교육적 가치를 찾는 일은 놀이 그 자체에 주목하는 것이 아니라 참여자를 매혹하는 은밀한 속성을 파악하는 데에서 시작되어야 한다. 이러한 논의는 초등체육을 활성화하기 위해 놀이의 개념을 합리적으로 적용하는데 도움이 될 것이다. This paper aims to explore the relationship between play and education based on an examination of the nature of play and critically examine the phenomenon of playification in elementary physical education. To achieve this, the perspectives on play from Huizinga, Caillois, Gadamer, Dearden, Dewey, and Freinet were examined, and the connection between play and education was explored. Play and education share common aspects of autonomy, spontaneity, intrinsic motivation, enjoyment, tension, and immersion, which can serve as important indicators for educational success. However, play and education differ in terms of the freedom of participation and the non-productive nature of play, as education focuses on the participants growth. Therefore, it is necessary to be cautious of the prevalent trend of play-based physical education in elementary schools. Play-based physical education cannot be replaced by its one-time and isolated nature. Therefore, this paper proposes approaches for the educational utilization of play, focusing on the aspects of development and implementation. Discovering the educational value in play should commence not by focusing on play itself, but by identifying the covert attributes that captivate the participants. These discussions will contribute to a rational application of the concept of play in order to enhance elementary physical education.
응축 열전달계수 예측을 통한 이종 습윤성을 갖는 액막 채널 표면의 최적설계 및 열전달 성능평가
최영현(Younghyun Choi),한태양(Taeyang Han),정재영(Jaeyoung Jeong),이용남(Yongnam Lee),조항진(HangJin Jo) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
Condensation heat transfer, a heat transfer mechanism utilizing the latent heat, has used in various industrial applications due to its high heat transfer performance. In the case of the dropwise condensation (DWC), the condensate can be quickly removed, so the condensing surface can be exposed to the vapor effectively. This characteristic of DWC is the reason that it has a higher heat transfer coefficient than filmwise condensation (FWC). However, DWC has limitations in use at various applications (e.g. high temperature & pressure) due to the durability issue of the hydrophobic coating layer. To overcome this limitation, at previous study, surface had been developed to enhance heat transfer performance without the hydrophobic coating layer (i.e. water film channeled surface). In this study, prediction of the heat transfer coefficient was carried out to derive the optimal design of this water film channeled surface proposed to increase the heat transfer performance without hydrophobic coating, and heat transfer performance evaluation was performed at pure vapor condition.
응축 열전달계수 예측을 통한 이종 습윤성을 갖는 액막 채널 표면의 최적설계 및 열전달 성능평가
최영현(Younghyun Choi),한태양(Taeyang Han),정재영(Jaeyoung Jeong),이용남(Yongnam Lee),조항진(HangJin Jo) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
Condensation heat transfer, a heat transfer mechanism utilizing the latent heat, has used in various industrial applications due to its high heat transfer performance. In the case of the dropwise condensation (DWC), the condensate can be quickly removed, so the condensing surface can be exposed to the vapor effectively. This characteristic of DWC is the reason that it has a higher heat transfer coefficient than filmwise condensation (FWC). However, DWC has limitations in use at various applications (e.g. high temperature & pressure) due to the durability issue of the hydrophobic coating layer. To overcome this limitation, at previous study, surface had been developed to enhance heat transfer performance without the hydrophobic coating layer (i.e. water film channeled surface). In this study, prediction of the heat transfer coefficient was carried out to derive the optimal design of this water film channeled surface proposed to increase the heat transfer performance without hydrophobic coating, and heat transfer performance evaluation was performed at pure vapor condition.
LPG 직분사 엔진의 다운사이징 효과 및 시동성 개선을 위한 연료 제어시스템 최적화에 관한 연구
임종석(Jongsuk Lim),김도완(Dowan Kim),박한용(Hanyong Park),송진오(Jinoh Song),한정환(Junghwan Han),육철수(Chulsoo Yook),박성민(Seongmin Park),신용남(Yongnam Shin) 한국자동차공학회 2016 한국 자동차공학회논문집 Vol.24 No.6
The new 1.4 L turbocharged LPG direct injection (T-LPDI) engine is presented in this paper to improve the fuel efficiency of the vehicles installed with the 2.0 L LPG port fuel injection (LPI) engine, while maintaining the performance as a downsizing concept for the new engine platform development. Firstly, the return type high pressure LPG fuel supply system is designed and mounted in the new 1.4 L T-LPDI engine. As a result, this new engine shows a much better WOT performance and approximately 8 % of improved fuel economy level, as compared to the 2.0 L LPI vehicle. Secondly, the LPDI engine specific optimized design for high pressure fuel components and fuel injection control strategies are proposed and evaluated in order to overcome the restartability problem in a heat-soaked condition called the vapor lock phenomenon. Consequently, these experimental results illustrate a great potential for the developed 1.4 L T-LPDI engine as a possible substitute for the 2.0 L LPI engine.