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      • 한일검도 변천사에 따른 본질성 연구

        최근기 한국스포츠리서치 2003 한국 스포츠 리서치 Vol.14 No.6

        Japan interchanged the art of the kumdo historically each other with Korea. We went via long history and we had a art, religio, sports and developed. The change of the training form led to the confusion of the accumulation with the change of the swordsmanship for a long time. We kumdo the true nature through Korea and Japan art history. The first, The swordsmanship of Korea was handed down at the Japan. The art of the kumdo of Japan came next into Korea. Korea art could not recover the tradition after the restoration of independence. We received Japan art as it is and reached today. The secon, Japan and similar sports art of the kumdo have been achieved the art of the kumdo of Korea The tradition art to be composing also of a society physical education link is Old art of the kumdo. We have the meaning even though we revive old art of the kumdo. The third, Korea and true nature of the kumdo of Japan even though it wins itself through the training. We stay at the power of strong thing to win ourselves and heart. We enlarge the power of the heart with our body and pursue also the personality formation. We must realize the reason of the nature through the trainin Therefore there are we even though we establish straight ingangoan. Also there are we as the principle of the peace to love the nature with the human even though we consist the self realization.

      • KCI등재

        항공기 충돌에 대한 사장교의 구조거동 평가: 수치해석적 접근

        최근기,이정휘,정철헌,안동우,윤재용,Choi, Keunki,Lee, Jungwhee,Chung, Chul-Hun,An, Dongwoo,Yoon, Jaeyong 한국전산구조공학회 2021 한국전산구조공학회논문집 Vol.34 No.3

        장교는 공공성이 매우 높은 사회기반시설물로 운용 중 안전성 확보가 필수적이며, 붕괴 또는 파손 시 신속한 대처가 필요하다. 사장교의 붕괴 또는 파손을 야기시킬 수 있는 원인은 크게 자연재난과 사회재난으로 분류할 수 있다. 이 중 사회재난에 속하는 충돌사고는 차량이 교량 하부구조인 교각에 충돌하는 사고, 항공기의 결함으로 인한 추락사고 등이 있을 것이며, 해상교량의 경우 주탑 하단에서의 선박 충돌사고가 있을 것이다. 본 연구에서는 수치해석적 접근법을 기반으로 항공기 충돌에 대한 사장교의 구조거동을 평가하는 절차를 제안하고, 충돌해석을 수행하여 절차의 타당성을 보였다. 제안된 절차에는 1) 적절한 항공기 충돌 시나리오 설정, 2) 사장교의 복잡한 거동 메커니즘을 고려한 구조 모델링, 3) 충돌해석을 통한 구조거동 평가가 포함된다. 해석 결과, 본 연구에서 설정한 시나리오는 대상 교량에 큰 영향을 미치지 못하는 것으로 나타났지만, 향후 다양한 시나리오를 통한 충돌해석을 수행한다면 교량에 심각한 손상을 일으키는 하중 위치 및 임계 하중 수준을 결정할 수 있을 것으로 판단한다. 본 연구에서 수행한 충돌해석 절차를 바탕으로 사장교에서 발생하는 항공기 충돌에 대한 간접적인 평가가 가능할 것으로 기대된다. Cable-stayed bridges are infrastructure facilities of a highly public nature; therefore, it is essential to ensure operational safety and prompt response in the event of a collapse or damage caused by natural and social disasters. Among social disasters, impact accidents can occur in bridges when a vehicle collides with a pier or when crashes occur due to aircraft defects. In the case of offshore bridges, ship collisions will occur at the bottom of the pylon. In this research, a procedure to evaluate the structural behavior of a cable-stayed bridge for aircraft impact is suggested based on a numerical analysis approach, and the feasibility of the procedure is demonstrated by performing an example assessment. The suggested procedure includes 1) setting up suitable aircraft impact hazard scenarios, 2) structural modeling considering the complex behavior mechanisms of cable-stayed bridges, and 3) structural behavior evaluation of cable-stayed bridges using numerical impact simulation. It was observed that the scenario set in this study did not significantly affect the target bridge. However, if impact analysis is performed through various scenarios in the future, the load position and critical load level to cause serious damage to the bridge could be identified. The scenario-based assessment process employed in this study is expected to facilitate the evaluation of bridge structures under aircraft impact in both existing bridges and future designs.

      • KCI등재

        지반경계조건이 프리캐스트 아치구조물의 폭발저항성능 평가에 미치는 영향

        이정휘,최근기,김동석 한국전산구조공학회 2019 한국전산구조공학회논문집 Vol.32 No.5

        In this study, the effect of ground boundary conditions on the evaluation of blast resistance performance of precast arch structures was evaluated by a numerical analysis method. Two types of boundary conditions, namely, fixed boundary conditions and a perfectly matched layer (PML) were applied to numerical models. Blast loads that were much higher than the design load of the target structure were applied to compare the effects of the boundary conditions. The distribution and path of the ground explosion pressure, structural displacement, fracture of concrete, stress of concrete, and reinforcing bars were compared according to the ground boundary condition settings. As a result, the reflecting pressure shock wave at the ground boundaries could be effectively eliminated using PML elements; furthermore, the displacement of the foundation was reduced. However, no distinct difference could be observed in the overall structural behavior including the fracture and stress of the concrete and rebar. Therefore, when blast simulations are performed in the design of protective structures, it is rational to apply the fixed boundary condition on the ground boundaries as conservative design results can be achieved with relatively short computation times. 본 논문에서는 지반경계조건의 설정이 프리캐스트 아치구조물의 폭발저항성능 평가에 미치는 영향을 수치해석적 기법을 사용하여 파악하고자 하였다. 지반경계조건은 고정조건과 PML(perfectly matcher layer)을 이용한 경계조건의 두 가지로 적용하였으며, 폭발하중은 대상 구조물의 설계하중보다 큰 하중을 사용하여 경계조건의 영향을 명확히 비교할 수 있도록 하였다. 폭발압력의 분포 및 경로, 구조물에 발생하는 변위, 콘크리트의 파쇄여부, 콘크리트 및 철근의 응력을 비교․분석하였으며, PML을 적용하였을 때 지반 경계면에서 발생하는 반사파를 효과적으로 제거할 수 있음을 확인하였다. 또한, 이로 인해 구조물 기초부의 변위가 감소하는 것으로 나타났다. 하지만, 콘크리트의 파쇄여부, 콘크리트 및 철근에 발생하는 응력을 포함한 전반적인 구조물의 거동에는 뚜렷한 차이가 발생하지 않았다. 따라서 방호시설의 설계를 목적으로 폭발시뮬레이션을 수행하는 경우에는 지반경계조건에 고정조건을 적용하였을 때 안전측의 결과를 얻을 수 있으며, 해석시간이 단축되는 이점도 있으므로 이러한 면을 종합적으로 고려하여 지반경계조건을 고정조건으로 적용하는 것이 합리적이라고 판단된다.

      • 운동선수들의 영양 섭취와 체중조절에 관한 이론적 연구

        윤오남,서영환,최근기 조선대학교 스포츠과학연구소 2001 스포츠科學硏究 Vol.12 No.-

        For strength and competence of athletes, nutrition is the primary thing to be taken care of followed by the process of training. However, some athletes and coaches focus only on strength, techniques and reinforcement of mental strength whereas they do little care about nutrition. It is desirable that athletes should have a proper knowledge about nutrition, which can help proper training of weight control. To achieve the purpose within limited time, courses that provide training of nutrition and educational materials to increase educational effect should be developed. 1. Education about nutrition in our country is hardly available at schools except students of food and nutrition in universities. 2. People who are interested in weight control focuses on risks of health so that the consider what should be and necessity of weight control. 3. For enhancement of ㎈ory effectiveness, a small quantity of food intake several times per day is recommended for meals. 4. Athletes and coaches must have a full understanding of three performancerelated components such as carbohydrate, fat and protein among six essential nutrients : carbohydrates, fat, protein, vitamin, mineral and water. 5. Weight control through sauna may cause disorder is organism if it goes too far. 6. Coaches must provide regulations that weight control is performed through consistent training and more studies with experiments are necessary. 7. Tonic, vitamin tablets, ginseng, and pepper paste that have been considered to contribute to enhancement of competence have no significant and direct effect on competence. 8. For athletic competition, weight control by reducing body fat is recommended for athletes.

      • KCI등재

        체육사 : 택견과 태권도 역사성에 관한 비교

        김길평(KimGilPyeong),최근기(ChoeGeunGi) 한국체육학회 2003 한국체육학회지 Vol.42 No.5

        Taekkyon and Taekwondo is the nature occurrence martial arts which keeps a old history. When seeing history, supark, supark of play, subyeongta, subyeongchiki, kwon beoub, Taekkyon, Taekwondo it was developed with expediency. but 36 years between nayional japen by simultaneous suffering it reached standing. It is like that crisis of disappearance it hit, became the opportunity where the martial arts(dangsu, kongsu, karate) of the other nation is activated.The true identity frost of nature occurrence martial arts it brings the crisis against, it is a after national martial arts(1971), Taekkyon it is an expediency and an intangible cultural asset (1981), Taekkyon it was borne the result which is unhappy had become the dual anger which is a silk.From this time Taekkyon and Taekwondo the history frost of expediency the argument with is not cut. Is like that the research which it sees Taekkyon and Taekwondo after leading the history characteristic comparison of expediency with, arrived to same conclusion.three national policy units Taekkyon and Taekwondo it is an opinion regarding an expediency.Taekkyon and Taekwondo is su park with the root, the fact that it develops is fact. But Taekkyon the silk does not exist actually in three national policy units was not. Are like that three national policy righteousness martial arts become feed with the fact that the supark accomplishes a main current.Also, regarding the remains of ancient times Taekkyon and Taekwondo sees supporting which will reach feed which it will do as a favor is insufficient with expediency. The martial arts (Taekkyon and Taekwondo) until of josun national early stage marking does consequently with the suprk and must prevent a history cross.Taekkyon The silk must see as containing a martial arts function and a play function with martial arts and play.Taekkyon and Taekwondo is developed and old time period effect of trade name for it becomes feed with the fact that it goes mad. It is like that percentage where the form or principal is different fall there to be a history frost, must be interpreted from same connection. Must take a triangular position with the fact that in but Taekkyon intangible cultural asset (1981) designation of the silk with point of view it has become dual anger different martial arts.When Taekkyon and Taekwondo seeing with history characteristic of expediency, Taekwondo is expediency the old time period multi branch techniques were integrated. Taekkyon. The silk technical element considerable portion is excluded from like that process and the form or principal appears different with demobilization to be demanded, it became.Taekkyon and Taekwondo is demanded the evening twilight percentage necessity which integration will draw from future intention direction. With philosophy thought it joins in and the elder shape approach it leads and with it is soft principal it interchanges and feed with the fact that the conversion with desirable direction will be necessary it becomes.

      • KCI등재

        2019년 세계수영선수권대회 개최에 따른 지역주민인식 조사 연구

        서영환(Sea, Young-Hwan),최근기(Choi, Keun-Ki),이경록(Lee, Kyong-Rok),이지은(Lee, Ji-Eun),오정준(Oh, Jeong-Jun),김공(Kim, Kong) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.3

        This study, through the viewpoint that Gwangju Citizens had, analyzed regional inhabitant recognition in connection with 2019 World Swimming Championship opening and leaded to the conclusion as followings. As a result of analyzing regional inhabitant recognition in connection with 2019 World Swimming Championship opening, this study found out that it was classified with three types. Typel was analyzed to be ‘pursuit type of positive effect on society and economy’, type2 to be ‘pursuit type of negative effect on society and economy’, and type3 to be ‘pursuit type of two aspect (positive and negative) effect on society’. This study analyzed, centering on the common ground among three types. Conceming on regional inhabitants’ recognitions in connection with 2019 World Swimming Championship opening, this study found out that Gwangju citizens laid an emphasis on the recognition of economy, culture, and circumstance. But, they laid more emphasis on social aspect linked with World Swimming Championship. In common, they laid an emphasis on affirmative factor in the social aspect, but they didn’t recognize socially negative factors so much.

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