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      • 풍력발전기 화재에 관한 실험적 연구

        김기덕,최익한 한국화재조사학회 2016 한국화재조사학회 학술대회 Vol.2016 No.10

        본 논문에서는 2010년 11월 2일 03시 02분경 발생한 인천시 옹진군 영흥면 소재 영흥화력 본부 풍력발전기에서 발생한 화재사고 등 국내에서 발생한 풍력발전기 관련 화재사고에 대한 원인을 분석하고, 시사점에 따른 대책을 제시하였다. 풍력발전기의 구조적 화재 위험요소를 연구하고, 풍력발전기와 자동차에서 주로 사용되어지 는 디스크 브레이크의 마찰열에 대한 발화 가능성을 중심으로 재현실험을 실시하여, 세계적인 증가 추세에 있는 풍력발전시설과 자동차 디스크브레이크의 향후 화재조사 분석 자료로서의 활 용과 더불어 화재원인조사의 전문화에 기여하고자 한다.

      • KCI등재

        고려 팔관회에 담긴 고려시대의 특성-현재적 계승과 관련하여-

        김기덕,한정수 한국중세사학회 2015 한국중세사연구 Vol.0 No.42

        As Benedetto Croce said, 'all history has a character of contemporary history’. But if this contemporary history has some preconceived view about the past history, it cannot reflect a right historical image. For example, the Joseon Dynasty very different in the historic image was succeeded to from the Goryeo Dynasty like Korea. And if the influence of the Joseon Dynasty has lasted up to the present, specialists as well as the masses have pointed out that there could be a limit in the understandings of the present interest and the situation. Seeing that the family, historical consciousness, cultural herittage and even the capital location of the Joseon Dynasty is consistent with those of the current Korea, contemporary Koreans have a very great affinity with the Joseon Dynasty in general. Moreover, it can be said that discontinuity with the mood of the former times is very great for each of the kingdoms on the Korean peninsula had a longer reigning period of more than 500 years compared to kingdoms in Europe. In this sense, it is thought that contemporary Koreans have a poor knowledge of the historical image of the Goryeo Dynasty and are little interested in it. It can be said that the contemporary-history meaning of history formed based on this historical understanding has some given limitation. Among other things, the method of overcoming this problem would be to throw abundant light on the positive historical image of the Goryeo Dynasty in an objective way. This study attempted to shed light on the meaning of Palgwanhoe in the Goryeo Dynasty having the emperor kingdom, diversity, openness and festivity and to track the meaning of contemporary succession to it. In addition, it pointed out some points for the contemporary succession of the tradition. They include the viewpoint of long-term persistence of the Korean kingdom, the reinterpretation of the Confucian culture, the application of digital humanities, the importance of ceremonies and the so on. It is hoped that this study will contribute to the recreation of the tradition from this perspective.

      • KCI등재

        고려시대 江都 宮闕의 풍수지리적 고찰

        김기덕 한국중세사학회 2011 한국중세사연구 Vol.0 No.31

        This text is about Feng Shui of Ganghwa palace in comparison with Gaeseong palace in Goryeo Dynasty. Though relocation of the Capital to Ganghwa was an urgent decision, geographical conditions of Ganghwa palace were very similar to those of Gaeseong palace. It is fairly similar in that a White tiger is continued to make a Crimson phoenix. The White tiger in Ganghwa is strong though, it has a trivial flaw of being wide open while the White tiger in Gaeseong is embracing. Rather the Green dragon in Ganghwa is embracing the palace better than that in Gaeseong. Upon relocation of the capital, its construction was modeled on Gaeseong palace. Gujueong·palace·Buddhist temple were named after those in Gaeseong. And Palkwan·Yeondeung were all done according to old Buddhist rituals. Such a Feng Shui capital was chosen with traditional Feng Shui knowledge, and possibly with the pilot survey by the rulelr Choi U. And for Joun and military purposes, the necessity of a site not far from the seaside also might have affected the location of Ganghwa palace. From Feng Sui view point, Feng Shui of Ganghwa palace would be estimated as one key that enabled a good defence against Mongol invasions. This text is about Feng Shui of Ganghwa palace in comparison with Gaeseong palace in Goryeo Dynasty. Though relocation of the Capital to Ganghwa was an urgent decision, geographical conditions of Ganghwa palace were very similar to those of Gaeseong palace. It is fairly similar in that a White tiger is continued to make a Crimson phoenix. The White tiger in Ganghwa is strong though, it has a trivial flaw of being wide open while the White tiger in Gaeseong is embracing. Rather the Green dragon in Ganghwa is embracing the palace better than that in Gaeseong. Upon relocation of the capital, its construction was modeled on Gaeseong palace. Gujueong·palace·Buddhist temple were named after those in Gaeseong. And Palkwan·Yeondeung were all done according to old Buddhist rituals. Such a Feng Shui capital was chosen with traditional Feng Shui knowledge, and possibly with the pilot survey by the rulelr Choi U. And for Joun and military purposes, the necessity of a site not far from the seaside also might have affected the location of Ganghwa palace. From Feng Sui view point, Feng Shui of Ganghwa palace would be estimated as one key that enabled a good defence against Mongol invasions.

      • 태양전지 모델을 고려한 고고도용 무인기의 최소시간 상승궤적 설계 연구

        김기덕,문건희,박현주,최의환,윤남경,전병주,안재명,방효충,탁민제 한국항공우주학회 2015 한국항공우주학회 학술발표회 논문집 Vol.2015 No.11

        본 논문에서는 고고도용 무인기의 최소시간 상승궤적 설계 문제를 다룬다. 본 연구에서 고려한 고고도용 무인기는 태양에너지를 동력원으로 고도 15km 이상 상승함을 목표로 가정하였다. 따라서 태양전지 모델링을 수행하여 이를 고려하는 것이 중요하다. 또한 대류권 상층의 강한 제트 기류대를 통과해야 하므로 바람에 대한 모델링을 고려하는 것 또한 매우 중요하다. 본 연구에서는 태양전지 모델 및 바람 모델과 함께 비행 공역 제한 조건을 동시에 고려한 상승궤적을 설계하였다. 궤적 생성을 위한 운동방정식으로는 3자유도 질점 모델을 사용하였으며 상용 툴인 GPOPS2를 이용하여 최소시간 궤적을 생성하였다. This paper designs minimum time ascending trajectory of high altitude UAV. High altitude UAV which is consider in this study is assumed to be the target altitude over 15km and it uses a solar energy as a power source. Therefore, it is important to take this account by performing a solar cell modeling. Also, it is very important to consider the model of the jet stream because it passes through the strong jet stream in upper troposphere. At the same time, in this study flight area constraints are taking into account to design an ascending trajectory with solar cell and jet stream modeling. Trajectories are generated using a commercially available tool GPOPS2 and point-mass three degree of freedom model is used.

      • KCI등재

        고려 태조 왕건의 대구 달성군 역사문화콘텐츠화 전략 -오스트리아 뒤른슈타인 소재 ‘사자왕 리처드’ 역사콘텐츠 구축사례를 중심으로-

        김기덕,배상준 한국중세사학회 2018 한국중세사연구 Vol.0 No.52

        In perambulating Europe in July, 2017, I have visited the historical site of the old castle of ‘Richard the Lionheart’ located in the hill behind the village of Dürnstein in the vicinity of Vien in Austria. The episode of the English king Richard the Lionheart, who was the hero of the 3rd Crusades and caught, incarcerated in the old castle of Dürnstein and disimprisoned by the Austrian duke on the way back to his country, is the historically famous affair. But the simple structures of diverse figures surrounding Richard the Lionheart as well as him on the way up the old castle were exhibited in a simple and diverse way. In considering the strategy of Dalseong-gun Daegu for historical and cultural contents of Taejo Wanggeon in the Goryeo Dynasty, this study attempted to analyze the case of Richard the Lionheart and get implications for it. First of all, it explained the historical site related to Richard the Lionheart by dividing it into (1) the structures related to his incarceration, (2) the structures related to the 3rd Crusades and (3) the structures related to its application of the subsequent generation in a broad sense. This study elicited the following implications through this case study: First, the mountain path of one kilometer up the old castle from the end of the village was naturally used. The structures were set up without any encumbrance by using one end of the mountain path, and the bench was put beside the structures in places for people to take a rest if needed. There was no mountain cut or no terrain specially touched to set up this structure constructed along this mountain path. Second, the material of the structure was very cheap and simple. The pictorial object was made of metal material and then painted in colors, and explained on the bottom or on the side both in German and in English. It can be realized from this that efforts were really made to use the least material and cost. The size of the structure was not so large as that of man., and so I felt comfortable in appreciating it. It was thought to be the very desirable plan when contrasting with the case of setting up the large structure with material requiring many costs to a burdensome extent often in case of the utilization project. Third, there was an explanation method of each structure. It did never present an answer but chose the method of the relevant figures explicating their ideas. This makes the open mind possible, which is thought to be desirable. And in explaining the specific social aspect such as the medieval society or the Crusades, it attempted to describe it an accurate fact though it might be concise. Fourth, myths and legends were much borrowed in explaining each structure, which is greatly suggestive. Efforts to contain such accurate historical facts as possible but make proper use of myths and legends if needed would help enhance the historical imagination. Fifth, each structure detailedly makes clear about the application of those related to Richard the Lionheart by the subsequent generation. That is, it presented the example of its application in films, literary works or music. When application is commonly mentioned, people tend to think it to be the project requiring many costs or processing the historical fact thoughtlessly. It is thought that the case of Richard the Lionheart has great implications for the strategy of Dalseong-gun Daegu for historical and cultural contents of Taejo Wanggeon in the Goryeo Dynasty who can be said to be a great hero comparable to Richard the Lionheart in this sense.

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