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RISS 인기검색어
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- 저자 : 李學周(Lee Hak-Ju) (검색결과 216 건)
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이학주,한승우,이상록,Lee, Hak-Ju,Han, Seung-U,Augagneur Sylvain,Lee, Sang-Rok 한국기계연구원 1997 硏究論文集 Vol.27 No.-
The bogie between the track and the railway vehicle body, is one of the most important component in railroad vehicle. Its effects on the safety of both passengers and vehicle itself, and on the overall performance of the vehicle such as riding quality, noise and vibration are critical. The bogie is mainly consisted of the bogie frame, suspensions, wheels and axles, braking system, and transmission system. The complex shapes of the bogie frame and the complicate loading condition (both static and dynamic) induced in real operation make it difficult to design the bogie frame fulfilling all the requirements. The complicated loads applied to the bogie frame are i) static load due to the weight of the vehicle and passengers, ii) quasi-static load due to the rolling in curves iii) dynamic load due to the relative motion between the track, bogie, and vehicle body. In designing the real bogie frame, fatigue analysis based on the above complicated loading conditions is a must. In this study, stress analysis of the bogie frame has been performed for the various loading conditions according to the UIC Code 6 15-4. Magnitudes of the stress amplitude and mean stress were estimated based on the stress analysis results to simulate the operating loads encountered in service. Fatigue strength of the bogie frame was evaluated by using the constant life diagram of the material. 3-D surface modelling, finite element meshing, and finite element analysis were performed by Pro-Engineer, MSC/PATRAN, and MSC/NASTRAN, respectively.
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Ad-hoc 네트워크에서 다중경로를 지원하는 ATP 프로토콜에 대한 연구
이학주,장재신,이종협,Lee, Hak-Ju,Jang, Jae-Shin,Lee, Jong-Hyup 한국시뮬레이션학회 2009 한국시뮬레이션학회 논문지 Vol.18 No.3
Wireless networks have several unique features : node mobility, restricted bandwidth, time-variable bandwidth, large latency, and high bit error rates time due to channel fading. These features at wireless networks intend to decrease the performance TCP protocols are used in wireless networks. Lots of studies have been done for finding appropriate wireless transport protocols for current wireless communications. However, related studies have not provided good performance or some protocols have a good performance only in specific circumstances. Thus, these are not suitable for general wireless circumstance. Therefore, we propose a new wireless transport protocol which provides better performance than the previous ones. And we'd like to solve a problem that previous protocols cannot maintain their connections even though they have multiple paths until another path is successfully set up. To solve these problems, a new protocol ATP-M is proposed which is designed on already known TCP-M and ATP protocols. With NS-2 computer simulation, it is shown that this newly proposed protocol has better system throughput than TCP, TCP-M and ATP protocols.
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이학주,채우규,박중성,김주용,김찬영,Lee, Hak-Ju,Chae, Woo-Kyu,Park, Jung-Sung,Kim, Ju-Yong,Kim, Chan-Young 한국조명전기설비학회 2011 조명·전기설비학회논문지 Vol.25 No.7
PCS(Power Conditioning System) is the necessary component in Microgrid, composed of multiple distributed generators and energy storage system. In this paper, the functions of PCS are defined and 10[kW] PCS for PV and BESS are developed. To apply PCSs to Microgrid, this paper presents a 3-phase inverter with the decoupling current controller, voltage controller and DPLL control system. PCSs were applied to 120[kW] pilot plant and its performance tests were carried out. Test results of PCS at each operation mode show stable in Microgrid.
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이학주(Lee Hak-Ju) 강원대학교 인문과학연구소 2017 인문과학연구 Vol.0 No.55
이 글은 〈용궁부연록〉을 중심으로 용궁이라는 시공이 어떻게 치료관광 스토리텔링의 전통이 되었으며, 치료관광 패러다임이 되는지를 고찰했다. 〈용궁부연록〉에서는 용궁 관련 스토리텔링의 궁극적 목적인 용궁마케팅의 전통을 이었다. 그 전통은 용궁관련 전기소설에서 보였던 구도와 일치했다. 용궁이 가지고 있는 전기소설의 이미지를 모두 함유하고 있으며, 그 이미지는 정의롭고 불합리가 없는 이상세계로 나타났다. 주인공은 용궁여행을 통해서 관광에서 추구하는 자기실현과 인간의 존엄성확보를 획득할 수 있었다. 치료관광스토리텔링의 패러다임 구상에서는 세 가지 입장에서 논의를 하였다. 첫째는 관광이 궁극적으로 추구하는 자기실현과 존엄성 확보를 치료관광스토리텔링에 적용하기 위한 방법을 살폈다. 둘째는 용궁이 갖는 자체 이미지가 환상과 신비감을 주는 것으로, 다양한 용 상징은 심리적인 치료관광스토리텔링의 장소성으로 바람직함을 살폈다. 셋째로〈용궁부연록〉을 치료관광스토리텔링의 구도에서 살폈다. 용궁관광을 통해서 주인공은 설화에서 보여주는 이미지에서 더 나아가 ‘자기실현, 인간의 존엄성 확보, 깨달음’을 한 것으로 나타났다. It researches the tradition and the paradigm of Healing Tourism Storytelling in the time-space of Sea God`s Palace in relation with 〈Tour to Banquet in Sea God`s Palace〉 〈Tour to Banquet in Sea God`s Palace〉 succeeds the tradition of Sea God`s Marketing which is the ultimate purpose of Storytelling. The practice accords the structure in the other fantasy novel about Sea God`s Palace. It has the image of Sea God`s Palace which revealed as a righteous and rational utopia. Its main character self-realizes and gets human dignity. It researches the paradigm of Healing Tourism Storytelling of the work in three ways. First, how to adapt the ultimate purpose of tourism of self-realization and human dignity to Healing Tourism Storytelling. Second, the Sea God`s Palace as a proper subject for psychological healing tourism storytelling with its fantasy and mystery. Lastly, the structure of psychological healing tourism storytelling in 〈Tour to Banquet in Sea God`s Palace〉 in which the character get self-realization, human dignity and awakening.
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李學周 ( Lee Hak-ju ) 세명대학교 지역문화연구소 2005 지역문화연구 Vol.4 No.-
Muhuje is originated from a person without offspring left his property to a collateral descendant, villager or town office to conduct his ancestral rites. It is not sure when Muhuje began. However it has been carried out across the country, especially here, in Gang won-Do(江原道), many places have performed it. On this, I had researched life rites(一生儀禮) in Gang won-Do for about 3years. While doing the research, I worked on Muhuje's aspect as well. From this research, I could find out that Muhuje has been practiced at lots of village in Gang wonDo. Before it, only few researches on Muhuje in one or two places had been done by some scholars superficially. Compare to our frequent and indirect experience about Muhuje from TV or newspaper. it hasn't been recognized as a very important ethnic customs. Thus, my research and study could be claimed as the world's first to reveal the real value to us. The following is the summary of my study. I researched it by the unit of person, village and town. In case of person, the heirless man's collateral relatives perform his ancestral feast on a certain day and also take care of the grave of the deceased. This is done by village or town unit as well. The man without offspring also left his property to them. Sometimes, Buddhist temple holds Muhuje. We can find the origin of Muhuje from a man who had property without offspring donated it to collateral relatives, village, town or school asking for his funeral and his ancestral feast. In the period of Japan occupation by force(日帝强占期), Japan forced people to do Muhuje in order to deprive their property. Because of it, It had practiced more than any other time in the history during that period. I can put the significance of Muhuje into three aspects. First, Muhuje has a character as a community's activity which brings strong ties for villager. Secondly, it gives a chance to look back upon Korean ancestral rites. Last, it also accomplish the function as a religion. It's prospect is quite bright and it is revealed from the actual state of Muhuje. In addition, due to the given condition of the time, it is easy to predict more people without offspring in the future. We need to succeed and stimulate it well. For this purpose, the government need to increase the budget for village and town and participate actively. Various advertisement also is required. Because it is one of our beautiful public morals.
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이학주 ( Lee Hak-ju ) 한국건축시공학회 2023 한국건축시공학회 학술발표대회 논문집 Vol.23 No.2
It is important to utilize an efficient quality management platform because the management of deadlines at construction sites requires rapid and accurate processing of numerous defect data in a short time. In this study, 30 domestic patents for defect management and image analysis were analyzed to examine the development status of quality management platforms using mobile devices. As a result of the analysis, research on automatically detecting defects using artificial intelligence has been actively underway in recent years, and advanced IT technologies have been converging in various ways into linked services.
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