1950년대 이용찬의 작가 의식과 형식 실험 연구

이승현(Lee, Seung-hyun) 한국어문학회 2013 語文學 Vol.0 No.121

Lee Young-chan is well known by his drama Gajok(the Family). He focused on a family and it’s difficulties. He believed that family’s difficulties could are solved by family’s affection. However, his idea of family has a huge problem. It is that his concept of family is based on the patriarchy and the anti-communism. Due to the patriarchy, women who have become others appear from his dramas, so Lee Young-chan’s idea of family can not be completed perfectly. Futhermore, his idea of family is linked with idea of nation and people. Lee Young-chan said that people work for nation not only their families. This his idea is involved in the anti-communism. In the 1950s, the anti-communism is ideology of nation in Korean. At that time, the president Lee Seung-man used the anti-communism to catch state authority. Consequently, Lee Young-chan did not have the different author consciousness from old generation authors. Therefore, his formal experiments from Gajok, Giro, and Pineun Bamedo Jaji Anneunda have limited value. His formal experiments can not express the new generation consciousness, but they can be utilized to overcome the limits of Realism’s time and space.

분리형 부재 옹벽 설계 프로그램 개발

이승현,윤찬영,Lee. Seung-Hyun,Yune. Chan-Young 한국방재학회 2011 한국방재학회논문집 Vol.11 No.5

본 연구에서는 지압형 보강재를 갖는 분리형 부재 옹벽의 설계에 있어 검토해야 할 세부 검토항목을 살펴보고 설계 프로그램을 개발하였다. 분리형 부재 옹벽의 설계시 세부 설계내용은 외적 안정성 검토, 내적 안정성 검토 그리고 국부적 안정성 검토의 세 가지로 대별할 수 있다. 설계 프로그램에 반영된 외적 안정성 검토는 통상적인 옹벽에 대한 검토와 큰 차이는 없다. 내적 안정성 검토에서 고려해야 할 보강재의 인장파괴에 대한 검토와 인발에 대한 검토 세부 사항을 살펴보았고 국부적 안정성 검토에서 고려해야 할 보강재와 전면부재 사이의 연결강도에 대한 검토와 전면부재의 접촉면 사이의 전단강도에 관련한 벌징(bulging)에 대한 검토 세부 사항을 살펴보고 이를 개발된 프로그램에 구현하였다. 또한, 설계 예를 제시하여 입력자료와 검토결과를 나타냄으로써 개발된 프로그램의 이해를 증진시키고자 하였다. In this study, detailed design requirements for segmental retaining wall (SRW) which were concerned with external stability, internal stability, and local stability were investigated and a computer program for designing the SRW was developed as well. There are little differences in the estimation of the external stability between the algorithm of the developed program and the conventional method for the design of the SRW. Methods for accounting tension failure and pullout of the reinforcement were incorporated in the developed program, which were essentials in the internal stability. Methods for accounting the connection strength between a reinforcement and a facing block and for accounting the bulging concerned with the shear strength of the interface between two blocks were also incorporated in the developed program, which are essentials in the local stability. Design example run by the developed program is presented in order to enhance the knowledge of the developed program.

건성안이 있는 이식편대숙주질환에서 사이클로스포린 A 점안치료 후 장기간의 경과관찰

이승현,임성규,우제문,윤경철,Seung Hyun Lee,Seoung Kyu Im,Je-Moon Woo,Kyung Chul Yoon 대한안과학회 2009 대한안과학회지 Vol.50 No.1

Purpose: This study was performed to evaluate the long-term effect of 0.05% cyclosporine A emulsion (Restasis, Allergan Inc. USA.) on dry eye associated with graft-versus-host disease (GVHD). Methods: Sixteen eyes of 8 patients with severe dry eye associated with GVHD were treated with 0.05% cyclosporine A emulsion twice a day. Tear film parameters were evaluated before treatment and after 1, 3, 6, and 12 months of treatment. Results: One month after treatment, tear break-up time improved from 3.88±1.78 s to 4.17±1.90 s (P=0.02). Three months after treatment, symptom score and basal secretion improved from 3.00±0.38 and 4.44±1.59 mm to 2.33±0.52 (P=0.04) and 5.42±2.50 mm (P=0.04), respectively. Twelve months after treatment, the keratoepitheliopathy score improved from 2.38±1.31 to 1.13±0.35 (P=0.02). Conclusions: Use of a 0.05% cyclosporine A emulsion is effective for dry eye associated with GVHD as it helps to increase tear secretion and to relieve symptoms. Treatment with 0.05% cyclosporine A emulsion for longer than 1 year may be necessary to improve keratoepitheliopathy.

테마파크를 실감미디어 개발을 통해 구현하였을 때 발전 가능성 - 소외 공간을 중점으로 탐구

이승현,Lee, Seung-Hyun 국제문화기술진흥원 2022 The Journal of the Convergence on Culture Technolo Vol.8 No.6

As the theme of a theme park space with limited space emerged as a keyword, many experiments and research were conducted in the field. In the domestic market, not only the creation of new spaces, but also the need to develop marginalized spaces and seek complementary points through new interpretations of actual spaces, but they show physical limitations. This study newly redefined and analyzed the concept of space by approaching and interpreting virtual space as a new space. By exploring real-world examples and analyzing the results, we also derive the results that the possibility of realistic media in the virtual world is an exemplary alternative to complementing the expansion and limitations of the space. Realistic media has a wide range of content provision in selective development such as AR and VR, and the theme park's characteristic of providing various contents for quarterly concepts even if the development budget and time are small, which has a significant impact on the development of realistic media. Currently, theme parks are attracting countless majors and officials related to realistic media through metaverse. As it is attracting attention in such a new market, we look forward to seeing a lot of research and experiments in the project.

진동타입말뚝의 해석기법 개발 및 평가

이승현,장인성,Lee. Seung Hyun,Jang. In Sung 한국방재학회 2013 한국방재학회논문집 Vol.13 No.6

진동타입기에 의해 시공되는 말뚝의 해석을 위한 해석기법을 개발하고 해석기법의 신뢰성을 평가해보기 위해 시스템변수를 달리하여 해석을 수행하였다. 말뚝의 동적 주면마찰 하중전이곡선을 결정짓는 부주면마찰력의 크기는 정적 연직하중이 작용하지 않는 경우에 대한 해석을 통해 시행착오적으로 구할 수 있을 것으로 생각된다. 진동타입기에 의해 시공되는 말뚝의 연직변위량은 정적 연직하중의 크기에 비례하는 결과를 보였다. 진동타입시 말뚝의 가속도는 부주면 마찰력 및 정적 연직하중과는 무관하며 기진력의 크기에 의존함을 알 수 있었다. 정적 연직하중의 증가에 따른 말뚝주면 하중전이곡선의 변화양상을 비교해 볼 때 진폭은 거의 일정하나 곡선이 전체적으로 상향으로 이동함을 알 수 있었다. 말뚝선단 하중전이곡선에 대하여 최대 하중값은 부주면 마찰력 및 정적 연직하중의 크기와 무관하게 일정함을 알 수 있었다. Technique for analyzing a pile installed by vibratory pile driver was developed and analyses were performed with varying system variables in order to evaluate reliability of the developed technique. Negative skin friction which defines dynamic skin load transfer curve seems to be obtained by trial and error method for the situation without static vertical load. Vertical displacment of the pile was proportional to the static vertical load. It can be seen acceleration of the pile was dependent on excitation force regardless of the negative skin friction and the static vertical load. Comparing the shapes of skin load transfer curves with static vertical load, amplitudes of the curves were nearly the same but it can be seen that the curves shift to upward. Maximum values of the toe load transfer curves were constant regardless of the negative skin friction and the static vertical load.

RF 스퍼터 증착과 후속 열처리에 의한 Na_0.6WO₃ 박막의 상형성 거동과 전기전도 특성

이승현,선호정,Lee, Seung-Hyun,Sun, Ho-Jung 한국전기전자재료학회 2014 전기전자재료학회논문지 Vol.27 No.8

Thin films of cubic $Na_{0.6}WO_3$, which is one of the sodium tungsten bronze, were fabricated by rf sputtering for the electrode applications in integrated sensors and actuators. A single-phase cubic $Na_{0.6}WO_3$ sputtering target of power type was prepared by conventional solid-state reaction. Thin films were deposited from the powder target, and the as-deposited films were amorphous, thus they annealed by tube furnace or RTP for crystallization. Thin films having cubic phase $Na_xWO_3$ were fabricated by the optimization of sputtering and post-annealing conditions, but single-phase cubic $Na_{0.6}WO_3$ thin films were not obtained. Although the films were not in single phase, they had good electrical conduction properties showing electrical resistivities of $10-4{\Omega}{\cdot}cm$ order.

흙-못치기 공법을 적용한 사면의 거동 비교

이승현,Lee. Seung-Hyun 한국방재학회 2011 한국방재학회논문집 Vol.11 No.4

흙-못치기 공법을 적용한 사면에 대해 법면을 숏크리트로 처리한 사면과 프리캐스트 콘크리트 전면판을 적용한 사면의 경우로 나누어 실물 현장시험이 수행되었다. 현장시험결과 얻은 하중-침하곡선을 비교해 볼 때 전면판을 적용한 경우 하중지지능력이 우수함을 알 수 있었다. 현장시험시 재하판에 가해진 총하중에 대해 재하판의 침하양상은 전면판을 적용한 경우 연성기초가 모래지반에 놓이는 경우와 같은 침하분포를 보인다. 숏크리트를 적용한 경우, 재하판의 침하량은 유사한 총하중 수준에서 전면판을 적용한 침하량에 비해 크고 부등침하의 경향도 크다. 전면판 적용시 보강면에 설치한 하중계에 의한 하중분포와 변형률계에 의한 계측결과, 재하판의 침하양상 그리고 경사계에 의한 수평변위양상을 종합적으로 고려해 볼 때 전면판을 적용할 경우 숏크리트를 적용할 때보다 국부적인 변위를 억제하고 보다 넓은 보강면에 하중을 분산시키는 것으로 생각된다. Full scale field load tests were conducted on two kinds of slopes reinforced with soil nail. One of the two slope is the slope with surface treated by shotcrete. The other slope has a surface placed by precast concrete panel. By comparing load-settlement curves, load bearing capacity for the case of pecast concrete panel was bigger than that for the case of shotcrete. Settlemet distribution of loading plate for the case of precast concrete panel was similar to that for the case in which flexible footing lies on sand. Settlement for the case of shotcrete was bigger than that for the case of the precast concrete panel and also was the differential settlement. By considering overall the test data of all the measurements related with load cell, strain gauge, settlement of loading plate and inclinometer, precast concrete panel has the advantage of load sharing in larger area and restriction of local displacement to the shotcrete treated case.

양성자 치료 시 방사선 작업 종사자에게 미치는 방사선 피폭에 대한 평가

이승현,장요종,김태윤,정도형,최계숙,Lee, Seung-Hyun,Jang, Yo-Jong,Kim, Tae-Yoon,Jeong, Do-Hyung,Choi, Gye-Suk 대한방사선치료학회 2012 대한방사선치료학회지 Vol.24 No.2

목 적: 기존의 광자선을 이용한 선형가속기와는 달리, 양성자 치료의 경우 물질과의 상호작용으로 발생되는 중성자를 비롯한 여러 핵종 등으로 인해 다량의 이차방사선이 생성되기 때문에 방사선 작업 종사자의 피폭은 더욱 주의 깊은 관심이 필요하다. 이에 방사선 측정 시에 널리 이용되고 있는 열형광선량계를 이용하여 방사선 작업 종사자의 피폭정도를 평가하고 이를 토대로 양성자 치료 시 방사선 피폭선량에 관한 기초 자료를 제시하고자 한다. 대상 및 방법: 본원의 양성자 치료실에서 근무한 방사선 작업 종사자를 대상으로 열형광선량계 뱃지를 이용해 피폭현황을 측정한 데이터를 비교했다. 양성자의 빔 라인 주변에서 발생하는 이차방사선의 신체부위별 피폭선량 분포를 알아보고자 신체부위(외안각, 목, 유두점, 배꼽, 등, 손목)에 가로, 세로가 각각 3 mm인 정사각형 모양의 열형광선량계를 부착하여 일일 8시간의 근무시간동안 유지하도록 하였고 총 80시간 측정하여 평균 데이터를 얻었다. 그리고 치료실 내 공간적인 방사선량의 분포를 보기 위하여 빔 사출구, PPS (Patient Positioning System), Pendant, 차폐체보관장, DIPS (Digital Image Positioning System) Console, 출입통로에 각각 열형광선랑계를 부착하고 일일 근무시간 동안의 평균 방사선량을 측정하였다. 결 과: 방사선 작업 종사자의 열형광선량계 뱃지로 측정된 피폭량을 조사한 결과 분기별 평균 0.174 mSv, 연평균 0.543 mSv로 나타났고 신체부위별로 측정한 결과에서 가장 많은 피폭량을 보인 곳은 목이였으며 가장 적은 피폭량을 보인 곳은 등(양견갑골 상각을 이은 선의 중간 지점)으로 나타났다. 작업 동선에 따른 공간적 방사선량을 알아본 결과에서는 빔 사출구 근처에서 상대적으로 높게 나타났고 거리가 멀어짐에 따라 줄어들었다. 결 론: 적은 양의 피폭일지라도 동일 장소에서 장기 근무하게 되면 피폭 누적량은 증가할 수밖에 없고 특정 부위의 누적량은 건강상의 위험을 가져다 줄 수도 있다. 그러므로 국제 방사선 방어 위원회가 권고하는 ALARA의 원칙에 따라 가능한 합리적으로 감소시킬 수 있도록 스스로 개인별 피폭관리에 철저를 기하고 피폭을 최소화시키는데 최선의 노력을 다해야 할 것이다. Purpose: Unlike the existing linear accelerator with photon, proton therapy produces a number of second radiation due to the kinds of nuclide including neutron that is produced from the interaction with matter, and more attention must be paid on the exposure level of radiation workers for this reason. Therefore, thermoluminescence dosimeter (TLD) that is being widely used to measure radiation was utilized to analyze the exposure level of the radiation workers and propose a basic data about the radiation exposure level during the proton therapy. Materials and Methods: The subjects were radiation workers who worked at the proton therapy center of National Cancer Center and TLD Badge was used to compare the measured data of exposure level. In order to check the dispersion of exposure dose on body parts from the second radiation coming out surrounding the beam line of proton, TLD (width and length: 3 mm each) was attached to on the body spots (lateral canthi, neck, nipples, umbilicus, back, wrists) and retained them for 8 working hours, and the average data was obtained after measuring them for 80 hours. Moreover, in order to look into the dispersion of spatial exposure in the treatment room, TLD was attached on the snout, PPS (Patient Positioning System), Pendant, block closet, DIPS (Digital Image Positioning System), Console, doors and measured its exposure dose level during the working hours per day. Results: As a result of measuring exposure level of TLD Badge of radiation workers, quarterly average was 0.174 mSv, yearly average was 0.543 mSv, and after measuring the exposure level of body spots, it showed that the highest exposed body spot was neck and the lowest exposed body spot was back (the middle point of a line connecting both scapula superior angles). Investigation into the spatial exposure according to the workers' movement revealed that the exposure level was highest near the snout and as the distance becomes distant, it went lower. Conclusion: Even a small amount of exposure will eventually increase cumulative dose and exposure dose on a specific body part can bring health risks if one works in a same location for a long period. Therefore, radiation workers must thoroughly manage exposure dose and try their best to minimize it according to ALARA (As Low As Reasonably Achievable) as the International Commission on Radiological Protection (ICRP) recommends.

장족지굴근판을 이용한 하지 원위부 결손의 치험례

이승현,이혜경,조필동,Lee, Seung-Hyun,Lee, Hye-Kyung,Cho, Pil-Dong 대한성형외과학회 2010 Archives of Plastic Surgery Vol.37 No.6

Purpose: Reconstruction of soft tissue defects in the distal lower leg, especially in the distal third, largely depends on free tissue transfer and local fasciocutaneous flaps. But several local muscle flaps have also been proposed as useful alternative reconstructive manner. In this report, the authors present the successful use of the flexor digitorum longus muscle flaps in the distal lower leg reconstruction. Methods: Case 1: An 81-year-old woman with a dog bite wound in the left distal lower leg was admitted. She had a $10{\times}8\;cm$ wound with tibial exposure along the medial aspect of the leg. Soft tissue reconstruction with a flexor digitorum longus muscle flap and a split-thickness skin graft was performed. Case 2: A 77-year-old woman had a squamous cell carcinoma in the right distal lower leg. After wide excision, a $5{\times}4\;cm$ wound was developed with exposure of the tibia. The flexor digitorum longus muscle flap was transposed and covered with a split-thickness skin graft. Results: The flexor digitorum longus muscle flaps were shown to be useful to cover tibial defects in the distal lower leg. During the follow-up period, no significant donor site morbidity was found. Conclusion: The flexor digitorum longus muscle flap can be used to cover the exposed distal tibia, especially when a free tissue transfer is not an option. The relative ease of dissection and minimal functional deficits were the major advantages of this flap, while the extent of reach into the lower third has a limitation.

CLAM 에이전트 기반 Directory Facilitator를 위한 효율적인 서비스 디스커버리 프로토콜 구현

이승현,신동렬,장경수,Lee, Seung-Hyun,Shin, Dong-Ryeol,Jang, Kyung-Soo 한국인터넷방송통신학회 2011 한국인터넷방송통신학회 논문지 Vol.11 No.6

현재, UPnP, Jini, SLP와 같은 서비스 디스커버리 프로토콜은 서비스의 표현과 기술, 그리고 메시지 교환 패턴과 같은 기본적인 서비스 디스커버리 기능만 제공한다. 이것은 서비스 디스커버리 프로토콜 사이에 서비스의 상호운영성을 저해하는 요소로 작용한다. 따라서, 본 논문에서는 이기종 서비스간의 상호운영성을 높일 수 있도록 CLAM (Component-based Autonomic Layered Middleware) 에이전트 플랫폼을 구성하고, 플랫폼 내의 DF (Directory Facilitator)의 기능을 확장하여 효율적인 서비스가 가능하도록 DF 에이전트를 설계하고 구현한다. 또한 DF 에이전트에서 확장성과 상호운영성을 보장하기 위해 DHT-Chord 알고리즘을 이용한 효율적인 서비스 디스커버리 메커니즘을 제안한다. Current service discovery protocols such as UPnP, Jini, SLP provide the basic function which is message exchange pattern, service representation and description, in service discovery. They does not guarantee service interoperability among service discovery. Therefore, in this paper, we design and implement CLAM (Component-based Autonomic Layered Middleware) agent platform to enable an efficient service discovery through extension of DF agent function in FIPA-compliant specification. Also, we propose an efficient service discovery mechanism using DHT-Chord algorithm to guarantee scalability and interoperability in DF agent.