어두워진 실상과 밝혀진 허상

이선영(Lee, Sun Young) 한국예술종합학교 미술원 조형연구소 2013 Visual Vol.10 No.-

이예린의 작품은 군더더기 없이 단순명료한 인터페이스를 가지고 있지만, 내포적 다양성이 풍부하다. 대표적인 사진 작품들은 그림자이긴 하지만, 물에 비친 그림자이기에 거울 같은 반영상이다. 거기에는 재현의 기원이 되는 그림자와 거울의 모델이 동시에 작동한다. 배수가 잘 안되어 하수구로 빠져나가지 못한 물이 고여 생긴 이 순간의 연못은 다른 세상을 담는 틀이 되었다. 현실과의 최소한의 접점을 가지는 상상세계는 회화에서 극대화되고, 드로잉에서는 추상적 요소들로 분해되어 있지만, 사진 작업에서는 절묘한 균형을 이룬다. 현실과 상상은 이원론으로 완전히 분리되어 있기 보다는, 뫼비우스 띠처럼 연결된다. 모태 예술이었던 음악은 무의식과 몸속에 깊숙이 자리하며, 음악뿐 아니라 미술에서도 여러 장르를 두루 섭렵해온 작품은 공共감각적이다. 이예린의 작품 속 허상simulacre은 현실과 닮은 그림자eikônes와 닮지 않은 그림자phantasma가 모두 존재한다. 작가는 미술이라는 우회로를 통해서 순수한 생성의 세계에 가 닿으려고 한다. The works of Ye leen Lee feature simple and clear interfaces, while they imply abundant diversity. Her representative photo works show mirror-like shadows reflected on the surface of the water, embodying the origin of representation with shadows and mirrors. The pond or puddle made of stagnating water that failed to drain becomes a frame for another world. In the works of Lee, the imaginary world having minimal contact points with the reality becomes maximized in paintings, gets disassembled into abstract elements in drawings, and creates a subtle balance in photographs. However, the reality and the imagination are not separated by dualism but connected like a Möbius strip. Since the artist learned music from inside her mother’s womb, music is deeply rooted in her unconsciousness as well as in her body. The works of Lee are synesthetic, for she has experimented with diverse genres of art besides music. The simulacrum in her works contains both eikônes that is close to the reality and phantasm that is far from the reality. Using art as a detour, the artist attempts to reach a pure world of creation.

스펀본드 부직포의 흡음성에 대한 구조적 요인 효과 연구

이선영,이지은,변태웅,이승구,Lee, Sun Young,Lee, Ji Eun,Byun, Tae Woong,Lee, Seung Goo 한국섬유공학회 2015 한국섬유공학회지 Vol.52 No.6

Nonwovens have been proposed as a sound absorber in applications of home interior textile industry for effective noise control. Honeycomb cell blind textiles have been increasingly used in window covering for noise reduction. In this study, the effect of structural parameters of honeycomb cell-structured spunbond nonwoven on the sound absorption property was investigated. Spunbond nonwovens with various thicknesses, areal densities, and porosities were used, and they were joined in the form of a honeycomb cell structure with various cell widths and cell layering. The sound absorption property of the nonwoven improved with increasing thickness. The porosity of the nonwoven was shown to be proportional to the noise reduction coefficient (NRC). An increased air gap between two layers of the nonwoven shifted the maximum sound absorption coefficient toward a lower frequency range. The honeycomb cell structure was confirmed to contribute to an improvement of the sound absorption property. Layering of the honeycomb cell structure was also shown to be a critical factor in controlling the sound absorption property of the nonwoven.

에틸렌옥사이드(Ethylene oxide)에 노출된 병원 근로자들의 소핵 빈도와 유전적 감수성 지표와의 연관성

이선영,김양지,최영주,이중원,이영현,신미연,김원,윤충식,김성균,정해원,Lee, Sun-Yeong,Kim, Yang-Jee,Choi, Young-Joo,Lee, Joong-Won,Lee, Young-Hyun,Shin, Mi-Yeon,Kim, Won,Yoon, Chung-Sik,Kim, Sung-Kyoon,Chung, Hai-Won 한국환경보건학회 2011 한국환경보건학회지 Vol.37 No.6

Objectives: Ethylene oxide (EtO) is classified as a human carcinogen, but EtO is still widely used to sterilize heat-sensitive materials in hospitals. Employees working around sterilizers are exposed to EtO after sterilization. The aim of the present study was to assess the exposure of EtO level, coupled with occupationally induced micronuclei from hospital workers. The influence of genetic polymorphisms of detoxifying genes (GSTT1 and GSTM1) and DNA repair genes (XRCC1 and XRCC3) on the frequencies of micronuclei in relation to exposure of EtO was also investigated. Methods: The study population was composed of 35 occupationally exposed workers to EtO, 18 student controls and 44 unexposed hospital controls in Korea. Exposure to EtO is measured by passive personal samplers. We analyzed the frequencies of micronuclei by performing cytokinesis-block micronucleus assay (CBMN assay) and GSTM1, GSTT1, XRCC1, and XRCC3 were also genotyped by performing polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results: The frequencies of micronuclei in EtO exposure group, student controls and hospital controls were $18.00{\pm}7.73$, $10.47{\pm}7.96$ and $13.86{\pm}6.35$ respectively and their differences were statistically significant, but no significant differences according to the level of EtO were observed. There was a dose-response relationship between the frequencies of micronuclei and cumulative dose of EtO, but no significantly differences were observed. We also investigated the influence of genetic polymorphisms (GSTM1, GSTT1, XRCC1, and XRCC3) on the frequencies of micronuclei, but there were no differences in the frequencies of micronuclei by genetic polymorphisms. Conclusions: The frequencies of micronuclei in EtO exposure group was significantly higher than control groups. A dose-response relationship was found between the level of EtO exposure and the frequencies of micronuclei, but no statistically differences were observed. We also found that the frequencies of micronuclei were increased according to cumulative EtO level. There was no association of the genetic GSTM1, GSTT1, XRCC1, and XRCC3 state with the frequency of micronuclei induced by EtO exposure.

저융점 폴리에스터와 텐셀을 이용한 싸이로필사의 제조와 물성 분석

이선영,유재정,홍윤광,이시우,이승구,Lee, Sun-Young,Yoo, Jae-Jung,Hong, Yun-Kwang,Lee, Si-Woo,Lee, Seung-Goo 한국섬유공학회 2012 한국섬유공학회지 Vol.49 No.2

The purposes of this study were to manufacture sirofil yarn using tencel roving and low melting polyester filaments and to analyze the physical properties of sirofil yarns with yarn count, in order to develop composite yarn for high glossy and luxury textile fabrics. The surface morphology of sirofil yarn was observed with the SEM. Tensile and bending properties of sirofil yarn were examined with the yarn count. The tensile fracture of sirofil yarn was shown with a two-step process. Firstly, tencel yarn having low elongation was broken and then the low melting polyester filaments were fractured with very high elongation. Bending properties of sirofil yarn were measured with the KES-FB. The bending rigidity of sirofil yarn was between that of tencel spun yarn and that of low melting polyester. Also, the surface property of sirofil yarn was evaluated in terms of the hairiness coefficient. It was shown that stress, strain, bending rigidity, bending hysteresis and surface hairiness coefficient of sirofil yarn decreased as yarn count increased.

유리 용해로 축열실 상재 하중 증가에 따른 Rider Arch의 안전성 검토

이선영,김종옥,임대영,김택남,박원규,Lee, Sun-Yung,Kim, Jong-Ock,Lim, Dae-Young,Kim, Taik-Nam,Park, Won-Kya 배재대학교 공학연구소 1997 공학논문집 Vol.2 No.1

유리용해로의 축열실은 폐연소가스로 열을저장하며, 유리용해로에 유입되는 흡입공기를 예열시키는 역할을 한다. 유리용해산업에서 연료소비를 줄이기 위하여 절연법, 단열벽돌, 공기누출등이 오래 연구되었다. 또한 새로운 형태의 단열벽돌과 Rider arch가 유리용해로의 수명연장을 위하여 연구되고 있다. 본 연구는 연구대상공장의 이전설치시 유리용해로의 축열실이 5.64m에서 7.89m로 높이가 높아졌고 이에 따른 축열실 하중증가에 의하여 Rider arch가 더 높은 응력을 받게 되었다. 이런 조건에서 Rider arch의 기계적 안정성을 본 연구에서 검토하였다. 계산식에 의하면 하중증가에 따른 Rider arch의 응력은 안정한 것으로 평가되었고 Rider arch가 견딜수 있는 최대 압축응력은 163kg/$cm^2$이고, 최대전단응력은 6.37kg/$cm^2$이다. The regenerator is important part of the glass melting furnace to increase the temperature of the intake air through the combustion flame. The insulation, checker brick, prevention of the air leak has been studied to decrease the fuel consumption in glass melting industries. Thus the new types of checker brick and the design of the rider arch has been studied to prolong the life of the glass melting furnace. The height of the regenerator increased from 5.64 m to 7.89 m in the reforming of the glass melting furnace. Thus the stability of the rider arch is studied under the condition of increased load of checker brick in this research. The rider arch was estimated to be stable inspite of the increase of load according to the calculation. The max. sustained compressive stress of the rider arch is 163 kg/$cm^2$ and the max. sustained shear stress is 6.37 kg/$cm^2$.

염화칼슘 처리농도가 가로변 지피식물의 생장에 미치는 영향

이선영,김원태,주진희,윤용한,Lee, Sun-Young,Kim, Won-Tae,Ju, Jin-Hee,Yoon, Yong-Han 한국조경학회 2013 韓國造景學會誌 Vol.41 No.4

본 연구는 가로변 지피식물을 중심으로 염화칼슘에 대한 내성과 피해양상을 파악하여 효율적인 가로변 지피식물 적용 및 관리 자료를 제시하고자 실시되었다. 실험구 조성은 염화칼슘 비율 대조구, 0.5%, 1.0%, 3.0%로 구분하여 일반상토 500g을 기준으로 고상처리 하였다. 식물재료로는 가로수 지피식물로 가능성이 있거나 사용되는 수호초, 옥잠화, 마삭줄, 순비기나무, 사철나무, 작살나무를 사용하였다. 결과를 정리하면 토양은 염화칼슘 농도처리에 따라 산도가 증가하였으며, 전기전도도는 지속적으로 감소하였고, 치환성 칼슘 함량은 처리 이후 증가하였으나 실험기간 중 감소하였다. 수호초, 마삭줄, 사철나무는 염화칼슘 비율 0.5%까지 생육 및 생존이 양호한 것으로 나타났다. 옥잠화, 순비기나무는 1.0%까지 생존이 가능한 것으로 나타났으며, 옥잠화는 식재 기반의 수분을 통한 염류의 이동이 가능한 조건에서 가로변의 지피식재로 적용이 가능할 것이라 판단되었다. 작살나무는 대조구를 제외한 염화칼슘 처리구에서 생육이 불량하고 개엽하지 않아 염화칼슘에 대한 민감성이 큰 것으로 나타났다. The purpose of this study was to provide information on management and apply it to a roadside ground cover plant understanding the capacity of calcium chloride in the plant. The experimental group was composed of the ratio control group of calcium chloride, 0.5%, 1.0%, and 3.0% in 500g of soil. Plant materials were selected and measured according to their ecological characteristics such as ground cover plant, Pachysandra terminalis, Hosta plantaginea, Trachelospermum asiaticum, Vitex rotundifolia, Euonymus japonica and Callicarpa japonica. The acidity of the amended soil was increased gradually depending on the treatment and conductivity was continually decreased. The EX-Ca increased after the treatment, but decreased in the middle of the experiment. Pachysandra terminalis, Trachelospermum asiaticum and Euonymus japonica were able to grow and survive at the ratio of 0.5%. Hosta plantaginea and Vitex rotundifolia were able to survive at the ratio of 1.0%. Hosta plantaginea, the possible state can absorb salts due to moisture and, can be applied to ground cover plants in the roadside. The growth and development of Callicarpa japonica was poor and the leaves were open to grow for calcium chloride treatment except the control group. It was concluded that Callicarpa japonica was very sensitive to calcium chloride.

조류제거를 위한 구리이온 발생 반응기의 특성 연구

이선영,김혜연,주재백,Lee, Sun-Young,Kim, Hae-Yon,Ju, Jeh-Beck 한국전기화학회 2012 한국전기화학회지 Vol.15 No.1

조류제거를 위한 구리이온을 생성하기 위한 환형 흐름 구리 전기분해 반응기 시스템을 구성하고 그 가동특성에 대하여 고찰하였다. 또한 구리이온이 조류에 미치는 영향도 살펴보았다. 인가전류를 증가하면 균등조로부터 배출되는 구리 이온 농도가 비례적으로 증가함을 알 수 있었다. 전류 밀도를 조절하여 원하는 구리농도를 얻을 수 있음을 알았으며 패러데이 효율은 90% 이상임을 알 수 있었다. 유량을 증가시키면 구리이온농도는 감소하였으며 이는 전극에서의 반응속도와는 상관없이 물의 증가량에 따른 희석 때문임을 알 수 있었으며 농도 과전위 영향은 미미하였다. pH가 증가할수록 생성되는 구리이온 농도는 이에 반비례하여 감소하였고 전기전도도의 변화는 배출되는 구리이온 농도에 별 영향을 미치지 않았다. 구리이온 농도가 증가시킬 경우 Chlorophyll-a 농도가 크게 감소함을 볼 수 있으며, 구리 이온 농도가 0.2 ppm 이상일 때 조류가 효과적으로 제거됨을 알 수 있다. 황산구리를 용해시킨 구리이온이나 전기분해를 통해 얻은 구리이온을 투여한 경우 별차이가 없었으며 5일 후 조류 제거효율은 0.4 ppm이상의 농도에서는 90%이상이었다. An annular flow type of copper electrolysis reactor was setup in order to generate the copper ions to remove algae in water. The operating characteristics of the reactor and the effect of copper ion on algae have been considered. By controling the applied current, the copper ion concentration could be obtained as desired level and the faradaic efficiency was above 90%. When the flow rate was increased, the copper ion concentration was linearly decreased due to the dilution effect and the effect of concentration overpotential was insignificant. With the increase of pH in water, the copper ion concentration was linearly decreased and not affected by the conductivity of the water. The concentration of chlorophyll-a was sharply decreased with the increase of copper ion concentration. The algae was effectively removed as the copper ion concentration was above 0.2 ppm. There was no difference between the copper ions obtained by dissolving copper sulfate and those produced by copper electrolysis. The algae removal efficiency was above 90% after 5 days as the copper ion concentration was above 0.4 ppm.

메밀 속성 장 프리믹스 제조 및 품질특성

이선영,안유진,김지연,송진,최혜선,Lee, Sun Young,Ahn, Yu Jin,Kim, Ji Yeon,Song, Jin,Choi, Hye-Sun 한국식품영양학회 2013 韓國食品營養學會誌 Vol.26 No.4

메밀 속성 장 프리믹스의 최적 조건을 확립하고자 품질특성을 조사하였다. 소금량(8, 10, 12%)에 따른 품질특성 결과, 대장균 군수는 소금량 10, 12%(21일), 8%(28일) 이후로 검출되지 않았으며, B. subtilis HJ18-4를 starter로 첨가한 군은 발효 7일부터 검출되지 않았다. 아미노태 질소 함량은 21일까지 급격히 증가하였으며, 그 후로 완만히 증가하였다. 그 결과, 소금 함량 10%, starter 첨가 시 보다 안전한 발효가 이루어졌다. 가수량(1:1, 1:1.5. 1:1.8)의 따른 품질특성 결과, 총균수와 아미노태 질소 함량은 가수량이 적을수록 높았으며, 1:1 혼합(35일)일 때 아미노태 질소 함량은 169.5mg%로 가장 높았고, 발효 28일 이후 대장균 군이 검출되지 않았다. 용기별(항아리, 유리, 플라스틱)의 품질특성 결과, 총균수와 아미노태 질소 함량은 유리 용기 대비 플라스틱과 항아리 용기가 높았으며, 대장균군도 보다 빨리 감소하였다. Batch size(1.25 kg, 2.5 kg)를 달리하여 제조된 메밀 속성 장의 품질특성 결과, 총균수와 아미노태 질소 함량은 batch size에 따른 큰 차이가 없었으며, 대장균 군 측정 결과, 14일째 2.5 kg($3.00{\times}10^2$ CFU/g), 1.25g ($1.25{\times}10^3$ CFU/g)으로 나타났다. 메밀 속성 장 프리믹스의 최적 조건은 가수량 1:1, 소금의 양 10%, B. subtilis HJ-18-4를 starter로 첨가, 항아리 및 플라스틱 용기는 3주, 유리 용기는 4주 발효시키는 것이 바람직하였다. This study evaluated the quality characteristics for optimization of premix-type Buckwheat (Fagopyrum esculentum) Soksungjang (BS). First, according to the amount of salt (8, 10, 12%), coliform counts were not detected in BS with 10 or, 12% salt at 21 days and Bacillus subtilis HJ 18-4 as a starter at 7 days. Therefore, 10% salt with starter culture might be considered as suitable conditions for safety. Second, according to the ratio of water (1:1, 1:1.5, 1:1.8), BS prepared with the same weights of meju powder and water showed the highest aminotype nitrogen content (688.76mg%) at 35 days; thus, an adequate fermentation state was established at this condition compared to others. Third, according to the type of container (pot, plastic, glass), the aminotype nitrogen contents were higher in the plastic container and pot than in the glass bottle. Lastly, according to the batch size (1.25, 2.5 kg), the coliform of the 2.5 kg sample decreased faster than that of 1.25 kg samples at 14 days. These results suggest that BS prepared with the same ratio of water and meju powder fermented with HJ 18-4 as a starter and 10% salt in a pot, plastic container (3 weeks) and glass container (4 weeks) showed desirable fermentation qualities.

탄소나노튜브와 하이퍼브랜치 폴리우레탄 혼합용액의 스프레이 코팅에 의한 직물의 전기발열 효과와 발수성

이선영,조재환,김영호,Lee, Sun-Young,Cho, Jae-Whan,Kim, Young-Ho 한국섬유공학회 2010 한국섬유공학회지 Vol.47 No.3

Cotton and polyester fabrics were coated with a hyperbranched polyurethane (HBPU) solution including multi-walled carbon nanotubes (MWNTs) using a spraying method. The MWNT-coated fabrics showed good water repelling properties at $70^{\circ}C$ and room temperature due to presence of well dispersed MWNTs on the fabric surface. The electrical heating effect of the MWNT-coated fabrics was demonstrated when a DC voltage of 10-30 V was applied to the fabrics, which was dependent on the electrical conductivity of the MWNT/HBPU composites. The MWNT coating on the fabric surface by spraying may be a good method for achieving electrical heating and water repellence.

유비쿼터스 컴퓨팅 환경에서 데이터 마이닝을 이용한 서비스 조합

이선영,이종연,Lee Sun-Young,Lee Jong-Yun 한국정보처리학회 2006 정보처리학회논문지D Vol.13 No.4

유비쿼터스 컴퓨팅 환경에서 사용자가 원하는 서비스를 다양한 상황에 맞게 적합한 서비스를 검색하고 조합하여 제공하는 것은 중요한 일이다. 그러나 기존 연구는 주로 서비스 발견에 관한 연구이며 사용자의 위치냐 주변 환경, 선호도에 관한 고려가 부족하고, 사용자 정보를 이용하여 기본 서비스들로부터 새로운 조합 서비스를 찾아내는 것이 미흡하다. 또한 서비스 조합에 있어 기존 연구는 단순한 기본 서비스들의 나열에 불과하고, 사용 이력을 고려하기 위한 구체적 방안을 제시하지 않는다. 따라서 본 논문에서는 사용자의 상황 정보 및 서비스 사용 이력을 고려한 데이터 마이닝 기반 서비스 조합 기법을 제안한다. 세부적 연구내용은 첫째, 최적의 서비스를 동적으로 생성하여 제공하는 COSEP 프레임워크를 설계하고 둘째, COSEP 프레임워크에서 데이터 마이닝 기능을 겸비한 온톨로지를 이용한 서비스 조합 기법을 제안한다. 본 연구는 사용자의 상황 정보에 능동적으로 반응하여 서비스를 발견하고 데이터 마이닝 기법을 가진 온토롤지를 이용하여 서비스를 조합함으로써 사용자에게 최적의 서비스를 제공하는 것이다. Since users want to have services correctly in their own position and surrounding circumstance in ubiquitous computing environment, it is very important to search, compose basic services and provide suitable services according to various circumstances. However existing techniques have been studied on service discovery mainly and lack consideration for position or preference of users. Furthermore, on service composition, they lists basic services simply and do not propose concretely method of use service history data for service composition. Therefore we propose a framework for context-based service provisioning middleware system, called COSEP, and Ontology engine with data ming. This research discovers services by reacting dynamically to circumstance information such as time and position of user, composites services using Ontology engine with data ming and offers newly created optimal services to users.