Collective “We” and the Communal Consciousness of Diaspora Identity in Chang-rae Lee`s On Such a Full Sea

이지은 ( Ji Eun Lee ) 서울대학교 미국학연구소 2014 미국학 Vol.37 No.2

This paper examines how Change-rae Lee`s On Such a Full Sea imagines a communal consciousness of diaspora identity through the use of a collective narrative voice that creates a narrative sense of split identity in readers` minds. The novel`s use of heroine figure, Fan, as a locus of communal consciousness very much corresponds to the conventional framework of the Bildungsroman narrative, which builds a communal consciousness incorporated into a progressive history through a depiction of the individual hero`s or heroine`s reconciliation with social norms. The narrative consciousness grounded in this individual hero/heroine invites readers to experience the sense of community congruent with the linear development of history. Lee`s novel, however, complicates the narrative consciousness through a collective narrative voice “we,” by shifting the referent from “we” inside the narrative frame to “we” outside the narrative frame and by dislocating the main figure Fan from society. The sense of disjointedness manifested by the narrative sense of split identity and the heroine`s displacement in society conceptualizes diaspora identity. Diaspora identity configured in this way propounds a more liberating version of communal consciousness as it allows deviations from norms and exploration of new possibilities not bound by nation or ethnicity. The communal consciousness of diaspora identity depicted in Lee`s novel challenges the homogeneous sense of community merged with history and gestures toward heterogeneous deviations from history.

트라닐라스트에 의한 각막실질세포의 증식억제효과

이지은,한희준,이종수,엄부섭,Ji-Eun Lee,Hee Jun Han,Jong Soo Lee,Boo Sup Oum 대한안과학회 2005 대한안과학회지 Vol.46 No.3

Purpose: To evaluate the inhibitory effect of tranilast on proliferation of cultured human keratocytes, and to investigate the apoptotic response and the cellular morphologic changes associated with tranilast in vitro. Methods: Human corneal keratocytes were exposed to tranilast at a concentration of 0.05, 0.1, 0.2, 0.4, 0.8, 1.6, and 3.2 mg/ml for a period of 4, 24, and 48 hours. Evaluations were conducted with MTT-based- calorimetric assay for measuring the metabolic activity, flow cytometric analysis and fluorescent micrograph for assessing the apoptotic response, and inverted phase-contrast micrograph and electron microscopy for observing the morphologic changes. Results: The inhibitory effect of human keratocyte proliferation was found to have a dose and time dependent pattern (p<0.05). In flow cytometry, the maximal apoptotic response developed at 0.8 mg/ml concentration after 4 and 24 hours of exposure time, and apoptotic cells were demonstrated in fluorescent micrograph. At higher concentration of Tratnilast, human corneal keratocytes were more swollen rather than having a spindle shape and being detached from the bottom of the dish. The damaged keratocytes had degenerative and apoptotic changes like the formation of phagolysosomal granule, marginal condensation in the nucleus, and bleb formation of the nuclear membrane. Conclusions: The apoptotic response of tranilast is concerned with the inhibitory effect of human corneal keratocyte proliferation. Therefore, tranilast shows promise in clinical use for the inhibition of postoperative excimer laser induced corneal opacity or haze with fewer side effects.

수소화-탈수소화법을 이용한 탄탈륨 스크랩으로부터 탄탈륨 분말 제조 연구

이지은,이찬기,박지환,윤진호,Lee, Ji-eun,Lee, Chan Gi,Park, Ji Hwan,Yoon, Jin-Ho 한국자원리싸이클링학회 2018 資源 리싸이클링 Vol.27 No.5

For recylcing of high purity tantalum (Ta) scrap, We investigated manufacture of tantalum powder using hydride-dehydride (HDH) process. Tantalum had excellent properties such as ductile, hardness and high melting point. Usually these properties made difficult to make a powder. In this study, Tantalum powder was manufactured using Tantalum hydride via hydridation. Tantalum hydride was formed at $500^{\circ}C$, 5 hr/$700^{\circ}C$, 3 hr and it is easy to make a tantalum hydride powder because hydrogen in the tantalum act as a defect dislocation and lattice expansion. The powder was pulverized to a size of less than $10{\mu}m$ under a condition of 1300 rpm, 30 min using a ring mill, and tantalum powder with less than 50 ppm hydrogen was prepared through dehydridation in an Ar and low vacuum atmosphere.

결정질 실리콘 및 CuIn_xGa_(1-x)Se₂ 모듈의 부분음영에 따른 태양전지 특성 변화 및 바이패스 다이오드의 작동 메커니즘 분석

이지은,배수현,오원욱,강윤묵,김동환,이해석,Lee, Ji Eun,Bae, Soohyun,Oh, Wonwook,Kang, Yoonmook,Kim, Donghwan,Lee, Hae-Seok 한국재료학회 2015 한국재료학회지 Vol.25 No.4

This paper presents the impact of partial shading on $CuIn_xGa_{(1-x)}Se_2(CIGS)$ photovoltaic(PV) modules with bypass diodes. When the CIGS PV modules were partially shaded, the modules were under conditions of partial reverse bias. We investigated the characterization of the bypass diode and solar cell properties of the CIGS PV modules when these was partially shaded, comparing the results with those for a crystalline silicon module. In crystalline silicon modules, the bypass diode was operated at a partial shade modules of 1.67 % shading. This protected the crystalline silicon module from hot spot damage. In CIGS thin film modules, on the other hand, the bypass diode was not operated before 20 % shading. This caused damage because of hotspots, which occurred as wormlike defects in the CIGS thin film module. Moreover, the bypass diode adapted to the CIGS thin film module was operated fully at 60% shading, while the CIGS thin film module was not operated under these conditions. It is known that the bypass diode adapted to the CIGS thin film module operated more slowly than that of the crystalline silicon module; this bypass diode also failed to protect the module from damage. This was because of the reverse saturation current of the CIGS thin film, $1.99{\times}10^{-5}A/cm^2$, which was higher than that of crystalline silicon, $8.11{\times}10^{-7}A/cm^2$.

영상 인식 기반 신속 인플루엔자 자동 판독 기법 개발

이지은,주윤하,이정찬,Lee, Ji Eun,Joo, Yoon Ha,Lee, Jung Chan 대한의용생체공학회 2019 의공학회지 Vol.40 No.3

To examine different types of influenza diagnostic test kits automatically, automated rapid influenza diagnostic test method based on image recognition is proposed in this paper. First, the proposed methods classify a variety of the rapid influenza diagnostic test kit based on support vector machine that analyzes the kits' feature point. Then, to improve the accuracy of test, the proposed methods match the histogram of both the target image of influenza kit and the input image of influenza kit for minimizing the effect of environment factors, such as lighting and exposure variations. And, to minimize the effect from composition of the hand-helds devices, the proposed methods extract the feature point and match point-by-point between target image of influenza kit and input image of influenza kit. Experimental results of 124 experimental group show that the proposed methods significantly have effectiveness, which shows 90% accuracy in moderate antigen, for the preliminary examination of influenza, and provides the opportunity for taking action against influenza.

낙동강 하류 물금과 을숙도 수환경의 진핵 플랑크톤 종조성에 대한 분자모니터링

이지은,이상래,윤석현,정상옥,이진애,정익교,Lee, Jee Eun,Lee, Sang-Rae,Youn, Seok-Hyun,Chung, Sang Ok,Lee, Jin Ae,Chung, Ik Kyo 한국해양학회 2012 바다 Vol.17 No.3

본 연구는 메타게놈 분석법을 기초로 낙동강 하류 담수 환경의 물금과 기수 환경의 을숙도대교 정점에서 채수된 환경 시료내의 진핵 플랑크톤 종다양성 및 군집 구조를 비교 분석하고자 하였다. 수환경 시료에서 추출된 DNA에 대한 environmental Polymerase Chain Reaction(PCR)을 수행하여 18S rDNA 클론라이브러리를 구축하였고, colony PCR, PCR-Restriction Fragment Length Polymorphism(RFLP), 염기서열 결정 및 유사도 분석을 통하여 종다양성을 분석하였다. 물금 및 을숙도대교 정점에서 338개의 클론들을 분석하였고(170 clones, 물금; 168 clones, 을숙도대교), 그 결과 총 74개의 phylotype을 발굴하였다(49개, 물금; 25개, 을숙도대교). 발굴된 phylotype에 대한 계통 분석 결과, Stramenopiles, Cryptophyta, Viridiplantae, Alveolata, Rhizaria, Metazoa 및 Fungi 등의 분류군에 속하는 다양한 생물종이 발굴되었으며, 국내 미기록종 및 신종 후보 가능 생물종과 속(genus)이상의 새로운 분류학적 처리가 필요한 생물종의 존재를 확인하였다. 특히 Stramenopiles의 Pirsonia 및 Alveolata의 Perkinsea에 속하는 phylotypes 등 국내 미기록 생물종을 포함한 숨은 종다양성(cryptic species diversity)의 발굴은 분자모니터링 기법이 낙동강 하구역 수생태계 변화 모니터링을 위한 새로운 유용한 생물학적 정보를 제공할 수 있음을 제시하고 있다. We have studied the eukaryotic plankton species diversity to compare the community structure of fresh and brackish waters in the lower reaches of the Nakdong River using metagenomic methods. We constructed 18S rDNA clone libraries of total DNAs extracted from environmental water samples collected at Mulgeum (MG100929, fresh) and Eulsukdo bridge (ES, brackish). Through the steps of colony PCR, PCR-RFLP, sequencing and similarity analysis, we discovered the diverse species composition of eukaryotic plankton. Total 338 clones (170 at MG100929 and 168 at ES) were analyzed, and then we found 74 phylotypes (49 for MG100929 and 25 for ES). From the phylogenetic analysis, we confirmed various eukaryotic plankton of broad range of taxonomic groups, including Stramenopiles, Cryptophyta, Viridiplantae, Alveolata, Rhizaria, Metazoa, and Fungi. We also found several unreported species in Korea and candidates of new taxonomic entities at levels higher than genus. Especially, the cryptic species diversity including unreported phylotypes of Pirsonia (Stramenopiles) and Perkinsea (Alveolata) suggests that the molecular monitoring method can produce new informative biological data in monitoring the changes in the Nakdong River Mouth ecosystem.

원추각막에서 발현된 유전자 연구

이지은,엄부섭,이종수,Ji Eun Lee,Boo Sup Oum,Jong Soo Lee 대한안과학회 2006 대한안과학회지 Vol.47 No.12

Purpose: To evaluate the pathogenesis of keratoconus through differentially expressed genes in human keratocyte of keratoconus. Methods: Total RNAs extracted from primary cultured keratocytes in normal cornea and keratoconus were used for the synthesis of cDNA. Differentially expressed genes were screened by ACP-based PCR method using GeneFishingTM DEG kits. The differentially expressed bands were sequenced and analyzed, and identified genes were further evaluated by RT-PCR. Results: Over-expressions of BMP4 and CFL1 and under-expression of CFL1, GRCC10, and TIMP3 were verified, and comfirmed by RT-PCR. All confirmed genes were concerned with cytoskeleton, wound healing, and apoptosis. Conclusions: The identified differentially expressed genes seem to be important role in the mechanism of keratoconus, and apoptosis as well as cytoskeleton and wound healing may be attributed to the underlying stromal keratocyte.

간호사의 건강문제와 업무에 대한 부담감이 프리젠티즘에 미치는 영향

이지은,이은주,Lee, Ji Eun,Lee, Eunjoo 한국데이터정보과학회 2017 한국데이터정보과학회지 Vol.28 No.4

본 연구는 간호사의 건강문제와 업무에 대한 부담감이 프리젠티즘에 미치는 영향을 파악하고자 시행되었다. 연구대상은 K도와 D광역시 4개의 종합병원에 근무하는 간호사로 편의추출 방식으로 수집하였다. 연구결과 간호사의 건강문제는 목 어깨 등 허리통증이 가장 많이 나타났 고, 간호사는 평균 3.62개의 건강문제를 가지고 있는 것으로 나타났다. 간호사의 프리젠티즘은 100점 만점에 평균 $43.37{\pm}12.43$점으로 나타났다. 건강문제의 개수와 업무에 대한 부담감과 프리젠티즘은 유의한 정적인 상관관계가 나타났다. 건강문제의 개수와 업무에 대한 부담감은 현 병동에서의 근무기간, 직급, 의료 기관 규모, 성별 등의 인구사회 학적 요인을 통제한 상태에서 간호사의 프리젠티즘에 유의한 영향을 주는 것으로 확인되었다. 이는 업무에 대한 부담감을 낮출수록, 건강문제를 잘 관리 할수록 간호사의 프리젠티즘을 낮 출 수 있다는 결과이다. 따라서 향후 간호사의 개인수준, 조직수준, 사회수준에서 업무에 대한 부담감을 낮출 수 있는 방안이 필요하며, 이를 통해 프리젠티즘을 최소화하여 생산성을 높일 수 있어야 하겠다. The purpose of this study was to investigate the effects of nurses' perceived burden from work and health problems on the presentism of nurses. The study subjects were recruited from four general and tertiary hospitals in K province and D metropolitan city. A quarter of nurses had shoulder, back, and neck pain and average number of health problems was 3.62. The nurses' presenteeism score was $43.37{\pm}12.43$ points out of 100 points. There was a statistically significant relationship between nurses' perceived burden, numbers of health problems, and presenteeism. The numbers of health problems and perceived burden of nurses had significant effects on presenteeism of nurses while controlling demographic factors such as length of work experience, job position, types of hospital, and gender. These results suggested that the less burden from work and the lower number health problems could result in the lower level of presenteeism of nurses. Therefore, it is necessary to develop diverse strategies to reduce the burden of nurses and health problems at both individual and organizational levels as a way to increase productivity of hospital.

산업재해에 의한 안외상에 대한 역학적 고찰

이지은,김수영,이승욱,이상준,Ji Eun Lee,MD,Soo Young Kim,MD,Seung Uk Lee,MD,Sang Joon Lee,MD 대한안과학회 2013 대한안과학회지 Vol.54 No.1

Purpose: To investigate the epidemiological and clinical characteristics of industrial ocular trauma for treatment application and prevention. Methods: A retrospective survey of 207 eyes from 206 patients who visited Gosin University Gospel Hospital from January 1, 1998 to December 31, 2007 was performed. The age, sex, diagnosis, causes, injury site, primary ocular surgery, duration of hospitalization and treatment, and initial and final visual acuities were reviewed using the United States Eye Injury Registry (USEIR) form based on the Birmingham Eye Trauma Terminology (BETT). Results: The trauma incidence was higher in males (95.65%) in their forties (50.24%). The mean patient age was 41.5 years. Separately counted lesions were presented as a proportion to total injured eyes. The most common diagnosis of industrial ocular traumas was global injuries (124.1%), orbital wall fractures (6.3%), adnexal trauma (5.3%) and optic nerve injuries (3.4%). The most common cause of ocular injuries was flying iron piece (28.67%), and the cornea was the most frequent injured site (69.1%). In 43% of the patients, surgical treatments were performed and the most common surgery was primary closure of the cornea or sclera (82.02%), followed by vitrectomy (30.33%). The average of initial and final visual acuity (log MAR) was 1.2 and 0.93, respectively. In 69.7% of all patients, the final visual acuity was improved or stabilized compared to the initial status. Conclusions: Flying objects are still the most frequent cause of industrial ocular trauma and in approximately 70% of all patients, the final visual outcome improved or stabilized compared to the initial status. These types of ocular traumas can be significantly reduced by wearing protector shields along with educational safety programs.

유용 미생물 제제 이용 발효 유채박 비료 제조 및 시용 효과

이지은,박원,김광수,이영화,권다은,문윤호,차영록,강용구,Lee, Ji-Eun,Park, Won,Kim, Kwang-Soo,Lee, Yong-Hwa,Kwon, Da-Eun,Moon, Youn-Ho,Cha, Young-Lok,Kang, Yong-Ku 한국작물학회 2019 한국작물학회지 Vol.64 No.1

Rapeseed meal, which is a byproduct of rapeseed oil extraction, improves crop productivity by supplying nutrients to the soil. The present study aimed to manufacture fermented rapeseed meal compost using two effective microbial agents and evaluate their efficiency as fertilizer. To types of fermented rapeseed meal, manufactured using either a bio-carrier or microbial agent, showed no differences in pH, electrical conductivity (EC), and total nitrogen content. However, the contents of $NH_4-N$ and $NO_3-N$ as inorganic nitrogen were increased by 5.6 times and 1.5 times, respectively, after 5 d of fermentation. Rapeseed meal fermented for 5 d was applied to tomato a basal fertilizer and after eight weeks, the plant height increased in all fermented rapeseed treatments compared to that in the chemical fertilizer treatment, and also the quantum yield of photosystem II (PS II) showed the same trend. The total nitrogen content of tomato leaves treated with a microbial fermented rapeseed meal was twice as high as that of that treated with a chemical fertilizer. It was confirmed that the increase in the tomato height was an effect of the rapeseed meal containing inorganic nitrogen, which can easily be absorbed by plants. From these results, it is considered that fermented rapeseed meal manufactured with an effective microbial agent for 5 d showed the highest inorganic nutrient content and greatest growth enhancement in tomato.