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      • KCI등재

        Hybridizing Genres and Cultural Ambivalence in Chang-rae Lee`s Native Speaker

        이정화 ( Jung Hwa Lee ) 한국영미문화학회 2009 영미문화 Vol.9 No.3

        This essay examines the thematic continuum between Chang-rae Lee`s reworking of generic conventions of the bildungsroman and the spy novel in Native Speaker. Reading Native Speaker as a novel not only about Asian American inclusion but also about Asian American authoring, I posit that Lee courts the mainstream American reading public by tactfully mixing conventions of the bildungsroman and the spy novel. Appropriating the two genres, Lee enacts a literary equivalent of John Kwang`s political project that privileges heterogeneity and hybridity. The bildungsroman, a representative Asian American literary expression, has tended to articulate Asian American integration into the nation, often subscribing to the `model minority` myth. Native Speaker uses a major staple of the bildungsroman by following how Henry makes sense of his childhood to construct a public identity. Unlike conventional bildungsromans, however, Lee presents Henry`s coming-to-terms with society as something to be undone rather than something to be accomplished by the end of the novel. Native Speaker problematizes successful cultural bildung by describing Henry`s spying as a function of his successful American education. Lee exploits the familiar trope of the inscrutable Asian spy by casting a Korean American spy as his protagonist, but he complicates the old association between the Asian spy and the `yellow peril`; Distinguishing Henry from stereotypical Asian agents as well as conventional spies, Lee opposes the logic behind the `yellow peril` in favor of a principle of hybridity. Appropriating as well as disrupting cultural expectations of Asian Americans and the literary conventions that code such expectations, Lee suggests "a double articulation" (in the Bhabhaian sense) as a viable strategy for Asian American authorship.

      • KCI등재

        아방가르드 인종 코미디: 영진 리의 『용비어천가』

        이정화(Jeonghwa Lee) 한국영미어문학회 2013 영미어문학 Vol.- No.106

        The current cross-national, cross racial, and cross cultural environment influences today’s new subjectivity formations. Such newly-created transnational subjects are even difficult to be classified as Asian American, as racial or national borders fall apart. In this context, this paper examines the work of Asian American woman playwright Young Jean Lee’s Songs of the Dragons Flying to Heaven. Songs of the Dragons Flying to Heaven employs frames of both stand-up and sketch comedies and exaggerates the representation of stereotypes against Korean Americans, Koreans, and white male Americans. Laughs generated by Bertolt Brecht’s “alienation effect” and conceptualized with a Sianne Ngai’s litery term, “ugly feeling” constantly lead the cosmopolitan audience to engage with the issues of race, gender, and ethnicity. The main plots of the play are two; one is the Artaud-like theater of cruelty where Korean women and a Korean-American woman show macho behaviors and another is the Brechtian epic theater where a white couple continues to find the meaning of their relationship. The two different plots do not interfere with each plot, but show all the characters try to expose their inner selves to the world and to stand up to a lot of suppression of minorities and of feminity they have experienced so far. Thus, a Young Jean Lee’s new version of racial comedy presents one stage where Koreans, Korean Americans, and white Americans can stand free as transnational.

      • KCI등재

        디젤차량용 통합연료히터의 저온유동성 성능평가

        이정화,박형원,이웅수,이영재,이보희,윤달환,Lee, Jeong-Hwa,Park, Hyung-Won,Lee, Woong-Su,Lee, Young-Jea,Lee, Bo-Hee,Yoon, Dal-Hwan 한국전기전자학회 2014 전기전자학회논문지 Vol.18 No.1

        본 연구에서는 저온유동성 성능검사 시스템 구현을 통해 디젤 차량용 통합형 연료히터의 성능을 평가한다. 저온 유동성 시험장치에서 $+20{\sim}-30^{\circ}C$ 온도범위에 따라 분리형과 통합형 연료히터 성능을 비교하고, 필터 전후에 따라 유압과 시동시간, 히터의 소모전력을 측정한다. 이때 다양한 종류의 필터면적을 사용함으로써 통합형 연료히터와 분리형을 비교한 결과 시동 시간이 23% 향상되었고, 저온시동성능은 19% 정도 향상된다. It is very important to supply the diesel fuel from fuel tank to combustion chamber in case of cold start procedure. the paraffin hydrocarbons are easily solidified at low fuel temperature and it can be blocking the fuel supply to the high pressure fuel pump. In order to reduce the fuel crystallization (Waxing), it have been used to develop not only cold flow additives but also the proper mounting design of fuel filter. Block heater in the fuel filter assembly have been also contained to improve the cold start and prevent blocking the fuel supply in Common Rail Direct Injection System. we can obtain the fuel pressure drop and fuel flow rate, power consumption of fuel heater to have the cold flow evaluation test with the saperated and composited fuel heater at the low ambient temperature, Due to evaluating cold flow performance of two block heater, we knew that composited package fuel heater was the excellent cold flow performance compared to separated type and obtained the parameters of cold flow.

      • SCOPUSKCI등재

        A case of lung abscess caused by Burkholderia cepacia in healthy child

        이정화,이소희,홍성진,최영철,황은구,Lee, Jung Hwa,Lee, So Hee,Hong, Seong Jin,Choi, Young Chil,Hwang, Eun Gu The Korean Pediatric Society 2007 Clinical and Experimental Pediatrics (CEP) Vol.50 No.1

        B. cepacia는 그람 음성 호기성 세균으로서 주로 면역 기능 저하 환자들에서 기회 감염의 중요한 원인균으로 알려져 있다. 이 세균은 매우 병원성이 강하여 침습적인 괴사성 감염을 일으키며 사망에까지 이르게 할 수 있다. B. cepacia는 여러 항생제에 높은 저항성을 보이므로 한 가지 항생제의 단독 요법보다는 여러 항생제의 병용용법을 사용해야 한다. 저자들은 건강한 소아에서 자연 발생한 B. cepacia에 의한 폐농양을 경험하였고 meropenem과 trimethoprim/sulfamethoxazole 병용 요법과 수술적 치료를 통해 성공적으로 치유한 1례를 보고하고자 한다. Burkholderia cepacia is a Gram-negative aerobic bacillus known to cause opportunistic infections in the immune-compromised hosts. This microorganism is strongly virulent and causes a necrotising invasive infection that may lead to death. As B. cepacia is highly resistant to various antimicrobials, combination antimicrobial therapy must be used instead of monotherapy. We report a successful treatment of lung abscess that was naturally caused by B. cepacia in a healthy child, through combination antimicrobial therapy of meropenem and trimethoprim/sulfamethoxazole and operative management.

      • KCI등재

        간 이식 소아에서 발생한 이식 후 림프 증식 질환: 단일 기관에서의 21년 경험

        이정화,고재성,서정기,이남준,서경석,이건욱,강경훈,Lee, Jung-Hwa,Ko, Jae-Sung,Seo, Jeong-Kee,Yi, Nam-Joon,Suh, Kyung-Suk,Lee, Kuhn-Uk,Kang, Gyeong-Hoon 대한소아소화기영양학회 2009 Pediatric gastroenterology, hepatology & nutrition Vol.12 No.2

        Purpose: To analyze the clinical spectrum of posttransplantation lymphoproliferative disorder (PTLD) after liver transplantation in children. Methods: From January 1988 to June 2009, we retrospectively reviewed the medical records of 8 PTLD cases among 148 pediatric patients underwent liver transplantation. The age at transplantation, time of presentation after transplantation, clinical manifestations, histologic diagnosis, results of EBV (Epstein-Barr virus) assessments, managements and outcomes of PTLD were investigated. Results: The prevalence of PTLD in liver transplant pediatric recipients was 5.4% (8 of 148). The mean age of patients was 25.4${\pm}$21.3 months (range 10 to 67 months). Seven of 8 patients (87.5%) underwent liver transplantation before 1 year of age. The common clinical presentations were persistent fever (8 of 8, 100%) and bloody diarrhea (6 of 8, 75%). PTLD was diagnosed with gastrointestinal endoscopic biopsies in five patients and surgical biopsies in three. Histologic findings showed early lesion in three patients, polymorphic in two, and monomorphic in three. Burkitt lymphoma and lymphoblastic lymphoma were found in two of 3 monomorphic patients. Seven of 8 patients were found with EBV-positive. Eight patients were treated with dose reduction of immunosuppressants and infusion of ganciclovir. Rituximab was added to four patients. PTLD were successfully managed in all patients except one who died of sepsis during chemotherapy. Conclusion: Major risk factor of PTLD was to undergo liver transplantation before 1 year of age. Continuous monitoring for EBV viral load and gastrointestinal endoscopic biopsy may be useful to early detection of PTLD. 목 적: 간 이식 소아에서 발생한 PTLD의 경험을 통해 발현 양상, 발병 위험 인자, 진단 방법, 치료 및 예후에 영향을 줄 수 있는 요인들을 알아보았다. 방 법: 1988년 1월부터 2009년 6월까지 서울대학교 어린이병원에서 간 이식을 받은 소아 148명 중 PTLD로 진단된 8명의 환아들을 대상으로 후향적 분석을 하였다. 이식당시 나이, 이식 후 PTLD 증상이 나타날 때 까지의 기간, 임상적 증상, 조직학적 소견, EBV 검사 결과, 치료 및 경과에 대해 조사하였다. 결 과: 간 이식 후 PTLD의 유병률은 5.4%였고, 발생시기는 조기 PTLD가 6명(75%), 후기 PTLD가 2명(25%)이었다. 대상 환아의 간 이식 당시 나이는 평균8.1${\pm}$4.4개월로, 12개월 미만이 7명(87.5%), 12개월 이후가 1명(12.5%)이었다. PTLD 진단 시 주증상은 발열, 설사, 혈변이었고 모두 장이나 장간막 림프절 침범이 있었다. 3명은 개복 수술로 5명은 상부 위장관 내시경이나 대장 내시경을 통한 조직 검사로 진단되었다. 조직학적 진단은 early lesion이 3명, polymorphic PTLD 2명, monomorphic PTLD 1명, Burkitt 림프종 1명, B 세포 림프종이 1명이었다. EBV는 7명에서 양성을 보였다. 치료는 전례에서 1차 치료로 면역억제제를 중지하고 항바이러스제(ganciclovir)를 투여 하였다. 4명의 환아들에서 rituximab을 추가하였고 Burkitt 림프종과 B 세포림프종으로 진단된 환아들은 각각 항암 치료를 병행하였다. B 세포 림프종으로 진단되어 치료 중에 패혈증으로 1명이 사망하였으며 나머지 7명은 호전되었다. 결 론: 1세 미만에 간 이식을 받은 경우가 PTLD 발생의 주요한 위험 인자였으며, EBV viral load의 지속적인 감시와 위장관 내시경을 통한 조직 검사가 PTLD 조기진단에 유용할 것으로 생각한다.

      • Cloning and Sequence Analysis of 3'-Terminal Region of Human Insulin Receptor Gene

        이정화,박선희,박종상,Lee, Jung-Hwa,Park, Sun-Hee,Park, Jong-Sang Korean Society for Biochemistry and Molecular Biol 1990 한국생화학회지 Vol.23 No.3

        사람 인슐린 수용체 유전자의 3'말단 부분의 5 kb를 클로닝하였다. 건조젤 하이브리디제이션을 이용하여 제한효소인 EcoRI으로 자른 사람 인슐린 수용체 유전자 중 4.5-5.5 kb를 확인하고 ${\lambda}gt$ 10벡터에 삽입시켰다. 이렇게 하여 만든 유전자 라이브러리를 카르복시 말단에 해당하는 합성 NDA로 스크린하여 표지를 내는 plague들을 pBR328에 재클로닝하였다. 부분적인 DNA의 염기서열 결정으로 클로닝한 DNA가 사람 인슐린 수용체임을 확인하였다. ExoIII nuclease로 DNA를 크기순서대로 자르는 방법을 이용하여 전사 말단 부위의 1.3 kb의 유전자 염기서열을 결정하였다. 염기서열 분석결과 인슐린 수용체 유전자는 poly(A)가 붙는 자리 앞쪽의 15 뉴클레오티드에 전통적인 AATAAA 염기가 아닌 AATATA 염기가 존재함을 알았는데 아마도 이것이 유전자 조절에 관여할 것으로 여겨진다. 또한 이 유전자는 mRNA 프로세서에 관여한다고 제안된 G/T 밀집 염기서열을 가지고 있음을 알았다. The 5 kb long 3'-terminal region of genomic DNA of Human Insulin Receptor(IR) gene was cloned. By the dry-gel hybridization, 4.5-5.5 kb long DNA of EcoRI cut human chromosomal DNA was identified and inserted into ${\lambda}gt$ 10 vector. Constructed subgenomic library was screened with synthetic 21 mer probe corresponding to the carboxy terminal. By the partial DNA sequencing about 200 bp in 5 kb genomic DNA, we found the sequence was the same as the published result. We sequenced about 1.3 kb transcription terminal region by the ExoIII deletion method. The result of the sequence analysis showed that the IR gene has AATATA sequence 15 nucleotide upstream of poly(A) site instead of the canonical AATAAA consensus sequence and this may play a role in gene regulation and that in poly(A) downstream region the IR gene has the T-rich, G/T cluster sequence, which was proposed as a element of mRNA processing.

      • SCOPUSSCIEKCI등재

        An Experimental Study on the Effect of Cytoskeletal Changes or Osteoblastic Cell Activities

        이정화,남동석,Lee, Jeong-Hwa,Nahm, Dong-Seok The Korean Association Of Orthodontists 1998 대한치과교정학회지 Vol.28 No.6

        Cytoskeleton은 세포핵과 세포외 기질을 연결하고 있어서 기질에 가해지는 물리적 힘에 의해 cytoskeletal change가 유도되고 이에 의해 세포의 개조활성이 영향을 받는다고 생각되어 왔다. 본 연구는 골모세포 활성에 대한cytoskeletal change의 역할을 규명하기 위한 것으로서, 신생 백서로부터 조골세포양 세포를 분리, 배양하고 네가지 농도의 cytochalasin B(CB) 또는 colchicine(COL)을 3시간 처리하였다. 다시 배양액을 교환하고 24시간 동안 배양하여 prostaglandin $E_2\;(PGE_2)$, interleukin-6(IL-6), tumor necrosis factor-$\alpha$(TNF-$\alpha$) 및 matrix metalloproteinase-1 (MMP-1) 생산을 측정하고 통계적으로 비교하였으며 cytoskeletal protein actin 변화를 관찰하기위하여 면역형광염색하고 형광현미경으로 관찰하여 다음과 같은 결과를 얻었다: 1. CB 처리군에서 $PGE_2$ 생산이 증가되는 경향을 보였고 COL 처리군에서는 약물농도에 비례하여 증가하였다. 2. IL-6 생산은 CB농도 1.0 ${\mu}g/ml$일때를 제외하고 증가되었다. 3. TNF-$\alpha$도 CB 농도가 1.0 ${\mu}g/ml$ 일때를 제외하고 증가하였다. 4. MMP-1 생산은 CB 처리군에서 감소하는 경향을 보이고 COL 처리군에서는 변화되지 않았다. 5. CB처리군에서는 cytoskeletal actin stress fibers가 사라지고 세포모양이 둥글어지는 경향을 보였다. 이상의 결과로 미루어 보아 cytoskeletal rearrangement는 골모세포유사세포의 활성, 특히 $PGE_2$, IL-6, 및 TNF-$\alpha$같은 paracrine/autocrine factor의 생산과 관련있는 것으로 보인다. The cytoskeleton has been shown to form a network, connecting the extracelluar matrix via integrin with the nucleus and the cytoplasmic constituents of the cell. It is therefore assumed that the cytoskeleton may mediate signals generated by perturbations originating in the matrix. The purpose of this study is to examine the effect of cytoskeletal change on osteoblastic cell activities. The author cultured osteoblastic cells obtained from neonatal mouse calvaria. The cells were teated with cytochalasin B(CB) or colchicine (COL) at four concentrations for 3 hours and after another 24 hours the conditioned media was collected and assayed for prostaglandin $E_2\;(PGE_2)$, interleukin-6(IL-6), tumor necrosis factor-$\alpha$ (TNF-$\alpha$) and matrix metalloproteinase-1(MMP-1). In addition, the cytoskeletal protein actin were observed by immuno-fluorescence. The results were as follows: 1. The production of $PGE_2$ showed the tendency to be increased in CB-treated group. $PGE_2$ was increased in COL-treated group dose-dependantly, 2. IL-6 production, in CB-treated group, was increased, except at 1.0 ${\mu}g/ml$. IL-6 was induced in COL-treated group. 3. TNF-$\alpha$ production was increased in CB-treated group, except at 1.0 ${\mu}g/ml$, and in COL-treated group, that was increased. 4. The MMP-1 production was decreased in CB-treated soup and was not changed in COL-treated group, which could be selectively visualized by immunoblotting with monospecific antibody. 5. The cytoskeletal actin stress fibers were disappeared and the cells showed to be rounded in CB-treated group. These results indicated that there are a relationship between the cytoskeletal rearrangements and osteoblastic cell activities, especially in release of paracrine/autocrine factors, such as $PGE_2$, IL-6, and TNF-$\alpha$.

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