Orthodontic Treatment of a Child with Short Root Anomaly : a Case Report

이정은,이제우,신가영,안소연,송지현,라지영,Lee, Jeongeun,Lee, Jewoo,Shin, Gayoung,An, Soyoun,Song, Jihyun,Ra, Jiyoung Korean Academy of Pediatric Dentistry 2015 대한소아치과학회지 Vol.42 No.4

Short root anomaly (SRA) is very rare, but can be problematic for physicians because patients with SRA are more vulnerable to root resorption with orthodontic forces. During the mixed dentition period, it may be difficult to diagnose generalized SRA. This article reports the treatment of an orthodontic patient with SRA at the early mixed dentition stage. Despite local tooth loss, a relatively favorable outcome was obtained without excessive root resorption. Ultimately, orthodontic therapy is possible for patients with generalized SRA, but precautions should be taken to avoid complications, such as tooth loss or root resorption.

3종 시멘트로 접착한 소아용 기성 지르코니아 전장관과 유치 상아질의 전단결합강도

이정은,박호원,이주현,서현우,Lee, Jeongeun,Park, Howon,Lee, Juhyun,Seo, Hyunwoo 대한소아치과학회 2018 대한소아치과학회지 Vol.45 No.3

The aim of this study was to evaluate the shear bond strength of three luting cements and to identify the effect of thermocycling. Zirconia discs were made similar to the inner surface of a preformed pediatric zirconia crown ($NuSmile^{(R)}$ ZR crown: ZRCr). The similarity between the zirconia discs and the inner surface of a ZRCr was confirmed by scanning electron microscope. Three luting cements were $Ketac^{TM}$ Cem Permanent Glass Ionomer Luting Cement (KGI), $RelyX^{TM}$ Luting Plus Cement (RLP), $RelyX^{TM}$ Unicem Self-Adhesive Universal Resin Cement (RUR). Three luting cements were bonded according to the manufacturer's instructions for 60 zirconia discs and 60 dentin of primary teeth. Total of 120 specimens were divided into two subgroups: One was not aged, and the other was tested with 5500 thermocycling. Shear bond strength was measured using a universal testing machine, and the fracture patterns were observed with SEM. On the zirconia discs and the dentin of primary teeth, shear bond strength of RUR was higher than that of KGI and RLP, and there were statistically significant differences by cement type. The shear bond strength differences for RUR were not statistically significant depending on thermocycling.

양성 고페닐알라닌혈증 환자에 대한 임상적 고찰과 유전자 분석

이정은,이정호,이동환,Lee, Jeongeun,Lee, Jeongho,Lee, Dong Hwan 대한유전성대사질환학회 2016 대한유전성대사질환학회지 Vol.16 No.2

Purpose: This study aimed to analyze genetic mutations, clinical manifestations, and treatment of patients with benign HPA in Korea. Methods: This case series study involved ten HPA patients who were referred to our hospital because of high phenylalanine concentration. We investigated their demographic features, clinical manifestations, and mutations of the PAH gene through direct DNA sequencing. Results: Among ten patients with benign HPA, two pairs of patients were related (father-daughter, mother-daughter relationship) cases, and all of them showed no specific clinical manifestations or notable past history. Their plasma phenylalanine levels ranged between 1.2 and 4.2 mg/dL. In the tetrahydrobiopterin (BH4) loading test, all patients were nonresponsive to BH4. In the confirmation test of PAH mutation analysis, we identified eleven different alleles out of twelve. The most common allele was R53H (c.158G> A). In addition, two novel PAH gene mutations, V423A (c.1268T>C) and V51A (c.152T>C), were identified. Although the patients did not receive any pharmacologic treatment or continuous phenylalanine restriction dietary therapy, their neurocognitive development was normal. Moreover, on serial outpatient follow-up tests, all patients maintained phenylalanine levels below 6 mg/dL. Conclusion: This study is the first in Korea to analyze benign HPA patients. All patients with benign HPA could maintain phenylalanine levels below 6 mg/dL with normal neurocognitive development, without continuous therapy. Therefore, performing mutation analysis and distinguishing benign HPA from phenylketonuria (PKU) are important to help improve life quality in patients with benign HPA by avoiding unnecessary lifelong therapy.

국내 20대 여성의 애슬레저 웨어(Athleisure wear) 착용실태 조사

이정은,최세린,도월희,Lee, Jeongeun,Choi, Selin,Do, Wolhee 한국의류산업학회 2017 한국의류산업학회지 Vol.19 No.5

This study investigates the wearing behavior and athleisure wear design preferences of women in their twenties as related to the design development of athleisure wear. A questionnaire survey was conducted on 185 women in their 20s. The survey was conducted from September to October 2016. Questionnaire items consisted of respondents' general items, athleisure wear and preference related items, and athleisure wear purchase related items. We collected 185 questionnaires from participants; subsequently, 169 were used as analytical data (except for incomplete questionnaires). The results of the study are as follows. Fit and wear comfort was the most important factor in the selection of athleisure wear. As a result of investigating the popularity of the athletic wear brand, the preference for the total sportswear brand was higher than the professional athletic wear brand. When the preferred colors were examined, the achromatic colors were ranked higher than chromatic colors. An examination of the preferred designs according to items indicated that the bra top preferred the 'U' shaped front plate and the 'Y' base basic type; in addition, T-shirts with the round neckline and the 1/4 length sleeves were preferred as tops. Leggings preferred long length type. It is necessary to develop a brand that matches the preference of the twenties' consumers by adjusting the aged target that can avoid the overheated competition and develop a niche market.

SAS macro faces를 사용한 체르노프 얼굴 분석에 의한 좋은 은행 평가

이정은,정혜선,김민지,김지현,손영숙,Lee, Jeongeun,Jeong, Hyeseon,Kim, Minji,Kim, Jihyun,Son, Young Sook 한국통계학회 2013 응용통계연구 Vol.26 No.6

The SAS macro faces program by Friendly (1992) is for Chernoff face analysis, which is one of methods for the visualization representation of multivariate data. In this paper, we examined 18 face features used in the program and presented the modified program depending on the definition of a good face in days present. In addition, a good bank evaluation for 15 domestic banks was performed through Chernoff face analysis based on 11 bank economic indicators representing stability, the consumer satisfaction, soundness, and banks profitability.

전기장애 의한 바이오 필름에서의 미생물 성장억제

이정은(Jeongeun Lee),손아정(Ahjeong Son),이동현(Donghyun Lee),빌리 채(Beelee Chua) 대한환경공학회 2021 대한환경공학회 학술발표논문집 Vol.2021 No.11

Language Attitudes of English-Korean Bilinguals

이정은(Lee Jeongeun) 한국사회언어학회 2013 사회언어학 Vol.21 No.2

This study observes how second generation English-Korean bilinguals display language attitudes during an unstructured interview, and how they construct their identities in narratives. The interviews were about their language use, culture, and identities. The interviewees made use of specific types of speech acts as part of their response strategies. The analysis focused on these speech acts and the positioning of themselves and others. Findings of the qualitative analysis revealed the interviewees′language attitudes, especially when they defined their mother tongue and explained the communicative situations and language choices. This study found that the interviewees have developed negative or indifferent attitudes towards verbal exchanges with native Koreans because their choice to speak Korean in conflict-ridden communication led to positioning of themselves as inarticulate, rule-breaking, berated, and alien. Their failure to achieve cooperation and recognition when they communicated in Korean had negative influences on their self-esteem, which significantly impacted the use of Korean as heritage language, and the formation of their identities as the second generation Kyopos. (185)

기후변화정책과 미세먼지: 대기오염물질을 고려한 기후경제통합모형 확장에 대한 연구

이정은(Jeongeun Lee),구윤모(Younmo Koo) 한국환경정책학회 2019 한국환경정책학회 학술대회논문집 Vol.2019 No.10

기업의 경영환경요인이 관리회계시스템에 미치는 영향에 관한 연구: 중소기업을 대상으로

이정은(JeongEun Lee),이찬호(ChanHo Lee) 한국산업정보학회 2022 한국산업정보학회논문지 Vol.27 No.3

본 논문에서 기업의 내외부 경영환경요인이 관리회계시스템 특성에 미치는 영향에 대해 분석하였다. 기업의 외부 경영환경요인으로 환경불확실성과 시장에서의 경쟁, 내부 경영환경요인으로 경영전략, 조직구조, 첨단 제조기술을 하위요인으로 구성하였고, 관리회계시스템 특성은 정보의 범위, 적시성, 통합성, 결합성 하위요인으로 구성하였다. 연구 결과를 요약하면 기업의 환경요인 중 환경불확실성이 관리회계시스템의 정보의 범위, 통합성, 결합성에 상대적으로 중요한 영향요인임을 확인하였고 적시성은 조직구조가 가장 영향을 주는 요인으로 나타났다. 다만, 시장에서의 경쟁은 관리회계시스템 특성에 영향을 미치지 못하는 것으로 나타났다. This study attempted to analyze the influence of both internal and external business environment factors on the characteristics of the management accounting system (MAS). For this, external business environment factors were divided into environmental uncertainty and market competition while internal factors were classified into management strategy, organizational structure and advanced manufacturing technology. In addition, the characteristics of the MAS were categorized into information scope, timeliness, integration and aggregation. The study results found the followings: Among business environment factors, environmental uncertainty had a relatively significant effect on the scope, integration and aggregation of information while organizational structure revealed the largest influence on timeliness. However, market competition had no particular effect on the characteristics of the MAS.

ERP시스템 품질이 시스템 사용만족도와 개인 및 조직성과에 미치는 영향

이정은(Lee JeongEun) 한국산업정보학회 2018 한국산업정보학회논문지 Vol.23 No.4

본 연구의 목적은 ERP시스템의 품질요인이 시스템 사용만족도와 개인 및 조직성과에 어떠한 영향을 미치는가를 실증적으로 조사 및 분석하였다. 기존 선행연구들이 시스템의 품질요인에 초점을 맞추고 연구한 반면, 본 연구는 설문지를 사용하여 ERP시스템을 채택한 기업에 있어서 품질요인과 사용만족도 및 기업성과간의 상호관련성을 조사 연구하였다. 특히 기존의 연구들은 시스템품질과 사용만족도 또는 조직성과간의 관련성 연구가 주류를 이루고 있는데 본 연구에서는 정보시스템품질을 시스템품질, 정보품질, 서비스품질 3가지로 분류하고 사용만족도 및 성과도 개인성과와 조직성과로 구분하여 각각의 관련성을 연구하였다는 데 의의가 있다. 연구결과는 다음과 같다. 첫째, ERP시스템의 품질요인의 시스템품질, 정보품질, 서비스품질이 각각 사용자만족도에 유의한 수준에서 정(+)의 영향을 미치는 것으로 확인되었다. 둘째, 시스템 사용만족도가 개인성과와 조직성과에 각각 유의한 수준에서 정(+)의 영향을 미치는 것으로 확인되었다. 또한, 수정지수를 이용한 수정모형에서 얻은 추가 가설인 ERP시스템의 서비스품질이 개인성과 및 조직성과에 각각 유의한 수준에서 정(+)의 영향을 미치는 것으로 확인되었다. The objective of this study is to investigate the effect of ERP system quality factors on the system use satisfaction and on personal and organizational performances. For achieving this objective, we investigated the interrelationship among quality factors, use satisfaction and business performance in the companies which operate the ERP system using questionnaires, whereas many previous studies focused on general quality factors such as the relationship between system quality and use satisfaction on organizational performance. The difference between our study and previous studies is that we classified the information system quality into three categories (system quality, information quality, and service quality) before analyzing the respective relationship among three identified variables (use satisfaction, individual performance and organization performance). The result of this study proved that the system quality, information quality, and service quality considered as the ERP system quality factors have a positive effect on user satisfaction level, respectively.