지속적인 재평가를 통해 최적화된 임시 보철을 최종 보철로 이행한 전악 CAD/CAM 고정성 수복 증례

이수지,우이형,배아란,노관태,Lee, Suji,Woo, Yi-Hyung,Pae, Ahran,Noh, Kwantae 대한치과보철학회 2017 대한치과보철학회지 Vol.55 No.4

보철적 의사 결정(decision-making)은 다양한 요소가 작용하므로 복잡하며, 치과의사가 분석한 자료를 바탕으로 환자와의 소통을 통해 이루어진다. 다양한 치료 옵션과 그에 따른 결과의 경우의 수가 많아짐에 따라 이러한 의사 결정 과정의 지속적인 재평가가 요구된다. 본 증례는 교합평면의 부조화를 보이는 환자의 교합평면을 재형성하는 치료 방법으로 고정성 보철 수복을 선택하고, 진단 납형 제작을 통한 치료계획의 수립으로 교합평면을 재설정하였다. 충분한 기간 동안 사용하면서 지속적인 재평가를 시행하여 얻은 임시 보철물을 CAD/CAM (Computer-aided design/computer-aided manufacturing)을 이용하여 지르코니아 최종 보철물로 이행하였다. 치료 종결 후 3개월 간의 주기적 내원을 통해 관찰하였을 때 만족스러운 결과를 얻었다. Prosthetic decision-making is complex because of various factors, and involves a combination of the individual dentist's interpretation of the objective clinical data and his or her interaction with the patient. Increasing therapeutic options and emerging outcome data demand the constant re-evaluation of our decision-making process. In this case, fixed prosthetic restorations were selected as a treatment method to reconstruct the occlusal plane of a patient with disharmonious occlusal plane. And the occlusal plane was re-established by establishing a treatment plan through diagnostic wax-up. Provisional restorations obtained by continuous re-evaluation for a sufficient period of time was replicated to definitive restorations using CAD/CAM technology. The results were satisfactory when they were observed through clinical follow-up for 3 months after the end of treatment.

인지 및 행동영역에서 교대 근무의 유해적인 영향 : 비판적 고찰

이수지,박창현,하은지,박신원,홍혜진,박수현,마지영,강일향,강한,송병훈,김정윤,김지은,Lee, Suji L.,Park, Chang-hyun,Ha, Eunji,Park, Shinwon,Hong, Haejin,Park, Su Hyun,Ma, Jiyoung,Kang, Ilhyang,Kang, Hahn,Song, William Byunghoon,Kim, Jungyo 대한생물정신의학회 2017 생물정신의학 Vol.24 No.2

Shift workers experience a disruption in the circadian sleep-wake rhythm, which brings upon adverse health effects such as fatigue, insomnia and decreased sleep quality. Moreover, shift work has deleterious effects on both work productivity and safety. In this review, we present a brief overview of the current literature on the consequences of shift work, especially focusing on attention-associated cognitive decline and related behavioral changes. We searched two electronic databases, PubMed and RISS, using key search terms related to cognitive domains, deleterious effects, and shift work. Twenty studies were eligible for the final review. The consequences of shift work can be classified into the following three categories extracted from the literature review : 1) work accidents ; 2) commuting accidents such as car accidents that occur on the way to and from work ; and 3) attendance management at work (i.e., absenteeism, tardiness, and unscheduled early departure). These cognitive and behavioral consequences of shift work were also found to be associated with sleep disorders in shift workers. Thus, improvements in the shift work system are necessary in order to enhance workers' health conditions, work productivity, and safety.

청소년기 자살에 대한 뇌영상 연구

이수지,김신혜,윤수정,Lee, Suji,Kim, Shinhye,Yoon, Sujung 대한생물정신의학회 2021 생물정신의학 Vol.28 No.2

Suicide is a leading cause of death worldwide, especially among adolescents and young adults. Considering this fact, it is imperative that we understand the neural mechanisms underlying suicidal thoughts and behaviors in youth from a neurodevelopmental perspective. In this review, we focused on the magnetic resonance imaging studies that examined the neural correlates of suicidal ideations (SI) or attempts (SA) in youth. We reviewed twenty-three cross-sectional studies reporting the structural and functional alterations in association with SI or SA among adolescents and young adults with various mental disorders. The previous literature suggests that the dorsolateral prefrontal cortex, anterior cingulate cortex, and ventral frontolimbic circuit, may play an important role in the pathophysiology of suicidal behavior in youth through altered top-down control over emotion and impulsivity. Future studies with a longitudinal design and using multimodal imaging techniques may be of help to identify novel therapeutic targets specific for youth with suicidal thoughts and behaviors.

UPLC-DAD-QToF/MS를 이용한 벚나무 속 과일의 페놀산 특성 비교

이수지 ( Suji Lee ),김헌웅 ( Heon-woong Kim ),이민기 ( Min-ki Lee ),이선혜 ( Seon-hye Lee ),게릴라아사메누 ( Gelila Asamenew ),최용민 ( Yongmin Choi ),박진주 ( Jin Ju Park ),이상훈 ( Sang Hoon Lee ),김정봉 ( Jung-bong Kim ) 한국환경농학회 2019 한국환경농학회 학술대회집 Vol.2019 No.-

Phenolic acids are widely distributed in plants. Especially, fruits may play a important role in preventing several diseases as phenolics rich source. In this study, phenolic composition and concentration of the Prunus genus were evaluated using ultra performance liquid chromatography with diode array detection and quadrupole time-of-flight mass spectrometric system (UPLC-DAD-QToF/MS). In positive ion mode, a total of 18 hydroxycinnamic acid derivatives (HCAs) and 1 hydroxybenzoic acid derivative were also identified and quantified from Prunus fruits. Among them, 15 phenolic acids were newly identified in the fruits of Prunus genus. One feruloyl acetylsucorse was also newly named from apricot: 3-O-feruloyl (2'-O-acetyl)sucrose (armenose A). Japanese apricot, apricot and cherry showed the highest amounts of HCAs. Overall, 3-O-caffeoylquinic acid was major phenolic acid in Prunus fruits. Various types of feruloyl acetylsucrose and p-coumaroyl acetylsucrose were identified in apricot and Japanese apricot, respectively. With previous studies, the catechin content was increased while flavonol content was reduced during the ripening stage of Japanese apricot, as harvest time late. It was also identified that HCAs content was also reduced from this research. It was considered that phenolic acids and flavonols were used for biosynthesis of catechins in maturing. On the basis of phenolic information, PLS-DA model showed different patterns by cluster in various genus and ripening stages.

한국 교육복지정책의 전개 및 향후 과제에 대한 고찰 : 이돈희의 『교육정의론』을 중심으로

이수지(Lee, Suji),김새론(Kim, Searon),전주현(Jeon, Jyhyun),한지예(Han, Jiyea),황정훈(Hwang, Junghun),엄문영(Eom, Moonyoung) 한국교육행정학회 2021 敎育行政學硏究 Vol.39 No.1

본 연구는 이돈희의 『교육정의론』에 제시된 교육복지와 교육정의의 개념을 이론적으로 고찰하고, 이를 바탕으로 국내 주요 교육복지정책이 정의롭게 운영되고 있는지를 분석하여 향후 교육복지정책에 요구되는 과제를 제시하였다. 『교육정의론』에 따르면 교육복지란 교육정의 실현의 근본적인 출발점으로서 모든 교육대상의 교육적 욕구 충족과 자아실현을 위해 유의미한 학습경험을 제공하는 것이다. 이러한 교육정의의 관점에서 무상교육, 방과 후 학교, 학습부진학생 지원, 교육복지우선지원사업, 교육소외 취약계층 지원, 고등교육 학자금 지원 정책 등 6가지 국내 주요 교육복지정책의 운영을 분석하였다. 그 결과 추후 교육복지정책에 요청되는 과제로 ‘교육소외 취약계층을 위한 교육복지의 양적 확대’, ‘교육기회의 유의미성 보장을 위한 교육복지정책’, ‘특수요소 성장을 지원하는 교육복지정책 예산 확충’, ‘수혜 대상 범위에 대한 공감대 형성’, ‘모든 학생을 대상으로 하는 교육복지정책 지향’을 제시하였다. 본 연구는 이돈희의 『교육정의론』에 관한 이론적 고찰과 정책 분석을 병행함으로써 ‘교육정의’에 대한 관심을 촉구하고, 교육복지정책이 나아갈 정의로운 방향 제시에 기여하고자 하였다. This study theoretically contemplated the concepts of educational welfare and educational justice presented in Lee, Don-hee"s 『Theory of Education Justice』, and analyzed whether major educational welfare policies in Korea are operating equitably, presenting the tasks required for future educational welfare policy making. According to the 『Theory of Education Justice』, educational welfare is a fundamental starting point for the realization of educational justice, providing meaningful learning experiences for the fulfillment of educational needs and self-realization of all educational subjects. From this perspective, six major domestic educational welfare policies were analyzed, including free education, after-school support policies, poor student support, education welfare priority support projects, support for the disadvantaged underprivileged, and higher education funding policies. As a result, the government proposed ‘Quantitative expansion of educational welfare for the underprivileged’, ‘Educational welfare policy to guarantee the significance of educational opportunities’, ‘Expansion of educational welfare policy budget to support growth of special demand’, ‘Forming a consensus for the scope of beneficiaries’, and ‘Oriented educational welfare policy for all students’. This study encouraged interest in ‘education justice’ by combining theoretical consideration of Lee, Don-hee"s 『Theory of Education Justice』 and contributed to the just direction for education welfare policy.

사용자 행위 분석 및 협업 필터링을 통한 개인 맞춤형 이벤트 추천 기법

이수지(Suji Lee),윤진경(Jinkyung Yun),노연우(Yeonwoo Noh),김민수(Minsoo Kim),임종태(Jongtae Lim),복경수(Kyoungsoo Bok),유재수(Jaesoo Yoo) 한국정보과학회 2015 한국정보과학회 학술발표논문집 Vol.2015 No.12

다단연소사이클 엔진의 시동과도해석 연구

이수지(Suji Lee),문인상(Insang Moon) 한국추진공학회 2014 한국추진공학회 학술대회논문집 Vol.2014 No.12

액체로켓엔진의 경우, 시동부터 정상상태에 이르는 천이구간 동안 엔진 시스템 내 변화를 예측하기가 쉽지 않다. 따라서 시동과도해석을 위한 수치적 연구가 필요하며 이를 시스템 설계에 반영함으로써 액체로켓엔진의 성공적인 개발과 함께 시간, 비용을 절감할 수 있다. 본 연구에서는 8톤급 다단연소사이클 액체로켓엔진의 파워팩에 대한 분석 프로그램을 개발하여 시동과도해석을 수행하였다. 해석을 위해 압력 및 유량 결정을 위한 밸런스 식과 함께 각 구성품의 수학모델을 구성하였고 이를 통해 시간에 따른 동특성을 파악할 수 있었다 When developing a liquid rocket engine, it is hard to estimate behavior of engine systems during start-up processes. Therefore, a numerical study is used widely to predict the start transient analysis. In addition, the numerical analysis can reduce time and expense for successful development of liquid rocket engine. In this work, a program for an analysis of 8 ton class staged combustion cycle engine powerpack was developed, and start transient analysis was performed. For the analysis, a mathematical model for each component was composed, and combined with balance equations that are used to determining the pressures and mass flowrates. With this analysis, dynamic characteristics according to time was also determined.

PHEV 제어 알고리즘 검증을 위한 가상 환경 시뮬레이터 구축

이수지(Suji Lee),심규현(Kyuhyun Sim),박찬호(ChanHo Park),김영갑(YoungGap Kim),황성호(Sung-Ho Hwang) 한국자동차공학회 2016 한국자동차공학회 학술대회 및 전시회 Vol.2016 No.11

가변추력 엔진용 핀틀 분사기 분석 및 개발동향

이수지(Suji Lee),구자예(Jaye Koo),윤영빈(Youngbin Yoon) 한국추진공학회 2017 한국추진공학회지 Vol.21 No.4

웹툰 2.0의 서비스 현황과 발전 방향

이수지(Suji Lee),전봉관(Bong Gwan Jun) 한국콘텐츠학회 2015 한국콘텐츠학회논문지 Vol.15 No.8

웹툰 시장이 성장하고 웹툰의 주요 수용 환경이 웹에서 모바일로 변화하는 추세에 따라, 플랫폼 사업자들은 기존의 웹툰에 다양한 디지털 기술을 접목하고 새로운 사용자 인터페이스를 적용하고 있다. 웹툰 변화의 주요한 흐름은 멀티미디어 효과를 적용하는 경우와 스마트폰으로 대표되는 모바일 환경에 최적화된 양식을 구현하는 경우로 대별된다. 본 연구는 그와 같이 변화된 웹툰을 ‘웹툰 2.0’으로 정의하며 초기 양식의 웹툰인 ‘웹툰 1.0’과 구분 짓는다. 이를 통해, ‘웹툰’이라는 단일 범주 안에서 서비스되고 있는 다양한 양식의 웹툰을 분류하는 새로운 기준을 제시한다. 또한 웹툰 서비스 사용자를 대상으로 한 실험을 통해, 현재까지 개발된 다양한 양식의 웹툰에 대한 사용자 만족도를 측정 및 분석하여 웹툰 2.0과 웹툰 1.0의 현황을 살펴본다. 이를 통해 본 연구는 웹툰의 변화 과정 앞에 수동적 수용자로 머물러 있던 사용자들의 의견을 적극 반영하여 웹툰 플랫폼 사업자, 작가, 사용자에게 모두 유효한 웹툰의 기술적, 미학적 발전 방향을 제시하고자 한다. The market of webtoon is expanding and the main users’ acceptance environment of webtoon is changing from web to mobile. Among this phenomena, platform companies combined various digital technologies and a new user interface to the webtoon. The major directions of change in webtoon are applying multimedia effects and actualize the optimized form for the mobile environment represented by a smartphone. This study defined these types of webtoon as ‘Webtoon 2.0’ and built a separate concept from Webtoon 1.0 which means the early form of webtoon. Through this, we propose a new standard in classifying various types of cartoons that are sporadically serviced to users. Also, through experiments with users, we checked the current status of webtoon 2.0 and webtoon 1.0 by quantitatively measuring and analyzing the degree of user satisfaction with the current webtoon. Through this, this study suggest technical and aesthetic development application of Korean webtoon which is available to platform operators, writers and users.