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열차폐코팅을 위한 희토류가 저감된 란타눔/가돌리늄 지르코네이트의 상형성 및 열물성
이수진,권창섭,이성민,오윤석,김형태,남산,김성원,Lee, Sujin,Kwon, Chang-Sup,Lee, Sung-Min,Oh, Yoon-Suk,Kim, Hyung-Tae,Nahm, Sahn,Kim, Seongwon 한국분말야금학회 2015 한국분말재료학회지 (KPMI) Vol.22 No.6
Rare-earth zirconates, such as lanthanum zirconates and gadolinium zirconates, have been intensively investigated due to their excellent properties of low thermal conductivity as well as chemical stability at high temperature, which can make these materials ones of the most promising candidates for next-generation thermal barrier coating applications. In this study, three compositions, lanthanum/gadolinium zirconates with reduced rare-earth contents from stoichiometric $RE_2Zr_2O_7$ compositions, are fabricated via solid state reaction as well as sintering at $1600^{\circ}C$ for 4 hrs. The phase formation, microstructure, and thermo-physical properties of three oxide ceramics are examined. In particular, each oxide ceramics exhibits composite structures between pyrochlore and fluorite phases. The potential of lanthanum/gadolinium zirconate ceramics for TBC applications is also discussed.
부모 동거 미혼자의 계층 의식 및 생활 만족도를 결정하는 요인: 부모 동거 미혼자의 성별에 따른 부모의 사회 경제적 자원의 효과를 중심으로
이수진,Lee, Sujin 대한가정학회 2021 Human Ecology Research(HER) Vol.59 No.4
The purpose of this study is to clarify the influence of parents' socio-economic resources on the class consciousness and life satisfaction of unmarried adult children living with their parents. Data from the 2<sup>nd</sup> year (1999) and 22<sup>nd</sup> year (2019) of the Korean Labor & Income Panel Study (KLIPS) were used. The study included individuals aged under 25-44 who were unmarried, lived with their parents, and had graduated out of final school. From the 2<sup>nd</sup> year (1999), data for 491 people were extracted, and from the 22<sup>nd</sup> year (2019), data for 978 people were extracted. The information on the fathers and mothers was obtained from the information on the households data, it was responded by the unmarried children. The main results are as follows. First, one of the characteristics of unmarried children living with their parents is that the average age was higher in 2019 than in 1999. Additionally, although they work and have their own income, they live in houses owned by their parents. Their levels of satisfaction with both the living environment and family relationships were high. It was found that the influence of parents' income increased in 2019 compared with 1999 in the class consciousness. As a factor that influences life satisfaction, the employment status of the father has a positive effect on the life satisfaction for men, whereas the employment status of the mother has a positive effect on the life satisfaction for women.
이수진,고은정,장기태,박성호,박재범,윤일수,Lee, Sujin,Ko, Eunjeong,Jang, Kitae,Park, Sungho,Park, Jaebeom,Yun, Ilsoo 한국ITS학회 2020 한국ITS학회논문지 Vol.19 No.5
Much time has passed since Korea's expressway congestion-threshold speed was revised in 2011. In the meantime, various expressway environments have changed owing to improved performance of vehicles, expanded operations of transport competition (i.e., the KTX), and increased speed limits along some expressway sections. In addition, the speed that expressway users expect to travel at is also increasing. Therefore, through a survey, this study investigates expressway users' perceptions of congestion, and reviews the adjustment of the expressway speed congestion threshold by analyzing expressway traffic flow. One result of the survey confirms that the threshold speed expressway users consider to be congestion has slightly increased. Analyzing traffic and speed data through a K-means algorithm found that the threshold speed for congestion is 60 km/h. In addition, assuming the congestion threshold speed increase from 40 km/h to 50 km/h and 60 km/h, frequently congested expressway sections are identified, determining that 50 km/h is appropriate as a congestion threshold for proper expressway mobility management. 2011년에 고속도로 정체 기준 속도가 개정된 후 많은 시간이 경과함에 따라 차량의 성능 개선, 경쟁 관계에 있는 고속열차 운행 확대, 고속도로 일부 구간의 제한속도 상향 등 다양한 고속도로 주행환경 변화가 발생하였고 고속도로 이용자의 이동 신속성에 대한 기대수준 또한 증가하는 추세이다. 따라서 본 연구에서는 설문조사를 통해 고속도로 이용자의 정체에 대한 인식을 조사하고, 고속도로 교통류 분석을 통해 고속도로 정체 기준 속도의 재설정을 검토하고자 한다. 설문조사 결과, 고속도로 이용자들이 인식하는 정체 기준 속도가 다소 높아진 것을 확인하였다. K-means 알고리즘을 통해 교통량 및 속도 자료를 분석한 결과, 서행과 정체의 분류 기준은 60km/h 수준인 것으로 나타났다. 또한 정체 기준 속도를 50km/h와 60km/h로 상향하는 것을 가정하여 고속도로 정체잦은구간을 산정해본 결과, 50km/h가 고속도로 이동성 관리를 위한 정체 기준 속도로 적절한 것으로 판단된다.
부모 동거 미혼자의 계층 의식 및 생활 만족도를 결정하는 요인 : 부모 동거 미혼자의 성별에 따른 부모의 사회 경제적 자원의 효과를 중심으로
이수진 ( Sujin Lee ) 대한가정학회 2021 Human Ecology Research(HER) Vol.59 No.4
The purpose of this study is to clarify the influence of parents’ socio-economic resources on the class consciousness and life satisfaction of unmarried adult children living with their parents. Data from the 2<sup>nd</sup> year (1999) and 22<sup>nd</sup> year (2019) of the Korean Labor & Income Panel Study (KLIPS) were used. The study included individuals aged under 25-44 who were unmarried, lived with their parents, and had graduated out of final school. From the 2<sup>nd</sup> year (1999), data for 491 people were extracted, and from the 22<sup>nd</sup> year (2019), data for 978 people were extracted. The information on the fathers and mothers was obtained from the information on the households data, it was responded by the unmarried children. The main results are as follows. First, one of the characteristics of unmarried children living with their parents is that the average age was higher in 2019 than in 1999. Additionally, although they work and have their own income, they live in houses owned by their parents. Their levels of satisfaction with both the living environment and family relationships were high. It was found that the influence of parents’ income increased in 2019 compared with 1999 in the class consciousness. As a factor that influences life satisfaction, the employment status of the father has a positive effect on the life satisfaction for men, whereas the employment status of the mother has a positive effect on the life satisfaction for women.
인터넷 서점 이용자의 독서 유형에 따른 추천 서비스 모델
이수진(Sujin Lee),이상민(Sangmin Lee),박호열(Hoyeal Park),전혜원(Hyewon Chon),박정아(Jungah Park) 한국HCI학회 2012 한국HCI학회 학술대회 Vol.2012 No.1
인터넷 쇼핑몰 상에서의 상품 추천 시스템은 전자 상거래가 시작된 이래로 중요한 연구 주제 중 하나이다. 인터넷 서점에서 제공되는 추천 서비스는 특정 책을 구매(보관)한 사람이 구매(보관)한 또 다른 책을 주로 추천하는 형식이다. 그러나 이러한 책의 추천 방식은 상품추천에 있어서 개별 사용자의 취향을 고려하기 어렵다는 한계점을 안고 있다. 이 연구에서는 인터넷 서점 이용자들을 대상으로 독서에 대한 니즈, 독서 스타일, 선호 장르에 따라 독서유형을 분류하였다. 그리고 각 유형 별 인터넷 서점에서의 정보탐색 및 책 구매 고려 요인의 특성을 탐색하였다. 마지막으로 추천 서비스에서 독서유형의 활용 가능성을 모색하였다. Recommender service of online bookstore is the important issue in E-commerce filed. Online book store offers a specific book to a user indicating that people that buy this book also purchase 'X' book. Although this type of recommender service is popular, it is not considered for each individual taste. The research has performed to explore the reader's type, important factor for purchasing and information behavior. According to that, recommender service on the basis of reader's style is suggested.
이수진 ( Lee Sujin ) 서울대학교 국어교육과 2022 先淸語文 Vol.50 No.-
This study aims to reveal the characteristics and principles of novel reading according to the change of the reader’s expected horizon, especially focusing on gender awareness. According to Jauß’s receptive aesthetics, experience and evaluation on texts change along the readers’ horizon of expectations as the time goes by. In particular, this study seeks to pay attention to the “gender awareness,” which is an important agenda item in modern society, among other things. By applying Said’s concept of secular criticism, it is suggesting the concept ‘reading novels according to changes in reader’s Gender Awareness-Expectation Horizon’, which explains the reader’s performance of reorganizing the existing order in the text and securing the validity of their interpretation by meditating between the reader’s current horizon and the past horizon in the text. In this process, the content of desirable gender awareness cultivated through novel education was taken as a reflection of the problem of gender representation in novel texts and aiming for a new aesthetic of representation, based on Judith Butler’s gender theory. The component of novel reading education according to changes in expectations are summarized as ‘Overcoming the dichotomy of genre aesthetics and political correctness’, ‘Understanding the relationship between novel’s representation and gender awareness’, and ‘Reassessment of literary history significance through the rereading of blackouts’ and these characteristics are realized through the reading of learning readers at the classroom site. Based on these theoretical discussion, the following reading principles were established from the interpretive texts of professional readers. : ⅰ) the perception of discomfort with tests ⅱ) the distance adjustment through the reconstruction of text ⅲ) the convergence of horizon through re-meaning of text. Based on principles, it was confirmed that ‘reading novels according to changes in readers’ horizon of expectations’ was found at a lower level than that of professional readers, but also found in learning readers’ reading patterns. This study is meaningful in that it suggests the possibility of the readers’ horizon of expectations, particularly focusing on gender awareness which is a recent social agenda, as a meaningful resource for interpretation in literary education. It is also meaningful in that the learning readers played a role in the composition of literary history through the dialogues between the learning readers and discourse of preceding interpretations. In addition, when considering the various horizon of expectations conflicted in the modern society, the learning readers do not easily exclude other people’s opinions or show a negative and violent attitude toward others, and have a logical and ethical opinion through the experience of validating the interpretation of the novel.