Clinical utilization of radiation therapy in Korea between 2017 and 2019

Eunji Kim(Eunji Kim),Won Il Jang(Won Il Jang),Kwangmo Yang(Kwangmo Yang),Mi-Sook Kim(Mi-Sook Kim),Hyung Jun Yoo(Hyung Jun Yoo),Eun Kyung Paik(Eun Kyung Paik),Heejin Kim(Heejin Kim),Jaesun Yoon(Jaesun 대한방사선종양학회 2022 Radiation Oncology Journal Vol.40 No.4

Purpose: This study aimed to evaluate the clinical infrastructure and utilization of radiotherapy (RT) services in Korea between 2017 and 2019. Materials and Methods: We extracted the data of patients who underwent RT between 2017 and 2019 from the Health Insurance Review and Assessment Service. We further analyzed this data according to the diagnosis and treatment modalities of patients diagnosed with International Classification of Disease 10 (ICD-10) diagnostic codes C00–C97 and D00–D48. In addition, we collected statistics on RT facilities in Korea using a nationwide survey. Results: The total number of patients who received RT in 2017, 2018, and 2019 were 77,901, 81,849, and 87,460, respectively. The number of patients diagnosed with ICD 10 C- and D-codes in 2019 was 86,339, of whom 39,467 were men and 46,872 women. The rate of utilization of RT among cancer patients was 30.4% in 2017 and 2018 and 30.9% in 2019. In 2019, the most common types of cancers treated with RT were breast, lung, prostate, colorectal, and liver cancers. Regarding the RT infrastructure in Korea, there were 95 radiation oncology centers, 237 megavoltage (MV) teletherapy units, 35 brachytherapy units, and two proton accelerators in 2019. There were 4.5 MV teletherapy machines per million. Conclusion: The number of patients treated with RT has increased consistently from 2017 to 2019. As the number of patients with cancer increases, it is expected that the RT infrastructure will be further expanded in Korea.

Well-to-wheel analysis of hydrogen fuel-cell electric vehicle in Korea

Yoo, Eunji,Kim, Myoungsoo,Song, Han Ho Elsevier 2018 INTERNATIONAL JOURNAL OF HYDROGEN ENERGY - Vol.43 No.41

<P><B>Abstract</B></P> <P>This study provides methodologies, data collection and results of well-to-wheel greenhouse gas analysis of various H<SUB>2</SUB> production pathways for fuel-cell electric vehicle (FCEV) in Korea; naphtha cracking, steam methane reforming, electrolysis and coke oven gas purification. The well-to-wheel (WTW) greenhouse gas emissions of FCEV are calculated as 32,571 to 249,332 g-CO<SUB>2</SUB> eq./GJ or 50.7 to 388.0 g-CO<SUB>2</SUB> eq./km depending on the H<SUB>2</SUB> production pathway. The landfill gas (on-site) pathway has the lowest GHG emissions because the carbon credit owing to use landfill gas. The electrolysis with Korean grid mix (on-site) pathway has the highest GHG emissions due to its high emission factor of the power generation process. Furthermore, the results are compared with other powertrain vehicles in Korea such as internal combustion engine vehicle (ICEV), hybrid electric vehicle (HEV) and electric vehicle (EV). The averaged WTW result of FCEV is 35% of ICEV, is 47% of HEV, and is 63% of EV.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The range of well-to-wheel greenhouse gas emissions are 50.7–388.0 g-CO<SUB>2</SUB> eq./km. </LI> <LI> Landfill gas pathway has the lowest greenhouse gas emissions. </LI> <LI> Electrolysis with Korean grid mix pathway has the highest greenhouse gas emissions. </LI> <LI> The well-to-wheel results of naphtha cracking pathway is 61.6 g-CO<SUB>2</SUB> eq./km. </LI> <LI> Naphtha cracking pathway is suited for gas stations near the petrochemical complexes. </LI> </UL> </P>

Relationship between Airline's Distribution Services SNS Content and Customer Satisfaction

Eunji YOO,박소연 한국유통과학회 2020 유통과학연구 Vol.18 No.8

This study aims to examine the impact of characteristics of SNS content provided by airlines on customer satisfaction and to explore the effect of the personal characteristics of the customers which have a modulating effect on the relationship between content characteristics of SNS and customer satisfaction. The data were collected over a period of April 21. 2019. to July 21. 2019. for three months from the people who have experience using SNS provided by airlines. 225 samples were selected and used as final samples from a collection rate of 93.4 percent. Findings suggest that the characteristics of airline's SNS content which include a promotion, information, and communication showed a positive impact on customer satisfaction. The analysis of a modulating effect of individual characteristics on the relationship between the airline's SNS content characteristics showed that diversity pursuit propensity, innovation propensity, and information-seeking propensity control the relationship between characteristics of airline's SNS content which are publicity, information and customer satisfaction. And it was found that all three personal characteristics do not control the relationship between communication and customer satisfaction. Thus, airlines should use SNS more effectively to generate customer satisfaction and present marketing measures to help generate profits through consumer purchasing behavior. It is expected that the findings of this study will help airlines to utilize marketing implications for effective and practical marketing methods.

A Study on the Harmony of Traditional Colors according to Difference of Shades

Eunji Yoo,Kyurim Lee,YungKyung Park 한국색채학회 2017 AIC 2017 Jeju Vol.2017 No.10

The importance and value of traditional colors are constantly recognized, and traditional coloring studies have been based steadily on cultural properties. However, there is a lack of research on color harmony of the Traditional Ink-and-Wash Painting. In this study, the research was conducted with the hypothesis that the Traditional Ink-and-Wash Painting technique will affect the harmony of the traditional colors. To prove this hypothesis, eight different contrasts were given to each of the ten traditional color schemes, and there was a question about whether each color scheme was in harmony with the subject. As a result, the perception of color harmony was divided into positive and negative according to the difference in contrast of existing shades. In addition, there was a recognized as different color harmony depending on the presence or absence of the Traditional Ink-and-Wash Painting. The results of this study are expected to be useful data for the study of the traditional color scheme.

Strategic extended air stability of organolead halide perovskite nonvolatile memory devices

Yoo, Eunji,Pammi, S.V.N.,Kim, Kyu Young,Dang, Tran-Van,Eom, Ji-Ho,Choi, Young Jin,Yoon, Soon-Gil Elsevier 2019 Journal of alloys and compounds Vol.811 No.-

<P><B>Abstract</B></P> <P>In this study, we demonstrated long-term stability in the resistive switching (RS) properties of MAPbI<SUB>3</SUB> films, coated <I>via</I> a one-step chemical vapor deposition (CVD) method using no additives or polymers. The RS behavior of the CVD-fabricated memory devices compares favorably to that of spin-coated films; these devices exhibited reliably stable bipolar resistive switching properties for 30 days under ambient conditions, while spin-coated devices were stable for only 10 days. For further enhancement of air stability, a 20 nm-thick ZnO passivation layer was deposited on MAPbI<SUB>3</SUB> <I>via on-axis</I> and facing-target sputtered (FTS) techniques. The resistive random-access memory (ReRAM) devices with a ZnO passivation layer deposited <I>via</I> FTS technique exhibited extended air stability for 3 months under ambient conditions, whereas in the case of memory devices fabricated with an <I>on-axis</I> sputtered passivation layer, air stability was limited to 60 days. This extended air stability can be attributed to excellent step coverage and free of plasma damage during deposition. Memory devices fabricated <I>via</I> the CVD and FTS methods showed no significant variations at either set or reset levels of voltage and showed favorable levels in terms of both data retention and endurance performance with storage time.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Spin-coated memory devices are stable for only 10 days. </LI> <LI> CVD fabricated memory devices exhibited 30 days stability in air. </LI> <LI> Stable RS behaviour of FTS passivated devices with 3 months in air ambient. </LI> </UL> </P>

종묘제례악에 사용되는 전통악기 체험을 위한 스마트폰 기반 AR 콘텐츠 개발

유은지(Eunji Yoo),유정민(Jeongmin Yu) 한국컴퓨터정보학회 2019 한국컴퓨터정보학회 학술발표논문집 Vol.27 No.2

전환시대의 학교: 학교의 존재의미에 대한 시론적 고찰

유은지(Eunji Yoo) 한국교육사회학회 2021 교육사회학연구 Vol.31 No.4

본 연구는 사회에서 학교가 지닌 의미를 고찰하는 시론적 논의이다. 우선, 학교의 역사성을 살펴봄으로써 종적 흐름 속에서 학교의 의미가 어떻게 변했으며 사회에서 어떻게 받아들여져 왔는지를 탐색하였다. 학교교육의 표준화 및 정상화가 이뤄진 시기는 르네상스와 종교개혁기에 일어난 교육상의 일련의 전환을 거치고 나서부터이다. 이후 국가의 관리와 통제를 받는 사회제도로 굳혀진 학교교육은 근대 국민국가의 형성에 크나큰 기여를 하였다. 이어서 횡적 차원의 접근으로서, 학교와 학교교육을 주요 주제로 삼는 여러 교육사회학 이론을 살펴보았다. 구체적으로 기능주의 및 갈등주의 패러다임, 그리고 신교육사회학은 학교와 학교교육을 어떻게 인식하고 어떠한 점에서 학교와 학교교육을 기대하는지 혹은 비판하는지를 파악하였다. 그러나 사회가 급변함에 따라 기존의 교육사회학적 시각으로는 설명되지 않는 학교의 모습이 포착되므로, 이러한 변화에 걸맞은 새로운 시각으로 학교에 접근할 필요가 있다. 현재의 학교는 파놉티콘과 바놉티콘의 특징을 동시에 갖고 있을 뿐 아니라, 코로나19 팬데믹으로 인한 디지털 교육의 영향을 크게 받고 있다. 이에 본 연구는 현재의 시대적·사회적 배경에 꼭 필요한 학교, 더 나아가 학교의 본질적 의미에 충실한 학교를 소개해 보았다. 두 학교 모두 다양한 구성원으로 구성되어 있고 시공간을 차지하고 있다는 공통점을 가진다. 이러한 점은 학교가 전환시대에도 그 존재의미를 가짐을 역설한다. This study is a tentative discussion that examines the meaning of school in society. First, by examining the historicity of school, the ways in which the meaning of school has changed and the ways it has been accepted in society can be explored. It was not until a series of educational transitions during the Renaissance and Reformation that schooling came to be standardized and normalized. After that, schooling, which was established as a social system under the control of the state, greatly contributed to the formation of the modern nation-state. Then, as a horizontal approach, the major theories of sociology of education, dealing with school and schooling as main themes, are investigated. Specifically, the perception of school and schooling through the functional paradigm, the conflict paradigm, and the new sociology of education are identified. However, as society changes rapidly, there are some parts of school that cannot be explained by the existing theories of sociology of education. Therefore, it is necessary to approach school with a new perspective in accordance with this change. Today’s school not only has the characteristics of both panopticon and banopticon, but it is also greatly affected by digital education due to the COVID-19 pandemic. As such, this study introduces school that is essential for the current times and social background; furthermore, school that is faithful to the intrinsic meaning of school. The commonality of both schools is that they are made up of various members and occupy space and time. This emphasizes that school has a meaning of existence even in the transition era.

조선 시대 기록화의 디지털 스토리텔링 기반 확장현실 콘텐츠 전시기획 연구 :《화성원행도병》의〈서장대야조도〉를 중심으로

유은지(Eunji Yoo),권도형(Dohyung Kwon),유정민(Jeongmin Yu) 한국디지털콘텐츠학회 2022 한국디지털콘텐츠학회논문지 Vol.23 No.1

As the number of exhibitions about digital cultural heritage contents has been rising lately, the ways to show exhibitions using various technologies including Virtual Reality are constantly devised. However, there have been few studies on the design of the exhibition structure considering the arrangement of technical elements using the historical story and context of the contents. Therefore, in this paper, we propose an extended reality content exhibition plan based on the digital storytelling of the Joseon Dynasty documentary 《Hwaseongwonhaengdobyeong》 and 〈Seojangdaeyajodo〉. First, I identified the key elements of the documentary 〈Seojangdaeyajodo〉, analyzed the historical story, and then wrote digital storytelling. Based on this, after designing the exhibition structure of the extended reality content, the overall exhibition planning direction of the storytelling-based extended reality content 〈Seojangdaeyajodo〉 was presented according to the planned structure.

전과정 분석을 통한 국내 정유과정 및 내연기관 자동차의 미세먼지 배출량 분석

유은지(Eunji Yoo),김명수(Myoungsoo Kim),설은수(Eunsu Seol),최원재(Wonjae Choi),송한호(Han Ho Song) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11

1950년대 한국 고등학생들의 집단정체성에 대한 연구 : 학생 잡지 『학원』의 「독자문예」를 중심으로

유은지(Eunji Yoo) 중앙대학교 한국교육문제연구소 2020 한국교육문제연구 Vol.38 No.1

본 연구의 목적은 1950년대 한국 고등학생들의 집단정체성을 파악하는 데에 있다. 집단정체성은 타자와의 관계 속에서 드러나며 그 집단을 둘러싼 상황 및 환경, 타자와의 상호작용에 따라 재구성된다. 중등교육의 팽창으로 고등학생 집단이 본격적으로 형성되기 시작한 1950년대의 고등학생 집단정체성을 살펴보기 위하여 그 당시 학생들에게 가장 큰 영향력을 행사한 학생 잡지 『학원』의 「독자문예」에 투고된 고등학생들의 문학작품을 분석하였다. 분석 결과, 고등학생 집단정체성과 관련하여 학생 잡지 『학원』의 「독자문예」에 실린 고등학생 작품에서 드러난 타자와의 관계는 1) 또래와의 관계, 2) 가족과의 관계, 3) 국가와의 관계였다. 1950년대 고등학생 집단은 학교에 다니지 않는 또래에 대한 우월감, 자신을 위해 뒷바라지하는 가족에 대한 부채감과 더불어 전쟁으로 인해 폐허가 된 국가를 발전시켜야 한다는 책임감을 느꼈던 것으로 밝혀졌다. 본 연구를 시작점으로, 1950년대부터 지금까지 한국 고등학생들 집단정체성이 어떻게 바뀌어왔는지, 그리고 미래세대가 가져야 할 집단정체성은 무엇인지와 이를 위한 교육은 어떠해야 하는지에 대한 연구가 이어질 것으로 기대한다. The purpose of this research is to grasp the group identity of Korean high school students in the 1950s. It is regarded that group identity is formed and manifested in relationships with significant others. In addition, group identity is considered changeable in accordance with the circumstances around the group as well as the interactions with others. In order to examine the group identity of high school students in the 1950s when the group of Korean high school students began to form in earnest, this study analyzes the literary works of high school students in the student magazine 『Hakwon』 which exerted the greatest influence on students at that time. As a result of analyzing the literary works in 『Hakwon』 written by high school students in the 1950s, their group identity is mainly identified from three relationships 1) with their peers who are in the same age group, but not in high school, 2) with their family, and 3) with the nation. This study demonstrates that the group of Korean high school students in the 1950s had a sense of superiority over their peers who did not attend high school, a burden for their family, and responsibility for leading the nation which had been ruined by the war. It is expected that future research will figure out how the group identity of Korean high school students from the 1950s until now has changed. Furthermore, it will help to determine what kind of group identity and education are needed for the future generation.