(100) 및 (111) 배향을 갖는 CaF₂ 단결정 기판의 결함 분석

최예진,강민규,이기욱,박미선,정광희,정해균,김두근,이원재,Ye-Jin Choi,Min-Gyu Kang,Gi-Uk Lee,Mi-Seon Park,Kwang-Hee Jung,Hea-Kyun Jung,Doo-Gun Kim,Won-Jae Lee 한국결정성장학회 2024 한국결정성장학회지 Vol.34 No.1

The CaF₂ single crystal has notable characteristics such as a large band gap (12 eV), excellent transparency over a wide wavelength range, low refractive index and dispersion. Due to these outstanding properties, CaF₂ single crystal has considered as a promising material for short-wavelength light sources in recent lithography processes. However, there is an inherent birefringence of the material at 157 nm and the resulting aberration can be compensated for through the combination of the (100) plane and the (111) plane. Therefore, it is necessary to investigate the characteristics according to the plane. In this study, we analyzed crystallinity, optical properties of commercial CaF₂ single crystal wafers grown by the Czochralski method. In particular, through chemical etching under various conditions, it was confirmed that the shape of etch pits appears differently depending on the plane and the shape and array of specific etch pits affected by dislocations and defects were examined.

2차원 TMDC 나노소재를 이용한 트랜지스터 소자 기반의 초정밀 알부민 센서 구현

최예진(Ye Jin Choi),이영택(Young Tack Lee) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6

텔레비전 가상광고의 유형과 크리에이티브에 관한 연구

최예진(Choi, Ye Jin),한상필(Han, Sangpil) 한국광고홍보학회 2014 광고연구 Vol.0 No.102

본 연구는 가상광고가 많이 등장하는 프로야구 중계 프로그램에 삽입되는 가상광고를 대상으로 내용분석을 실시하였다. 분석 유목은 경기장 및 경기 요소, TV 화면을 고려한 가상광고의 등장위치, 광고의 크기, 크리에이티브에서 청각적 요소와 시각적 요소, 카피 등이었다. 연구 결과, 연도별 가상광고 등장 위치의 빈도에 차이가 있는 것으로 나타났으며, 전체 가상광고 중‘외야 그라운드’와 ‘내야 배터리샷’의 빈도(26.6%)가 가장 높게 나타났다. TV 화면에 의한 등장위치에서는 하단 오른쪽에 나타나는 광고의 비율이 전체의 47.6%로 가장 높게 나타났으며, 특히 2013년에서는 74.7%를 기록하며 상당한 비중을 차지하였다. 등장시점은 이닝 진행 중(65.1%)의 빈도가 가장 높았으며, 크리에이티브 요소로서 시각적 요소 중 모델의 등장 여부는 연도별로 차이가 있었다. 또한 3D그래픽으로 제작된 가상광고(69.8%)가 2D 그래픽으로 제작된 광고(30.2%)에 비해 높은 빈도를 보였고 정적 이미지(19.5%)보다 동적이미지(80.5%)의 비율이 월등히 높았다. 제시형태에 있어서는 고정형(95.6%)이 이동형(4.4%) 보다 훨씬 높은 빈도를 보였고 카피 중에서는 레이블형(23%)과 뉴스형(12.9%)의 빈도가 높게 나타났다. 본 연구는 2010년부터 2013년까지 프로야구에 실제 집행된 가상광고의 내용분석을 통해 스포츠 경기에 삽입된 가상광고의 유형과 시각적 크리에이티브와 카피의 빈도를 살펴 본 것으로 이론적 기여도는 높지 않지만 향후 가상광고의 연구에 있어 기초자료로 사용될 수 있을 것으로 기대된다. Virtual advertising is one of the new advertising types which had got high attention because of its ability to reduce audiences’ negative reaction such as zapping. The effect of virtual advertising would be differed by when the advertisement exposes in the game situation or by how the advertisement looks like on the TV screen. Virtual advertising should show noticeable creative to viewers because it’s hard to have long message. The purpose of this study is to investigate the types and creative of virtual advertising affecting the effect of virtual advertising. For this purpose, the author conducted contents analysis using games of Korea Baseball league broadcasted 2010 to 2013. Analysis units are exposure location basis on game feature/TV screen, size of advertisement, auditory element, visual elements, and copy. The results of this study show that the frequency of exposure location is different by year. The most frequent exposure location is ‘outfield ground(26.6%)’and ‘right-bottom(47.6%)’on the TV screen. 65.1% of advertisements are shown ‘during the play.’ Appearance of model in advertisement as visual element of creative has difference by year, and this difference is significant(χ2(df)=124.340(3), p< .001). Advertisements made with 3D graphics(69.8%) appear more frequently than made with 2D graphics(30.2%), and moving image(80.5%) uses much more than non-moving image(19.5%). In the type of presentation, the frequencies of fixed type(95.6%) is much higher than moving type(4.4%). The frequencies of label type(23%) and news type(12.9%) are highly observed.

접이식 로봇팔의 태양광 패널 청소를 위한 조류 분비물의 클러스터링에 대한 연구

최예진(Ye Jin Choi),정슬(Seul Jung) 제어로봇시스템학회 2021 제어·로봇·시스템학회 논문지 Vol.27 No.12

This study presents clustering algorithms for the cleaning task of bird droppings on a solar panel using a foldable robot arm of a drone. Before the robot arm performs the cleaning task of bird droppings, a clustering task is required for a selective cleaning performance. In this study, two clustering algorithms were utilized: K-Means and self-organizing map (SOM). As the two algorithms exhibited different characteristics, appropriate strategies were required for cleaning different shapes of clusters to minimize the cleaning time. Accordingly, an efficient algorithm for selecting a suitable clustering method was proposed. The strategic algorithm was tested for several pattern examples on a solar panel.

환자 개인정보보호에 관한 치과위생사의 지식과 인식도 및 실천도에 관한 연구

최예진(Choi, Ye-Jin),강현경(Kang, Hyun-Kyung) 한국산학기술학회 2016 한국산학기술학회논문지 Vol.17 No.2

본 연구의 목적은 치과위생사들의 환자 개인정보보호에 대한 지식, 인식도 및 실천도를 파악하고자 하였다. 또한 치과위생사의 개인정보보호에 관련된 실천도에 영향을 미치는 요인을 파악하여, 의료기관에서 개인정보보호를 강화하기 위 한 방법을 마련하는데 도움이 되고자 시행되었다. 2014년 11월 7일부터 2015년 6월 30일까지 연구의 목적 및 취지 등에 대해 설명한 후 동의를 구한 뒤 자기기입식 설문조사를 시행하였다. 부산, 경남 소재의 치과위생사를 대상으로 210부가 자료분석 에 사용되었다. 그 결과, 10년 이상 근무경력자는 실천정도가 유의하게 높게 나타났으며(p<.05), 실장 이상의 직위에서 지식 이 높고(p<.01), 실천정도(p<.05)가 유의하게 높게 나타났으며, 10~20명의 근무자가 근무하는 병원(p<.05)에서 인식정도가 유 의하게 높게 나타났다. 지식, 인식도 및 실천도의 상관관계에서 지식이 높으면 인식도와 실천도에서 정의 상관관계를 나타내 었다(p<.01). 개인정보보호의 지식, 인식도가 치과위생사의 실천도에 미치는 영향을 조사한 결과, 지식(.231)과 인식도(.212) 는 실천도에 영향을 미치는 요인으로 나타났다. 치과위생사의 개인정보보호의 실천도를 높이려면 지식의 함양과 인식의 전 환이 필요함을 알 수 있었고, 개인정보보호에 대한 인식을 전환하기 위해서는 치과위생사 대상의 교육이 절실하다고 생각된다. This study intended to identify dental hygienists' knowledge and extent of awareness and performance of patient's personal information protection. In addition, this research was conducted to contribute to medical centers' preparation of measures to strengthen the personal information protection by identifying the factors affecting dental hygienists' extent of performance related to the patient's personal information protection. After explaining the purpose and meaning of the research to the survey participants and gaining their consent, a self-administered survey was conducted from November 7, 2014 to June 30, 2015. The data on 210 dental hygienists in Busan city and Gyeongsangnam-do province was used for analysis. As a result, in dental hygienists with more than 10 years experience, the extent of the performance was significantly high (p<.05). In positions higher than a senior manager, the extent of knowledge was high (p<.01) and the extent of performance was significantly high (p<.05). In hospitals with more than 10 to 20 workers, the extent of awareness was significantly high (p<.05). Regarding the correlation of knowledge and the extent of awareness and performance, a high level of knowledge showed a positive correlation of the extent of awareness and performance (p<.01). As a result of a survey regarding what effects dental hygienists' knowledge and extent of awareness of patient's personal information protection have on dental hygienists' extent of performance, it was found that knowledge (.231) and the extent of awareness (.212) are factors affecting the extent of performance. Therefore, to increase the extent of dental hygienists' performance of patient's personal information protection, there is a need to improve the knowledge of patient's personal information protection and change its awareness. To change the awareness of patient's personal information protection, there is a serious need to carry out education targeting dental hygienists.

그리드 포밍 인버터 동작에 따른 전력계통 운영 영향 분석

최예진(Ye-Jin Choi),홍인찬(In-Chan Hong),유연태(Yeun-Tae Yoo) 대한전기학회 2023 대한전기학회 학술대회 논문집 Vol.2023 No.10-2

접이식 로봇팔을 이용한 태양광 패널 청소 실험

최예진(Ye-Jin Choi),정슬(Seul Jung) 대한전기학회 2022 대한전기학회 학술대회 논문집 Vol.2022 No.7

K-means 알고리즘을 이용한 태양광 패널 표면의 조류 분비물 검출

최예진(Ye-Jin Choi),정슬(Seul Jung) 대한전자공학회 2020 대한전자공학회 학술대회 Vol.2020 No.11

The efficiency of solar power generation is greatly affected by the clean condition of solar panels. Pollution of solar panels due to bird’s droppings is to reduce power generation by about 10 percent. In order to increase the efficiency of solar power generation, cleaning solar panel is necessary. In order to automate the cleaning process by drones, in this paper, a K–mean algorithm is implemented to identify contaminated area in a solar panel so that a robot arm in drone can clean solar panels.

Surgical outcomes of pelvic floor disorders in women aged over 80 years: A 10- year, single-center experience

최예진 ( Ye Jin Choi ),전경철 ( Chun Kyoung Chul ),장두영 ( Doo Young Chang ),김영아 ( Young Ah Kim ),이응수 ( Eung Soo Lee ),전명권 ( Jeon Myung Kwon ) 대한산부인과학회 2011 대한산부인과학회 학술대회 Vol.97 No.-

최우수논문상 (생식내분비학)

최예진 ( Ye Jin Choi ),( Ji-ae Chang ),( Young Ah Kim ),( Sun Hee Chang ),( Kyoung Chul Chun ),( Jae Whoan Koh ) 대한산부인과학회 2016 대한산부인과학회 학술대회 Vol.102 No.-

Objective: To determine if neuroalament (NF) is expressed in the endometrium and the lesions of myomas and adenomyosis, and to determine their correlation. Methods: Histologic sections were prepared from hysterectomies performed on women with adenomyosis (n=21), uterine myoma (n=31), and carcinoma in situ of the uterine cervix. Full-thickness uterine parafἀn blocks, which included the endometrium and myometrium histologic sections, were stained immunohistochemically using the antibodies for monoclonal mouse antihuman NF protein. Results: NF-positive cells were found in the endometrium and myometrium in 11 women with myoma and in 7 with adenomyosis, but not in patients with carcinoma in situ of uterine cervix, although the difference was statistically not significant. There was no significant difference between the existence of NF-positive cells and menstrual pain or phases. The NF-positive nerve fibers were in direct contact with the lesions in nine cases (29.0%) of myoma and in five cases (23.8%) of adenomyosis. It was analyzed if there was a statistical significance between the existence of NF positive cells in the endometrium and the expression of NF-positive cells in the uterine myoma/adenomyosis lesions. When NF-positive cell were detected in the myoma lesions, the incidence of NF-positive nerve cells in the eutopic endometrium was significantly high. When NF-positive cell were detected in the basal layer, the incidence of NF-positive nerve cells in the myoma lesions and adenomyosis lesions was significantly high. Conclusion: We assume that NF-positive cells in the endometrium and the myoma and adenomyosis lesions might play a role in pathogenesis. Therefore, more studies may be needed on the mechanisms of nerve fiber growth in estrogen-dependent diseases.