Indefinite Relative Pronoun Whatever

Juyeon Cho(조주연) 담화·인지언어학회 2015 담화·인지언어학회 학술대회 발표논문집 Vol.2015 No.10

카메라 센서를 이용한 딥러닝 기법과 칼만필터 기반의 도심지 차선인식 및 추적 알고리즘 성능평가

조주연(Juyeon Cho),강연식(Yeonsik Kang) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6

자율주행차량은 다양한 센서를 기반으로 주변 상황을 인지하며 주행한다. 특히 차도에 존재하는 차선정보는 차량이 이동해야 할 방향을 결정해주는 중요한 정보다. 그러나 도심지 도로에서는 다양한 장애물과 복잡한 도로 마커로 인해 Rule 기반의 이미지 처리기법의 차선검출 방법으로는 한계점이 존재한다. 따라서 본 논문에서는 카메라를 통해 얻은 이미지 정보를 딥러닝 알고리즘과 이미지 프로세싱 기법을 통한 차선영역 검출의 기법을 동시에 적용하고, 칼만필터를 이용하여 강건하게 차선을 검출할 방법을 제안하고자 한다. 알고리즘의 전체 도식도는 그림 1의 좌측과 같이 표현할 수 있다. 복잡한 도로 환경에서 차선영역만을 추출하기 위해 사용한 딥러닝 네트워크는 LaneNet 알고리즘을 사용하였고, 그림 1 우측 상단과 같이 네트워크에서 마스크 네트워크만을 이용하였다. LaneNet 이미지결과를 통해서 거리계산을 위한 bird-eye-view, Homography 변환 과정을 진행하여 도로 영역에서의 좌표변환과정을 수행하였다. 또한 전처리 과정을 통해 추출한 Binary 형태의 이미지에서 Hough line detection 알고리즘을 통하여 좌측, 우측이라고 예상하는 차선을 추출하고 초기 Sliding window를 생성하여 LaneNet 결과 이미지에서 탐색을 수행하게 된다. 이미지에서 좌측, 우측 차선의 탐색이 종료되면 각 차선의 해당하는 픽셀 좌표를 저장하고 노이즈를 고려하여 RANSAC 알고리즘과 최소자승법을 이용한 3차 방정식의 차선정보를 얻을 수 있다. 마지막 단계로 좌측, 그리고 우측 차선에서 얻은 차선의 정보를 Clothoid road model기반의 칼만필터를 적용하여 강건한 차선추출을 진행하게 되며, 그림 1 우측 하단 그림과 같이 좌측, 우측 차선이 검출되는 것을 확인할 수 있다.

간호대학생의 임상실습 스트레스와 교수효율성이 임상실습 만족도에 미치는 영향

조주연(Juyeon Cho),전인희(Inhee Chun) 다문화건강학회 2019 다문화건강학회지 Vol.9 No.1

Purpose: The purpose of this study was to investigate the relationship between clinical practice stress, teaching effectiveness and clinical practice satisfaction of nursing students and to clarify the effect on clinical practice satisfaction. Method: Data were collected from 211 nursing students. Statistical analysis of independent t-test, ANOVA, Pearson’s correlation coefficients, and multiple regression analysis was performed through the SPSS 25.0. Results: The mean score for clinical practice stress was 3.22 (±0.51), for teaching effectiveness, 3.47 (±0.58), and for clinical practice satisfaction, 3.38 (±0.52) on a 5-point scale. The relationship between teaching effectiveness and clinical practice stress (r=-.26, p<.001), clinical practice stress and clinical practice satisfaction (r=-.36, p<.001) showed a significant negative correlation. The relationship between teaching effectiveness and clinical practice satisfaction (r=.70, p<.001) showed a significant positive correlation. The predictors on clinical practice satisfaction were teaching effectiveness, clinical practice stress, health status and grade. Our model explained 54.6% (F=64.154, p<.001). Conclusion: The finding of the study suggest that teaching effectiveness, clinical practice stress, health status and grade be considered when developing strategies to increase clinical practice satisfaction in nursing students.

Cemento-osseous dysplasia in need of careful examination : a case report

Juyeon Cho(조주연) 대한치과의사협회 2022 대한치과의사협회지 Vol.60 No.11

Cemento-osseous dysplasia (COD) is a fibro-osseous lesion of the maxilla and mandible, originating from a periodontal ligament. It resembles a periapical lesion such as a periapical abscess or a cyst in its early stage. Usually, the affected tooth : is vital and without symptoms. A healthy 35-year-old female was referred to the endodontic department for evaluation and endodontic treatment of an amalgam restored mandibular first molar with an apical radiolucency. Since the tooth was sensitive to a cold stimulus, chronic apical periodontitis was suspicious at first sight. But after clinical and radiographic evaluations, multiple periapical COD involving vital teeth of the mandible was diagnosed. No specific treatment of COD was scheduled except for renewing the pre-existing restoration. The present case is a confusing case since COD was associated with an asymptomatic tooth. Knowledge of the clinical features related to pulp vitality tests and cone-beam computed tomography (CBCT) helps determine the differential diagnosis between COD and a periapical lesion.

국내 결혼이주여성의 건강에 관한 간호연구 동향

함미영(Mi Yeong Ham),조주연(Juyeon Cho),전인희(Inhee Chun) 다문화건강학회 2023 다문화건강학회지 Vol.13 No.2

Purpose: This research analyzes the domestic nursing research trend on the health of married immigrant women. We further explore the directions for future research. Methods: A total of 44 articles published from 2011 to 2021 were re-viewed and analyzed according to the general characteristics, major categories of academic fields, and key-word themes of health domains. Results: Most studies were for quantitative research(79.55%), whereas only 20.46% of studies focused on qualitative researches. The major categories of academic fields, comprised medicine (56.83%), complex science (22.73%), engineering (11.36%), natural science (6.82%), and social science (2.27%). The majority of study subjects were from Asian countries, and Vietnam was the most common country of origin. Analysis by health area-revealed that the re-search key-words were in the order of physical health (79 times), social health (37 times), and mental health (16 times). Conclusions: Results of this study are meaningful since they identify the latest nursing research trends related to the health of married migrant women and present basic data for future nursing research directions through research paper analysis. Based on this study, we propose a systematic literature review follow-up study by expanding the search to in-clude various literature such as foreign journals and theses. In addition, it is expected that nursing research related to the health of married migrant women will be activated.

간호대학생의 문화적 역량에 대한 주관성 연구

전인희(Inhee Chun),조주연(Juyeon Cho) 다문화건강학회 2019 다문화건강학회지 Vol.9 No.2

Purpose: The purpose of this study was to analyze the structure and characteristics of nursing students personality-based on the cultural competence. Method: A Q-methodology was used to identify factors in nursing students personality-based on the cultural competence. The 28 selected Q-sample from each of 30 subjects were classified into a shape of normal distribution using a 7 point scale. The collected data was analyzed using the PC-QUANL program. Result: The analysis identified 4 types on the cultural competence of nursing students. Type I is cultural self-efficiency, type II is supplementation of cultural communication, type III is the need for cultural education, and type IV is the pursuit of cultural experience. Conclusion: Based on the results of this study, it is necessary to develop an efficient education program to enhance the cultural competence of nursing university students with differentiated educational strategies considering characteristics of these types.

동적 격자 지도를 이용한 딥러닝 기반 동적 객체 인식 기법 성능 개선

장하린(Harin Jang),조주연(Juyeon Cho),허세종(Sejong Heo),강연식(Yeonsik Kang) 한국자동차공학회 2022 한국 자동차공학회논문집 Vol.30 No.10

액화수소탱크용 STS316L소재 FCAW 용접 기초 연구

Jaewoong Kim(김재웅),Yujin Kim(김유진),Juyeon Jo(조주연),Taegon Yeo(여태곤),Kwang Hee Cho(조광희),Chang youl Park(박창열),Kwangseok Kim(김광석),Chang-min Pyo(표창민) 대한용접·접합학회 2023 대한용접학회 특별강연 및 학술발표대회 개요집 Vol.2023 No.5

복합소재를 이용한 경량소재 활용과 엔진 최적화

황태원(Taewon Hwang),국재호(Jaeho Kuk),이대훈(Daehun Lee),조주연(Juyeon Cho),김준형(Junhyeong Kim),허은균(Eungyun Heo),황선영(Sunyoung Hwang),이민기(Minki Lee),한성주(Sungju Han),장원석(Wonseok Chang),박기영(Giyoung Park),이성욱(Seangwo 한국자동차공학회 2018 한국자동차공학회 부문종합 학술대회 Vol.2018 No.6

In this paper, we deal with a monocoque body, carbon wheel and engine mapping for student formula vehicle. In the case of monocoque body, it was designed and manufactured based on torsional stiffness. By the torsional stiffness test, it is possible to make the monocoque body lighter than the steel tube frame structure and higher in torsional stiffness. Also in order to reduce the rotational inertia of the drive system, the existing aluminum wheels were replaced with the carbon wheels directly designed and made. We have developed a design with a higher lateral stiffness and a lighter weight than aluminum wheels and validated by lateral stiffness test using natural frequency. We are proceeding with mapping using 250cc engine and aftermarket ECU, and we optimized mapping using optimization program. As a result, we were able to shorten the time and create a more complete map.

정신분열증의 면역학적 이상에 관한 연구

조주연,박두병,이길홍 大韓神經精神醫學會 1999 신경정신의학 Vol.38 No.3

연구목적 : 본 연구의 목적은 1) 정신분열증 환자와 건강대조군간의 면역기능 차이 2) 정신분열증에서 증상심각도와 면역기능간의 상관관계 3) 정신분열증을 양성, 음성증상군으로 나누어 각각 대조군과의 면역기능 차이를 비교하는 것이다. 방 법 : 환자군은 DSM-IV에 의거하여 정신분열증으로 진단된 30명으로 검사전 최소 2주동안 약물을 복용하지 않았다. 대조군은 32명의 건강한 성인을 선택하였다. 환자군과 대조군에서 백혈구, 각 임파구 아형, 자연살세포 수와 백분율, 혈청 면역글로부린과 총 용혈보체 활성도가 조사되었다. 환자군은 PANSS에 의해 양성, 음성증상군으로 분류하였고 증상의 심각도는 BPRS에 의해 면역학적 검사당일 평가하였다. 결 과: 각 면역지표에 대해 환자군과 대조군간에 통계적 유의한 차이는 없었다. 증상의 심각도는 Ig A, 총임파구 수와 백분율과 정적 상관관계를 보였으며 CD8+세포수와 역상관관계를 보였다. 양성증상군에서는 T세포 백분율과 CD8+세포수가 대조군에 비해 유의하게 감소되었으며 Ig M은 유의하게 증가되었다. 음성증상군에서는 자연살세포 수와 백분율이 유의하게 감소되어 있었다. 결 론: 본 결과는 정신분열증의 면역학적 이상이 이 질환에 특이적이라기 보다는 증상의 심각도나 동질적인 증상군과 연관된다는 것을 나타낸다. 동질적인 환자군을 대상으로 면역기능의 좀 더 특이적인 지표가 정신분열증에서 면역체계의 변화를 알아내는데 요구될 것이다. Objective : The objectives of this study were to investigate 1) the difference of the immune function between schizophrenic patients and healthy normal control ; 2) the correlation between the severity of symptoms and immune functions in schizophrenia ; and 3) the differences between the positive and negative symptom group of schizophrenia and controls, respectively. Subjects and Methods : The subjects were thirty patients who met the DSM-IV criteria for schizophrenia and had undergone 2 weeks of drug free period before this study. Thirty-two healthy young adults were recruited for control. The following immunological functions were observed in the patients on admission and the normal control at the same day : WBC count, lymphocyte subpopulations(T cell, B cell, CD4+ cell, CD8+ cell, CD4+/CD8+ cell ratio), natural killer(NK) cell count and percentage, serum immunoglobulin levels(Ig G, Ig A, Ig M), total hemolytic complement activity(CH50). The schizophrenic patients were classified into positive and negative symptom group by Positive and Negative Syndrome Scale(PANSS) on the sampling day. The severity of symptoms was assessed by using the Brief Psychiatric Rating Scale(BPRS) in each day of immunological examinations. Results : No significant difference was observed by measuring several immunological functions from schizophrenic patients and normal controls. A significant positive correlation was established between symptom severity and Ig A, the number and percentage of total lymphocyte. In contrast a negative correlation between symptom severity and number of CD8+ cell was found. In the positive symptom group, the percentage of T cell and number of CD8+ cell were significantly reduced and Ig M level increased as compared to normal controls. In the negative symptom group, number and percentage of NK cell were decreased as compared to controls. Conclusion : These results suggest that alterations in immune system in schizophrenia do not appear to be a specific biological correlate of this disorder, but, rather, may be associated to severity of symptoms and homogenous symptom subgroup. Also more specific marker of immune function for the homogenous patients group will be required to assess some identified changes of immune system in schizophrenia.