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보육교사의 전문성 지원환경과 교사효능감 간의 관계에서 전문성 인식의 매개효과
최예원(Choi, Ye-Won),조규판(Cho, Gyu-Pan) 동북아시아문화학회 2019 동북아 문화연구 Vol.1 No.59
The purpose of this study is to investigate the mediating effect of child care teachers" professional perception on the relationship between professional learning environment and their efficacy as teachers. For the purpose of the study, a total of 207 copies of the questionnaire were distributed to teachers in Busan, and the final 190 teachers" data were analyzed. Three different inventories were utilized. One was a professional perception inventory consisting of 3 domains and 55 items, the second was a teacher efficacy inventory consisting of two domains and 25 items, and the third was a professional learning environment inventory consisting of 4 domains and 36 items. In order to investigate the relationship of each variable, we conducted a correlation analysis and performed hierarchical regression analysis to verify the mediating effect of professional perception on the relationship between professional learning environment and teacher efficacy. The conclusions of this study are as follows. First, there were significant correlations among professional learning environment, professional perception and teacher efficacy. Second, the professional perception completely mediated the relationship between professional learning environment and teacher efficacy. The results of this study show professional perception should be considered as an important factor to promote professional learning environment of child care teachers and their efficacy. In other words, teacher efficacy can be developed through the enhancement of professional perception and the improvement of professional learning environment by providing various training programs for child care teachers.
최예원(Choi Ye Won),김찬욱(Kim Chan Wook),최미주(Choi Mi Joo),이윤정(Lee Yoon Jeong),황지영(Hwang Ji Young),박은주(Park Eun Joo),전하용(Jeon Ha Yong) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.11
최근 코로나 팬데믹으로 인해 배달음식을 즐겨 먹는 사람들이 증가하고 있다. 이로 인해 운동량 부족과 고칼로리 음식 섭취 등으로 불균형적인 영양소가 섭취가 되고 있다. 사람들의 올바른 식생활을 위해서 개인 식생활 데이터를 수집하고 분석해서 머신러닝을 이용해서 개인 맞춤형 식단을 제공하고자 한다. 본 논문에서는 머신러닝에 사용될 사람들의 식생활 데이터를 수집목적으로 개인의 식생활을 기록해서 데이터베이스에 저장하는 모바일 어플리케이션을 개발한다.
ERW 용접 전후 API X70 라인파이프강의 미세조직과 기계적 특성 변화
오동규 ( Dong-kyu Oh ),최예원 ( Ye-won Choi ),신승혁 ( Seung-hyeok Shin ),정한길 ( Han-gil Jeong ),곽진섭 ( Jin-sub Kwack ),황병철 ( Byoungchul Hwang ) 한국열처리공학회 2022 熱處理工學會誌 Vol.35 No.4
Variations in the microstructure and mechanical properties of API X70 steel processed by piping, electrical resistance welding (ERW), and post seam annealing (PSA) are investigated in this study. In the welding zone, some elongated pearlites are formed and grains coarsening occurs due to extra heat caused by the ERW and PSA processes. After the piping, the base metal shows continuous yielding behavior and a decrease in yield and impact strengths because mobile dislocation and back stress are introduced during the piping process. On the other hand, the ERW and PSA processes additionally decreased the impact strength of welding zone at room and low temperatures because some elongated pearlites easily act as crack initiation site and coarse ferrite grains facilitate crack propagation. As a result, the fracture surface of the welding zone specimen tested at low temperature revealed mostly cleavage fracture unlike the base metal specimen. (Received July 1, 2022; Revised July 25, 2022; Accepted July 28, 2022)
홍종선(Chong Sun Hong),길주현(Ju Hyun Gil),이윤희(Yoon Hee Lee),최예원(Ye Won Choi) 한국데이터정보과학회 2022 한국데이터정보과학회지 Vol.33 No.3
울트라마라톤은 마라톤 거리보다 긴 달리기 종목으로 300키로 이상인 국토 횡단과 600키로 이상인 국토 종단 그리고 세계적으로는 최대 3,100마일 (4,960키로) 등의 다양한 종목이 있다. 본 연구는 국내 동호회에서 보유하고 관리하는 울트라마라톤 기록자료를 통계분석한다. 총 완주자는 52명으로 최연소는 34세, 최고령은 74세이며, 총 완주횟수는 2,921번으로 개인당 평균 56번 완주하였다. 본 연구의 자료에서 울트라마라톤의 거리는 50키로부터 최장거리로 1,504키로이다. 수집하기 어려운 극한 운동인 울트라마라톤 기록자료의 분석은 스포츠 통계학 등의 연구에 큰 기대효과가 있다. 울트라 종목별 완주횟수와 기록을 완주기간과 연령별로 분석한다. 또한 울트라 완주자를 군집분석을 이용하여 세 개의 군집으로 나누고, 군집별로 분석하였다. The ultra marathon is a running event longer than the marathon distance, and there are various events such as crossing the country over 600㎞, and up to 4,960㎞ in the world. This study statistically analyzes ultra marathon record data which are held and managed by a certain marathon club. The total finishers are 52, with the youngest being 34 years old and the oldest being 74 years old. The number of finishes are 2,921, with an average of 56 completed per individual. The ultra distances in this data are from 50㎞ to 1,504㎞, the longest. Analysis of the valuable data of the few enthusiasts who enjoy extreme sports around the world is statistically significant based on Statistics in Sports. Analyze the records and number of finishes by ultra distances, exercise periods and ages. In addition, ultra finishers were divided into three groups using cluster analysis and analyzed by these clusters.