β-Cyclodextrin에 의해 증가된 Neutral Red의 형광을 이용한 Promethazine의 분광형광법 정량

최서연,최희선,Choi, Seo-Yeon,Choi, Hee-Seon 대한화학회 2014 대한화학회지 Vol.58 No.2

분자동역학 전산모사와 미시역학 모델을 이용한 질화붕소 나노튜브/고분자 복합재의 역학적 물성 및 계면특성 예측

최서연,양승화,Choi, Seoyeon,Yang, Seunghwa 한국복합재료학회 2017 Composites research Vol.30 No.4

본 연구에서는 분자동역학 전산모사와 이중 입자 모델을 이용하여 질화붕소 나노튜브-폴리메틸메타크릴레이트 나노복합재의 기계적 물성과 계면특성을 규명하였다. 단일 벽 나노튜브가 고분자 기지에 함침된 가로등방성 나노복합재 단위 셀 구조를 모델링한 후, 각 방향으로의 일축인장 및 전단 전산모사를 통해 나노복합재의 강성행렬을 예측하였다. 또한 강성행렬의 방향 평균을 취해 나노튜브가 기지 내에 랜덤 분포하는 경우의 등방성 탄성계수를 도출하였다. 분자동역학 해석 결과를 계면의 완전 결합을 가정한 이중 입자 모델 예측해와 비교한 결과, 질화붕소 나노튜브와 고분자 기지간의 계면이 불완전한 것으로 확인되었다. 나노튜브 주위에 형성되는 흡착계면의 물성을 예측하기 위해 2단계 영역 분할 기법을 도입하였고 계면의 불완전 결합을 선형 스프링으로 묘사하였다. 그 결과 다양한 스프링 컴플라이언스 값에 따른 흡착계면의 물성을 역 해석을 통해 확인할 수 있었다. In this study, the mechanical behavior and interface properties of boron nitride nanotube-poly(methyl methacrylate) nanocomposites are predicted using the molecular dynamics simulations and the double inclusion model. After modeling nanocomposite unit cell embedding single-walled nanotube and polymer, the stiffness matrix is determined from uniaxial tension and shear tests. Through the orientation average of the transversely isotropic stiffness matrix, the effective isotropic elastic constants of randomly dispersed microstructure of nanocomposites. Compared with the double inclusion model solution with a perfect interfacial condition, it is found that the interface between boron nitride nanotube and polymer matrix is weak in nature. To characterize the interphase surrounding the nanotube, the two step domain decomposition method incorporating a linear spring model at the interface is adopted. As a result, various combinations of the interfacial compliance and the interphase elastic constants are successfully determined from an inverse analysis.

기업의 사회적 책임 활동 중 산업안전보건 분야에 대한 인식도

최서연 ( Choi Seo Yeon ) 아시아문화학술원 2016 인문사회 21 Vol.7 No.6

본 연구는 기업의 지속가능경영보고서(CSR)의 산업안전보건 분야에 대한 인식을 조사하여 보고서 발간 시 이해관계자의 요구에 부합하는 자료 제공에 그 목적이 있다. 본 연구 결과 기업의 사회적 책임은 노동조합의 인지도가 가장 높았고, `근로자의 생명과 건강보호 활동`을 가장 중요하게 인식하는 것으로 분석되었다. 산업안전보건분야의 평가 지표에 대하여 사업장 안전보건관리자와 노동조합의 80%가 인식하지 못하는 것으로 나타나 평가 지표에 대한 홍보 및 교육이 필요하다. 또한 사업장 안전보건 관리자는 건강 검진, 노동조합은 산업안전보건 위원회 구성, 안전보건 전문가는 건강관리항목에 대한 보완이 필요한 것으로 분석되었다. 본 연구는 지금까지 시도된 바 없는 지속가능경영보고서의 산업안전 분야에 대한 인식도와 평가 지표 보완에 대한 연구를 시도하였다는데 의의가 있다. This study was carried out to examine the recognition of the area of industrial safety & health of the Corporate Sustainability Reports(CSRs) and to provide the basic data that can offer persons concerned and the people request in publicating corporate reports in future. As a result, for the social responsibility of enterprises, the recognition by labor unions turned to be the highest and it was surveyed that they recognize the activities for the protection of laborers` life and health as the most important item. As it turned that about 80% of the places of business and the trade unions were not aware of the evaluation index for the area of industrial safety and health in the CSRs, it was shown that PR and education of the evaluation index would be necessary and for the evaluation index in the area of safety and health in the CSRs enterprises currently publish, safety managers in the places of business chose health examination, the labor unions, the Industrial Safety and Health Committee and safety and health experts, health management as the item that has to be complemented first. This study has a significance in that it suggested the recognition of the area of industrial safety and health in the CSRs and the items to be modified and complemented, which has never been attempted until now, and it is proposed that in future researches on the evaluation index in the area of industrial safety of the CSRs enterprises publish to prepare for an independent index not as an area of labor should be continued.

식품구매의 기대불일치가 만족 및 재구매의도에 미치는 영향에 관한 연구

최서연(Choi, Soe-yeon),김문명(Kim, Moon-Myoung),이은용(Lee, Eun-Yong) 한국관광레저학회 2014 관광레저연구 Vol.26 No.7

OWAS, RULA, REBA 등 인간공학적 평가도구를 이용한 미용업 종사자의 작업 자세 분석에 관한 연구 -헤어, 피부, 네일, 메이크업 분야-

최서연 ( Seo Yeon Choi ),허국강 ( Kuk Kang Hur ),박동현 ( Dong Hyun Par ) 한국미용학회 2013 한국미용학회지 Vol.19 No.3

Ergonomic evaluations for the working postures of beauty industry workers using three major checklist (OWAS, RULA, REBA) were conducted in this study. Basically, jobs (high risk jobs) belonged to risk levels 3 and 4 were identified. The main results in this study have been obtained as follows; 1) Drying(based on RULA results), shampooing(based on OWAS, RULA results), and colorin (based on RULA results), cutting(based on RULA results) were turned out to be the jobs in hair-cutting part belonged to the category of high risk jobs, 2) Leg(based on OWAS, RULA, REBA results), back(based on RULA results), abdomen(based on OWAS, RULA results), and arm(based on RULA results) were turned out to be the jobs in skin-care part belonged to the category of high risk jobs and face was not associated with high risk job based on any results of all three checklists, 3) Foot care(based on OWAS, RULA results) and hand care(based on RULA results) were turned out to be the jobs in nail-care part belonged to the category of high risk jobs and artificial nail was not associated with high risk job based on any results of all three checklists, 4) Face make-up for make-up part was not belonged to the category of high risk jobs. Specifically, MSDs risks for the jobs in skin-care part were turned out to be higher than those of other part. All the results obtained from this study could be used as baseline data for MSDs intervention of Beauty industry jobs.

문제도박자의 우울, 단도박자기효능감, 도박변화동기에 영향을 미치는 요인

최서연(Seo Yeon Choi),이미형(Mihyoung Lee),김희경(Hee Kyung Kim),이은진(Eun Jin Lee) 한국중독정신의학회 2018 중독정신의학 Vol.22 No.2

Objectives : The purpose of the present study was to identify the characteristics of problem gamblers and the associated factors involved in prediction of depression, gambling abstinence self-efficacy, and motivation for change. Methods : The present study was a descriptive survey research. Problem gamblers aged 20 years or older who received gambling counseling were recruited through the process of convenience sampling in South Korea. Data were analyzed by descriptive statistics, t-test, Analysis of Variance, and multiple regression. Results : Factors predicting depression were high problem gambling total scores (β=0.37, p<0.001), low attendance rates for counseling sessions(β=-0.37, p<0.001), and low satisfaction with the counseling (β=-0.11, p<0.05) in 268 problem gamblers. Factors predicting gambling abstinence self-efficacy were high attendance rates for counseling sessions (β=0.51, p<0.001), low problem gambling total scores (β=-0.22, p<0.001), and high satisfaction with the counseling (β=0.14, p<0.05). Factors predicting motivation to change gambling behavior were high attendance rates for counseling sessions (β=0.30, p<0.001) and low problem gambling total scores (β=-0.16, p<0.05). Conclusion : Problematic gambling scores were found to have a statistically significant correlation with depression, gambling abstinence self-efficacy, and motivation to change gambling behavior. It is hypothesized that to alleviate the depression of problematic gamblers and enhance gambling abstinence self-efficacy and for motivation to change gambling behavior, continuous counseling should be pro-vided along with early interventions.

IT 기반 지자체 안전보건 관리 정보 통합 시스템 구축 필요성에 관한 연구

최서연(Seo-Yeon Choi) 한국전자통신학회 2023 한국전자통신학회 논문지 Vol.18 No.4

사무직 근로자의 정기안전보건교육 적용범위 및 제도방안에 관한 연구

최서연(Choi Seo Youn),나민오(Na Min Oh) 사단법인 안전문화포럼 2021 안전문화연구 Vol.- No.11

본 연구는 현행 산업안전보건법에서 규정하는 사무직 종사 근로자(이하 사무직 근로자)의 정기안전보건교육 적용범위 개선 및 새로운 위험에 대한 교육내용 반영을 통해 사무직 근로자의 안전보건 확보를 위한 교육제도의 실효성 제고 방안을 제시하고자 한다. 이를 위하여 사무직 근로자의 업무 관련 위험요인과 산업재해현황, 사무직 근로자의 정기안전보건교육 제도 및 관계 법령을 분석하였으며, 정기안전보건교육의 적용범위와 정기안전보건교육의 개편방안을 제시하였다. 이에 사무직 근로자의 정기안전보건교육의 실효성을 높이기 위하여 업무환경의 위험성을 반영하여 사무직 근로자의 구분을 명확히 하고 교육시간을 차등 반영하며, 교육주기의 탄력적 운영과 사업장의 재량을 강화 방안, 산업재해 발생 시 교육시간 가중규정을 제안하였다. This study, the safety and health of clerical workers is improved by improving the scope of regular safety and health education for clerical workers (hereinafter referred to as clerical workers) stipulated in the current Industrial Safety and Health Law and reflecting it in the content of education on new risks. We will try to present measures to increase the effectiveness of the education system for securing. For this reason, we analyze the risk factors related to the work of clerical workers, the current situation of occupational accidents, the regular safety and health education system for clerical workers and related laws and regulations, and regularly apply the scope of safety and health education and regular safety and health education. Presented a reorganization plan. In order to enhance the effectiveness of regular safety and health education for clerical workers, the classification of clerical workers is clarified by reflecting the danger of the work environment, the time of education is reflected differentially, and the flexible operation of the education cycle is performed. Proposed a proposal to strengthen the discretion of business establishments and a provision for weighting education hours in cities where industrial disasters occur.

API 시퀀스 분석을 통한 악성코드 탐지

최서연(Seoyeon Choi),이서진(Seojin Lee),임을규(Eulgyu Im) 한국정보과학회 2023 한국정보과학회 학술발표논문집 Vol.2023 No.12

타액 속의 코티졸 정량 분석용 스마트폰 측정 시스템 개발

최서연(S.Y. Choi),양정식(J.S. Yang),신준철(J.C. Shin),정효일(H.I. Jung) 한국생산제조학회 2015 한국생산제조시스템학회 학술발표대회 논문집 Vol.2015 No.10