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농촌 폐비닐 활용률 제고를 위한 수열합성 생성물인 에코 파우더(Eco-powder)의 기초물성 평가
최선미,이민철,김진만,손영곤,김남호,Sun-Mi Choi,Min-Chul Lee,Jin-Man Kim,Young-Gon Son,Nam-Ho Kim 한국자원리싸이클링학회 2024 資源 리싸이클링 Vol.33 No.1
This study aimed to improve utilization of the Class C vinyl waste generated in rural areas based on a preliminary investigation on the use of eco-powder, generated through pyrolysis, as a raw material for plastic. The efficiency of pre-processing treatments in controlling ash content of the generated eco-powder and its effect on the basic properties of manufactured plastic were evaluated. The basic properties included ash content of the compressed eco-powder at different levels of ash content, impact strength, flexural strength, and tensile strength. The experimental results confirmed that pre-processing improved the separation efficiency of soil particles and vinyl waste through physical impact. The eco-powder with ash content of less than or equal to 26% was found to satisfy the target performance during impact strength, flexural strength, and tensile strength evaluation. Thus, it was confirmed that the Class C vinyl waste, having low utilization and recovery rates, could be effectively utilized as a plastic raw material after optimum thermal treatment and physical processing using the eco-powder.
최선미,이장훈,정준오,선복근 한국공학교육학회 2015 공학교육연구 Vol.18 No.5
In spite that spatial ability has been recognized as an important element of academic achievement in engineering studies, researches on the topic are rather limited in Korea. In this study, the relationship between spatial visualization skill and academic achievement of engineering students was investigated based on the several variables such as gender, high school education background and college course achievement. The result showed that there were significant relevance between spatial visualization skill and gender, high school type, achievement of high school level math & physics, and college course work grade of computer graphic and capstone design. According the case study, from the entry time of engineering college, support programs to reinforce spatial visualization skill are required for lower skill groups such as female and graduate from art course in high school. Also, college curriculum such as Engineering graphics, Capstone design are substantial to improve spatial visualization skill. However, more diversified sample groups and research methods are required in order to draw in depth results.
QSCCII와 MBTI의 비교분석을 통한 사상체질의 성격유형 연구
최선미,지상은,정봉연,안규석,고병희,성현제 한국한의학연구원 2000 한국한의학연구원논문집 Vol.6 No.1
Objectives : The purpose of this study was to evaluate the psychological characteristics of Sasang Constitutions by MBTI(Myers-Briggs Type Indicator). Methods: This study was carried out on 154(101/53) of Oriental Medical College ar Kyunghee University. After determining the Sasang Constitutions(Soeumin, Soyangin, Taeumin) by QSCC II, the psychological characteristics of each group were analysed by MBTI. Results: 1) The findings show that there are 72.2% of agreement in discriminant analysis by MBTI question item for differentiating among Soeumin, Soyangin and Taeumin. 2) The findings show that there are 57.9% of agreement in discriminant analysis by MBTI score for differentiating among Soeumin, Soyangin and Taeumin. 3) Soeumin group showed more preference for Introversion. 4) Taeumin group showed more preference for Sensing. 5) Soyangin group tended to be Intuition, Perception types. Conclusion: The results show that there are significant relationships between Sasang Constitutions and MBTI psychological types. The findings indicated that MBTI could be useful tool to understand psychological characteristics of Sasang constitutions.