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메타버스의 수업활용에 관한 사용자 경험 분석 - 스페이셜(Spatial)을 중심으로 -
이예진,정광태,Lee, Yejin,Jung, Kwang-Tae 한국실천공학교육학회 2022 실천공학교육논문지 Vol.14 No.2
In this study, the user experience was analyzed from the learner's point of view, focusing on the metaverse platform 'Spatial'. SUS(System Usability Scale) was used to evaluate the usability of the metaverse platform 'Spatial' in a college class, and the Magnitude estimation technique was used to evaluate the immersion and satisfaction with the class. In addition, a questionnaire survey was used to collect user experience opinions on the use of 'Spatial' as a teaching tool. Looking at the usability evaluation results of the 'Spatial' system, the students evaluated the usability, immersion, and satisfaction quite positively. Looking at the user experience of metaverse platform 'Spatial', it was found that students highly valued Metaverse as an educational tool that can provide a place for many people to gather and communicate even in a non-face-to-face space. Compared to other online platforms, metaverse has advantages in ease of use, interaction, immersion, and interest. In particular, in addition to keyboard, touch, and display, interaction using the five senses such as voice, motion, and gaze was recognized as a great advantage. On the other hand, it was found that high openness, freedom, and interest factors can both promote learning and inhibit learning. Nevertheless, it is judged that the metaverse platform 'Spatial' can be effectively applied in college classes because it enables various interactions between instructor and learner or between learner and learner.
2D 패턴 축소율과 신축성 소재 특성이 3D 의복 변형에 미치는 영향
이예진(Yejin Lee),이병철(Byungcheol Lee) 한국생활환경학회 2012 한국생활환경학회지 Vol.19 No.2
2D pattern-making of stretch clothing is difficult because different elongations of fabrics on a 3D body make various clothing deformations which lead to change in original design and function of the clothing. Therefore, quantitative analysis of relations between 2D pattern and clothing deformation on a 3D body is an important topic of interest both for industry and academia. In this study, the effects of 2D pattern reduction rate and fabric elasticity were investigated by measuring how the points on a 2D pattern are correlated with the location change of the points on a 3D female dress form. 14 different sample trousers were tested with two different kinds of fabrics. The reference sample trousers have no ease allowance, and the other samples were made with different grading reduction rate based on the reference. The reduction rate was varied from 10 to 20% in the width direction and from 5 to 15% in the length direction. Representative points were selected in the 2D pattern and location changes of the points on a 3D dress form were measured. The correlations between 2D and 3D coordinates were analyzed by monitoring the location change of each point. The reduction of 2D pattern leads to different position change on the 3D dress form and the influences of pattern reduction rate is much higher than that of fabric property. Comparing to the width direction, the reduction rate of length direction shows much higher correlation along the length direction.
방선균과 항세균제의 혼용에 의한 과수화상병원균 억제 효과
이예진(Yejin Lee),곽연식(Youn-Sig Kwak) 한국농약과학회 2024 농약과학회지 Vol.28 No.1
This study examined the efficacy of an integrated approach for management of fire blight disease caused by the Gram-negative bacterium Erwinia amylovora. Fire blight, characterized by severe necrosis, poses a significant threat to plants in the Rosaceae family, including apples and pears. Despite efforts that include the use of chemical control, antibiotics, and copper-based pesticides, the pathogen’s high contagion rate poses a barrier to containment. In addition, along with the emergence of antibiotic resistance there are also environmental concerns associated with use of copper-based pesticides. To address these challenges, we examined the potential for combining antagonistic Actinomycetes with bactericides to enhance the inhibitory effects while minimizing the potential for emerging resistance. Of the seven Actinomycetes strains tested, five strains exhibited tolerance to bactericides. Furthermore, the results of combined treatment on plant tissues showed enhanced inhibition compared with individual treatments. These findings provide evidence of the utility of antagonistic bacteria as a complement to chemical control, offering a promising strategy for effectively suppressing E. amylovora and mitigating the development of resistance, thus supporting a comprehensive approach to management of fire blight.
이예진(Lee, Yejin),이지은(Lee, Jieun),손동화(Shon, Donghwa),변나향(Byun, Nahyang) 대한건축학회 2021 대한건축학회 학술발표대회 논문집 Vol.41 No.2
Korea’s agriculture faces difficulties such as a decrease in rural population, an aging population, a decrease in grain self-sufficiency, stagnation of agricultural income, and deterioration of climate change on the Korean Peninsula. Smart Farm is attracting attention as a solution to social problems. In order to spread smart farms, it is necessary to grasp the concept through classification. The purpose of this study is to collect, analyze, and classify smart farm cases. After collecting smart farm-related cases through preliminary research, literature, and Internet search, various standards are set and types are classified. The type classification criteria are the building ratio and the transmittance of the outer shell material, and single-layer-transmissive type, single-layer-non-transmissive type, and pylon-non-transmissive type are presented in the study.