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키조개(Atrina pectinata)를 이용하여 양식한 흑진주의 특성평가
이정임,김판채,Lee, Jeong-Im,Kim, Pan-Chae 한국결정성장학회 2008 韓國結晶成長學會誌 Vol.18 No.5
진주는 유기질 보석의 일종으로서, 광산에서 발굴하는 보석이 아니라, 연체동물(Mollusc)의 내부에서 생광물화(biomineralization)의 결과로 얻어지는 고부가가치 상품이다. 이러한 진주를 생산해 낼 수 있기 위해서는 연체동물 내부의 패각 안쪽에 진주층(nacre)이 존재해야 하는데, 이에 본 연구에서는 기존의 진주양식에 사용되지는 않지만, 패각 안쪽 진주층이 두텁고 아름다운 색을 지니고 있어 충분히 진주 양식의 가능성을 보이는 키조개(Atrina pectinata)를 이용하여 새로운 양식 진주를 개발하고자 조사, 분석하였다. 주사전자현미경을 통해 키조개(Atrina pectinata)를 모패로 사용하여 양식된 흑진주의 진주층을 관찰한 결과, 이매패 진주층에서 나타나는 Aragonite형 탄산칼슘 층의 특징적인 다각형 판상구조가 관찰되였다. 또한 구체적인 특징을 알아보기 위해 분석한 결과, ED-XRF를 통해 해수 진주의 특징적 원소가 검출되었고, Raman 분석에서는 Aragonite의 특징적 $1083cm^{-1}$, $705cm^{-1}$ peak가 검출되었다. 그러나, UV-Vis 스펙트럼 분석에서는 흑접패(P. margaritifera) 흑진주와는 다른 요인에 기인하는 발색 양상임을 예상하게 했으며 이는 흑진주를 생산하는 모패의 종이 다르기 때문으로 생각된다. Pearl is the organic gemstone which does not come from mines but from the biomineralization inside mollusc. Mollusc with nacre on inner surface of the shell is inevitable to make pearl. In this paper we researched and analyzed the pearls cultured using Pen shell (Atrina pectinata) which is not used in pearl farming industry but has potential to make pearls because it has thick and beautiful nacre inside the shell. SEM analysis was conducted to reveal the pattern of nacre on the Atrina pectinata pearl. Specific characteristics as sea-water pearl are detected by further analysis with ED-XRF. Aragonite specific peaks such as $1083cm^{-1}$ and $705cm^{-1}$ were shown by Raman analysis. UV-Vis analysis of Atrina pectinata pearl showed different pattern of spectrum compared with Pinctada margaritifera pearl. The reason for this discrepancy is assumed by the metabolic difference of each species.
간호대학생의 인지적 유연성과 이러닝 디지털 리터러시가 학습몰입에 미치는 영향
이정임,김수올,Jeongim Lee,Su Ol Kim 한국기초간호학회 2023 Journal of korean biological nursing science Vol.25 No.2
Purpose: The purpose of this study was to identify the impact of cognitive flexibility and e-learning digital literacy on the learning flow of nursing students who had experienced e-learning. Methods: The research design for this study was a descriptive survey using convenience sampling. Data were collected using online questionnaires completed by 134 nursing students in Andong city and Pocheon city. The data were analyzed using percentages, mean values, standard deviations, Pearson's correlation coefficients, and multiple regression with SPSS for Windows version 22.0. Results: Positive correlations were found between learning flow and e-learning digital literacy (r = .43, p < .001), between learning flow and cognitive flexibility (r = .52, p < .001), and between e-learning digital literacy and cognitive flexibility (r = .65, p < .001). In the multiple regression analysis, cognitive flexibility (β = .42, p < .001) was a significant predictor that explained 27.8% of variance in learning flow. Conclusion: The results of this study show that cognitive flexibility is a factor influencing learning flow in nursing students. Based on the results of the study, educational programs aiming to improve learning flow should include methods that improve cognitive flexibility.
동적전압보상장치를 위한 양방향 충/방전 시스템의 디지털 제어
이정임(Jung-Im Lee),이종현(Jong-Hyun Lee),정안열(An-Yoel Jung),이춘호(Choon-Ho Lee),박종후(Joung-Hu Park),전희종(Hee-Jong Jeon) 전력전자학회 2009 전력전자학술대회 논문집 Vol.2009 No.2
양방향 DC-DC컨버터는 일반적으로 아날로그방식이 사용되고 있다. 그러나 충·방전기로 사용하게 되면 모드전환 시 과도응답특성이 좋지 않은 문제가 있다. 이에 대한 대안으로 디지털 제어기를 사용하게 되면 진보된 알고리즘들을 이용하여 시스템의 성능을 향상 시킬 수 있다. 본 본문에서는 전기이중층 콘덴서(EDLC)를 이용한 동적전압 보상장치(DVR)의 양방향 충/방전 시스템을, Buck/Boost 양방향 컨버터를 이용하여 구현하고, DSP(TI사 TMS320F28335)를 이용한 디지털 제어기를 적용하였다. 모의실험 및 하드웨어를 구성하여 실험한 결과, 양방향 시스템의 과도응답특성 개선과 시스템 성능 향상을 보여준다.
보문 : 신체인식과 신체만족도에 따른 치수 관련 위험지각 및 의복행동에 관한 연구 -인터넷 패션 소비자를 대상으로-
이정임 ( Jeong Yim Lee ) 한국의류학회 2011 한국의류학회지 Vol.35 No.5
This study first examines the effect of perceived body characteristics, satisfaction with body characteristics on perceived size related risk, and internet shopping clothing behaviors; in addition, it also examines the effect of the perceived size related risk on clothing behaviors. A questionnaire was conducted with responses from 219 female students, aged 19 to 25. Data was analyzed by frequency analysis, correlation analysis, ANOVA and Duncan test. The findings suggest that a consumer satisfied with body characteristics has active clothing behaviors to improve her appearance or body image. The effects of perceived body characteristics and satisfaction with body characteristics on perceived size related risk are also identified. The perceived size related risk increases when the size information of an internet shopping mall is insufficient compared to the situation when the consumer is not satisfied with her body characteristics. The meaningful differences of clothing behaviors according to extent of perceived size related risk are identified.
보문 : 패션 기업의 CSR 활동에 대한 인지적 적합성이 소비자 추천 및 구매의도에 미치는 영향
이정임 ( Jung Im Lee ),신수연 ( Su Yun Shin ) 한국의류학회 2011 한국의류학회지 Vol.35 No.7
There is an increasingly fierce competition in the current fashion industry due to equalized technology, a shortened fashion cycle and changing lifestyle; however, it is not easy to map out successful marketing strategies that influence the outcome of business administration. This study discussed the importance of changing environments for the fashion industry and of CSR activities. The findings of the study were as follows. First, consumers who found the fashion company to perform more appropriate CSR activities rated its CSR activities more favorably. Second, consumers who considered the company`s CSR activities more suitable for themselves viewed the CSR activities more favorably. Third, consumers who rated a fashion company`s CSR activities more favorably showed a more favorable attitude to the company. Fourth, consumers who viewed a fashion company`s CSR activities more favorably had a greater intention to recommend the company. Fifth, consumers who viewed a fashion company`s CSR activities more favorably had a more buying intention for the company. Sixth, the consumers who took a more favorable attitude to a fashion company had a stronger recommendation intention for that fashion company. Seventh, the consumers who showed a more favorable attitude to a fashion company had a bigger buying intention. Eighth, the consumers who had a greater recommendation intention for a fashion company had an increased buying intention as well.
친환경 전력저장장치의 충/방전 제어를 위한 시스템 개발
이정임(Jung-Im Lee),이종현(Jong-Hyun Lee),정안열(An-Yoel Jung),전희종(Hee-Jong Jeon) 전력전자학회 2009 전력전자학술대회 논문집 Vol.2009 No.1
활성탄을 사용한 친환경 및 고수명ㆍ고품질ㆍ저가격의 EDLC의 용도 증가에 따라 이의 충ㆍ방전 제어시스템의 개발이 요구 되고 있다. 전기자동차, 전력설비, 신재생에너지의 전력변환장치, 분산형 전원시스템 분야에 많이 응용이 되는 EDLC는 충ㆍ방전장치에 의해 효율과 수명에 직접적인 영향을 받기 때문에 정전류 충전, 정전압 방전 제어를 수행해야 한다. 본 논문에서는 종래의 EDLC를 활용한 충ㆍ방전 제어시스템의 효율 극대화를 위해 특히 충전 시는 정전류원에 의한 벅-컨버터를 그리고 방전 시는 높은 전압에 의한 부스트-컨버터를 적용하여 개발한 EDLC 정전류 제어회로 설계 및 최적 제어 시스템에 따른 실험결과를 제시 한다.
이정임(Jeong-Im Lee),이기영(Ki-Young Lee),송미영(Mee-Young Song),김동영(Dong-Young Kim),고재경(Jae-Kyung Koh),박은진(Eun-Jin Park) 경기연구원 2006 경기논단 Vol.8 No.2
This paper aims to explore the prospect and challenges of environmental policy faced by Gyeonggi Province and to provide a future policy orientation to cope with them. A recent lift of the development ban on the ‘green belt’ area as well as devolution and the balanced national development policy are expected to double the development pressure in the region, while the growing public concern in the quality of life and amenity will create a high demand on the natural environment. Global environmental regimes such as Kyoto Protocol and WEEE will also influence the local environmental policy. Drawing on the changing conditions of environmental policy at the national and local level, seven tasks to be addressed by Gyeonggi Province are suggested; ⅰ) introduction of the concept of regional environmental capacity and total maximum load system of air and water pollutants including minimum requirement of green space area, ⅱ) establishment of comprehensive environmental preservation plan and harmony of city planning and environmental planning, ⅲ) creation of a regional blue-green network along riverside, green space and the coast, ⅳ) a resource-circulating society building, ⅴ) establishment of green governance and conflict management system, ⅵ) construction of an eco-industrial complex, ⅶ) formulation of a climate protection program. In conclusion, how to balance development and environmental conservation and to practice “sustainable development” in reality through an integrated pollution control and precautionary measures will be the biggest challenge in the region. It should also be emphasized that green governance based on partnership and participation among residents, business and local administration is an important way to create a better life and to secure sustainability in the long run.