호접란 기내배양시 광도와 CO₂ 및 배지조성이 생육에 미치는 영향

이정선(Lee jeong-sun),박소영(Park so-young),백기엽(Paek Kee-Yoeup) 한국원예학회 1999 원예과학기술지 Vol.17 No.2

착륙장치 작동기 내부 잠금장치 피로해석

이정선(Jeong Sun Lee),강신현(Shin Hyun Kang),장우철(Woo Chul Jang),이승규(Seung Gyu Lee),오성환(Seong Hwan Oh) 대한기계학회 2012 大韓機械學會論文集A Vol.36 No.1

착륙장치 접개 작동기는 항공기 이착륙 시 착륙장치를 항공기 동체 내로 접어 올리거나 동체 밖으로 펼쳐 내려주는 역할을 한다. 접개 작동기 내부에는 착륙장치 펼침 상태에서 외란에 의해 착륙장치가 접히게 되는 것을 방지하기 위한 별도의 잠금장치가 장착된다. 이 잠금장치는 작동기 내부에 공급되는 유압을 통해 작동기 내부 구성품과 기계적으로 구속됨으로써 작동기 잠금 기능을 수행하게 된다. 착륙장치 접힘/펼침에 따라 잠금장치의 잠김/풀림이 반복되므로, 잠금장치는 항공기 운용 중 반복되는 동일 하중을 받게 되며, 이로 인한 피로 파괴의 가능성이 존재하게 된다. 본 논문에서는 잠금장치에 대한 피로해석 과정 및 결과를 제시하고, 피로시험을 통해 그 결과의 타당성을 검증하였다. The retract actuator makes the landing gear retract or extend during take-off and landing of an aircraft. To prevent folding of landing gear that has remained in the extended state because of an unexpected external disturbance, an internal locking device is applied to the retract actuator. The locking device is restrained with another internal component by oil pressure supplied to the retract actuator, and this restraint makes the locking of the actuator possible. Because locking and unlocking are repeated during retraction and extension of the landing gear, the locking device takes repeated identical loads, and the possibility of fatigue failure exists. In this study, the process and results of fatigue analysis for the locking device are presented, and the appropriateness of the analysis result is verified using a fatigue test.

충남지역 배 과수원 잡초발생 및 분포조사

이정선(Jeong Sun Lee),황기선(Ki Seon Hwang),이인용(In Young Lee),박기웅(Kee Woong Park) 한국잡초학회 2015 한국잡초학회 별책(학술대회 초록집) Vol.35 No.2

미생물처리가 후지/M.9 사과나무 생육에 미치는 영향

이정선(Jeong-Sun Lee),홍재성(Jae Seong Hong),홍기섭(Gi Seup Hong) 한국원예학회 2009 한국원예학회 학술발표요지 Vol.2009 No.10

항공기 착륙장치 성능해석 기법에 대한 연구

이정선(Lee Jeong Sun) 대한기계학회 2014 대한기계학회 춘추학술대회 Vol.2014 No.11

The major role of landing gear is to absorb the impact energy generated by landing of aircraft. The impact energy is absorbed by shock absorber of landing gear and the residual impact energy which is not dissipated by shock absorber cause the ground reaction force. The main purpose of performance analysis of landing gear is to predict the ground reaction forces in landing conditions. In this paper, the equation of motion for 2-DOF oleo-pneumatic shock absorber was established and numerical analysis was done by using MATHCAD. Analysis results were compared with drop test results to verify adequacy of equation.

미생물 처리가 후지 사과 과실품질에 미치는 영향

이정선(Jeong-Sun Lee),홍재성(Jae Seong Hong),진정대(Jung Dae Jin) 한국원예학회 2009 한국원예학회 학술발표요지 Vol.2009 No.10

의료서비스품질이 환자만족도에 미치는 영향에 관한 연구

이정선(Jeong Sun Lee),이민정(Min Jung Lee) 韓國컴퓨터情報學會 2016 韓國컴퓨터情報學會論文誌 Vol.21 No.3

Recently many small and mid-sized hospitals are closing down or experiencing financial difficulties. As a result, in order to provide exceptional service that would increase their competitiveness, they implemented telemedicine service for the prescription of medicine necessary before a colonoscopy. This study is an analysis of how telemedicine service affects patient satisfaction. Through the focus group interview (FGI) of medical service providers, regarding telemedicine service and face-to-face service, it was appraised that telemedicine service was more effective than face-to-face service. Afterward, a second survey aimed at endoscopy patients was conducted in order to find out the value of telemedicine service. First, through the analysis of the three main factors of telemedicine service, conclusions were drawn(safety/reliability, convenience/rapidity, and economics). A follow-up analysis showed that convenience/rapidity had the greatest effect on telemedicine service satisfaction. Next the factors of the quality of medical service were analyzed and 3 main factors were deduced (the superiority of the external and internal environments/appropriateness, superiority of the medical team, telemedicine service). A follow-up analysis found that telemedicine service had the greatest effect on patient satisfaction. This study found that providing exceptional medical service that utilizes telemedicine service would improve patient satisfaction. Therefore, we would be able to form a strategic plan that would strengthen the competitiveness of small and mid-sized hospitals.

소스 커뮤니티 관점에서 본 포스트 뮤지엄의 관람객 참여와 소셜 미디어

이정선(Lee, Jeong Sun),여운승(Yeo, Woon Seung) 한국예술경영학회 2016 예술경영연구 Vol.0 No.40

사람을 중심에 두고 관람객 개인의 목소리와 관점을 수용하여 대중과 적극적으로 소통하고 뮤지엄의 영역을 확장해 나가는 포스트 뮤지엄은 과거 유물을 소유했던 그룹과 오늘날 그들의 후손을 가리키는 ‘소스 커뮤니티’의 개념을 대중으로 확장시켰다. 포스트 뮤지엄은 대중과의 소통을 고민하며 소셜 미디어를 도입하여 다양한 시도를 하였다. 이 시도들은 대중이 언제 어디서나 뮤지엄과 소장품을 접촉지대로 삼아 접근하여 소장품 정보에 그들의 해석과 경험, 인상을 더할 수 있도록 도와주었다. 뮤지엄 운영과 전시 기획에까지 참여하게 된 대중은 뮤지엄과 소장품, 사회를 잇는 ‘매개자’이자 뮤지엄의 콘텐츠로 새로운 작품을 창작하는 ‘프로슈머’로 뮤지엄과 협업하 고 있다. 소스 커뮤니티로서 대중들의 적극적인 참여는 대중과 뮤지엄의 관계를 수평적으로 발전시켰고 대중이 뮤지엄의 중심에 들어올 수 있는 계기가 되었다. 큐레이터도 대중이 뮤지엄의 진정한 파트너와 기여자로 활동할 수 있도록 뮤지엄 경험을 입체적으로 설계하고 그 의미를 공유할 수 있는 기회를 만드는 ‘커뮤니케이터’와 ‘소 셜 엔지니어’로서의 역량을 넓혀가고 있다. 본 논문은 소셜 미디어를 활용하여 대중 의 참여를 유도하는 포스트 뮤지엄의 다양한 사례들을 정리하고, 소셜 미디어가 대중과 뮤지엄, 큐레이터의 역할을 어떻게 변화시키고 관계의 본질에 어떤 영향을 미쳤는지 분석한다. 이를 바탕으로 본 논문에서는 전문가에 의한 데이터와 대중의 지식, 해석과 일상경험이 통합되고 대중이 뮤지엄에서 최적화된 경험을 할 수 있는 소셜 미디어 활용방안을 제안하여 포스트 뮤지엄의 관람객 참여를 독려하고자 한다. 이 참여모델은 이화여자대학교박물관에서 진행될 프로젝트로, 뮤지엄 소장품에 문화적 소유권을 가지고 있는 대중에 의해 유물이 새롭게 창작되고 공유되면서 대중과 ‘함께’ 포스트 뮤지엄의 영역을 확장시켜나갈 수 있기를 기대한다. Post-museum, which communicates with the public actively and accepts their personal voices and perspectives by placing them at the center, has expanded the theoretical concept of “source community” beyond its traditional scope, i.e., groups of the past who owned relics as well as their descendants nowadays. Concerned with communication with the public, post-museum has recently performed a variety of experiments utilizing social media, allowing the public to access the museum and its collections anywhere and anytime as well as to contribute by considering the museum and relics as “contact zone” and adding their own experiences including personal interpretations and feelings. By participating in management and curatorial process, the public as source community collaborates with the museum not only as mediators connecting museums and society but also as prosumers creating new works based on the content of the museum. Such active participations of the public established an equal relationship with museum and provided an opportunity to step into its center. Likewise, curators are enhancing their capabilities as both “communicators” and “social engineers” who design and share multi-faceted museum experiences with the source community as true partner and contributor. This article reviews selected cases of post-museum to induce public participation by utilizing social media, and analyzes how social media changed the roles of museums, curators, and the public as source community and affected the nature of their relationship. Based on this analysis the article proposes exhibition ideas to utilize social media for visitors’ participation, which integrate information organized by experts with the knowledge, interpretation, and everyday experience of the participating crowd to provide optimized museum experience to the public. These participatory models, which will be applied to exhibitions at Ewha Womans University Museum, are expected to expand the domain of post-museum together with the public who possesses cultural ownership of museum collections while creating and sharing new relics.

유산균 발효에 의한 인삼열매 추출물의 유효성분 변화

이정선(Jeong-Sun Lee),최성원(Sung-Won Choi) 한국유산균프로바이오틱스학회 2023 Current Topic in Lactic Acid Bacteria and Probioti Vol.9 No.2

In this study, lactic acid bacteria showing high specific β-glucosidase activity were isolated from kimchi to convert the high molecular weight ginsenosides into low molecular weight ginsenosides in ginseng berry. Among the 120 strains of lactic acid bacteria isolated from kimchi, 42 strains of lactic acid bacteria showing β-glucosidase activity were isolated using the esculin agar method. And as a result of measuring the β-glucosidase activity of the intracellular enzyme fraction, the lactic acid bacterium OG-05 showing high β-glucosidase activity(198.60±20.87 AU/mL) and specific β -glucosidase activity(21.52±2.37 AU/Log CFU) was selected. The selected lactic acid bacterium OG-05 was identified as Lactiplantibacillus plantarum by bacterial identification based on 16S rRNA sequencing analysis and was named Lactiplantibacillus plantarum OG-05. When ginseng berry extract was fermented using Lactiplantibacillus plantarum OG-05, the ginsenosides Re, Rg1 and Rb1 which are abundant in ginseng berry extract were not detected. The contents of Rc, Rf and F1 decreased, while the contents of Rg2 and Rd increased. In addition, F2, Rg3, CK, and Rh2, which did not exist before fermentation, were produced at significant levels. These results indicate that the fermentation of ginseng berry extract using Lactiplantibacillus plantarum OG-05 could influence the ginsenoside composition.

뮤지엄에서의 크라우드 큐레이션 및 알고리즘 기반 전시 큐레이션 모델

이정선(Jeong Sun Lee),여운승(Woon Seung Yeo) 한국콘텐츠학회 2019 한국콘텐츠학회 종합학술대회 논문집 Vol.2019 No.5