고온 원자로용 Mod. 9Cr-1Mo강 후판재의 깊이에 따른 미세조직 및 기계적 특성 변화

이선희,박상규,김민철,이봉상,김선진,Lee, Sun-Hee,Park, Sang-Gyu,Kim, Min-Chul,Lee, Bong-Sang,Kim, Sun-Jin 한국압력기기공학회 2011 한국압력기기공학회 논문집 Vol.7 No.2

The purpose of this study is to investigate the effects of through thickness on the mechanical properties and microstructural features in Mod. 9Cr-1Mo steels for RPVs. The microstructures at all locations were typically tempered martensite, but small amount of delta ferrite was observed at the center region. The prior austenite grain size increased with the depth from the surface. The yield strengths of center and 1/4T location were higher than that of surface by 30MPa. The impact toughness of center was low compared to those of other specimens. Also, upper shelf energy was low at the center. The toughness deterioration in center might be caused by larger size of the prior austenite grains and existence of the delta ferrite.

나일론 4 공중합물 소재의 구조와 물성 (1)-연신 속도에 따른 영향-

이선희,조현혹,Lee, Sun-Hee,Cho, Hyun-Hok 한국섬유공학회 2011 한국섬유공학회지 Vol.48 No.2

Nylon 6(N6) and nylon 6(80)-ran-nylon 4(20) (N6-ran-N4) films were prepared using melt pressing methods. The N6-ran-N4 films were drawn uniaxially at various drawing speeds at $125^{\circ}C$, and the film properties were examined by WAXD, DSC, and DMTA. The crystal structure in the N6-ran-N4 films as the drawing speed increased became very similar to the alpha phase of N6. The thermal property of the N6-ran-N4 films prepared with increasing drawing speeds indicated an increasing melting temperature and enthalpy.

고속 방사된 폴리부틸렌 테레프탈레이트 섬유의 미세구조 형성과 물성

이선희,조현혹,Lee Sun Hee,Cho Hyun Hok 한국섬유공학회 2004 한국섬유공학회지 Vol.41 No.6

The effect of take-up velocity on the fine structure and properties of PBT fibers are investigated using WAXD, density, birefringence, DSC, dynamic viscoelasticity, TMA, tensile test, etc. An increase in take-up velocity caused an increase in both the density and the birefringence. In the results of WAXD equatorial profiles, the increase in the take-up velocities resulted in the formation of (010) and (100) reflections of $\beta-crystal$ and the reflection peak became sharper at the take-up velocity of 6 km/min. The initial modulus of the fiber increased when the g' fraction increased, the tenacity depended more on fractions of $\alpha-crystal$, i.e. the total crystallinity. The thermal properties of high speed spun PBT fibers were measured with DSC, dynamic viscoelasticity, TMA, etc. Endothermic curves became sharper with increasing take-up velocities, and endothermic melting peaks are shifted to high temperatures. Therefore, crystal structure was well developed in the fiber obtained at high take-up velocities. The $tan\delta$ peak is shifted and the intensity is decreased with temperature. That is, the packing density of the PBT fiber is high when the take-up velocity and orientation of amorphous region is increased. The shrinkage has a tendency to decrease with increasing take-up velocity.

한국의사의 정부신뢰 관련 요인 분석: 의사단체들의 일부 임원의사들을 중심으로

이선희,양건모,서주현,김주혜,Lee, Sun-Hee,Yang, Gun-Mo,Seo, Ju-Hyun,Kim, Ju-Hye 대한예방의학회 2010 Journal of Preventive Medicine and Public Health Vol.43 No.5

Objectives: This study aims to investigate the factors related to Korean physicians' trust in the government. Methods: We used structured questionnaires that were composed of multidimensional scales for each of the various categories. Results: The recognition levels of trust of the government by Korean physicians were not high, and they ranged from 3.6 to 4.8 for ten scales. The factors related to trust in the government were categorized into seven factors on the basis of a factor analysis. On the regression analysis, a positive relationship was found between "the individual propensity to trust" and trust in the government, while a negative relationship was found between "the recognition level regarding the government as an authoritarian power" and trust in the government. "Confidence about participation in the policy process" as internal efficacy and "belief in governmental ability and motivation toward public demand" as external efficacy also showed a strong positive relationship with trust in the government. Conclusions: From these results, we can draw the conclusion that making efforts to improve the recognition level of trust in the government among physicians is an important policy task. To increase the trust level, participation of physicians in the policy process in various ways and open communication between the physicians' associations and the government should be facilitated.

연구발표논문초록 : 흡착 ( Ⅰ ) ; CO2 분위기에서 호도각 char 의 부활특성에 관한 연구

이선희,장윤호,조병린 ( Sun Hee Lee,Yoon Ho Chang,Byung Rin Cho ) 한국화학공학회 1985 추계총회초록집 Vol.- No.-

팀기반 학습을 적용한 분만간호 시뮬레이션 실습교육이 간호대학생의 간호지식, 자기효능감과 임상수행능력에 미치는 효과

이선희,Lee, Sun Hee 한국여성건강간호학회 2018 여성건강간호학회지 Vol.24 No.2

Purpose: To identify the effects of delivery-nursing simulation education using team-based learning on the delivery nursing knowledge, self-efficacy, and clinical competence of nursing students. Methods: The study used a nonequivalent, control group, quasi-experimental design. The team-based learning was applied to the experimental group, while the individual learning was applied to the control group. Data were collected from October 12 to December 7, 2016, and analyzed using the SPSS/WIN 22.0 program. Results: Comparison between the experimental and control group showed no significant difference in delivery-nursing knowledge (t=-0.33, p=.741) or self-efficacy (t=-0.65, p=.515). However, a significant difference (t=-2.09, p=.048) in the nursing-skills aspect of clinical competence was found between the experimental and control groups after the practical simulation education. Conclusion: Delivery-nursing simulation education using team-based learning was more effective in improving the nursing-skills aspect of nursing competence than was delivery-nursing simulation education based on individual learning.

새정부 보건의료정책 개선을 기대한다

이선희,Lee, Sun-Hee 한국보건행정학회 2022 보건행정학회지 Vol.32 No.2

With the inauguration of a new government, expectations for policy changes are also rising. In the hope that this will serve as an opportunity to improve health care policy, I would like to outline the principles strategies. First, considering the growing socioeconomic impact of the health care sector, the government's policy priorities should be notably increased compared to the past. Second, policy improvement measures based on evidence should be sought instead of dwelling on presidential pledges. While easing regulations, we should improve the quality of regulatory approaches. Therefore, it is a time when efforts are needed to strengthen the stability of policies in response to economic crises.

용융 수지 압출 조형방식 3D 프린팅으로 제조된 텍스타일의 형태 및 물성

이선희,Lee, Sun Hee 한국섬유공학회 2015 한국섬유공학회지 Vol.52 No.4

In this study, the possibility of textile manufacture by 3D printing based on fused deposition modeling (FDM) was investigated. Among the various filaments that can be used for 3D printing, three polylactic acid (PLA) filaments and one thermoplastic polyurethane (TPU) filament was collected and then examined by dynamic mechanical thermal analysis (DMTA), differential scanning calorimetry (DSC), and a tensile test. An Stereolithograpy (STL) file with a 3D textile model was prepared and transformed into a G-code file using a G-code generator. The extrusion conditions for 3D printing were controlled by nozzle speed, nozzle temperature, thickness of the outer layer, height of the layer, and extrusion speed. Textiles manufactured by 3D printing based on FDM using PLA and TPU filaments were obtained. A 3D textile sample prepared using TPU filament was analyzed for morphology, and thermal and tensile properties, and the following results were obtained: melt temperature of approximately $204^{\circ}C$, breaking load of 14 N, and elongation of 36%. Consequently, the applicability of 3D printing based on FDM for manufacturing textiles using TPU filament was confirmed.

Na₂Se₂을 이용한 대칭적인 다이아릴 다이셀레늄 화합물의 One-Pot 합성방법

이선희,김샛별,박명숙,Lee, Sun-Hee,Kim, Saet-Byeul,Park, Myung-Sook 대한화학회 2011 대한화학회지 Vol.55 No.3

커피전문점의 시각이미지요소가 소비자 선호도에 미치는 영향

이선희,우나리야,Lee, Sun Hee,Woo, Nariyah 한국벤처창업학회 2015 벤처창업연구 Vol.10 No.3

소비자들이 커피전문점을 선택 방문 하는 가장 중요한 요인 중 하나는 시각적 요인이다. 커피전문점 선호도에 대한 분석 결과, 직업, 거주지, 결혼여부와 같은 응답자의 일반적 특성에 따라서 유의적인 차이가 나타났으며, 모든 일반적 특성 범주에서 스타벅스의 선호도가 가장 높은 것으로 나타났다. 커피전문점 매장 내 색체의 영향에 대한 분석 결과에서는 모든 일반적 특성 변수에서 통계적으로 유의한 차이가 나타나지 않았다. 또한 시각적인 상징컬러가 가장 영향을 주는 아이템은, 제공용품과 실내 인테리어가 중요한 아이템으로 조사되었다. 시각적인 상징컬러만으로 커피전문점을 선택 한다면 가장 기억에 남거나 방문하고 싶은 곳은 스타벅스였으며, 응답자의 일반적 특성에 따라서 차이가 나타난 변수는 평균용돈이었다. 시각적 상징컬러가 강하여, 선택된 커피전문점으로써 가장 기억에 남거나 방문하고 싶은 곳으로서 스타벅스, 엔젤리너스, 카페베네이었으며, 이디야가 색상이 그 커피전문점의 특성을 잘 나타내고 있어서'이었고, 할리스는 다른 곳과 비교해서 색상이 개성이 있어서로 조사되었다. 즉 본 연구에서는 커피전문점마다 커피 맛은 다르지만, 소비자들이 커피전문점을 방문할 때 시각적 요소의 중요도와 상징컬러의 선호도가 커피전문점의 선택에 중요한 영향을 미치는 것으로 분석되었다. 일반 소비자를 대상으로 조사하여 시각적 요소들이 어떠한 영향을 미치는지 알아보는 연구를 진행하였으며, 시각적 요소와 컬러마케팅이 중요한 요소임을 인식하여 발전시킬 필요가 있는 것으로 파악되었다. One of the most important factors for the consumers to select a coffee shop is a visual factor. The analysis results of interior pale face image of the coffee house doesn't show significant differences on all the categories. It is recognized that the items affected by symbolized color are supplies and interior design. If a respondent choose a coffee house by the symbolized color, 'Starbucks' is the most memorable or want to visit place, and only one category, pocket money shows significant difference in choosing coffee houses. The investigation results say that the most memorable or want to visit coffee house by the visual icon color are 'Starbucks', 'Angelinus' and 'Caffebene', and that 'Ediya's icon color marks the characteristics of the shop very well, and 'Hollys' has the most characterful color. Resultingly, visual elements and icon colors of the shop seriously affect consumer's choice in visiting a coffee house. This study is to understand the influence of visual elements in choosing a coffee house for general customers, and it is considered that the importance of visual elements and color marketing must be recognized and developed.