한국의료관광의 현황에 대한 Q방법론적 분석

이창미(Lee, Chang-Mi),유형숙(You, Hyung-Sook) 대한관광경영학회 2013 觀光硏究 Vol.28 No.2

본 연구의 목적은 한국 의료관광의 현황에 대한 의료관광 전문가들의 인식유형을 발견하는 것이다. 의료관광 전문가는 의료관광 에이전시, 병원, 관련기관의 종사자를 비롯한 관련 연구자들로 선정하였다. 특히 본 연구는 인식분석에 있어서 개인의 주관적 특성을 규명하는 것으로 알려져 있는 Q방법론을 사용하였다. 분석 결과, 의료관광 전문가의 인식은 다섯 가지 유형으로 구분되었다. 제1유형은 의료관광의 제도적 기반이 미흡하다고 인식하고 있고, 제2유형은 한국의 우수한 의료에 대해 매우 긍정적인 태도를 가지고 있었으며, 제3유형은 의료관광에 있어서의 한방 활용을 강조하였고, 제4유형은 의료관광에 있어서의 의학적 접근 뿐만 아니라 관광학적 접근의 중요성을 피력하였으며, 제5유형은 의료관광의 전문인력 및 서비스 부족을 지적하였다. 이상의 연구결과를 바탕으로 한 의료관광 전문가의 견해는 한국의료관광의 향후 과제를 논의하는 과정에서 발전 방안을 위한 근거 자료로서 활용 가능할 것으로 생각된다. The purpose of this research is to analyze the perceptions of medical tourism professionals towards the current state of medical tourism in Korea using the Q-methology which has been known as a useful method to identify individuals’ subjective characteristics and perceptions. The group of medical tourism professionals who contributed to this study includes members who work for medical tourism agencies, hospitals, administrative organizations, and academic researchers.The results revealed that the perceptions of medical tourism professional can be categorized into five groups : Type 1 recognized the unprepared legal system and the unestablished institutional framework for medical tourism ; Type 2 emphasized the competitiveness of high-level medical technique; Type 3 suggests to promote more of Korean traditional medicine ; Type 4 offers to promote medical tourism from the aspects of both medical approach and tourism approach ; Type 5 finds the need for the improvement of medical environments including hospitality and specialists of medical tourism. The above results of this study provide the basic data for developmental suggestion by understanding the professionals’ subjective attitudes and views on medical tourism.

전기화학적 CO2 환원반응에 의한 CH4 생성 메커니즘 이해: 밀도범함수이론 연구

이창미 ( Chang-mi Lee ),옥서현 ( Seo Hyun Oak ),장하림 ( Ha Rim Jang ),정은지 ( Eun Ji Jeong ),임동희 ( Dong-hee Lim ) 충북대학교 산업과학기술연구소 2016 산업과학기술연구 논문집 Vol.30 No.1

Researches on electrochemical CO2 conversion into useful hydrocarbon fuels have emerged as one of the promising CO2 reduction methods to mitigate green house effects. In the electrochemical CO2 conversion reaction, the selection of catalyst is recommended prior to determine other reaction parameters, because the CO2 conversion efficiency is significantly influenced by the performance of a selected catalyst. To understand CO2 conversion mechanisms on various catalyst such as Cu, Au, and Pt, in this study the reaction limiting step and energy barrier of intermediate products of existing CO2 reduction reactions were calculated using density functional theory (DFT). The DFT calculation revealed that the lowest energy barrier was found in Pt (0.35eV), but the CH4 production was low. Au turned out to be the least efficient catalyst among three metals due to the highest energy barrier (0.63eV) and the high production of intermediate products. Although the energy barrier of Cu (0.50eV) was higher than that of Pt, the surface of Cu was revealed to be most efficient in the generation of CH4. The results of this study would provide useful basic information for the development of a new catalyst in electrochemical CO2 conversion.

CHEST CT검사에서 자동노출조절기능(AEC) 사용시 이물질이 있는 Topogram이 선량에 미치는 영향에 관한 연구

이창미(Chang Mi Lee),김원(Won Kim),이승주(Seung Ju Lee),이태만(Tea Man Lee),조민연(Min Yeon Jo) 대한CT영상기술학회 2013 대한CT영상기술학회지 Vol.15 No.1

목적 환자의 선량을 저감하기 위한 방법의 일환으로 AEC를 이용한 흉부 CT검사에서 이물질이 있는 Topogram이 선량에 미치는 영향에 관해 연구하고자 한다. 대상 및 방법 SIEMENS SOMATOM definition AS+장비를 사용하였고 인체 모의체, 500원 동전 4개, 휴대폰, 벨트를 이용하였다. 이물질을 상의 주머니에 위치시켜 Topogram을 촬영하고, 이물질을 제거한 후 각각 10번씩 Scan하여 Dose Report 상의 CTDIV, DLP를 값으로 선량증가율을 알아보고 인체 모형 모의체에 유리선량계를 배열하여 이물질 부위의 주요장기의 흡수선량을 알아본다. 결과 Topogram에서 이물질의 두께나 밀도, 크기가 클수록 유효선량이 증가하였으며, Scan range 밖에 이물질이 있을 경우에도 없을 때와 비교했을 때 선량이 증가 하였다. 특히 남성의 Chest CT검사 시 Scan range 안에 휴대폰이 있을 경우 10% 정도로 크게 선량이 증가하였다. 이물질이 있는 level의 주요장기의 흡수선량은 크게는 42% 정도 선량이 증가하였다. 결론 AEC를 적용하는 검사에서 이물질이 Topogram상에 나올 경우 진단에 필요한 선량 외에 환자의 불필요한 선량증가를 가져오기 때문에 이물질의 유무를 검사 전 확인하고 Topogram에서 이물질이 있는 경우에는 Topogram을 재촬영 하여 검사할 것을 제안한다. Ⅰ. Purpose Chest CT scan using the AEC, Want to study about the impact on dose for foreign object topogram to methods for reducing patient dose. Ⅱ. Meterial and Methods Human phantom was used on the Siemens SOMATOM definition AS+ equipment, 500-won coin, cellular phone, belt were used. Position taken by topogram a foreign object upper in a pocket remove foreign object, and 10 times each of the scan, dose report on CTDIv, DLP examines the relationship of organ doses and dose growth and foreign object of the major organs in the area through the human body phantom. Ⅲ. Result Of foreign object size, thickness or density, the larger the effective dose is increased. The dose was increased when compared with if there is a foreign object outside of Scan range. Men’s chest CT Scan 10% significantly increased dose for cellular phone inside of Scan range. Level of foreign object in the major organs of the absorbed dose is 42% of the dose was increased. Ⅳ. Conclusions CT scan using AEC, If found to be a foreign object in topogram caused unnecessary dose increase. Therefore suggest that Topogram retake the examination.

건강인식과 의료관광 참여의향 간의 영향관계에 있어서 즐거움 인식의 조절효과

이창미(Lee, Chang-Mi) 한국외식산업학회 2016 한국외식산업학회지 Vol.12 No.3

탄소섬유판으로 보강한 철근콘크리트보의 휨보강 효과

이창미(Lee Chang-Mi),이흥로(Lee Hong-Ro),권우현(Kwon Woo-Hyun),김우석(Kim Woo-Suk),백승민(Baek Seung-Min),곽윤근(Kwak Yoon-Keun) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.4

This paper deals with the flexural strengthening effect of reinforced concrete beams strengthened with CFRP Plate(Carbon Fiber Reinforced Polymer Plate). Ten strengthened RC beams (including control beam) were experimentally evaluated to determine improvements in flexural strength. Test parameters in this experimental study are strengthening types(B, U, E Type), steel ratio(=0.0096, =0.015), preloading, an interval of stirrup (@100, @300) and strengthened length of CFRP Plate (2064㎜, 2580㎜). RC beams strengthened with CFRP Plate were tested under the combined control of load. Considering strengthening types and strengthening methods of CFRP Plate, flexural capacity and failure mode of test specimens were evaluated. The results show that flexural capacity of beams strengthened with CFRP Plate is about 21%~117% in all strengthening parameters higher than that of control beam. Additionally, experimental results are compared with theoretical results available in the literatures and good agreement is observed.

탄소섬유판으로 보강한 철근콘크리트보의 전단보강효과

이홍로(Lee Hong-Ro),이창미(Lee Chang-Mi),권우현(Kwon Woo-Hyun),김우석(Kim Woo-Suk),백승민(Baek Seung-Min),곽윤근(Kwak Yoon-Keun) 대한건축학회 2008 大韓建築學會論文集 : 構造系 Vol.24 No.4

This paper deals with the shear strengthening effect of reinforced concrete beams strengthened with CFRP Plate (Carbon Fiber Reinforced Polymer Plate). Eleven strengthened RC beams (including control beam) were experimentally evaluated to determine improvements in shear strength. Test parameters in this experimental study are strengthening ratios (22%, 33%), strengthening methods of CFRP Plate (I, X type), existence and nonexistence of Preloading, Steel ratios (ρ=0.015, ρ=0.021), and strengthening methods of CFRP sheet (I, U type). RC beams strengthened with CFRP Plate were tested under the combined control of load. Considering strengthening ratios and strengthening methods of CFRP Plate, shear capacity and failure mode of test specimens were evaluated. The results show that shear capacity of beams strengthened with CFRP Plate is about 35.4%~94.6% in all strengthening parameters higher than that of control beam. and we did compare experiment results with used equation.

의류 소재의 지식도에 따른 소재 정보탐색과 소재 기대편익

나영주,신유나,이창미,Na, Young-Joo,Shin, Yoo-Na,Lee, Chang-Mi 한국섬유공학회 2011 한국섬유공학회지 Vol.48 No.4

The purpose of this study was to investigate college student's behavior when searching for textile information or identification. We also looked into their expectations for apparel material according to textile knowledge. 260 questionnaire were collected and analysed using factor analysis, reliability analysis, and a t-Test using SPSS. The questionnaire for search behavior when looking for textile information was divided into 4 sections: subjective, objective, sustaining, and before-purchasing search. 5 Textile expectations were defined as tactile comfort, pilling or wrinkle free, ease of washing or maintenance, and ease of body movement. The results showed college students have relatively high textile knowledge than the awareness of the importance of textiles. They usually use sustaining search for textile identification and have the highest expectations in terms of a fabric pilling or being wrinkle free. The greater their awareness of textile importance they have, the higher the textile knowledge they have. It showed that the search behavior for textile information differed according to material knowledge, and the participants in the high knowledge group used their accumulated subjective and experienced textile information. The student's material expectations are related to their cognition for textile importance rather than their textile knowledge. When looking at search behavior for textile information, textile identification is found to be related their expectations for textile material positively.

연료전지 산소환원반응 향상 위한 백금 촉매의 구조적 특성

강석호(Seok Ho Kang),이창미(Chang Mi Lee),임동희(Dong Hee Lim) 大韓環境工學會 2016 대한환경공학회지 Vol.38 No.5

연료전지에서의 전체 반응 속도는 산화전극에서 일어나는 수소산화반응에 비해 그 반응 속도가 현저히 느린 환원전극에서의 산소환원반응(oxygen reduction reaction, ORR)에 의해 결정된다. ORR 효율성 평가를 용이하게 하는 지표(descriptor)로서 촉매 표면에서의 산소원자 흡착강도를 활용하는데, 산소흡착강도는 촉매 표면의 기하학적 구조 변형에 따른 전자구조를 변형함으로써 조절할 수 있다. 이에 본 연구에서는 백금 표면의 원자모델을 이용하여 표면의 기하학적 구조가 산소흡착 강도에 미치는 영향과 그 원인을 밀도범함수이론(density functional theory, DFT) 계산을 통해 분석하였다. 먼저, 기하학적 구조를 인위적으로 변형시킨 Pt(111) 표면에서의 산소흡착반응을 밀도범함수이론 계산을 이용해 분석함으로써 기하학적 구조 변화가 산소흡착강도에 미치는 영향(strain effect)을 확인하였다. 최적화한 Pt 격자상수(3.977 Å)에 ±1% 간격의 변화율을 적용하고 각 변화율마다의 산소흡착강도를 계산하였는데, Pt-Pt 원자 간 거리가 멀어질수록 산소흡착강도가 강해지는 것을 확인하였다. 이는 원자 간 거리가 증가할수록 d-band center가 페르미 준위(Fermi level)쪽으로 이동하게 되며, 이로써 일부 반결합 오비탈(anti-bonding orbitals)에 전자가 채워지지 않기 때문에 전체적으로 반결합 오비탈이 형성될 가능성이 적어지기 때문이다. 결과적으로, 순수한 백금이 가진 격자상수(3.9771 Å) 보다 약 2~4% 작은 백금 표면 격자크기를 가질 수 있도록 유도할 수 있다면 산소흡착강도가 적절히 약하게 조절될 수 있으며, 이는 순수한 백금보다 더 향상된 ORR 성능을 가진 촉매물질 개발 연구를 위한 기초자료로서 활용할 수 있을 것이다. The overall reaction rate of fuel cell is governed by oxygen reduction reaction (ORR) in the cathode due to its slowest reaction compared to the oxidation of hydrogen in the anode. The ORR efficiency can be readily evaluated by examining the adsorption strength of atomic oxygen on the surface of catalysts (i.e., known as a descriptor) and the adsorption energy can be controlled by transforming the surface geometry of catalysts. In the current study, the effect of the surface geometry of catalysts (i.e., strain effect) on the adsorption strength of atomic oxygen on platinum catalysts was analyzed by using density functional theory (DFT). The optimized lattice constant of Pt (3.977 Å) was increased and decreased by 1% to apply tensile and compressive strain to the Pt surface. Then the oxygen adsorption strengths on the modified Pt surfaces were compared and the electron charge density of the O-adsorbed Pt surfaces was analyzed. As the interatomic distance increased, the oxygen adsorption strength became stronger and the d-band center of the Pt surface atoms was shifted toward the Fermi level, implying that anti-bonding orbitals were shifted to the conduction band from the valence band (i.e., the anti-bonding between O and Pt was less likely formed). Consequently, enhanced ORR efficiency may be expected if the surface Pt-Pt distance can be reduced by approximately 2~4% compared to the pure Pt owing to the moderately controlled oxygen binding strength for improved ORR.

향토음식점의 서비스품질과 만족도 간의 영향관계에 있어서 고유성 인식의 조절효과

오상훈(Oh, Sang-Hoon),이창미(Lee, Chang-Mi),오미자(Oh, Mi-Ja) 한국관광레저학회 2015 관광레저연구 Vol.27 No.12

토양지하수 내의 비소거동 특성을 이해하기 위한 XAS 실험 및 DFT 계산과학 해석 연구

임동희(Dong-Hee Lim),한영수(Young-soo Han),박지현(Ji-Hyun Park),이창미(Chang-Mi Lee) 대한환경공학회 2022 대한환경공학회 학술발표논문집 Vol.2022 No.11