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마이크로파 여기 플라즈마광 생성을 위한 도파관 시스템 설계에 관한 연구
전상재,전후동,송창현,하석영,이승혁,이태호,박의준 금오공과대학교 2005 論文集 Vol.26 No.-
In this paper, the plasma lighting system(PLS) excited by the commercial high power magnetron is developed. The design concepts are based on maximizing the huninous efficacy in conjunction with the miniaturization of waveguide system Furthermore the fine tuning is simplified by using only one stub, and the impedance matching is maximized by introducing the tapering technique. The experimental results show that the luminous efficacy can be dramatically improved by the proposed design method.
n-CdS_(0.46)Se_(0.54)/p-Cu_92-x)S_(0.46)Se_(0.54) 이종접합 태양전지의 제작과 그 특성에 관한 연구
유상하,최승평,이상열,홍광준,서상석,김혜숙,전승룡,윤은희,문종대,신영진,정태수,신현길,김택성,유기수 全北大學校 基礎科學硏究所 1994 基礎科學 Vol.16 No.-
승화방법에 의해 CdS_0.46Se_0.54 단결정을 성장하여 결정구조를 조사하고, Van der Pauw 방법으로 Hall effect를 측정하여 carrier density의 온도 의존성과 mobility의 온도 의존성을 조사하였다. 성장된 CdS_0.46Se_0.54 단결정을 치환반응하여 n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 이종접합 태양전지를 제작하였다. Spectral response, 전류-전압특성 및 전력변환 효율을 조사하여 그 결과로부터 개방전압은 0.48V, 단락 전류 밀도는 21mA/㎠, fill factor와 전력변환효율은 각각 0.75와 9.5%를 얻었다. CdS_0.46Se_0.54 single crystal was grown by a sublimation method. The crystal structure and the temperature dependence of carrier density and mobility of CdS_0.46Se_0.54 single crystal were studied. Heterojunction solar cells on n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 were fabricated by the substitution reaction. The spectral response, the J-U characteristics and the conversion efficiency of the n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 heterojunction solar cells were studied. The open-cricuit voltage, short-circuit density, fill factor and conversion efficiency of n-CdS_0.46Se_0.54/p-Cu_2-xS_0.46Se_0.54 heterojunction solar cells under 80mW/㎠ illumination were found to be 0.48V, 21mA/㎠, 0.75 and 9.5%, respectively.
한국 주요정신장애의 유병률 및 관련요인 : 2006 전국정신질환역학조사
조맹제,장성만,함봉진,정인원,배안,이영문,안준호,원승희,손정우,홍진표,배재남,이동우,조성진,박종익,이준영,김진영,전홍진,이해우 大韓神經精神醫學會 2009 신경정신의학 Vol.48 No.3
Objectives The aims of this study are to estimate the prevalence of the DSM-IV psychiatric disorders in the Korean population using the Korean version of Composite International Diagnostic Interview (K-CIDI), and to compare those with previous studies. Methods The Korean Epidemiologic Catchment Area study Replication (KECA-R) was Conducted between August 2006 and April 2007. The sampling of the subjects was carried out across 12 catchment areas. A multistage, cluster sampling design was adopted. The target Population included all eligible residents aged 181o 64 years. Face-to-face interviews were conducted with the Korean version of Composite International Diagnostic Interview (K-CIDI) based on the DSM-IV (N=6,510, response rate=81.7%). Results A total of 6,510 participants completed the interview. The lifetime and 12-month prevalence rates for all types of DSM-IV disorders were 30.0% and 17.3%, respectively. Those of Specific disorders were as follows : 1) alcohol use disorder, 16.2% and 5.6% ; 2) nicotine use disorder, 9.0% and 6.0% ; 3) specific phobia, 3.8% and 3.4% ; 4) major depressive disorder, 5.6% and 2.5% ; and 5) generalized anxiety disorder, 1.6% and 0.8%. Data relating to nicotine and alcohol use disorder revealed a very high male/female ratio. Mood disorder and anxiety disorder were more prevalent among females than males. Conclusion The prevalence of psychiatric disorders was high. In comparison with other studies, remarkable differences in the distribution of psychiatric disorders across the country and times were observed.
항공학과 학생들의 MBTI 성격 유형별 조직몰입 및 팀워크 역량 차이분석
Seung Joon Jeon,Yun Sick Jung,Ri Hyun Shin 한국항공우주의학협회 2023 항공우주의학회지 Vol.33 No.1
Purpose: For students who have already decided on their career path by entering the aviation departments, this study aims to analyze organizational commitment and teamwork relationships using the Myers-Briggs Type Indicator (MBTI) personality type as a tool. Methods: In order to investigate the career choices of aviation workers according to MBTI personality types, a survey was conducted targeting enrolled in and graduating from the aviation departments, and organizational commitment and teawork were analyzed using SPSS WIN 21.0. Results: Sening, Feeling, and Perceiving were mainly found in students who chose cabin crew as their career, whereas students in department of flight crew and aviation maintenance showed high level in Instuition, Thinkg, and Juding. As a result of the analysis, the MBTI type for each career path of aviation students was mainly ENTP for flight crew students, ESFP for cabin crew students, and INTP for aviation maintenance students. Conclusion: Even if students make their choice based on advice, subjective and objective judgments in choosing a career path, there are cases in which the chosen job does not suit them. Therefore, it is hoped that various indicators such as the MBTI will be used to help studnes choose their career path.
전승준 ( Seung-joon Jeon ),곽영순 ( Youngsun Kwak ),고훈영 ( Hun Yeong Koh ),이영식 ( Young Sik Lee ),최성연 ( Sung-youn Choi ) 한국과학교육학회 2017 한국과학교육학회지 Vol.37 No.3
본 연구의 목적은 2050년 미래사회를 살아갈 한국인을 위한 과학소양 범주 및 구성요소 도출에 앞서서, 설문조사를 통해 2050년 미래사회 변화 전망에 따라 요청되는 과학소양의 구성요소를 탐색하고, 2050년 미래학교 과학교육을 통해 다루어야 할 과학소양 주제와 과학소양 구성범주별 중요도 변화 등을 전망하려는 것이다. 본 연구는 보다 큰 프로젝트인 `모든 한국인을 위한 과학(Science for All Koreans) 개발`이라는 연구의 일환으로 수행된 것으로 미래 한국인을 위한 과학소양을 규명하기 위한 기초연구에 해당한다. 연구결과에 따르면 과학소양의 정의에는 기존 과학지식 이외에 과학적 사고방식과 작업 방식 그리고 과학의 응용 등을 포함해야 한다고 응답자들은 강조하였다. 2050년 미래사회 변화 전망에 따라 요청되는 과학소양을 지식과 핵심역량으로 구분하여 제안하고, 2050년 미래 학교 과학소양교육을 위한 교과목 편성, 과학소양 구성범주별로 중요도 추이변화 등을 분석하였다. 연구결과를 토대로 미래 한국인을 위한 과학소양의 범주로 과학의 방법, 과학지식, 과학의 응용 등을 제안하였다. 또한 2050년 미래사회를 살아갈 한국인을 위한 과학소양 범주 및 구성요소도출에 주는 시사점과 한국인을 위한 과학소양 개발의 방향을 제안하였다. The goal of this study is to explore categories and components of science literacy and investigate the trend in the importance of each category of science literacy required for Koreans living in a future society in 2050 through survey analyses with the public. This study, as a preliminarily research, is a part of a larger project called `developing science for all Koreans,` which investigates science literacy for all Koreans. According the survey result, the definition of science literacy should include scientific thinking and working methods, application of science, etc. in addition to existing science knowledge. We also suggested science literacy including knowledge and competencies, as well as organization of science subjects in 2050 future school education, and analyzed trends in the importance of science literacy domains. Based on the results, we suggested the scientific method, science knowledge, and science application as domains of science literacy. Discussed in the conclusion are implications and directions for developing `science for all Koreans` living in a future society in 2050.