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HID LAMP 驅動을 위한 類似共振形 INVERTER에 관한 硏究
金光一,裵相俊 慶一大學校 1992 論文集 Vol.8 No.1
The cricuit of QRI(Quasi-Resonant Inverter) which is able to regulate frequency in the output voltage by the ZVS(Zero Volt Switching) was investigated. We found parameters in the circuit of QRI so that they have application to the HID(High Intensity Discharge) Lamp drive. Then we simulated that by personal computer and summarized the result of simulation.
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Corynebacterium hofmannii에 依한 전신감염 1예
문대혁,최강원,박석건,이광호 대한감염학회 1984 감염 Vol.16 No.1
Corynebacterium of hoffmannii is a part of normal pharyngeal flora. Human infection caused by C. hofmannii is very rare. All reported cases involve prosthetic or native cardiac valve. This patient sufered from chronic alcohlism, diabetes mellitus, and acute suppurative inflammation of brain, meninges and soft tissue. And he failed to show any clinical response to various antimicrobial therapy and died after discharge.
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초등교원양성대학의 교육서비스품질과 학생만족도 및 충성도의 구조적 관계
곽민석(Kwag Min Seok),곽현규(Kwag Hyun Gyu) 학습자중심교과교육학회 2017 학습자중심교과교육연구 Vol.17 No.18
본 연구는 초등교원양성대학의 교육서비스품질과 학생만족도 및 충성도의 구조적관계를 분석하는데 그 목적이 있다. 모집단으로는 현재 전국교육대학교에 재학 중인 학생들을 선정하였고, 이 중 서울과 강원도, 충청도에 소재한 A대학교, B대학교, C 대학교 학생들을 2017년 6월 5일부터 23일까지 약 3주간 표본 집단으로 설정하여 연구를 진행하였다. 연구의 수행을 위해 설문지를 측정도구로써 사용하였으며, 총 234명의 자료를 분석하여 가설을 검증하였다. 자료 처리에는 Windows용 PASW 18.0과 AMOS 20.0 프로그램을 이용하였으며, 빈도분석, 신뢰도 분석, 확인적 요인분석, 상관관계분석, 구조방정식 모형분석을 통해 자료를 분석하였다. 본 연구의 결과는 다음과 같다. 첫째, 교육서비스품질은 학생만족도에 긍정적인 영향을 미치는 것으로 나타났다. 둘째, 교육서비스품질은 학생충성도에 영향을 미치지 않는 것으로 나타났다. 셋째, 학생만족도는 학생충성도에 긍정적인 영향을 미치는 것으로 나타났다. 마지막으로 교육서비스품질과 학생충성도 사이에서 학생만족도는 매개하는 것으로 나타났다. The current study was aimed to investigate the structural relationships among educational service quality, satisfaction, and loyalty. Data were drawn from 234 students in three different universities. PASW 18.0 for windows and AMOS 20.0 program were used for data processing. Data were analyzed using frequency analysis, reliability analysis, confirmatory factor analysis, correlation analysis, and structural equation modeling techniques. The results were as follows. First, educational service quality had a positive effect on satisfaction. Second, educational service quality did not affect loyalty. Third, satisfaction had a positive effect on loyalty. Lastly, satisfaction fully mediated the relationship between educational service quality and loyalty.
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Bow Wave Breaking and Viscous Interaction of Stern Wave
Kwag, Seung-Hyun The Korean Society of Mechanical Engineers 2000 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.14 No.4
The bow wave breaking and the viscous interaction of stern wave are studied by simulating the free-surface flows. The Navier-Stokes equation is solved by a finite difference method in which the body-fitted coordinate system, the wall function and the triple-grid system are invoked. After validation, the calculations are extended to turbulent flows. The wave elevation at the Reynolds number of $10^4$ is much less than that at $10^6$ although the Froude number is the same. The numerical appearance of the sub-breaking waves is qualitatively supported by experimental observation. They are also applied to study the stern flow of S-103 for which extensive experimental data are available. Although the interaction between separation and the stern wave generation are not yet clear, the effects of the bow wave on the development of the boundary layer flows are concluded to be significant.
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Incorporation and Production of Glucose in Lake Soyang
Kwag, No-Tae,Choi, Seung-lk,Ahnl, Te-Young,Ahn, Tae-Seok 江原大學校 附設 環境硏究所 1996 環境硏究 Vol.13 No.-
Kinetics of heterotrophic activity (glucose uptake) and extracellular enzyme activity (f-glucosidase,cellobiohydrolase) and cell numbers were measured in Lake Soyang during phytoplankton bloomdevelopment and after its breakdown Vmax for glucose was lower during Diatom bloom and that was higher after its breakdown. But the increase in f-glucosidase activity was detected in late of Diatom bloom, Glucose uptake did not associated with fglucosidase activity. The tight relation-ship between f-glucosidase and the incorporation of glucose by bacteria was not shown and significance of depolyrmerization on the incorporation of glucose in lake water are discussed.
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Processing and Properties of Lithium Niobate(LiNbO_3) Thin Films
Kwag, Young Jik 수원대학교 기초과학연구소 1992 基礎科學論文集 Vol.1 No.-
강유전체 물질 중에서 전기적 광학적 특성이 우수해 앞으로 여러가지로 응용될 것으로 생각되어지는 LiNbO_3 박말을 sol-gel 방법을 이용하여 실리콘 결정위에 생장 시켜서 이 박막의 전기적 광학적 특성을 조사하였다. Sol-gel 방법은 이미 세라믹 박막의 제작, 화이버의 제조 등 많은 분야에서 활용되고 있으며 최근에 와서 강유전체의 박막을 만드는데도 이 방법이 시도되고 있다. Sol-gel방법으로 균질의 박막을 성장 시키기 위해서는 sol용액의 점도, 온도 등 여러가지 요소를 정확하게 조정하여야 하는데 실험을 통해 이런 요소들이 파악되었다. 성장시킨 LiNbO_3 박막의 투과성, 굴절율, ferroelectric hysterisis loop, I-V characteristic curve 등의 성질이 조사 되었다.
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Kwag, Young Jik,Kim, Keun Mook 수원대학교 산업기술연구소 1987 산업기술연구소논문집 Vol.2 No.-
알루미늄 합금의 2 차상 석출과 냉간 압연시 형성된 금속 결정의 선결함 조직과의 상호 관계에 대해 연구했다. 금속의 과포화 정도와 선결함의 정도 및 선결함의 분포가 2 차상의 모양과 크기 및 분포를 결정하는데 가장 중요한 요소이다. 높은 과포화 상태의 합금은 무질서한 2차상의 분포를 보였고 낮은 과포화율을 보인 경우에는 선결함조직을 따라 일렬로 배열된 아주 미세한 2 차상을 석출시켰다. 이러한 경향은 과포화율이 낮을수록 그리고 열처리 온도가 낮을수록 현저하게 나타났다.
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Kwag, Myung Sug,Kim, Jin Soo Kyung Hee University Management Research Institute 2020 Asia pacific journal of business review Vol.5 No.1
This paper examines the effect of the choice properties of food carving decoration lectures on the recommendation and revisiting intention. As the culinary industry grows, consumers seek not only the value of satiety through food but also the value of aesthetics. They perceived satisfaction from the taste and appearance of the food as well as the interior of the restaurant and the service. Food carving is an important means of fulfilling consumer satisfaction value which is ever-changing. This study attempts to analyze the relationship between the choice properties of food carving lectures and the course recommendation and revisiting intention. This study hypothesis was formulated and the survey was conducted on 125 respondents who had experienced food carving lectures. The reliability and validity of measurement items were verified through Cronbach's Alpha and factor analysis. As a result, all measurement items showed no abnormality. The results of the analyses are as follows. The education satisfaction, education commitment, and brand image, the choice properties of food carving decoration lecture, were found to have a positive effect on the recommendation intention. The results also showed that the education commitment and brand image of food carving decoration lectures were positively associated with revisiting intention. Lastly, the implications of these findings were suggested and for future research were discussed.
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