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조용규,정규철,박종덕 중앙대학교 의과대학 의과학연구소 1984 中央醫大誌 Vol.9 No.3
In order to investigate the changes in oxygen uptake during treadmill walking according to speed and grade of inclination, 74male and 33 female college students who volunteered were subjected to this study. Speed of treadmill was set to 2,4,6 and 8㎞/hr, and grade of inclination ranged from 0(level) to 25% for the male and from 0 to 12.5% for the female subjects. Oxygen uptake during treadmill walking was measured by Douglas bag method using Orzat gas analyzer. Oxygen uptake during treadmill walking increased rectilinearly with increment of speed or grade of inclination, and could be expressed as simple linear regressions of VO_2 on speed for each grade, or on grade for each speed. Average VO_2 predicted by these regression equations was proved to be valid showing the regression of the predicted on the actual value was VO_2 pred.=1.00VO_2actual-0.31(r=1.0000, S.E.E.=0.51) for the male, and VO_2pred.=1.00 VO_2actual+0.15(r=1,0000, S.E.E.=5.0) for the female. Meanwhile, although VO_2 predicted by multiple linear regression on both speed and grade of inclination(table 4) was also well correlated with the actual values VO_2pred.=0.43 VO_2actual+704.4(r=0.9860, S.E.E.=4.0) for males; VO_2pred.= 0.98 VO_2actual+32.1 (r=0.9879, S,E,E,=82.3) for females, the predicted VO_2 would be underestimated than the actual values in male subjects. Standard error of the estimate by simple linear regression was larger as the load of exercise became heavier ranging from 260 to 400ml/min for males from 80 to 190ml/min for females.
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산업공학 전공 교과목 강의를 위한 파이썬 프로그래밍 활용: 경제성공학 교육 사례 연구
조용규 한국실천공학교육학회 2022 실천공학교육논문지 Vol.14 No.2
Computational thinking with programming skills has been widely emphasized for future industrial engineering researchers andpractitioners in Industry 4.0. However, industrial engineering students still have limited opportunities to improve their computationalthinking abilities during university coursework. In this regard, this research study proposes to use Python programming languagefor teaching classical Industrial Engineering subjects. For a specific case study, we designed and instructed an Engineering Economylecture which cultivates the concept and techniques of economic analysis for engineering students. During the class, we introducedthe usage of several Python libraries that include numpy-financial for basic financial functions, numpy and scipy for simple numericalcomputation and analysis, and matplotlib for data visualization. Anonymous class evaluation survey showed the effectiveness ofthe proposed teaching method in terms of both educational satisfaction and contents delivery. Finally, we found additional needs forproviding lectures that adopt the similar teaching style to the proposed method. 본 논문에서는 산업공학의 전통적인 전공 교과목을 강의할 때 현 시점 산업계 및 학계에서 가장 활용도가 높은 프로그래밍언어인 파이썬 언어를 분석 도구로 활용하는 것을 제안한다. 사례 연구로서 공학 프로젝트의 경제성을 분석할 수 있는 역량을길러주는 전공 교과목인 경제성공학을 채택하였으며, 파이썬에서 다양한 재무함수를 구현한 라이브러리인 numpy-financial를포함하여 간단한 연산 및 수치 해석을 위한 numpy와 scipy, 시각화를 위한 matplotlib 라이브러리를 주로 활용하였다. 익명의 수강생들을 대상으로 강의의 만족도를 조사한 결과 본 논문에서 제안하는 교육 방식이 교육 만족도와 강의 전달력 측면에서 우수한 성과를 보였고, 경제성공학 뿐 아니라 다른 전통적인 산업공학 과목에 대해서도 전공 학생들의 추가적인 수요가 있음을 확인할 수 있었다.
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The Sterol Components of Undaria Pinnatifida and the Incorporation of $^14C-1-acetate$ into Them
조용규,진만부,JOH Yong-Goe,HATA Mitsuo The Korean Society of Fisheries and Aquatic Scienc 1977 한국수산과학회지 Vol.10 No.3
The present study was carried out to knew the sterol components of U. pinnatifida and their incorporation abilities of $^14C-1-acetate$ injected into it. The results obtained are as follows: 1. The total lipids are classified as hydrocarbon $1.6\%$, pigment and sterol ester $2.5\%$, triglyceri do $3.3\%$, free fatty acid $2.2\%$, free sterol $3.8\%$, chlorophyll $18.8\%$, and polar lipids $ 67.3\%$ 2. The sterol mixture from U. pinnatifida are omposed of cholesterol $3.5\%$, 24-methylene-cholesterol $11.2\%$, fucosterol $85.3\%$. 3. The radioactivities of the lipids classes from U. pinnatifida injected with $^14C-1-acetate$ are distributed 4,648 dpm/ug in total lipid, 2,754 dpm/mg in polar lipids, 373 dpm/mg in chlorophyll, 22,481 dpm/mg in free sterol, 6,520 dpm/mg in free fatty acid, 789 dpm/mg in sterol ester and 358 dpm/mg in hydrocarbon respectively. 4. The specific radioactivities of the sterols are 115 dpm/mg in cholesterol, 147,821 dpm/mg in 24-methylenecholesterol, 20, 887 dpm/mg in fucosterol. 미역의 스테롤 조성을 가스크로마토그라피로 조사하였고, 또한 미역줄기에 $^14C-1-acetate$를 주사하여, 120시간후 각지질구분 및 스테롤의 비방사능을 조사하여 $^14C-1-acetate$의 스테롤에로의 전환에 대하여 고찰하였다. 실험에 사용한 미역성분조성은 탄화수조 $1.6\%$, 색소 및 스테롤에스텔 $2.5\%$, 글리세리드 $3.3\%$, 유리지방산 $2.2\%$, 스테롤 $3.8\%$, 클로로필계색소 $18.8\%$ 및 극성지질이 $67.3\%$였다. 미역의 스텔롤조성을 보면 콜레스테롤 $3.5\%$, 24-메칠렌콜레스테롤 $11.2\%$ 및 프코스테롤이 $85.3\%$였다. 미역줄기에 $^14C-1$-아세트산염을 주사한 후, 120시간 경과한 각지질 구분의 비방사능을 보면, 총지질에 4, 648 dpm,/mg, 극성지질에 2,754 dpm/mg, 클로로필 계색소에 373 dpm/mg, 유리 지방산에 6,520 dpm/mg, 스테롤에스텔에 786 dpm/mg, 탄화수소에 358 dpm/mg로서 스테롤 구분에 가장 높았고, 각 스테롤의 비교사능을 보면, 콜레스테롤에 115 dpm/mg, 24-메틸렌 콜레스테롤에 147,821 dpm/mg, 프코스테롤에 20,887 dpm/mg 였다.
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LED Encapsulation을 위한 스태틱 믹서의 전산 설계 및 유동해석을 이용한 액상 실리콘의 혼합 특성에 대한 연구
조용규,하석재,호소,조명우,최종명,홍승민,Cho, Yong-Kyu,Ha, Seok-Jae,Huxiao, Huxiao,Cho, Myeong-Woo,Choi, Jong Myeong,Hong, Seung-Min 한국금형공학회 2013 한국금형공학회지 Vol.7 No.1
A Light Emitting Diode(LED) is a semiconductor device which converts electricity into light. LEDs are widely used in a field of illumination, LCD(Liquid Crystal Display) backlight, mobile signals because they have several merits, such as low power consumption, long lifetime, high brightness, fast response, environment friendly. In general, LEDs production does die bonding and wire bonding on board, and do silicon and phosphor dispensing to protect LED chip and improve brightness. Then lens molding process is performed using mixed liquid silicon rubber(LSR) by resin and hardener. A mixture of resin and hardener affect the optical characteristics of the LED lens. In this paper, computational design of static mixer was performed for mixing of liquid silicon. To evaluate characteristic of mixing efficiency, finite element model of static mixer was generated, and fluidic analysis was performed according to length of mixing element. Finally, optimal condition of length of mixing element was applied to static mixer from result of fluidic analysis.
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조용규(Cho, Yong-kyu),이명순(Lee, Myung-soon) 한국조형디자인학회 2017 조형디자인연구 Vol.20 No.4
In the contemporary ceramics, the era of variety that began to emerge from the 1990s introduced a deconstruction or recomposition of genre and boundary, which was a phenomenon different from those of the past in the usage of medium and material. It was finally appeared as a kind of hybridization to make a new type by combining with different function or element, one of which is moving objet. Thus, in this study, I studied the concept and characteristic of moving objet according to the theories by Frank Popper and George Rickie. And furthermore, I divided and analyzed the phenomenon of the contemporary ceramics into three types, namely, Visual Moving Objet,Medium-combining Moving Objet, Participatory Moving Objet. Types of moving objet likewise in the contemporary ceramics is recognized to be settled down or developed into a new trend or genre as the degree of modern people’s preference increases, for which I anticipate more study in the future. 현대도예에서 1990년대부터 출현했던 다양화 시대는 매체와 재료의 사용에서 종전과는 달리 장르와 경계의 해체, 재구성을 가져왔다. 결국에는 이질적인 기능이나 요소를 결합하여 새로운 유형을 만들어내는 혼성교배로도 나타났는데, 그 유형 중 하나가 무빙 오브제이다. 따라서 본 연구는 ‘무빙 오브제’ 개념과 특성을 프랭크 포퍼와 조지 릭키의 주장을 토대로 고찰 하였다. 그리고 더 나아가 그와 관련된 현대도예의 현상들을 시각적 ‘무빙 오브제’, 매체 결합적 ‘무빙 오브제’, 참여적 ‘무빙 오브제’라는 세 가지 유형으로 구분하여 분석하였다. 현대도예에서 이러한 ‘무빙 오브제’ 유형은 현대인들의 선호도가 증가함에 따라 새로운 경향이나 장르로 정착될 뿐만 아니라 발전 가능성도 감지되기 때문에 이에 대한 더 많은 연구가 있기를 기대한다.
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