플라즈마 이온주입기에서의 시변환 쉬스 연구

김곤호,김건우,김영우,최영도,김종식,김상진,한승희,홍문표 漢陽大學校 工學技術硏究所 1998 工學技術論文集 Vol.7 No.1

Abstract- In a plasma source ion implantation, the target is successively biased by negative voltage pulses with an intrinsic finite rise time, resulting in the time-dependent sheath formation around the target. Measurement of time-dependent sheath during the pulse rise show the ion matrix sheath development which is in proportion to square root of time and pulse rise rate over plasma density but independent of the ion mass.

음식물류폐기물 공공 자원화시설 운영에 관한 연구 (Ⅰ)

홍용표ㆍ김혜선ㆍ김웅용ㆍ신현곤(Yong Pyo HongㆍHye Sun KimㆍUng Yong KimㆍHyun Gon Shin) 유기성자원학회 2016 유기물자원화 Vol.24 No.1

본 연구는 음식물류 폐기물 공공 자원화 시설 운영의 문제점과 제도 개선방안을 위하여 실시하였다. 기존 음식물류 폐기물 공공자원화 시설에 대한 실태조사를 통해 운영에 따른 문제를 분석하였으며, 이를 위하여 음식물류 폐기물의 발생량 및 자원화 현황, 공공 및 민간 자원화시설 현황, 전국의 주요 음식물류 폐기물 공공자원화 시설의 실제 운영과정에서 나타난 문제점을 분석한 결과는 다음과 같다: 현재 국내 음식물류 폐기물의 분리 수거량은 약 97%인 것으로 나타났다. 그리고 대부분의 공공 자원화시설은 음식물류 폐기물의 자원화가 아닌 단순처리에 급급한 것으로 나타났으며 경제성도 없는 것으로 분석되었다. 특히, 바이오가스시설 대부분은 실시설계와는 달리 가스 생산량 및 수요량이 전혀 맞지 않는 것으로 나타났다. This study is conducted to find out problems of the public food waste recycling facility and its improvement. Through a research on the actual condition, it is possible to analyze the problem of operation. Moreover, for this improvement, with analysis of the current state of recycling rate including its generation and the problem that can be shown from the real operation of the public/private food waste recycling facility, the results are as follows: It can be shown that the current amount of domestic food waste resource recycling is about 97 %. Almost every public recycling facility is analyzed to be economically infeasible and is not for recovery but to simple disposal. Especially, most of Biogas facilities appeared that amount of production and demand is not appropriate differed from enforcement design.

음식물류폐기물 공공 자원화시설 운영에 관한 연구 (Ⅱ)

홍용표ㆍ김웅용ㆍ신현곤(Yong Pyo HongㆍUng Yong KimㆍHyun Gon Shin) 유기성자원학회 2016 유기물자원화 Vol.24 No.1

본 연구는 음식물류폐기물 공공 자원화 시설 운영의 문제점과 제도 개선방안을 위하여 실시하였다. 현재 운영중인 음식물류 폐기물의 가동율 현황과 자원화 시설의 확충 계획에 대한 분석을 통해 시설의 무분별한 신규건설로 인한 국가의 예산이 낭비되지 않도록 그 대안을 제시하였으며, 그 결과는 다음과 같다. 공공 자원화시설 신규 확충보다는 기존 민간 자원화시설을 활용하여 예산을 절약하고 음식물류 폐기물의 안정적인 처리는 물론 자원순환을 촉진시킬 수 있는 정책전환이 필요하다. 음식물류 폐기물을 친환경적인 방법으로 안정적으로 처리하기 위해서는 제도개선이 필요하며, 이를 위해 민간 자원화시설 가동률 저하를 줄일 수 있는 준공영제 도입이 필요하다. 또한, 공공 자원화시설의 검증된 기술과 경제성 확보 방안 마련이 필요하다. This study is conducted to find out the problems of the public food waste recycling facility operation and its improvement. In order to save the national budget by analyzing plans to expand including operation rate for the food waste recycling facility, the alternative ways are suggested. The result can be as follows: Policy switch is required not only to save budget and stable disposal of food waste but also to promote resource recycling rather than expanding public facilities. In order to change the policy for stable and eco-friendly disposal of food waste, it is necessary to adopt semipublic system that prevent the decline of the rate of operation of private resource recycling facility. Furthermore, it is required to prepare both qualified technologies of public resource recycling and the ways of profitability secure.

척추 수술시 자가혈액 수혈기를 이용한 자가수혈의 효과

김명호,유문집,유석주,박진영,정홍근,박희곤,문기혁 단국대학교 2000 論文集 Vol.35 No.-

Study Design : Spine fusion with fixation procedure is associated with substantial operative blood loss, which frequently necessitates transfusion. The authors evaluated the safety and efficacy of intraoperative autotransfusion using Cell Saver during spinal surgery. Summary of Literature Review : It has been reported that the contraindications to the use of intraoperative autologous transfusion are malignancy, infection, and gross wound contamination. Objectives : The purpose of this study was to evaluate the safety and efficacy of intraoperative autotransfusion using Cell Saver during spine surgery. Material and Methods : We retrospectively reviewed 62 patients who had operation for lumbosacral spinal stenosis and hypotensive anesthesia. Among them, Group Ⅰwhich received autotrans fusion using Cell Savers included 26 patients with fusion of 2 segments, and Group Ⅱ as control group included 13 patients. Group Ⅲ which received autotransfusion using Cell Savers included 17 patients with function of 3 segments, and Group Ⅳ as control group included 6 patients. We analyzed the amount of intraoperative blood salvage using a Cell Saver, the amount of total homologous transfusion amount, intraoperative blood loss, the amount of postoperative drainage amount and perioperative changes of hemoglobin, hematocrit and platelet count. Results : There was no statistical significance between Cell-Saver group and control group in amount of total homologous transfusion and intraoperative(except in 2 segment of fusion using cell saver: 86.5% increased) & postoperative blood loss(p>0.05). The circulatory balance(amount of intraoperative blood salvage using a Cell Saver plus amount of total homologous transfusion minus amount of total blood loss) was statistical significance between Cell-Saver group and Control group. The Cell-Saver group had positive balance and Control group had negative balance. There were no statistical differance in the evolusion of hemoglobin, hematoocrit and platelet count between Cell-Saver group and Control group(p>0.05). There was no transfusion reaction and thromboembolic disease in all group. Conclusion : In retrospective study, Cell Savers was safe and immediate availability in orthopedic surgery such as spinal surgery. It was effective methods for storing a sufficient volume of blood for spine surgery without affecting the patient's postoperative hemodynamic ststes, too. It was possible to operation without intraoperative homologous blood transfusion in 2 or 3 segment fusion. We may need further study.

각형강관을 이용한 스틸콘크리트 단위벽체의 축내력에 관한 실험적 연구

김곤묵,홍석일,이대현,김호수 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)

The steel house, one of new construction methods, has been mainly adapted to a lot of housing and developed in construction skill. But the disadvantage of steel house system is that the system is limited to small housing because it is composed of light gauge steel. Therefore, in order to solve it, this study presents the new system which is made of a carbon steel square for general structural purpose. The framed wall system which is presented in this study is composed of the steel stud members by using the carbon steel square and is reinforced by the horizontal members called runner. So, this system has more sufficient strength and axial load capacity than the steel house wall system. Besides, this system gives us the improved effects of the adiabatic and sound insulation by filling up the autoclaved lightweight concrete. Accordingly, this study evaluates on the axial capacity of unit wall of the system through the experimental study according to the experimental variable and analysis on the structural performance of the framed wall system using carbon steel square.

장기간 요가운동이 알코올의존자의 면역글로블린에 미치는 영향

민범일,김홍식,김성곤 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.1

The purpose of this study was to investigate the effect of Yoga exercise on Immunoglobulin(IgE, IgM, IgD, IgG, IgA) in the alcoholism. The subjects involved in this study consists of 14 people who were confirmed to have alcohol-related problems by DSM-Ⅳ(1994) of American Psychiatric Association and were diagnosed as alcoholism in hospital. The subjects were classified into yoga exercise group(7 people) and control group(7 people). The yoga exercise group participated in the exercise programs named Hatayoga and Asana. This treatment was performed an hour per day, three days a week for 16 weeks while the control group watched TV for the same time. A paired t-test was used to examine differences between pre, post 8weeks and post 16weeks test scores. The results are as follows. After 16 week yoga exercise, there was a significant increase(p<.01) of Immunoglobulin (IgM, IgA(p<.05) & IgG) in the experiment group, compared with the control group. In terms of periodic change, the experiment group showed a significant higher result(p<.01) than the control group after 16 weeks, rather than after the 8 weeks. The result of this study above indicates that the long-term low intensity exercise can activate Immunoglobulint in alcoholism.

시각장애자용 문자인지 장치에 관한 연구

허웅,조병서,김진곤,함광근,민홍기 明知大學校 産業技術硏究所 1994 産業技術硏究所論文集 Vol.13 No.-

In this paper, we implemented the hangeul tactile recognition system for the Blind. The system is consist of hardware part and software part.The hardware part is consist of a scanner interface image processing system, a electro tactile output device inter and auser interface. The software system consist of pattern learning routine,image processing and character pattern output routine, file management and operation window routine. The 16 by 16 of return electrode is driven by a electro-tacttile device. The recognition experimention distinguished learning beforefrom learning after,after learning the recognition rate is higher than learning before. As a results of experimentation before and after learning,the later is superior to the former. Therefore,if learning is increased, we can take higher recognition rate.

천장을 이용한 지하통로의 자연광 유입 설계

지미정,임홍수,김곤 강원대학교 조형예술연구소 2008 조형예술연구 논문집 Vol. No.9

Using the efficient design of a skylight through underground passages promises a sort of optimal amount of the natural light penetrated into the inner space. It is a matter of course that natural light has a positive role on pedestrian of the underground. This study aims to find appropriate amount of illumination in the visual environment. A prototype of the space geometry has been established as follows; the room's size 6m × 20m, the window's size is 0.25m × 20m × 2m, 1m × 1m ×10m, 2m × 1m × 5m, 4m × 0.5m × 5m. A series of illuminance level has measured on the plane of the horizontal 3.36m and vertical 10m, when two windows's distance is 3m apart. Based on the size and location of the window, the effects of natural light are addressed quantitatively and comparing the brightness of each case reveals the best alternative.

Y₂O₃함량에 따른 Al₂O₃- ZrO₂계 세라믹스의 특성

이형복,이홍림,홍기곤,김준태 연세대학교 산업기술연구소 1986 논문집 Vol.18 No.2

In this work the effect of Y₂O₃ content on Al₂O₃-ZrO₂ ceramics was studied and compared for coprecipitation and powder methods. Al₂O₃-ZrO₂ ceramics prepared by coprecipitation method showed the maximum M.O.R. value at 15 mole% ZrO₂ content for both 1.5 and 3 mole% Y₂O₃ addition, on the other hand, the ceramics prepared by powder method showed the increasing strength with increase of ZrO₂ content over the range of this work.

지난 2년간의 학회지 "신경정신의학" 심사 평가보고

김찬형,김세주,김도관,김성곤,박원명,송동호,박용천,이영문,오강섭,정영철,이상열,김주한,이동영,이헌정,함병주,김율리,김문두,김정진,이강욱,천근아,김재진,홍진표,홍승철 大韓神經精神醫學會 2007 신경정신의학 Vol.46 No.6