자기공명영상용 라디오주파수 코일의 제작에 있어서 동조 및 매칭에 영향을 미치는 전기 용량 값들의 실험적 측정

양경승,신용진,김영섭,한재진,이성길,김승국,김영근,지연상 조선대학교 기초과학연구소 2003 自然科學硏究 Vol.26 No.-

Radio frequency coil which is capable of transmit and receive the signal has been used for image production in magnetic resonance imaging(MRI). Tuning and matching characteristic of radio frequency coil is major factor determining the image quality. In experiment the used coil was called a staircase type coil which is simplified the birdcage coil and referred to a simple LC resonant circuit. Because the inductance values of the coils are fixed coil performance was examined by changing of the capacitance values. In this study capacitance values were experimentally determined to increase of-tuning and matching effect in junction of the coil between coil endring and BNC cable to obtain the high quality of image.

韓國社會體育의 實態와 改善方案

양태홍,노재준 서울保健大學 1989 論文集 Vol.9 No.1

The subjects are 787 of urban. In order to achieve the objective there requires to maximize basic systems of sports for all. The results are as follows; 1. The mass media should be effectively utilized to introduce the public people to sports-technique and various sports programs so that they may become more conscious of sports for all. 2. The sports for all facilities in each local community should expand public sports-facilities in paralled and balance. 3. An urgent thing is that leaders of sports for all should be efficiently cultivated and dispositioned if sports for all is to preserved in active and vital state. 4. So urgent and important is the maintenance of organization and secure financial procurement, which will serve to form a basic frame essential to efficient development of sports for all. 5. Another urgent task is in developing and distributing various effective programs suitable to need of respective local characters and natures. The progams are a factor prorequisite to increasing the sport-loving populace.

사이클 모사 프로그램을 이용한 대체냉매 냉동공조 시스템의 열역학적 해석

박량한,김영재 한국공업화학회 2004 응용화학 Vol.8 No.2

The system air-conditioner, which has one outdoor unit connecting several indoor unit units, can provide more energy saving and better environmental conditions than the conventional air-conditioning systems. But it is difficult to experimentally analyze behaviors of system air-conditioners due to various load conditions and combinations of indoor units. Therefore, it is important to develop a cycle simulation program for predicting the performance of system air-conditioners without complex experiments. The cycle simulation program for system air-conditioners consists of several subroutines for simulating indoor unit, outdoor unit, compressor, and expansion devices, and for estimating the thermodynamic and transport properties of the refrigerants and moist air. It was programmed with Digital Visual Fortran for the main simulation code and Visual Basic for the graphic user interface.

발포폴리스티렌비드를 사용한 경량콘크리트의 역학적 특성에 관한 실험적 연구

주재금,이종찬,오세출,유택동,정광량,서치호 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

The purpose of this study is to obtain basic data on the properties of the lightweight concrete within expanded polystyrene beads for various applications in the field. Inquiring into the change of the properties as altering cement matrix mixture and the capacity mixture ratio of expanded polystyrene beads, the mixture plane of this study is set up as W/C is fixed 50%, expanded polystyrene beads is increased 10% from 0% to 80% per 1m³ and the ratio of cement:sand in the cement matrix is 1:0, 1:0.5, 1:1. The results of this study are as follow. The slump as changing the mixture ratio of expanded polystyrene beads decrease smoothly until mixture ratio 50% but decrease rapidly being in excess of 50%. The density decrease regularly as the mixture ratio of expanded polystyrene beads increase but the ratio of strength decrease. The difference of cement matrix. The strength of cement matrix having more sand mixture ratio relatively decrease rapidly as increasing the mixture ratio of expanded polystyrene beads. It is judged decreased strength phenomenon as the quantity of coherent material created in the mixture decrease rapidly.

우리나라 여성 노동력 상태의 동태적 특성 연구

남재량,류근관 서울대학교 사회과학연구원 1999 한국사회과학 Vol.21 No.4

본연구는 「경제활동인구조사」원자료를 패널자료 형태로 연결시켜 우리나라 여성노동력 상태의 동태적 특성을 밝히고 이를 통해 저량측면에서 나타나는 전형적 사실들에 대한 설명을 시도하고 있다.분석에 따르면 여성의 강한 비경제활동 인구화 경향과 높은 실망실업효과가 우리나라여성노동력의 가장 중요한 동태적 특성이다.이러한 특성은 시간에 걸쳐 점차 약화되고 있어서 빈번하던 여성의 노동력상태 변화정도가 점차 하락하는 추세를 보인다.이러한 유량 요인들이 경제활동참가율과 실업률의 성별격차 및 그 격차들의 시간에 걸친 하락이라는 저량 측면의 전형적인 사실들을 나타나게 한 주요 원인이다. This paper constructs a sequence of moving panel data using the raw data files of the Korean current population survey, a monthly household survey conducted by the Korea statistic bureau.Analysing these panel data, this paper finds that strong tendency toward no labor force and a high discouraged worker effect are two major characteristics of the Korean female labor force.These characteristics cause both female labor force participation rates and the female unemplyment rates to be lower than their male counterparts.These characteristics are commonly observed for each age and education subgroup, but are decreasing over time.

한국 레슬링 대표선수의 유산소 및 무산소 능력에 관한 연구

윤재량,전해섭 韓國體育大學校 1991 論文集 Vol.14 No.-

The purpose of this study was to characterize the maxmum aerobic power and maxmum anaerobic power of eilte Korean senior wrestlers and then to identify physiological differences between elite Korean senior wrestlers and successful world-class wrestlers. Elite Korean senior wrestlers (n=21) were measured for maximal aerobic power and blood lactate concentration after competitions. The results of this studt was follows ; 1. Maximal Aerobic power: On the everage (±SD) elite Korean senior wrestlers and a VEmax of 141.56±21.99ℓ/min, VO2max of 60.24±5.16ℓ/kg/min, VO2/HR of 24.01±5.47ml/beat, HRmax of 197.5±8.8bpm, BFmax of 64.57±6.43f/min, VCO2max of 4.39±.070ℓ/min, AT - % VO2 OF 76.55±2.92%, duration of treadmill run of 14.43±1.57min, HLmax after treadmill run of 8.34±1.71mM. 2. Maximal Anaerobic power: (1) Muscle power ; Elite Korean senior wrestlers had a 450±104 watts(6.7 watts/kg) for leg power, 6.1±1.0mM for HLamax, 1350±311.2kpm/min for total work in wingate test. (2) Blood Lactate Concentration ; HLamax after competitions for KOR wrestlers and FRA of GDR wrestlers were 11.83±2.73mM and 14.53±3.55mM, respectively. However, no significance differences between two groups in HLamax were found at the competitions. The results of this study indicated that anaerobic power may be the most important physiological factor contributing to success of the junior wrestlers. and cardiorespiratory fitness may be the most important physiological factor of the senior wrestlers. In light of this, the less successful junior wrestler might benefit by training to improve anaerobic power.

有酸素性 運動能力 및 體指肪에 대한 웨이트트레이닝의 效果

尹在梁 師範大學 體育硏究所 1987 서울大學校 體育硏究所論集 Vol.8 No.2

The purpose of this study was to determine the effect of weigh training on aerobic work capacity and body composition. Eight healthy freshmen participated in a eight-week, progressively increasing weight training program. Aerobic work capacity and body composition are measured before and after the weight training program. The results showed statistically significant effect of weight training on muscular strength and body composition, but little statically significant effect of weight training on cardiorespiratory function. The results of this study were as follows: 1. Eight weeks of weight training producd little or a little increases in VO max(0.06 l/min: 2.7%) and PWC???(60.88kpm/min: 8.4%). 2. Eight weeks of weight training produced significant increases in body composition (3.61% body fat).

Esmolo과 lidocaine의 혼합사용시 기관내 삽관에 따른 혈압과 심박수에 미치는 영향

하정량,손용,김태요,윤재승,송윤강 圓光大學校 醫科學硏究所 1999 圓光醫科學 Vol.15 No.1

Background: Ultrashort acting β-adrenergic antagonist, esmolol and local anesthetics, lidocaine are well known about effects of hemodynamic stabilization to tracheal intubation. But, the effects of these drugs are still controversial. The aim of the present study is to assess whether a combination of both drugs are more effective than either drug alone. Methods: Forty eight patients, ASA physical status Ⅰ or Ⅱ, were randomly assigned to one of four groups (n=12 each): control (Group S), esmolol 1 ㎎/㎏ (Group E), lidocaine 1 ㎎/㎏ (Group L) and esmolol-lidocaine combination (Group M). Anesthesia was induced with thiopental 5 ㎎/㎏ intravenously, and then saline, esmolol, lidocaine and combination drug were administered as an intravenous bolus, and immediately followed by succinylcholine 1.5 ㎎/㎏. Tracheal intubation was done 90 seconds after intravenous injection of drugs, respectively. Systolic and diastolic blood pressure and heart rate were measured before induction and every minute for 5 minutes after tracheal intubation. Results: There was a significant attenuation in systolic, diastolic arterial pressure and heart rates after tracheal intubation in esmolol-lidocaine group compared to other three groups. Conclusions: Combination of esmolol 1 ㎎/㎏ with lidocaine 1 ㎎/㎏ seems to be useful for attenuation of the increases in blood pressure and heart rates compare to either drug alone after tracheal intubation.

공기업 민영화에 대한 태도의 특성과 형성요인에 관한 연구 : 한국전력 민영화에 대한 여론조사를 중심으로 A Study Focused on the Survey Result about the Privatization of KEPCO

이병량,이재희 서울대학교 행정대학원 2003 行政論叢 Vol.41 No.1

공기업의 민영화는 IMF 외환위기 상황에서 등장한 김대중 정부가 추진한 정부개혁의 구체적 하위 영역으로 자리매김하였다. 공익 서비스산업의 일부문인 한국전력공사의 민영화 계획도 이런 맥락에서 추진되었다. 이 같은 한국전력의 민영화는 계획의 착수와 동시에 치열한 사회적 논란을 불러일으키면서 공기업 민영화라는 정책 자체가 내포하고 있는 다양한 쟁점을 모두 부각시켰다. 이 논문은 한국전력의 민영화 과정에서 부각된 쟁점들이 어떤 것들이 있으며, 이러한 쟁점들이 국민들이나 전문가들의 여론에 어떻게 반영되었는지를 분석하였다. 민영화는 정책의 결과에 대한 경제적인 판단이나 정책의 결정 및 집행 과정의 절차적 정당성에 대한 논란 뿐 아니라 정책 자체의 정당성에 대한 이념적 논쟁까지 불러일으키고 있었다. 국민들이나 전문가들은 이런 쟁점들에 대한 다양한 견해의 표명을 통해 민영화에 대한 자신의 태도를 드러내었다. 국민들이나 전문가들은 민영화가 가져올 결과가 긍정적이지만은 않을 것이고, 또 현재의 민영화 절차에 대해서도 만족스럽지 않다고 생각하고 있었다. 그러나 이런 우려와 불만이 반드시 민영화 그 자체에 대한 반대로 이어지지는 않고 있었다. 이는 국민들과 전문가들의 민영화에 대한 태도가 경제적 이해나 정치적 절차의 정당성에 대한 판단과는 다른 차원, 즉 신념이나 편견 혹은 이념적 분위기에 의해 결정되고 있음을 반증하는 증거로 해석될 수 있다. The privatization of a public enterprise is considered as a substantial sub-part of the reformation of the Kim Dae-Jung government which took over the administration in the middle of the IMF financial crisis. The privatization plan of the Korean Electric Power Corporation(KEPCO), a sort of public utilities, was also put in this context. This plan of the KEPCO privatization had instigated intense social controversies from the start and eventually unfolded all the diverse issues of the government policy about the privatization. Here we analyze those issues and how those were reflected on the public opinions of the people and the experts. The issues have been- raised about not only the economic measurements for the consequences of the government policy and the procedural adequacy of the policy decisions or the administrative processes but also the ideological justice of the policy itself. People and the experts have constituted their position through the process of revealing their various opinions on these issues. Generally, people or the experts deemed the supposed consequences from the privatization negative and unsatisfied with the present processes of the privatization. However, these concerns or dissatisfactions have not been directly concluded to be against the privatization itself. This could be interpreted that it showed that the position about the privatization was not drawn from the level of the economic interest or justice of the administration but from the level of the belief or prejudices or more likely from the ideological atmosphere.

나노크기 은촉매를 이용한 에틸렌 산화반응

이상량,정유성,신재순,김영철,박남국 한국공업화학회 2002 응용화학 Vol.6 No.2

Partial oxidation of ethylene to ethylene oxide was studied using silver caralystsiadeposited on a low surface area support, such as d-alum(< 1 m^2/g). Theselectivity to ethylene oxide has been reported to be related to the surface area ofactive silver species. Thus the activity of silver catalysts was studied in view of theparticle size of Ag.The catalyst prepared by water-alcihol method showed higheractivity. The addition of Cs as a promoter at higher temperature was observed toincrease catalytic activity of silver catalysts, presumably by increasing the surfaceares of active silver.