Ephedrine이 Motor Fitness에 미치는 영향

박장평,주왕기,이철규,한상준 江原大學校附設體力硏究所 1976 江原大學校附設體育科學硏究所論文集 Vol.- No.1

Twenty-five ㎎ of ephedrine of its matching placebo was administered to 200 male collegians for the study of the effects of ephedrine on motor fitness(10m shuttle-run, chinning, running broad jump and target throwing). Ephedrine improved motor fitness by 1% to 5% in the low group, but statistical analysis showed no significance in the high group. And in the case of target throwing the effect of placebo was a little more than ephedrine both in the low group and in the high group.

연기금 자산운용체계의 개선에 관한 연구

박영규,류근옥,신기철 한국보험학회 2002 保險學會誌 Vol.62 No.-

최근 들어 연금기금의 적립규모는 급속하게 팽창하고 있으며 이에 따라 자본시장과 국민경제에 미치는 영향이 증대하고 있다. 이에 본 논문은 우리 나라 연금기금 자산운용 체계의 현황과 문제점을 분석하고 이를 바탕으로 바람직한 자산운용체재 개편방안을 제시하는 것을 목적으로 한다. 자본시장에서 연금기금 자산운용은 자본의 공급을 늘려 줌은 물론 투자기간의 장기화, 기관화를 촉진하는 등 순기능의 효과가 크다. 그러나, 조사결과 현행 연금기금의 자산운용은 전문성이 떨어지고 성과 면에서는 시장의 자산운용 전문가들에 비해서 나은 성과를 나타내지 못하고 있다. 반대로 자산운용의 집중화로 시장지배권, 독립성, 전문성 면에서 않은 문제점을 나타내고 있다. 이러한 문제들은 연기금운용의 계획, 실행, 감독체계가 제대로 확립되어 있지 못하는데 기인하는 바가 크다. 이에 본 논문은 자본시장에서의 비중 제고, 외부위탁, 자산배분과 위험관리 체계구축과 기금운용위원회의 지배구조 개선, 평가 및 감독제도의 강화를 위한 구체적인 방안을 제시하고 이를 통해 향후 연금기금 자산운용이 지향해야 될 바를 모색하였다. The public pension fund size proliferates in Korea and its impact on capital market as well as on the national economy is ever increasing. This paper intend to discuss and analyze the current situation and problems in public pension management in Korea. It is found that Korean pension funds management bears series of problems. These include the dependency on government, lack of fund management and risk management expertise, as well as inadequate bureaucracy in the management hierarchy. Besides, the size of public pension funds grew to the level that can dominates the capital market and is possibly bring more problems to the market. Therefore, it is necessary to establish new pension fund management systems in Korea at this point. We, discuss and proposes the directions and the methods to achieve this goal which include outsourcing the pension fund management and establishing the public pension fund management supervisory bureau among others.

換氣窓이 설치된 中庭形 아트리움의 여름철 熱環境에 관한 測定硏究

김영철,신기식,박상동,최무혁 대한건축학회 2004 대한건축학회논문집 Vol.20 No.6

The atrium in a building is a popular design skill due to its aesthetic, open appearance. It is relatively inexpensive to build and maintain atrium, and also we can expect energy saving effect. But its indoor space is thermally different from typical space because of its tall and large shape with top light. The upper part of atrium has the thermal problem of overheating during summer season. As one of the measures to solve this problem, the ventilation windows near the top light can be used. In this study, the vertical temperatures in the atrium were measured and analysed to understand the thermal environment in the atrium and the effect of ventilation window to reduce the overheating at the upper part of atrium. The ventilation windows were proved to have the effect to lower the temperature of the upper part of atrium as 3.8℃ at the condition of outdoor air temperature of 28℃.

저열팽창성 Fe-29Ni-17Co 코바 합금의 고온균열 발생과 고온연성에 미치는 S 및 Mn의 영향

이기안,박종혁,조봉현,남궁정,김문철 대한금속재료학회 2003 대한금속·재료학회지 Vol.41 No.12

The effect of S & Mn on the hot ductility of Fe-29Ni-17Co Kovar alloy and the mechanism of high temperature cracking occurrence were investigated. It has been found that the brittle intergranular fracture at high temperature cracking is closely associated with the sulfide along grain boundary. Experimental results showed, especially when the S content was high and the Mn content was free, that small cavities could be nucleated easily on FeS particles along grain boundary and propagated fast at high temperature. The hot ductility of Kovar alloy was drastically increased with the addition of Mn and it was also increased with decreasing S content. SEM and FE-SEM analyses showed that the Mn addition in this alloy could cause ductile intergranular fracture appearance below 1150℃ by the precipitation of MnS. It was proposed from the results that the addition of Mn and optimum S content (below 30 ppm) in Kovar alloy was necessary in order to reduce the hot cracking susceptibility.

아트리움이 있는 사무용건물의 실내조명환경에 관한 측정 연구

김영철,신기식,박상동,최무혁 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1

Green Building is a sustainable building preserving the environment and saving energy and aims to provide the comfort indoor environment. KIER Green Building is the first Korean green building which was adopted the technologies of energy and resource conservation and in and outdoor environment preservation. In order to verify the luminous environment of green building and to convince the effect of daylight through atrium, the lighting environment element of KIER Green Building such as illuminance was measured and analyzed.

Two Stage 발효에 의한 고산도 식초 생산

이영철,이금용,김형찬,박기범,유익제,안평욱,최춘언,손세형 한국산업미생물학회 1992 한국미생물·생명공학회지 Vol.20 No.6

산업적으로 산도 17.0% 이상의 고산도 식초를 생산하기 위하여 반연속식인 1st stage와 유가식인 2nd stage로 구성된 two stage 초산 발효를 온도 30 ℃, 교반속도 600 rpm, 통기량 0.1 vvm에서 실시하였다. 1st stage에서 초기 에탄올 농도를 50.0 g/ℓ, 잔류 에탄올 농도를 5.0 g/ℓ로 정하여 반연속적으로 초산발효를 하고, 2nd stage 에서 발효시간의 경과에 따라 에탄올을 유가식으로 첨가하여 초산발효액내의 에탄올 농도를 5.0 g/ℓ에서 10.0 g/ℓ로 유지했을 때 산도가 17.6%인 고산도 식초를 생산할 수 있었으며, 또한 이 ??의 최대 초산 생산성은 3.3 g/ℓ·hr였다. The production of vinegar containing 16.0 ∼18.0% of acetic acid was examined in two stage fermentation consisting of semi-continuous and fed-batch type. The optimum conditions were obtained when the fermentation was carried out at agitation of 600 rpm, aeration of 0.1 vvm and temperature of 30℃. The initial and residual ethanol concentration in 1st stage were 50.0 g/ℓ and 5.0 g/ℓ, respectively, and the ethanol concentration in 2nd stage was maintained from 5.0 to 10.0 g/ℓ. The maximum productivity was 3.3 g/ℓ-hr and the acidity was 17.6% after the two days of acetic acid fermentation.

한국 씨름과 일본 스모(相撲)의 비교연구

조재기,손명준,박철민 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.4

Any nation of the world has its own culture of physical activity in form of fighting that has been uniquely developed andsucceeded. Physical activity in form of fighting is the oldest type of sport. Wall paintings which illustrated fighting and wrestling figures are found in the remains of ancient Egyptian, Niespotamian, Indian and Chinese cultures. Such activity lost its original nature gradually over time, was transformed into a game as contending for victory. It becomes a seasonal practice now(Lee Jae Flak, 1998:5-11). Since the start of the modern times, Sirumhas been formalized, systematized and developed into a game as relevant new rules have been created and prevailed. Similar types of Sirum have been practiced and developed by different nations of the world in different ways. Sumo is the national sport of Japan and is greatly supported by the nation. Topped among Japanese professional sports, Sumo is exciting the island nation as a whole and very much loved by Japanese people( Kim Ok Hee et al., 1998:1-4). Started together with Korean professional Sirum almost simultaneously, Korean professional baseball, soccer and basketball games have been firmly established in this nation and are now globally advanced with good performance in A-class international matches. In contrast, Korean professional Sirum is still far behind other professional sports in regard to game operation and active engagement by spectators. Now it is necessary to make best efforts of setting foundations for the activation and promotion of this nation's professional Sirum through a better preparation of game rules for attracting more spectators, establishment of systems for reasonable management and operation and a Letter education and training of professional Sirum players and instructors, under the motto of the right succession and restoration ofsuch traditional cultural asset(Oh Beom Tae, 1999: 11-23).

사고음 인식에 의한 교차로 교통사고 감지

김병철,박기현,한민홍 한국경영과학회 2001 한국경영과학회 학술대회논문집 Vol.- No.1(2)

This paper presents the detection-method of a traffic accident at a crossroads by the recognition of crash-sound. For the detection of crash-sound, the FFT algorithm is used and found characters of crash-sound. The result of using FFT algorithm is that crash-sound has a higher frequency than noise of roads. Then the using that result. We can detect the crush sound and know when the accident happen exactly. This method will be used the development of vision- blackbox.

Cu-Al-Ni 합금에 있어서 시효에 따른 감쇠능의 변화

조현기,박철규 경북대학교 산업기술연구소 1987 産業技術硏究誌 Vol.14 No.-

The effects of ageing on specific damping capacity in Cu-Al-Ni alloy were carried out by the torsional pendulum testing method with the computer system. The critical range of the reverse martensitic transformation was checked by measuring adiabatic scanning calorimeter and the microstructure was observed by the optical microscope. The extent of specific damping capacity in the region of the reverse martensitic transformation increases with the amount of matrix and martensitic interface. The peak of specific damping capacity appears when the amount of martensites becomes 50% The peak of specific damping capacity decreases according to ageing due to the stabilization of martensites and the decreasing rate of specific damping capacity increases. Specific damping capacity depends on the strain amplitude and non-elastic additional strain is hysteresis type. The high level of specific damping capacity found in Cu-Al-Ni alloy is most likely to due to the reversible movement of interfacial and twin boundaries on exposure to alternating stresses.

퍼지 전문가시스템에 의한 PID제어기의 자동조정

李起常,金鉉哲,朴泰建 단국대학교 1994 論文集 Vol.28 No.-

A high performance auto-tuning PID control system for the process with unknown or time-varying parameters is proposed. The proposed control system consists of the conventional PID controller, the relay feedback scheme for initial tuning and the fuzzy expert system for auto-tuning of PID Control gains. The rule base, the core of the expert system, is extracted from the wills' tuning map and the fuzzy inference engine is adopted for effective gain tuning. The simulation results show that the PID control system with the fuzzy expert system provides superior control performance to that of Litt.