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崔璋浩,成世眞,李興浩 忠南大學校 産業技術硏究所 1991 산업기술연구논문집 Vol.6 No.2
This paper deals with a Power Conversion System for Fuel Cell. The system consists of Chopper, Inverter and Control Unit. Chopper boosts the output voltage of Fuel Cell and controls reactive power. Inverter converts DC into Ac and controls active power. Controller is realized by the Software Method using a 8031AH one-chip Microprocessor. Simulated results are consistent with experimental results.
Two-step Solvable Lie Superalgebras의 Growth에 대한 소고
千章鎬,李鍾淑 嶺南大學校 基礎科學硏究所 1995 基礎科學硏究 Vol.15 No.-
We show that the growth of the two-step solvable Lie superalgebra is poly-nomially bounded and its enveloping algebra is subexponential.
김장호 동아대학교 환경문제연구소 1992 硏究報告 Vol.15 No.2
This reseach has been carried out to confirm hydraulic character and mass transfer in packing column with lattice structure packings and arranged at random. Three different system : NH₃-Air/H₂O, SO ₂-Air/NaOH, NH₃-Air/H₂SO₄ was adopted for the expermiments Latties paking Compare with conventional packing was proved low presure and high separation efficiency for high loading per tans unit. And an inflow material tested for absorption and rectification, it made an experiment under a range regular teperature, low energy and small amount of money. That made possible in simple equation, volume material transfer coefficient β_(L)·a by absorption or β_(v)·a calaculated in all range loading. The peculiarity pressure loss ∠ P/NTU_(ov) for Hiflow-ring contributed to a fall in cost of energy, a grade number of a vacuum rectification and absorption calculation.
하장호,정도영,이상호 三陟大學校 2001 論文集 Vol.34 No.1
In this paper, RFICP equipment is designed and manufactured with the aid of high frequency discharge to produce uniform plasma with high density and large diameter. And SF6 gas is used to investigate plasma characteristics. The electron density and temperature, potential dependence of SF6 plasma in accordance with its operating pressure, gas flux and input power are measured by the method of Langmuir probe. The etching characteristics of the plasma is researched in accordance with operating pressure, gas flux, input power to apply to Silicon Wafer which is used in the field of semiconductor process. The proposed RFICP equipment, in this paper, has relatively excellent etching characteristics, and is thought to be element of oxidization-sheath etching facility in semiconductor manufacturing process.
흡수에서 합성수지 충전물(Nor-Pac, 25mm)로부터 분리작용의 연구
김장호,김재홍,김종수,김형호 동아대학교 환경문제연구소 2002 硏究報告 Vol.25 No.1
This study was carried out to demonstrate the superiority of used packing in view of energy saving and efficiency of mass transfer, comparing with conventional packing. The results are as follows 1. Owing to low pressure drop under high load, 25mm NSW-ring, pp. can cause energy saving. 2. The unique magnitudes of used packing are as follows : C_(G) = 5.78 m = 0.67 n = 0.46 3. Used packing can make high efficiency including energy saving because of low pressure drop per the number of transfer unit. To rate the characteristic of packing, it should be carried out that the measurement of pressure drop per packing height and per the number of transfer unit. This study demonstrated the superiority of used packing by caning out above experiment and could be used as basic reference for design and predicting efficiency of packing tower which is filled with same packing.
최장호,박영일 단국대학교 1999 論文集 Vol.34 No.-
Under the System of Chinese Socialism, the position and the role of state enterprises is very important in Chinese national economy. However, state enterprises were getting worse. The lack of efficiency and accumulated deficit caused the loss of government subsidies each year. Therefore, need of reform in state enterprises is evident. The reform with various new policies has begun from 1978 by planning and implementation. Chinese private enterprises has been taking rapid growth. But it still shows many problems. From these empirical studies, many problems of the privatization of state enterprises were found. Those are government interference, ownership structure, conditions of competitions between companies, financial difficulty and so on. As a conclusion, some solutions and future directions for more effective privatization of state enterprises were suggested. The reform of state enterprises in china may be the precedent of the reform of Korea's public enterprises.
孫章鎬,鄭雲夏 慶北大學校 齒科大學 1984 慶北齒大論文集 Vol.1 No.1
The purpose of this study is to research the mandibular injuries on war-patients in Korea. Making the 116 patients with the mandibular injuries who came to the Dept.of Dentistry of Korea Veterans Hospital from January in 1979 to september in 1982 an object of this study, using the radiographs and patient records. Following results were obtained; 116 war-patients with the mandiblar injuries showed mandibular bony defects (70.7%) had higher frequency than mandibular fractures. Average number of fractue lines of mandible patients were 1.9 lines, and mandibular body the highest frequency. (36.6%) According to the type of fracture , single fracture showed the frequency fo 59.0%, and multiple and comminuted fracture showed the frequency of 41.0%. Among these, unilateral fractures(73.8%) showed the frequency as about 3 times as bilateral fractures (26.2%). Among the cases of mandibular bony defects, partial bony defects were 53.7%. In this bony defects, mandibular angle region (31.8%) showed the highest frequency. Among the cases of mandibular bony defects, sectional bony defects were 46.3%, and the region between the mandibular midline and the first molar showed the highest frequency, and unilateral sectional bony befects showed higher frequency as 1.7 times as bilateral sectional bony defects.
金長好 동국대학교 국어교육과 1994 동국어문학 Vol.6 No.-
먼저 떠나는 사람에게 이렇게 인사 말씀을 전할 기회를 마련해 주신 과의 여러 선생님들과 동학 여러분들께 감사의 말씀을 드립니다. 그렇더라도 오늘날 제 사람됨과 공부의 기틀을 마련해 주신 제 스승에 대한 말씀부터 드리는 것이 도리요, 예절일 줄 압니다. 여러분도 다 그렇겠지만 아직은 우리 학계가 스승을 골라잡게 되어잇지 않습니다. 요행히 저는 스승을 잘 만난 사람 중의 하나입니다. 소학교 때 장제진 선생, 중학교의 이시바시 겐기찌 선생, 그리고 대학에 가서 양주동 선생, 손진태 선생, 이분들의 간회가 없었던들 제 학문의 길은 아예 열리지 않았을것입니다. 그분들은 그리면서 제 간략한 이야기를 펴 보기로 하겠습니다.
金章鎬 淑明女子大學校 1988 論文集 Vol.29 No.-
This paper investigates empirically the characteristic features of the wage system in the Korean private business sector. In particular, the paper is concerned with the occupational difference in the process of wage determination and in the method of wage payment. The empirical investigation relies mazily upon the data source which is obtained from both the various existing plant-level sample survey results about Korean wage system and the wage tables of the several individual business establishments. The main empirical findings of the study are as follows. In the first, in the process of wage determination worker's charateristics including years of schooling, period of job tenure and sex difference are much more important factors than job characteristics, even though the Korean wage system seems superficially to be a system in which job characteristics are regarded importantly. Secondly, there are several important differences between the wage system for the blue-collar worriers and one for the white-collar workers particularly in the method of wage payment and the structure of job ladders. This occupational difference in wage determination is one of the important reasons for the existence of a big earnings gap between these two kinds of The worker groups. But it is difficult to find out any rational economic reasons why this kind of differentiation prevails in Korea except the reasons caused to custom and cultural tradition. In conclusion, the empirical evidence of the paper suggests that these kinds of factors originated mainly from custom and tradition should be eliminated in order to increase labor market efficiency and to enhance the equity in earnings distribution.