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      • A Thyristor Macro-Modeling for Computer Aided Cycloconverter Simulation and Design

        黃樂壎 世明大學校 1992 世明論叢 Vol.2 No.-

        사이크로 컨버어터의 경우 임의의 초기 상태로 부터 정상 상태 계산을 위한 일반적인 방법으로 얻어진 결과를 논했다. 제안된 방법은 시스템 방정식의 공식화를 위해 Euler Backward Alogorithm과 Jocobian 계산이 이용되었다. 또한 연속적인 적분 기간에서 초기 상태에 대한 반복된 값의 계산을 위한 Newton-Raphson 방법을 이용했다. 그리고, 그 적용으로 제작장치의 실험결과와 같은 결과가 얻어졌다.

      • 열역학 제2법칙에 의한 압축과정의 효율에 관한 고찰

        安樂善,申光燮 忠州大學校 1993 한국교통대학교 논문집 Vol.28 No.-

        I have studied the efficiency of compression procession by the second law of thermodynamics. I have obtained the result as following: 1) In case of heating discharge, it can be defined as other efficiencies if we are regarded as the position output instead of the negative input with quantity of changing into the exergy. 2) The exergetic efficiency stand in need of inviting atmospheric temperatures. 3) Conventional efficiencies of the adiabatic compression process such as isentropic efficiency and polytropic efficiency can be explained as exergetic efficiencies replacing the reference atmospheric temperature with temperature which can be determined in the process itself.

      • SM20C강의 피로형태와 온도가 피로강도에 미치는 영향에 관한 고찰

        安樂善 忠州大學校 1998 한국교통대학교 논문집 Vol.33 No.1

        With respect to strictural carbon steel(SM 20C), research was carried out into the growth ratio of fatigue crack on the surface materials at a slip band occurance and the crack propagation curve of the surface materials. Obtained results are summerized as follows. 1. It does not change the crack propagation curve adding to more stress after a slip band occurance at a base stress. Because, under the base stress, the hardness value of surface test piece has a little stage. 2. By base stress, at the crack propagation stage adding to more stress, has occurance accelerating crack propagation. 3. By high stress, there is a dislocation structure near crack of fatigue steel and the fatigue crack according to slip face. The crack make growth by the slip face.

      • 연삭시표면압력이 가공효과에 미치는 영향에 관한 고찰

        安樂善 忠州大學校 1999 한국교통대학교 논문집 Vol.34 No.1

        The surface rolling, one of the plastic working processes, provides good surface roughness with the reduction of diameter and the increase of surface hardness. In this study KBC bearing 6000zz bearing were used for surface rolling on SM20C steel the results obtained as follows : 1) The good surface roughness can be obtained with rolling surface radius of curvature of 24mm after the 2nd rolling. 2) The reduction of specimen diameter of SM20C steel were -10.8mm due to rolling.

      • Group Method에 의한 분산운영체제 구성

        정낙우 서강정보대학 1991 論文集 Vol.10 No.-

        This study is considered whether the dynamic reconfigurable dispersive management system can be formed or not by applying. "message oriented mechanism" or "data-gram" method which is transmitted to each message without prior establishment of communication route in the message communication method between process affiliated with different "groups". This paper presents a program abstraction so that autonomous processes, interacting on a resource to provide related service.

      • The Effects of Information System Technology on The Savings Institutions

        정락채 호남대학교 정보통신연구소 1992 정보통신연구 Vol.1 No.-

        In a study involving 52 large organizations in the savings institutions industry, the relationship between information systems technology (IST) structure and competitive strategy was investigated based on structural contingency theory. Structural contingency theory argues that organizational performance is contingent on the congruence between structure and contingent factors. Competitive strategy is considered to be the most important contingent factor among organizational context variables. Two dimensions of IST structure and three types of competitive strategy were employed to test a contingency model. It was found that enhanced congruence between IST structure and competitive strategy was associated with higher competitive advantage. The structural dimension significantly associated with the "defender" strategic stance was more centralized and more integrated application of IST, while the structural dimension significantly associated with "prospector" positing was more decentralized and less integrated application of IST.

      • 墨子의 功利主義的 關心과 그 政治思想

        전락희 단국대학교 1998 論文集 Vol.32 No.-

        Mo Tzu's surname was Mo. his given name was Ti, and he was a native of the State of Lu. Both his birth and death date are difficult to ascertain. Various scholars have offered quite different conclusions. but the most reliable view seems to be that he was born about the Thirtieth year of the reign of the Chou King Ching(490 B. C.) and died about the Twenty-third year King Wei-lieh(403 B. C.). As for the events of his life, we know next to nothing, because of the lack of documentary evidence. Mo Tzu's universal love is the basic element of his political theories, and reverence for heaven, proving the existence of spirits, identification with the superior, and economy of expenditures are its branches. Anti-fatalism, anti-music, and simplicity in funerals are merely other issues upon which circumstances provoked him to take such stands. Mo Tzu's political theories found its starting point in the choice between benefit and harm, and went on to establish the doctrines of agreement with the superior, of the will of Heaven, and of the proof of the existence of spirits, to insure the practice of universal love. Mo Tzu, having established the agreement with the superior as a political sanction, still felt that to be inadequate: he thus proceeded to promote theories of the will of Heaven. and about the existence of spirits, in order to have religious sanctions as well.

      • 國民體育振興政策의 關係法領에 따른 行政行爲實態에 대한 調査硏究 : 國民體育振興法中 學校 및 社會體育振興關係法令을 中心으로

        朱洛瑞 師範大學 體育硏究所 1986 서울大學校 體育硏究所論集 Vol.7 No.1

        Modern states have guaranteed the right of economic and social live as well as the civil liberties, and also intervened actively in national life for the public benfit. In order to actualize these things, states assume the form of "Administrative state" built up the executive strength. Administration means the legal action which can realize the national aims, one is the aim for the existence and activity of nation itself, and the other is the social aim for the public benefit. Therefore, korea has adopted various policies enacted the law of Administration, and put it in operation on behalf of the performance of the aims. As a matter of fact, the performance of the policy for national existence, development and benefit clings to the establishment of proper national view through political education. Generally, education contains the dualism of educational view. So to speak, they are "Homo Sapiens" and "Homo Faber". If these two can correspond with each other and develop, the country will improve for sure. This study analyzes some problems resulted from training human bodies and the effectiveness of the law of National Physical Education. 1. People don't have sound mind due to the lack of experience, understanding, and participation in physical education. 2. When the law of National Physical Education was established, the assumption of omniscence, the adoption of best-fitted suggestion, the establishment of the best purpose, and the image of rational economic person were not considered. 3. The law of National Physical Education doesn't include the image of desirable future, the perspective of desirable development, the line of preferable actions, and the policy-intention. 4. It is so passive to participate in the physical activities in schools and work places, and to observe the law of Administration. The administrative function containing the execution and control of the law is very weak, and the advanced specialty is short. 5. The good understanding and participation in physical education should be made by the appropriate educational view, and as for establishing policies, optimal model must be introduced. The execution of the law of National Physical Education should have effect on everyone. And it is very urgent to suggest the concrete devices about the law of National Physical Education for the sake of making walfare state.

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