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몽골 광물자원개발 분야 진출방안에 대한 연구 - 외국과 한국기업의 성과 비교분석 -
박정후 한국몽골학회 2017 몽골학 Vol.0 No.50
In this research, I will analyze and evaluate the outcome of Korean companies which entry into sector of mineral resources in Mongolia. Through this, presented a more efficient approach to Korean companies which had already entered the sector of mineral resources in Mongolia, or planning to advance into this sector in the future. It also provides good references case for Korean companies to consider successful case of foreign multinationals' negotiation process with the Mongolian government and management method in the sector of mineral resources in Mongolia. Based upon this, it present cooperative way to government of Korea and Mongolia in the sector of mineral resources in Mongolia. And also provide advancement strategies to the Korean enterprise which advance into the sector of mineral resources in Mongolia in the future.
Analog Computer Simulation 에 의한 Ward-Leonard Servo System의 特性解析
朴正后 釜山水産大學校 1976 釜山水産大學 硏究報告 Vol.16 No.1
In the design of a servome chanism the designer must ensure that his system will meet the steady-state accuracy conditions, such as the typical requirement that the position error must be within certain tolerances specified by the customer; further the designer must ensure that the transient or dynamic performance is satislactory in that the steady state is reached in minimum time and that the transient errors are not exessively large. In general there is no satisfactory method of evaluating the transient error signal other than evaluation the transfer-function defining the error for the likely system input. An analog computer simulation of the system, therefore, is virtuall the only reasonable method of checking transient servo errors. In this paper to improve the response of the Ward-Leonard position servo system, the transient respose and error were evaluated from the transfer function and compensated to meet the values required and checked by the use of analog computer simulation.
반응성 마그네트론 스파트링 프로세스의 제작 및 AI계 박막형성에 관한 연구
박정후,김광화,조정수,곽영순 한국전기전자재료학회 1991 電氣電子材料學會誌 Vol.4 No.3
반응성 마그네트론 스파트링 프로세스의 제작 및 특성과 이 프로세스에 의해 작성된 질화알미늄 박막에 대하여 서술하였다. 마그네트론에서 자계와 압력변화에 따른 글로우 방전특성을 구하였고 이 때 발생된 플라즈마의 전자온도 특성을 구하였다. 저기압($10^{-3}$~$10^{-4}$ torr)에서도 안정된 방전으로 스파트링을 수행할 수 있었으며 이 스파트링에서 제작된 조건에 따른 질화알미늄 박막의 형성조직을 SEM사진과 Xray회절에 의하여 분석하였다.