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金永卓 성균관대학교 대동문화연구원 1975 大東文化硏究 Vol.10 No.-
Seo Jeong-Joo (1965-) is one of the representative contemporary Korean poets. His works make an epoch of the development of modern Korean poetry. To study his poetry and life is to study the whole aspect of modern Korean poetry and poets; to understand the fear and solitude which is the main stream of his life will help us understand the characteristic quality of Korean life. It would be not so important to study how he lived in the spotted history of Korea as to do how we are influenced by the poet. The view of life and the world of poetry he attained contain so much and so many elements that any one material or proof or theory cannot answer. So the author, presupposing that the poet himself is a modern Korean poetry, studied the influence he had made upon us exclusively to examine ourselves; the self-examining through an object is a start. What we are going to work is not to get his eternal life but to start our own. His works will have a great bearing on the develoment of Korean poetry. His transformation from negation to affirmation will widen the hidden possibility of the future of modern Korean poetry. In this point, the author tried to dig out his life and works.
이종원,최규흠,김영탁 중앙대학교 생산공학연구소 1994 생산공학연구소 논문집 Vol.3 No.2
산업현장에서 대중량물을 빠르고 간편하게 취급하고자 하는 요구가 증가하고 있지만 인간이 취급할 수 있는 물체의 중량은 한계가 있으므로 대중량물의 핸들링 분야는 로봇의 도입이 더욱 필요한 분야이다. 대중량물 취급을 위해 제품화된 로봇이 시판되고 있으나 대부분은 단순히 종래의 직렬링크 형태의 로봇을 대형화한 것으로서 중량비 (로봇자중/가반중량)가 매우 크고 넓은 설치공간을 필요로 한다. 직렬링크 형태의 로봇에서는 선단의 링크와 액튜에이터는 기저부의 부하로 작용하므로 기저부로 갈수록 링크와 액튜에이터의 크기가 기하급수적으로 커지게 되며 강성도 또한 낮다. 이에 반하여 병렬링크형태의 로봇은 직렬링크형태의 로봇에 비해 강성도가 크고 큰 출력을 발휘하기가 용이한 장점을 가지고 있어 대중량물의 고속 핸들링에 적합하다. 그러나 병렬링크 로봇은 그 운동학 방정식이 일반화되어 있지 않고 작업영역이 매우 제한된다는 결점을 가지고 있어 산업에 응용된 사례가 아직 적다. 본 논문에서는 팬터그래프 기구를 응용하여 병렬링크로봇의 단점을 최대한 보완하고 장점을 살린 새로운 로봇기구형태를 제안하고 운동학, 정역학, 작업영역, 특이점해석 등을 통하여, 제안된 기구에 있어 기저부 액튜에이터의 배치에 따른 장단점에 관하여 고찰한다. It is inept and dangerous for human beings to handle a heavy weight body. Therefore, a robot which can easily handle a heavy weight body is required at the industry. Such a robot has to keep high speed, high precision and general functions. Furthermore it is desirable to have a small mounting space and low ratio of weight over payload. In a conventional serial robot, particularly the size of arm and actuator is exponentially becoming heavy near to the base. The Stewart platform mechanism has small working space in spite of having high stiffness and small linkage error. In this study, two types of parallel mechanisms, 5-bar linkage type and pantograph type, are considered and analyzed statically and kinematically. Also workspace and singularities are investigated for two types. It is found that a robot with pantograph type mechanism is more efficient than that with 5-bar linkage type mechanism.
실시간 분산 멀티미디어 응용을 위한 통신 프로토콜의 구조 및 기능
김영탁 嶺南大學校 工業技術硏究所 1995 工業技術硏究所論文集 Vol.23 No.1
For the real-time distributed multimedia applications, additional communication functions, such as real-time, multi-party, multi-connection managements, are required. In this paper we survey the additional functions for real-time distributed multimedia applications, and study the functions of each protocol layer. We also propose an architecture of multimedia communication protocol for real-time distributed multimedia applications on ATM/ISDN.