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최호현,김선범 대한건축학회 2011 대한건축학회논문집 Vol. No.
The purpose of this study is to verify the hypothesis proposed in preceding research, and to analyze the characteristics by each period. In analyzing of characteristics of the changes in urban spatial structure, the hypothesis of the previously-presented period division was verified through empirical analysis on employment and population-density function, industrial location, and the changes in urban spatial structure according to the urban development project. Through this, the characteristics of the changes in urban spatial structure of Ulsan were closely examined. As a result, the hypothesis in the period division, which was suggested in the above, was indicated to be proper, and the characteristics by each period were shown as follows. ① 1962-1965 : ‘the period in transition’, ② 1966-1972 : ‘the period of urban concentration’, ③ 1973-1977 : ‘the Initial stage of discontinuous concentration (differentiation) according to industrial location’, ④ 1978-1986 : ‘the advanced stage of discontinuous concentration (differentiation) according to industrial location’, ⑤ 1987-1994 : ‘the diffusion period according to urban development’,⑥ 1995-2005 : ‘the Initial stage of multi-nuclei according to concentration and diffusion'
공장자동화에서 Programmable Controller의 현황과 전망
최호현 대한전기학회 1987 전기의 세계 Vol.36 No.7
본고의 내용은 다음과 같다. 1. Programmable Controller의 역사 및 개요 2. 공장 자동화에서 PLC의 역할 3. PLC의 기술 동향 4. PLC의 시장 동향