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김길동(Gil dong Kim),오세찬(Sehchan Oh),이장무(Changmu Lee),이한민(Hanmin Lee),박현준(Hyunjune Park) 대한전기학회 2008 대한전기학회 학술대회 논문집 Vol.2008 No.11
Due to the demand for high-output motors in the limited space between the wheels in an electric train, self-ventilating traction motors have been used for many years. periodical disassembly maintenance is necessary to remove the small Quantities of dust that enter the motor from the open-air ventilation. Reducing this burden, as well as increasing efficiency and reducing noise, would benefit the next generation of motors To address these needs, KRRI is developing a fully enclosed type traction motor, a fully enclosed type traction motor with outer fans, a high-efficiency permanent-magnet synchronous motor and a direct-drive motor(DDM)as traction motors for the next generation of trams.
김길동,정경영,Kim, Gil-Dong,Jeong, Gyeong-Yeong 대한흉부심장혈관외과학회 1994 Journal of Chest Surgery (J Chest Surg) Vol.27 No.4
From 1973 through June 1993, 25 patients underwent pulmonary resection for pulmonary metastases from carcinoma or sarcoma at our institution. There were 11 carcinomas and 14 sarcomas. 24 patients[96% complete] could follow-up and the median follow-up time was 20 months with a range of 4 months to 271 months and total follow-up period was 1105 months-patients. In our patients, actuarial 5-year survival rate was 49%, mean survival time was 66.6$\pm$12.6 months and median survival time was 84 months. Patients with sarcoma, more than 24 months of the tumor-free interval, postoperative adjuvant therapy had a better survival than did those with carcinoma, less than 24 months of the tumor-free interval, no postoperative adjuvant therapy. But there were no statistical differences between two groups[P>0.05]. This results recommend more aggressive surgical treatment for pulmonary metastases.
大田市의 都市高速道路 新設에 관한 硏究 : 主로 儒城路線을 對象으로
金吉東 大田開放大學 1986 論文集 Vol.5 No.-
In this study in order to investigate the tool wear and cutting resistance under fluctuation cutting speed, helix angle, kind of tool meterial, the type of tool edge and cutting method by helical square, Ball end milling. The results are as follows. 1. Flank wear with end mill increased in proportion of cutting speed. 2. Max. min and fluctuation in cutting force are decreased depends upon increasing a helix angle with end mill. And the main force increased in proportion of helix angle. But the width of flank wear are in inverse proportion to helix angle. 3. The tool wear becomes dwindle as the high cutting speed at down milling and low speed at up milling. And the tool l?fe are given with longer at high speed in SKH 10 rather than SKH 56 tool materials. 4. The tool wear are a difference with the type tool edge and becomes bigger as the tool wear the common end mill rather than ball end mill by increasing a cutting length.
金吉東 大田工業專門大學 1983 論文集 Vol.32 No.-
경제기획원 推計에 따르면 1983.1.1 새벽 0시 現在 우러 나라 총인구는 3,964만 1,635명으로 推算하였다. 이것은 每 34秒마다 1명이 出生하고 124.7秒마다 1명이 死亡, 50.4秒당 1연적 늘어나며 1 日 平均 1,715명씩 增加할 경우 83年度의 人口增加率은 1.57%, 國路人口는 1983.8에 4,000만을 돌파할 것으로 展望했다. 여기에서 124.7秒당 1명씩 死亡을 근거로 하면 1933년에 25만2,895명이 死者로 變身한다는 事寶을 默示하고 있다. 모든 人間들은 出生과 동시에 죽음 즉 무덤으로 向한 入生을 營爲하고 있다는 事實은 否認할 수도 없고 避할 수 없는 眞理일 것이다. 이 嚴然한 眞理를 人間들이 단지 忘却하거나 外面하고 있을 뿐이다. 人類가 永遠한 存注라면 墓地의 需要도 無限定일 것이다. 人口의 增設는 必然的으로 墓地의 塘詰을 促進시키딘 이 促進作用은 國土可用面費의 霧食을 招來한다는 現實을 우리는 直視하여야 한다. We are born in human beings, therefore man should be mortal, This paper treats the cemetery which is a place to find peace. But it has many problems awaiting solution . Investing the effective land use and management, 1 project with certainly the counterplan. The results are summarized as follows ; 1. The Reduction Plan of the cemerery Area I propose that Article Ⅱ- Enforcement Ordinance of Burial and Cemetery must be amended below 4㎡. For this amend 1'estricts the cemetery scale . 2. The upper Floors Plan of the Cemetery Structure There are many enlargement and scatter in cemetery area . This present state may result in erosion of the national land . Therefore, 1 map out a Solid cemetery that makes good use of underground and ground. 3. The Constructing of the Island Cemetery It being small in area, I have Plan that we can utilize well adapted islands built cemetery park.