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金建會,鄭光兌,金姬淑,安斗洪 慶北大學校 醫科大學 1977 慶北醫大誌 Vol.18 No.2
1964年 1月부터 1976年 12月까지 13年間 本小兒科에 入院한 186例의 結核性 患兒를 對象으로 臨床的 觀察한 바 다음과 같은 成績을 얻었다. 年度別 患者數는 큰 差異를 볼 수 없었다. 年令別 患者數는 1∼4才에서 가장 많았고(53.2%) 6才 未滿에서 76.6% 發生 되었으며 男女比率은 1.7:1이었다. 季節別 患兒 發生數는 夏季에 많았고 月別로는 4月에 가장 많았다. 結核患者와 접촉한 病歷을 認定하라 수 있었던 例가 36.6% 였으며 거의 家族中에서 그 感染源을 찾아 볼 수 있었고 그中에서도 父母가 大多數였다. 本病院에 入院하기前 結核性 腦膜炎으로 診斷받은 例는 불과 13.4%였고 大多數가 上氣道感染, 流行性感氣等으로 診斷받은 例들이었다. 入院時 主된 臨床症狀으로서는 嘔吐와 發熱이 가장 많았다. 腦膜外 部位 結核은 X-線所見上 肺에 異常所見을 볼 수 없었던 경우가 50.5%였으며 栗粒性結核은 16.1%에서 볼 수 있었다. 入院期間中 病勢가 好轉된 例는 50.5%이었다. 後遺症으로서는 癎疾發作 7例, 半身痲痺 5例, 性格異常이 2例등이었으며 發病後 來院期間이 길수록 그 豫後도 좋지 않았다. Clinical observation was made on 186 children with tuberculous meningitis who were admitted to our pediatric department during the past 13 years from 1964 to 1976. The following result have been obtained: The case numbers were highest during summer months and no difference of yearly distribution was seen. The highest attack rate was noticed in the age group of 1 to 4,and 3/4(74.5%) were under the age of 6. In one third of the cases (36.6%) contact with a known tuberculous sources could be found, especially among the family numbers, and parental sources constituted two third. Vomiting and fever were the most common presenting symptoms at the time of admission. Ascociated tuberculous lesions were seen in half of the cases, with miliary tuberculous lesion on chest x-ray in 16.1%. With antituberculous therapy including steroid, faverable clinical response was obtained in 94 cases (50.5%) during hospitalization and 35 case (18.8%) died. Out of the 18 cases with neurological sequelae, seizure was seen in 7, hemiplegia in 5 and personality disorder in 2.
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김건회 한국공작기계학회 2002 한국생산제조학회지 Vol.11 No.6
Resently, reduction of industrial products in size and weight has increased by the application of micro-drill for gadgets of high precision and gave rise to a great interest in a micro-drilling. Due to the lack of tool stiffness and the chip packing, micro-drilling requires not only the robust tool structure which has not affected by the vibration, but also the effective drilling methods designed to prevent tool fracture from cutting troubles. Firstly, this paper presents a optimum characteristic evaluation method of 0.15mm microdrill in consideration of new manufacturing processes for improving the product rate and extend the tool life, and secondly suggests between microdrilling characteristic properties of tool and evaluation of workpiece quality through experiment.
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생산성을 중시한 초경합금 소재 마이크로 드릴의 최적 형상설계
김건회 한국공작기계학회 2004 한국생산제조학회지 Vol.13 No.3
Recently reduction of industrial products in size and weight has been increased by application of micro-drills in gadgets of high precision and a great interest of a micro-drilling has been raised. Due to the lack of tool stiffness and the chip packing the micro-drilling requires not only the robust tool structure which has not affected by vibration but also effective drilling methods designed to prevent tool fixture h m cutting troubles. This paper p e n & an optimum design shape of a 0.15 mm micro-drill associated with a new manufacturing process to improve the production rate and to lengthen the tool life and suggestions on the micro-drilling characteristic properties associated with the tool life and workpiece quality.
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김건회 한국공작기계학회 1998 한국생산제조학회지 Vol.7 No.5
In order to utilize the information of well-known grinding database or grinding machine characteristics, a database needs to be designed by considering the delicate property of the machine tools for the high precision and quality of the demanding specification. Among the machine tools, machining conditions of the grinding are various and knowledge repeatance obtained from the grinding process are less credable. Therefore it is desirable for database, which is used to set the grinding conditions, to utilize the maximum machine tool capability. The present paper studied on the occurance limit of chatter vibration and burn considering the characteristics of machine tool. And also basic experiments were performed to establish the optimum grinding conditions which could maximize the grinding efficiency.
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김건회(Gun-Hoi Kim),최승훈(Seung-Hun Choi),서정덕(Jung-Duck So) 한국기계가공학회 2007 한국기계가공학회 춘추계학술대회 논문집 Vol.2007 No.-
In developing new generation vehicles, the fuel cell hybrid vehicle has become more important as environmental standards become more stringent. This paper details the Fuel Cell Hybrid Radio Control Car (FCHRC) with proton exchange membrane fuel cell stack(75×55×65㎜, 6V, 5A) and a secondary battery(7.4V, 2A) charged up by a solar cell(61㎜ x 110㎜, 1.7V, 450㎃). The design work of the FCHRC was made progress by CATIA modeling & assembling before manufacturing it. In this paper, we will focus on the automatic conversion of a power source between the PEMFC and the secondary battery, and finding the optimum conditions (temperature, humidity, airflow rate and hydrogen pressure) through thousands of performance tests in the humidity-temperature program controller. Included are diagrams of the dynamo, fitting the model for the performance test, that we constructed specifically for this research, to turn out the hybrid control system having the efficiently automatic conversion in the different modes (accelerated motion, uniformly accelerated motion, steeply accelerated motion, decelerated motion). The purpose is that the models and data from the experiments we conducted will contribute to the ongoing development of the fuel cell hybrid car.
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김건회,정윤교 國立 昌原大學校 産業技術硏究所 1996 産技硏論文集 Vol.10 No.-
연삭 숫돌선택은 공작물제거량, 숫돌의 소모량, 표면정도 및 공작물의 물리적·화학적 특성을 고려하여 설정하는 것을 기본으로 한다. 그러나, 연삭가공은 구성인자 상호관계가 복잡하여 이중에서 어느 한 요소만 고려하여 설정하기 어렵고 정량적 기준 또한 정해져있지 않아 현실적으로는 숙련자의 정성적이고 경험적 지식에 따른 주관적 척도에 의존하는 것이 대부분이다. 본 연구에서는 연삭숫돌 선택에 있어서 작업조건중에서 대량생산을 제외하고는 되도록이면 현장에 구비되어 있는 작업가능한 연삭숫돌선택을 선택하여 효율성을 도모하는 동시에 현장에 연삭숫돌이 구비되지 않은 경우도 고려하여 연삭숫돌 설정에 우선순위를 주어, 작업자에 연삭숫돌 선택의 유연성을 부여하였다. 또한, 실용성 있는 전문가 시스템의 구축을 위해 정성적이고 경험적인 지식의 활용을 위한 지식표현으로 설문조사에서 얻은 데이타를 x²-分布에 따른 추정신뢰구간을 구해, 이를 토대로한 비대칭 삼각퍼지함수의 결정법을 제시하고, 이를 이용해서 구축한 시스템의 실행결과의 타당성을 비교하였다.
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