• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2005.11a
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• pp.488-491
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• 2005

This paper has been proposed an engine oil changing system automatically using artificial intelligence. As you know, It is very difficult to forecast the time that exchange engine oil exactly. Because, It does not necessary to change the engine oil when color of engine is black or distance is more than 3000 km. In order to forecast to optimal engine oil replacement time, We must to consider color of engine oil, greasy, mad condition, quick starting condition and quick braking condition. Therefore, in this paper, to overcome those problems, we, developed an expert system that it can forecast to exchange time of engine oil automatically using fuzzy rules and neural networks.

• Proceedings of the Korean Society of Embryo Transfer Conference
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• 2004.10a
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• pp.97-97
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• 2004

• Journal of the korean Society of Automotive Engineers
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• v.9 no.4
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• pp.77-85
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• 1987

본 논문은 단기통 4사이클 전기점화기관에서 가스교환 과정이 체적효율에 미치는 영향에 대하여 연구한 것이다. 가스교환 과정의 수학적 모델을 설정하고 수치해석을 수행한 결과 체적효율은 가스교환과정과 관련되는 밸브 개폐시기(1,2)보다는 흡배기관의 압력에 의하여 더 큰 영향을 받는 다는 것을 알 수 있었다. 실험에 있어서는 각각 밸브 개폐시기가 다른 3종류의 캠을 사용하였 으며 수치 해석결과와 실험결고가 비교적 잘 일치하였다.

• Journal of the Institute of Electronics Engineers of Korea TE
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• v.42 no.4
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• pp.15-20
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• 2005

If we can forecast the replacement time of engine oil, we extend the life-time of our engine and increase the continued ratio. But, the replacement times of engine oil is influenced by the following elements: the distance that cars or vehicles travel, vehicles that run a short range, types of engine oil etc. that run a long distance. In this paper, We forecast engine oil replacement times by using fuzzy neural network algorithm. This algerian uses the data of distance covered, color of engine oil etc. Through a sequence of simulation, the exchange system of intelligence style engine oil decides on the replacement times of engine oil quite accurately. Therefore, We expect vehicles to become more convenient if the above algorithm is a lied to the present types of cars.

• Korea lubricating oil industries association bulletin
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• no.88
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• pp.8-27
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• 1998

• Defense and Technology
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• no.4 s.230
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• pp.48-55
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• 1998

군용 활성탄은 모든 독성 작용제에 방호가 가능하도록 만들어져 있다. 따라서 각 개인은 어느 상황에서도 살수 있다는 확신을 가지고 규정에 따른 보호장비 착용을 숙달해야겠다. 그리고 지휘관은 충분한 보장력을 가진 보호장비에 대하여 지속적으로 교육시키고 만일의 사태에는 화학장교의 조언에 따라 그 교환시기 등을 적절히 판단하여 부대의 전투력을 보존해야 겠다

• Journal of Korean Biological Nursing Science
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• v.5 no.1
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• pp.45-53
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• 2003

The purpose of this study was to identify the proper changing time of tracheal suction catheter by examining the microorganisms inside after used The samples were the adult and the elderly patients who were in the intensive cane unit of one university hospital in Korea from the early December, 2002 to the end of May 2003. Since the patients needed tracheal suction, sterile catheter including other equipments were used whenever tracheal suction provided, to the experimental group. The sterile catheter with others was provided when the catheter repeatedly used for four hours, to the comparative group. Research was permitted by the head of hospital administration, hospital nursing department; microbiology and intensive care unit. The main results of the study are as follows. 1) The demographic characteristics between the two groups present statistically no difference. 2) Every the experimental group showed various kinds of microorganisms, the numbers of the kinds and carries of the microorganisms were less than those of the comparative group. 3) The mean numbers of the microorganisms between the two groups were significantly different, p < 0.05. This study results strongly emphasize the needs of using sterile catheter whenever a nurse suctions to keep patient's airway open.

• 전기의세계
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• v.55 no.11
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• pp.37-42
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• 2006

• Applied Chemistry for Engineering
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• v.9 no.3
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• pp.435-439
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• 1998

A new series of ion separation membrane materials based on pheonoxy and trifluoroethoxy co-substituted polyphosphazene has been designed and synthesized. The polymers were characterized by $^{31}P$ NMR, FT-IR spectroscopy, elemental analysis, and get permeation chromatography. The basic phosphazene membranes were sulfonated to obtain better hydrophilicity and ion-selectivity. The membrane from $[NP(OC_6H_4SO_3H)_{1.58}(OCH_2CF_3)_{0.42}]_n$ gave excellent values of ion transport number, area resistivity, and also ion exchange capacity, compared with the commercial membranes.

• Proceedings of the Korea Information Processing Society Conference
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• 2000.04a
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• pp.1129-1132
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• 2000

최근의 정보기술 발달로 지리 정보의 이용 영역이 점점 확대되고 있다. 특히 지리정보 시스템은 토지, 도시 및 지역, 시설물 관리, 교통, 환경, 자원, 기상 및 국방정보를 비롯하여 수송 및 배달, 공익사업 등 다양한 분야에 활용도가 풍부하다[1][4]. 본 논문은 가스 잔류량 원격 탐지용 송.수신 제어부와의 인터페이스 기능을 갖는 연결보드와 이 보드를 통해 들어오는 수용가(고객)의 사용검침정보를 GIS(Geography Information System)과 통합하여 통계자료 분석 및 보고서를 발행하고, 사용에 따른 실시간 저장소 위치정보를 실시간으로 모니터링 및 사용자 관리할 수 있는 원격 관제시스템을 개발했다. 현재 가스 공급자들이 겪고있는 어려움 중의 하나는 노동력에 의한 가스 잔류량을 수시로 검침하고 검침량에 따라 수금을 하고 있다. 본 시스템의 개발로서 원격에서 가스 잔류랑 검침 및 가스탱크 교환시기, 고객관리 및 고지서 발행과 GIS를 이용한 재충전 또는 교환할 가스탱크의 위치 및 시기를 쉽게 파악하고 긴급 상황에 따른 조치를 신속하게 취할 수 있다. 그리고 가스저장소 실 시간관제, 저장소의 현황분석을 통한 가스 공급자의 관리업무에 대한 효율성을 도모한다.