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ABS 모듈의 접속부 및 전원배선 손상으로 인한 차량화재 사고사례 분석
박남규,김진표,남정우,박종택,송재용,Park, Nam-Kyu,Kim, Jin-Pyo,Nam, Jung-Woo,Park, Jong-Taek,Song, Jae-Yong 한국안전학회 2017 한국안전학회지 Vol.32 No.5
In this paper, study of vehicle fire cases caused by connector and power wiring of anti-lock brake system(ABS) module damage is presented. The purpose of ABS module is to improve braking and steering ability under sudden stop of the vehicle by repeatedly activating and releasing the brake with electric signal via electric control unit. The electric control unit for ABS may experience incomplete contact between power line and signal line or electrical breakdown on the printed circuit board by undergoing repetitive signal change which would consequently result in electrical heat and spark, eventually leading to automotive fire. Therefore, the purpose of this paper is to provide fundamental data by analyzing connector and power wiring of ABS module damage conducive to the precise investigation on the cause of vehicle fire.
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수도(水稻) 품종간(品種間) 도열병(稻熱病) 저항성(抵抗性)의 차이(差異)와 그의 지역변이(地域變異)에 관(關)한 연구(硏究)
박남규,Park, Nam-kyu 충남대학교 농업과학연구소 1977 Korean Journal of Agricultural Science Vol.4 No.2
본(本) 시험(試驗)은 우리나라의 각지방(各地方)에서 밭못자리 검정(檢定)에 의(依)한 수도(水稻) 품종(品種)의 도열병(稻熱病) 발생(發生) 양상(樣相)을 비교(比較) 검토(檢討)하여 저항성(抵抗性) 품종육성(品種育成)을 위(爲)한 기초(基礎) 자료(資料)를 얻고자 도열병(稻熱病) 판별품종(判別品種) 및 주요품종(主要品種) 129개(個)와 잡종계통(雜種系統) 30조합(組合)을 수원등(水原等) 6개(個) 지역(地域)에서 1976~'77년(年)에 걸쳐 실시(實施)한 바 그 결과(結果)를 요약(要約)하면 다음과 같다. 1. 3종(種)의 도열병(稻熱病) 판별품종(判別品種) Set를 사용(使用)하여 6개(個) 지역(地域)의 우점(優占) race의 차이(差異)를 조사(調査)한 결과(結果) 지역간(地域間) 우점(優占) race의 차이(差異)는 인정(認定)되었으나 정확(正確)한 지대(地帶) 구분(區分)은 할 수 없었다. 2. 일본형(日本型) 품종(品種)과 Indica${\times}$Japonica육성품종(育成品種)은 저항성반응(抵抗性反應)의 지역간(地域間) 차이(差異)가 서로 다르게 나타났다. 3. 수원(水原)과 임실(任實)에서 잡종계통(雜種系統)들의 도열병(稻熱病) 저항성반응(抵抗性反應)도 서로 달랐다. 4. 도열병(稻熱病) 밭못자리 검정(檢定)에서 조사(調査) 시기별(時期別) 저항성반응(抵抗性反應)의 진전(進展)에 의(依)하여 3종(種)의 품종군(品種群)으로 분류(分類)할 수 있었다. 5. 엽도열병(葉稻熱病)에 고도(高度)의 저항성(抵抗性) 반응(反應)을 보인 품종(品種)은 일반적(一般的)으로 수수도열병(穗首稻熱病)이 거의 발생(發生)하지 않았으나 예외(例外)도 있었다. These studies were conducted to obtain basic information of the rice blast resistance in comparision with blast occurrence patterns in the blast nursery test in Korea. One hupdred and twenty nine rice varieties including several blast differential varieties and 30 combinations of pedigree lines were tested at six different locations, Suweon, Chulweon, Chuncheon, Iri, Jinan, Imsil, and Milyang, in 1976~1977. The results obtained are summarized as follows: 1. When blast resistance was tested using three sets of differential varieties at six locations, prevalent races were different depending on the location and differential variety set tested. 2. There were regional differences in blast disease reation among Japonica rice varieties and among Indica${\times}$Japonica crosses. 3. At Suweon blast disease reactions of pedigree lines were different from that at Imsil. 4. Three varietal groups were made depending on the develpment of rice blast in the nursery test. 5. In general, highly resistant varieties to rice leaf blast were also resistant to neck blast, but there were exceptions.
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하이브리드 병렬 프로그램을 이용한 타키온 슈퍼컴퓨터의 성능
박남규,정윤수,이홍석,Park, Nam-Kyu,Jeong, Yoon-Su,Yi, Hong-Suk 한국정보통신학회 2010 한국정보통신학회논문지 Vol.14 No.1
최근에 도입되어 운영되고 있는 타키온 1차 시스템은 쿼드코어 AMD 바로셀로나 노드로 구성된 고성능 슈퍼컴퓨터이다. 본 논문에서는 하이브리드 병렬화 기법을 도입한 프로그램 중 하나로 사용되고 있는 멀티존(Multi-zone) NAS 병렬 벤치마크(NPB)를 이용하여 타키온 성능 및 병렬 확장성을 검증하고자 한다. 하이브리드 병렬 성능 시험을 위하여 NPB-3.3 버전 BT-MZ의 B 및 C클래스를 사용하였으며, 실제로 타키온 시스템의 1024개의 프로세스까지 병렬 확장성을 테스트를 하였다. 프로세서 1024개 이상 이용한 하이브리드 병렬컴퓨팅 계산 결과는 국내 최초이다. 이러한 하이브리드 병렬화 기법은 타키온처럼 멀티코어 기술을 적용한 고성능 컴퓨팅 시스템에서 매우 효율적이고 유용한 병렬 성능 벤치마크가 될 수 있음을 기술하였다. Tachyon primary system which introduces recently is a high performance supercomputer that composed with AMD Barcelona nodes. In this paper, we will verify the performance and parallel scalability of TachyonIn by using multi-zone NAS Parallel Benchmark(NPB) which is one of a program with hybrid parallel method. To test performance of hybrid parallel execution, B and C classes of BT-MZ in NPB version 3.3 were used. And the parallel scalability test has finished with Tachyon's 1024 processes. It is the first time in Korea to get a result of hybrid parallel computing calculation using more than 1024 processes. Hybrid parallel method in high performance computing system with multi-core technology like Tachyon describes that it can be very efficient and useful parallel performance benchmarks.
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Port Information System For Port Authority
박남규,최형림,이창섭,강무홍,Park Nam-Kyu,Choi Hyung-Rim,Lee Chang-Sup,Kang Moo-Hong The Korea Institute of Information and Commucation 2005 한국정보통신학회논문지 Vol.9 No.8
항만정보시스템의 기능과 항만유형과는 관련성이 있는 것일까? 본 연구에서는 선진항만들의 유형과 정보시스템 기능 분석을 통하여 관련성을 규명하고자 하였다. 항만들은 자산의 소유와 운영의 주체에 따라 국유제, 공영자치제, 지방자치제(지방정부자치제) 및 사유제의 4가지로 유형으로 구분된다. 유형에 따른 항만들의 주요활동도 달라진다. 국유제와 지방자치제의 경우는 행정처리 기능에 중점을 두고 있는 반면, 공영자치제와 사유제는 고객서비스 강화에 중점을 두고 있다. 항만의 유형과 정보시스템과의 상관관계를 조사한 결과 국유제, 지방자치제 항만에는 업무처리 중심의 시스템이 발달하여 있으며, 사유제 및 공영자치제 항만에는 고객서비스를 최우선으로 하는 커뮤니티 시스템과 e-Business 시스템이 발달되어 있었다. 항만유형별 정보시스템의 차이는 부산항만정보시스템의 개선에 시사점을 던져주고 있다. 그동안 국유제 항만으로서 운영되던 부산항이 공영자치제 유형의 운영방식으로 변경됨에 따라 항만정보시스템도 추세에 따라 개선되어야 한다. 본 연구에서 제안하는 방법으로 3단계 방법을 제안하였다. 제 1단계가 미러링(Mirroring) 단계로서 항만운영을 안정화시키는 단계이며, 제 2단계에서는 커뮤니티 시스템을 구축하여 고객의 서비스를 제고시키는 협업화 단계로 설정하였으며, 제 3단계는 부가가치창출을 위한 수익형 시스템을 개발하는 e-Business 개발단계로 설정하였다. Is there my relationship between a port information system and a port type? This paper aims to define its relationship through a study on the port types of advanced countries and their information systems. In terms of port ownership and its governing body, the port type can be divided into 4 types: state-run, public corporation, local government-run, and private ownership. According to the port type, the major activities of ports are different. In the case of a state-run and local government-run port, they put emphasis on the function of administration, but a public corporation and private ownership stress the importance of customer services. The study results of the mutual relationship of a port type and an information system show that the state-run and local government-run ports have a good administration-oriented system, and public corporation and privatized ports have an excellent customer-oriented community system and e-business system. The differences in the information system by port type provide an important suggestion to the improvement of information system of Busan Port Authority. As Busan port has been transformed from a state-run type to a public corporation, a new port information system has to be followed. Accordingly, this study has suggested a three-stage development plan: The first is a mirroring stage of stabilizing the port management, the second is a cooperation stage of enhancing customer services through the establishment of a community system, and the third is an e-business stage of developing a profit system in order to create value added.
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Cu, Zn, Sn의 스퍼터링 적층방법과 황화 열처리공정이 Cu<sub>2</sub>ZnSnS<sub>4</sub> 태양전지재료 특성에 미치는 효과
박남규,비나야쿠마,김의태,Park, Nam-Kyu,Arepalli, Vinaya Kumar,Kim, Eui-Tae 한국재료학회 2013 한국재료학회지 Vol.23 No.6
The effect of a sputter deposition sequence of Cu, Zn, and Sn metal layers on the properties of $Cu_2ZnSnS_4$ (CZTS) was systematically studied for solar cell applications. The set of Cu/Sn/Zn/Cu multi metal films was deposited on a Mo/$SiO_2$/Si wafer using dc sputtering. CZTS films were prepared through a sulfurization process of the Cu/Sn/Zn/Cu metal layers at $500^{\circ}C$ in a $H_2S$ gas environment. $H_2S$ (0.1%) gas of 200 standard cubic centimeters per minute was supplied in the cold-wall sulfurization reactor. The metal film prepared by one-cycle deposition of Cu(360 nm)/Sn(400 nm)/Zn(400 nm)/Cu(440 nm) had a relatively rough surface due to a well-developed columnar structure growth. A dense and smooth metal surface was achieved for two- or three-cycle deposition of Cu/Sn/Zn/Cu, in which each metal layer thickness was decreased to 200 nm. Moreover, the three-cycle deposition sample showed the best CZTS kesterite structures after 5 hr sulfurization treatment. The two- and three-cycle Cu/Sn/Zn/Cu samples showed high-efficient photoluminescence (PL) spectra after a 3 hr sulfurization treatment, wheres the one-cycle sample yielded poor PL efficiency. The PL spectra of the three-cycle sample showed a broad peak in the range of 700-1000 nm, peaked at 870 nm (1.425 eV). This result is in good agreement with the reported bandgap energy of CZTS.
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사례 분석을 통한 김치냉장고의 화재 위험성에 관한 연구
박남규,지홍근,송재용,Park, Nam Kyu,Ji, Hong Keun,Song, Jae Yong 한국안전학회 2020 한국안전학회지 Vol.35 No.2
In this paper, we describe fire risk of Kimchi refrigerator. The Kimchi refrigerator has been widely spread and used starting from the first half of 2000 and recently fire accidents caused by the Kimchi refrigerator emerged as social concern. In particular, in products of a specific manufacturer, it is not an environmental factor, but a characteristic that the fire is caused due to a defect of the product itself is shown. These features are judged to be formed by unique defects regardless of external factor by forming electrically arc mark in the relay element. In this paper, we analyzed the cause of the fire occurring in the Kimchi refrigerator and finally confirmed the characteristic that the fire occurred mainly in the relay element due to insufficient capacity of the relay element. Therefore, when a fire occurs in a product of the same maker as the Kimchi refrigerator mentioned in this paper, it is always judged that the inspection of the relay element should be carried out.
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박남규,신동수,Park, Nam-Kyu,Shin, D.S. 대한산업공학회 1997 산업공학 Vol.10 No.3
Document management system is a tool, based on the document life cycle concept, for structured management of various documents within an organization. In this paper, we address a development process of document management system based on SGML. We have developed a document management system which can support a variety of types in documents such as informal data, HTML, CGI and so on. Using the developed system, users can access documents in the system through an internet browser, and also add or modify existing documents.
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