• Title/Summary/Keyword: Yoon Ik Sun

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The Design of Embedded Vessel Monitoring Toolkit (선박 임베디드 장비 모니터링 도구 설계)

  • Um, Ik-Jung;Park, Yoon-young;Yun, Nam-Sik
    • Proceedings of the Korea Information Processing Society Conference
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    • 2010.04a
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    • pp.41-44
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    • 2010
  • 현대 사회에서 임베디드 시스템은 휴대 가능한 작은 기기에서부터 로봇 및 공정 제어분야에까지 다양한 분야에 적용되어 있으며, 선박 야외 작업장이나 선박 내에서도 임베디드 시스템이 사용되고 있다. 선박 내 네트워크로 연결되어 있는 장비 및 임베디드 시스템들은 다양한 형태의 데이터를 발생시켜 다른 기기와의 정보를 상호 교환함으로써 원활한 운행을 할 수 있게 한다. 본 논문에서는 선박 내 임베디드 시스템에 임베디드 리눅스 커널 기반 추적 도구인 ETTplus 를 접합시켜 각 장치에 대한 분석 및 모니터링과 임베디드 시스템 간의 통신에서 발생되는 각 종 네트워크 관련 정보들을 분석할 수 있는 기능을 추가하여 설계하였다.

A Study on Changing Process of the 'Kyungsung Libraries' in the Japanese colonial era of Korea (일제(日帝) 강점기(强占期) 경성도서관(京城圖書館)의 변천(變遷) 과정(過程)에 관한 고찰(考察))

  • Song, Sung-Seob
    • Journal of Korean Library and Information Science Society
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    • v.51 no.1
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    • pp.71-90
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    • 2020
  • The purpose of this study is to find out changing process of 'Kyungsung Libraries' in the Japanese colonial era by comparing and analyzing through the books and Journals of Korea and Japan. The subject scopes of this study are as follows ; 1) 'Kyungsung Libraries' in Japan Chamber of Commerce and Industry founded by Japanese named, 'San Gu Jung(Yamaguchi Sei)' 2) 'Kyungsung Libraries' founded by 'Yoon Ik Sun' in 'Chiwoonjung' 3) 'Kyungsung Libraries' founded by 'Lee Bum Sung' beside 'Jongno Tapgol Park'. This study studies each three libraries and simultaneously, relationship between mutual relation of these three libraries and other libraries. As a results, the books of San Gu Jung(Yamaguchi Sei)'s library were inherited to those of other two libraries. Also, Despite of eagerly practicing public service of the age, however, independent development of each of two library founded by Koreans was very limited under the influence of Japanese colonial.

인공위성에 대한 광학 관측 연구

  • Lim, Hong-Seo;Yoon, Jae-Hyuk;Seol, Kyung-Hwan;Han, Won-Yong;Moon, Hong-Kyu;Kim, Jeong-Mi;Yoon, Yo-Na;Kim, Sam;Byeon, Yong-Ik;Bae, Young-Ho;Park, Sun-Yeop;Kang, Yong-Woo;Yoo, Seong-Ryeol
    • Bulletin of the Korean Space Science Society
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    • 2004.04a
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    • pp.63-63
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    • 2004
  • 국가지정연구실 사업인 “인공위성 및 지구접근천체 감시연구(NEOPAT)”에서는 2001년부터 2004년까지 인공위성에 대한 광학관측을 추진하였다. 인공위성의 궤도에 관한 자료는 미국 NORAD에서 제공하는 TLE(Two Line Elements)를 이용하였으며, 한국천문연구원에서 개발한 KODAS(KAO Orbit Determination & Data Analysis System) 소프트웨어를 TLE에 사용하여 임의의 시각에서의 위성에 대한 위치 정보를 얻을 수 있었다. (중략)

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Gamma-Ray Burst Observations of YSTAR

  • Park Sun-Yup;Byun Yong-Ik;Kim Dae-Won;Shin Min-Su;Kang Yong-Woo;Han Wonyong;Yim Hong-Suh;Moon Hong-Kyu;Bae Young-Ho;Yoo Seong-Yul;Yoon Jae-Hyuk;Yoon Joh-Na
    • Bulletin of the Korean Space Science Society
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    • 2005.04a
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    • pp.34-34
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    • 2005
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Highly Conductive and Transparent Electrodes for the Application of AM-OLED Display

  • Ryu, Min-Ki;Kopark, Sang-Hee;Hwang, Chi-Sun;Shin, Jae-Heon;Cheong, Woo-Seok;Cho, Doo-Hee;Yang, Shin-Hyuk;Byun, Chun-Won;Lee, Jeong-Ik;Chung, Sung-Mook;Yoon, Sung-Min;Chu, Hye-Yong;Cho, Kyoung-Ik
    • 한국정보디스플레이학회:학술대회논문집
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    • 2008.10a
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    • pp.813-815
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    • 2008
  • We prepared highly transparent and conductive Oxide/Metal/Oxide(OMO) multilayer by sputtering and developed wet etching process of OMO with a clear edge shape for the first time. The transmittance and sheet-resistance of the OMO are about 89% and $3.3\;{\Omega}/sq.$, respectively. We adopted OMO as a gate electrode of transparent TFT (TTFT) array and integrated OLED on top of the TTFT to result in high aperture ratio of bottom emission AM-OLED.

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Oxide/Organic Hybrid TFTs for Flexible Devices

  • Yang, Shin-Hyuk;Cho, Doo-Hee;KoPark, Sang-Hee;Lee, Jeong-Ik;Cheong, Woo-Seok;Yoon, Sung-Min;Ryu, Min-Ki;Byun, Chun-Won;Kwon, Oh-Sang;Cho, Kyoung-Ik;Chu, Hye-Yong;Hwang, Chi-Sun;Ahn, Taek;Choi, Yoo-Jeong;Yi, Mi-Hye;Jang, Jin
    • 한국정보디스플레이학회:학술대회논문집
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    • 2009.10a
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    • pp.393-395
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    • 2009
  • We fabricated oxide and oxide/organic hybrid TFTs on a glass substrate using the photolithography process under $200^{\circ}C$. We adopt the solution processed organic ferroelectric materials of P(VDF-TrFE) and polyimide (KSPI) insulator for 1-T structure memory and flexible device, respectively. All devices have successfully operated and showed the possibility of hybrid TFTs for the application to the flexible electronic devices.

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Scalable Network Architecture for Flow-Based Traffic Control

  • Song, Jong-Tae;Lee, Soon-Seok;Kang, Kug-Chang;Park, No-Ik;Park, Heuk;Yoon, Sung-Hyun;Chun, Kyung-Gyu;Chang, Mi-Young;Joung, Jin-Oo;Kim, Young-Sun
    • ETRI Journal
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    • v.30 no.2
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    • pp.205-215
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    • 2008
  • Many control schemes have been proposed for flow-level traffic control. However, flow-level traffic control is implemented only in limited areas such as traffic monitoring and traffic control at edge nodes. No clear solution for end-to-end architecture has been proposed. Scalability and the lack of a business model are major problems for deploying end-to-end flow-level control architecture. This paper introduces an end-to-end transport architecture and a scalable control mechanism to support the various flow-level QoS requests from applications.

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Heuristic Algorithms for Minimizing Flowtime in the 2-Stage Assembly Flowshop Scheduling (부품 생산과 조립으로 구성된 2단계 조립 일정계획의 Flowtime 최소화 연구)

  • Lee, Ik-Sun;Yoon, Sang-Hum;Ha, Gui-Ryong;Juhn, Jae-Ho
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.33 no.4
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    • pp.45-57
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    • 2010
  • This paper considers a 2-stage assembly flowshop scheduling problem where each job is completed by assembling multiple components. The problem has the objective measure of minimizing total completion time. The problem is shown to be NP-complete in the strong sense. Thus, we derive some solution properties and propose three heuristic algorithms. Also, a mixed-integer programming model is developed and used to generate a lower bound for evaluating the performance of proposed heuristics. Numerical experiments demonstrate that the proposed heuristics are superior over those of previous research.

A Scheduling Problem for Production-Delivery in a Supply Chain (생산 및 배송을 위한 공급사슬망에서의 일정계획에 관한 연구)

  • Yoon, Sang-Hum;Lee, Ik-Sun
    • Journal of the Korean Operations Research and Management Science Society
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    • v.31 no.4
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    • pp.35-47
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    • 2006
  • This paper considers an integrated scheduling problem for consecutive production and delivery stages in a two-stage supply chain. The Production is performed on a single facility and then the finished products are delivered to the customer by capacitated multiple vehicles. The objective of this paper is to obtain job sequencing and delivery batching minimizing the total cost of the associated WIP inventory, finished product inventory and delivery. The inventory cost is characterized by the sum of weighted flowtime. The delivery cost is proportional to the required number of delivery batches. Some polynomial-solvable cases are derived. For the general case, two efficient heuristic algorithms are suggested, and then the heuristics are tested through some numerical experiments.