• Title, Summary, Keyword: team system

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Field Bus communication design in HVDC System (HVDC 시스템의 프로피버스 통신 디자인)

  • JIANG, LILI;LEE, YILHWA;MOON, JUNMO
    • Proceedings of the KIPE Conference
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    • pp.243-244
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    • 2013
  • This paper introduces the application of Profibus field bus communication in HVDC power system. Discusses about the configuration of HVDC system and the structure of control and protection system. Analyzes and designs the network configuration of field device level. Using OPAS engineering tool to config IO system and at the same time monitor data in SCADA HMI.

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A Study on the Evaluation of Team Effectiveness in University Libraries (대학도서관 팀제의 유효성 평가에 관한 연구)

  • Chung, Jae-Young
    • Journal of Korean Library and Information Science Society
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    • v.38 no.2
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    • pp.399-430
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    • 2007
  • According to the changing of user and service environment, one of countermeasures that introduction of team-based organization is increasing gradually in the university library. This study was conducted to suggest the efficient ways of assessing team effectiveness which is increasing gradually in the university library. The finding indicated that assessment of team effectiveness was shown large differences according to the working level and individual's working duration. In addition, activated communication and capacity of team-based organization were the most effectible factors on the team effectiveness. So that, for maximizing the team effectiveness, this study might be applicable to any strategy which seek to activate communication methods(within - and between team) those are directly effecting on purpose setting, conflict resolution and suggest suitable team-based organization model for University library's characteristic and purpose through improving on the capacity of team system.

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Numerical Simulations of the Supersonic Jet Impingement in a Confined Plenum of Vertical Launching System

  • Lee Kwang-Seop;Lee Jin-Gyu;Hong Seung-Kyu;Ahan Chang-Soo
    • 한국전산유체공학회:학술대회논문집
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    • pp.301-305
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    • 2006
  • The Vertical Launching System design is especially complicated by complex flow structure in a plenum with the severe thermal state and high pressure load form the hot exhaust plume. The flow structures are numerically simulated by using the commercial code, CFD-FASTRAN with the axi-symmetrical Navier-Stokes equations. Two different cases are considered; that is, the stationary fire and the moving fire.

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The Study of Comparison of Cooling System for H2 Discharge Station (수소충전용 직접 및 간접 냉각시스템 비교 평가 연구)

  • LEE, HYENCHAN;YI, JONGYEOL;BAE, CHANHYO;HEO, JEONGHO;JEON, JAEYOUNG
    • Transactions of the Korean hydrogen and new energy society
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    • v.30 no.2
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    • pp.163-169
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    • 2019
  • This study is a research to compare efficiency of new cooling system (chiller, pre-cooler) to that of the conventional system at the hydrogen refueling station (HRS). This study includes contents for thermodynamic comparison of cooling system for HRS and comparison of pros and cons of its components. So It is to establish design concept of cooling system of HRS supplying with fuel cell electric vehicle (FCEV). HRS is charging high pressure H2 (700 bar) to FCEV. However cooling system is need to prevent temperature rise in tank. This cooling system consists of pre-cooler and chiller system.

New Modulation and Detection Method to Reduce Physical Address Reading (광디스크의 물리어드레스 독출에러를 줄이기 위한 변조 및 검출방법)

  • Shim, Jae-Seong;Kim, Ki-Hyun;Park, Hyun-Soo;Park, In-Sik;Seo, Joong-Eon;Shin, Dong-Ho
    • Proceedings of the KIEE Conference
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    • pp.2505-2507
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    • 2001
  • The RF signal is distorted since the cross-talk noise from adjacent tracks and ISI(Inter Symbol Interference) is also incresed as recording density is increased. These cross-talk noise and ISI are main reason of reading error for the embossed pits on the disc. In this study we suggest a new coding method, spaced modulation technique and a detection technique for the spaced modulation. We report the result shows detection performance is improved when we use the suggested spaced modulation code and the detection technique instead of conventional modulation code.

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