• 제목/요약/키워드: Hwang Yong-Ha

검색결과 681건 처리시간 0.03초

조선 기준일정계획을 위한 재계획 절차의 개발 (A Study on the Development of Rescheduling Procedure for Shipbuilding Master Production Schedule)

  • 박주철;황하룡
    • 산업공학
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    • 제11권3호
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    • pp.129-141
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    • 1998
  • In this paper, a rescheduling procedure is developed for shipbuilding master production schedule. Shipyard initially develops backward production schedules for the entire shipbuilding process, and then refines the schedule by stage. The rescheduling procedure of this paper tries to resolve the schedule discrepancies between the outdoor backward schedule and the refined indoor schedule. Through the proposed rescheduling procedure, outdoor schedule can be successfully adjusted using buffer days and duration reduction. An Object-oriented program is also developed to automate the procedure. We can observe the improvement on productivity and quality of rescheduling works from the application of the developed procedure.

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고양이 농흉 1 증례

  • 조민영;방동하;변예은;정주현;김완희;윤정희;윤화영;최민철;황철용
    • 한국임상수의학회:학술대회논문집
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    • 한국임상수의학회 2006년도 춘계학술대회
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    • pp.138-138
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    • 2006
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WVGA solutions for mobile multimedia convergence

  • Ha, Yong-Min;Hwang, Han-Wook;Kim, Hong-Soo;Jang, Jeong-Woo;Kim, Byeong-Koo
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2008년도 International Meeting on Information Display
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    • pp.13-16
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    • 2008
  • Mobile phones are evolving into a platform for internet access. In order to display web pages in handsets, WVGA and around 3-inch displays are strongly recommended. Low power consumption, compactness and narrow boarder area are essential. The general requirements for WVGA solution and the design factors to reduce the power consumption and boarder area discussed.

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Cox proportional hazard model with L1 penalty

  • Hwang, Chang-Ha;Shim, Joo-Yong
    • Journal of the Korean Data and Information Science Society
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    • 제22권3호
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    • pp.613-618
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    • 2011
  • The proposed method is based on a penalized log partial likelihood of Cox proportional hazard model with L1-penalty. We use the iteratively reweighted least squares procedure to solve L1 penalized log partial likelihood function of Cox proportional hazard model. It provide the ecient computation including variable selection and leads to the generalized cross validation function for the model selection. Experimental results are then presented to indicate the performance of the proposed procedure.

초정밀 스테이지용 능동 진동제어시스템 설계 (Active Vibration Control System Design for Nano-scale Stage)

  • 이주훈;이세한;황돈하;김용주;최영규
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2004년도 하계학술대회 논문집 D
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    • pp.2495-2497
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    • 2004
  • A system, featuring the hybrid isolator for control in the vertical direction, of active microvibration control was proposed. The main components of this system are a stage vibration isolation table with built-in acceleration sensors for detecting microvibration, hybrid isolators and a digital controller with high precision signal converters. The vibration control algorithm is focused on settling-time critical application and feedback/feedforward combination.

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