• Title/Summary/Keyword: Line Efficiency

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Dongwha Creative Renovation (동화 목재 리노베이션)

  • Kim, Kai-Chun
    • Proceedings of the Korean Institute of Interior Design Conference
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    • 2005.10a
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    • pp.201-204
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    • 2005
  • In this building, we never use the existing construction methods such as disassembly, destruction and newly construction to ensure the eco-friendly building and to decrease of waste disposal. We make customers feel newly by using minimum materials, pursuing the 'Best Design Using Lower Material' slogan and remodeling the building partially. The line is the most informal type one which is lack of intention. This line formation is harmonized with self-efficiency and completeness that are not required for unnecessary things, and simple unification which has not alternatives or obstacles.

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Real-time line control system for automated robotic assembly line for multi-PCB models

  • Park, Jong-Oh;Hyun, Kwang-Ik;Um, Doo-Gan;Kim, Byoung-Doo;Cho, Sung-Jong;Park, In-Gyu;Kim, Young-Sik
    • 제어로봇시스템학회:학술대회논문집
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    • 1991.10b
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    • pp.1915-1919
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    • 1991
  • The efficiency of automated assembly line is increased by realizing the automation of each assembly cell, monitoring the line information and developing the real-time line control system it. which production flow is controllable. In this paper, the several modules which are important factors when constructing automated real-time control system, such as, line control S/W module, real-time model change module, error handling module and line production management S/W module, are developed. For developing these important programming modules, real-time control and multi-tasking techniques are integrated. In this paper, operating method of real-time line control in PCB automated assembly line is proposed and for effective control of production line by using multi-tasking technique, proper operating method for relating real-time line control with multi-tasking is proposed by defining the levels of signals and tasks. CIM-Oriented modular programming method considering expandability and flexibility will be added for further research in the future.

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A Study on the Integrated System and Sensitivity Analysis for Line Capacity Calculation Model (선로용량 계산 모델의 통합과 통합 민감도 분석 체계에 관한 연구)

  • Kim, Mu-Ryong;Kim, Han-Sin;Lee, Chang-Ho;Kim, Bong-Seon;Kim, Dong-Hui;Hong, Sun-Heum
    • Proceedings of the Safety Management and Science Conference
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    • 2005.11a
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    • pp.30-39
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    • 2005
  • Line capacity calculation has been used to determine optimum efficiency and safe train service for train scheduling plan and investment priority order throughout detecting bottleneck section. Because of some problems of Yamagisi and UIC methods for line capacity calculation, developing of the method of line capacity calculation and evaluation for the Korea circumstance is important. This paper deals with the integrated system of TPS(Train Performance Simulator), PES(Parameter Evaluation Simulator), LCS (Line Capacity Simulator) and sensitivity analysis for line capacity calculation model.

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A Design for Dynamic Line Rating System to increase Overhead Transmission Line Capacities (가공송전선의 송전용량을 증가시키기 위한 동적송전용량 시스템의 설계)

  • Kim, Sung-Duck
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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    • v.25 no.7
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    • pp.72-77
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    • 2011
  • Dynamic Line Rating (DLR) techniques have been greatly worthy of notice for efficiently increasing transmission capacity as well as controlling load-flow in overhead transmission lines, in comparison with the existing power system operating with Static Line Rating (SLR). This paper describes an utilization method to implement DLR control system for old transmission lines built in the first stage using the ground clearance design standard with lower dips. The suggested DLR system is focused on designing as temperature control system rather than current/load control system. Based on several performance for conductor temperatures, it is shown that DLR system with efficiency can be implemented.

Analysis of Line Capacity for the Special Structure in Railway (특이구조를 갖는 선로구간의 용량분석에 관한 연구)

  • Kim Dong-Hee;Hong Soon-Heum
    • Proceedings of the Korean Operations and Management Science Society Conference
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    • 2003.05a
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    • pp.668-673
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    • 2003
  • Line Capacity is a criteria for transport capacity and is used to evaluate railroad investment alternatives or to decide train frequency when establish transportation plan. There are two methodologies to increase transport capacity of railway. One is to invest railroad equipment or vehicles, and the other is to improve operation efficiency through optimization. Such all efforts are intended to increase transport capacity by improving line capacity. So far, this criteria is calculated statical and experimental numerical formula. But, line capacity has special attribute that changes dynamically according to operational conditions, so there is a need of new line capacity estimation system. In this paper, we present a new estimation method of line capacity based on the probability simulation, and apply to normal railline section and special structured railine section.

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A study on the exhaust noise reduction of automobile with the active muffler (엑티브 머플러를 이용한 실차 배기 소음 저감에 관한 연구)

  • Hong, Jin-Seok;Shin, Jun;Kim, Heung-Sub;Song, Jin-Ho;Oh, Jae-Eung
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1996.11a
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    • pp.283-287
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    • 1996
  • The exhaust noise reduction of automobile with the active muffler is experimentally investigated. The control algorithm is the filtered-x LMS algorithm and the inverse algorithm with the adaptive line enhancer. Also, the control efficiency is increased with synthesized second harmonic engine frequency. In the experiment, the active muffler is applied to the end of exhaust system in automobile and the control with on-line secondary path modeling method(inverse algorithm) is compared the control of off-line secondary path modeling method. As secondary path transfer functions are changed, the experimental results show that the control performance with on-line method is more efficient than that with off-line method in the exhaust noise reduction of automobile.

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A Study on the 60 GHz Band Radial Line Slot Array Antenna Fed by a Rectangular Waveguide (60 GHz 대역용 도파관 급전 Radial Line Slot Array 안테나에 관한 연구)

  • 김용훈;채희덕;이중원;박종국;김성철;김성철
    • The Journal of Korean Institute of Electromagnetic Engineering and Science
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    • v.13 no.3
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    • pp.257-262
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    • 2002
  • A single-layered radial line slot array (SL-RLSA) antenna etched on a substrate and fad by a rectangular waveguide is presented in the 60 ㎓ band. The design curves are obtained by an efficient electromagnetic coupling analysis using Ewald Sum technique and Shanks transformation. The antenna has rectangular waveguide feed structure using a rectangular waveguide-to-radial line transition. The prototype antenna of 10 cm-diameter was tested and the gain of 31 ㏈i and the efficiency of 38% were measured at 60 ㎓.

A Study on the Reliability Improvement of the Integrated System and Sensitivity Analysis for Line Capacity (선로용량 산정과 민감도 분석의 신뢰성 향상에 관한 연구)

  • Kim Moo-Ryong;Kim Han-Xin;Lee Chang-Ho;Kim Bong-Sun;Kim Dong-Hee;Hong Soon-Hum
    • Journal of the Korea Safety Management & Science
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    • v.7 no.4
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    • pp.207-217
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    • 2005
  • Line capacity calculation has been used to determine optimum efficiency and safe train service for train scheduling plan and investment priority order throughout detecting bottleneck section. Because of some problems of Yamagisi and UIC methods for line capacity calculation, developing of the method of line capacity caculation and evaluation for the Korea circumstance is important. This paper deals with the reliability improvement on the integrated system of TPS(Train Performance Simulator), PES(Parameter Evaluation Simulator), LCS(Line Capacity Simulator) and simulation and sensitivity analysis for line capacity.

Line Capacity Estimation in Railways (철도에서의 선로용량 산정에 관한 연구)

  • 김동희;김봉선
    • Proceedings of the Safety Management and Science Conference
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    • 2002.05a
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    • pp.257-262
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    • 2002
  • There are two methodologies to increase transport capacity of railway. The one is to invest railroad equipment or vehicles, and the other is to improve operation efficiency through optimization. All of these is intended to increase transport capacity by improving line capacity So far, we treat line capacity as the criteria for evaluating investment alternatives or for restricting tram frequencies, and this criteria is calculated statical and experimental numerical formula. But, line capacity has special attribute that change dynamically according to operational condition, so there is a need of new line capacity estimation system. The Purpose of this paper is to present a new line capacity estimation system based on the probability simulation and its applications.

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A Study on the Capacity Analysis for improving Railway Systems (철도시스템 개선을 위한 용량분석에 관한 연구)

  • Kim Dong-Hee;Kim Seong-Ho
    • Proceedings of the KSR Conference
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    • 2003.05a
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    • pp.272-279
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    • 2003
  • There are two methodologies to increase transport capacity of railway. One is to invest railroad equipment or vehicles, and the other is to improve operation efficiency through optimization. All of these is intended to increase transport capacity by improving the line capacity, So far, we treat the line capacity as the criteria for evaluating investment alternatives or for restricting train frequencies, and this criteria is calculated statical and experimental numerical formula. But, line capacity has special attribute that changes dynamically according to operational conditions, so there is a need of new line capacity estimation system. Korea Railroad Research Institute(KRRI) proposed a new line capacity estimation system based on the probability simulation method. In this research. we perform analysis of line capacity for the railway improvement alternatives, and to represent the results.

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