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Next Generation Rotorcraft Technologies in USA and Europe (미국과 유럽의 차세대 회전익 기술 개발 현황)

  • Oh, Sejong;Kim, Sung Hwan
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.42 no.8
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    • pp.713-721
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    • 2014
  • In Europe and USA, new programs called GRC(Green Rotorcraft) and SRW (Subsonic Rotary Wing program) respectively, have been currently underway for developing the next generation rotorcraft. The final goal is to develope fuel-efficient/environmental-friendly tilt-rotor civilian rotorcraft, which can partly replace short-range regional aircrafts. Also for safe operation, the new rotorcraft technology is cooperated with the new air transport management(ATM) system, called SESAR(Single European Sky ATM Research) and NextGen(Next Generation Air Transport System) in Europe and USA. In addition to achieve the final goal, the tilt-rotor aircraft, they are trying to improve the performance of conventional helicopters by adopting more efficient propulsion system, active rotor system, and reducing internal and external noise. Especially in GRC program of Europe, the environmental factors such as noise, fuel efficiency, reduction of emission gas(CO2, NOx), are focused for the new technologies.

Analysis for Management System of Next Digital Map (차세대수치지도 관리시스템 분석)

  • Heo, Min;Park, Joung-Hyun;Lee, Jae-Ho;Ryu, Keun-Hong
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2010.04a
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    • pp.381-382
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    • 2010
  • The management system of next digital map will contributes the systematic management for large dataset and huge data. To develop the management system, the requirements are analyzed and applied through the analysis of characteristics of middleware management, editor and component.

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Next Generation Manufacturing(NGM) (1) (차세대 제조 시스템(1))

  • 김선호;이후상
    • Journal of the Korean Society for Precision Engineering
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    • v.17 no.1
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    • pp.11-20
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    • 2000
  • 본 글은 1999년 5월 CASA/SME Blue Book에 Jim Jordan 그리고 Fred Michel이 “Next Generation Manufacturing”라는 제목으로 게재한 자료를 편자의 의도에 따라 재편집한 것입니다. CASA(Computer and Automated Systems Association)는 SME(Society of Manufacturing Engineers)에서 활동하고 있는 하나의 분과로서 CIM Enterprise Wheel을 만들어 내 유명한 곳이기도 합니다. 저자는 본 글에서 앞으로 10여년 간 펼쳐질 차세대 제조 시스템에서는 지식경영이 가장 중요한 요소라고 정의하고 있습니다. 그리고 차세대 제조 시스템의 운영전략으로는 기업통합, 인간자원의 지적이용, 지식의 개발 및 유지, NGM 프로세스 장비 및 기술의 채용을 들고 있습니다.

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DESIGNING GEAR IOLS FOR THE 21st CENTURY

  • Hong, H.S.
    • Proceedings of the Korean Society of Tribologists and Lubrication Engineers Conference
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    • 1997.10a
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    • pp.3-42
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    • 1997
  • A Development of Next Generation Gear Oils Is Very Complicated. Balancing Component Durability And Other Requirements (Fuel Economy, Etc.)Are Critical For A Successful Development Of The Next Generation Gear Oils.

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Proposed Neural Network Approach for Monitoring Plant Status in Korean Next Generation Reactors

  • Varde, P.V.;Hur, Seop;Lee, D.Y.;Moon, B.S.;Han, J.B.
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • v.3 no.1
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    • pp.112-120
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    • 2003
  • This paper reports the development work carried out in respect of a proposed application of Neural Network approach for the Korean Next generation Reactor (KNGR) now referred as APR-1400. The emphasis is on establishing the methodology and the approach to be adopted towards realizing this application in the next generation reactors. Keeping in view the advantages and limitation of Artificial Neural Network Approach, the role of ANN has been limited to plant status or to be more precise plant transient monitoring. The simulation work carried out so far and the results obtained shows that artificial neural network approach caters to the requirements of plant status monitoring and qualifies to be incorporated as a part of proposed operator support systems of the referenced nuclear power plant.

Automatic Block-Type Assembly Structure Construction and Editing System (블록형 구조물 자동 생성 및 구축 시스템 개발)

  • Kim, Jae Woo;Kang, Kyung-Kyu;Lee, Man Hee;Lee, Jongwook;Lee, JiHyung
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2016.01a
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    • pp.219-222
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    • 2016
  • 블록형 구조물의 구축은 완구의 목적으로 널리 사용되고 있으며 이외에도 제품 디자인을 위한 래피드 프로토타이핑 및 창의학습을 위한 도구로도 활용되고 있다. 본 논문은 블록형 구조물을 적은 비용으로 손쉽게 설계하고 구축하기 위하여 블록형 구조물 자동 생성 기능 및 편집 기능을 제공하는 소프트웨어 시스템을 개발하였다. 본 시스템을 이용하여 가상공간에서 자유롭게 블록형 구조물을 생성 및 편집할 수 있고, 실제 구조물의 조립을 위한 매뉴얼로 활용할 수 있다.

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Reducing Noise Source Harmonics of the Next-Generation High-Speed Railway Inverter System Using Hybrid RPWM Technique (Hybrid RPWM을 적용한 IPMSM 기반 차세대 고속전철 인버터 구동 시스템의 소음원 고조파 저감)

  • Lee, Sang-Hyun;Jin, Kang-Hwan;Kim, Sung-Je;Park, Young-Ho;Kim, Yoon-Ho
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.61 no.7
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    • pp.1061-1068
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    • 2012
  • In this paper, The Next Generation High Speed Railway inverter system using Hybrid Random Pulse Width Modulation (Hybrid RPWM) is proposed to reduce electromagnetic noise. To verify the validity of study, simulation results of the Next Generation High Speed Railway Inverter system using the proposed method was compared with the system using conventional method. A simulation program is developed using Matlab/Simulink. The results show that the voltage and current harmonics of the Next Generation High Speed Railway Inverter system using Hybrid RPWM significantly decrease and spread into wide band area.

A literature study on the treatments of the Decubitus ulcer (褥瘡의 治療에 關한 文獻的 考察)

  • Kim, Hong-jin;Choi, Jung-hwa
    • The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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    • v.12 no.2
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    • pp.104-121
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    • 1999
  • The results were as follows ; 1. The treatment method is most used reinforcing the spleen and strengthening of Ki(氣) detoxication and draining of pus on each stage. In first stage, the method of actirating blood and aeration of Lag(絡) nourishing blood and moisturizing skin is used. In ulcer stage, the method of expelling blood stasis and detoxication, promoting pus and drainage is used. In chronic stage, strengthening of Ki(氣) and blood, invigiration and dispersion is used. 2. In the frequency of prescription, the most numerous prescription is Paljintang(八珍湯) and the next are Insamyangyoungtang(人蔘養榮湯). Taglisodongum(托裏消耗飮) ect. In the frequency of medicine the most numerous medicine is Angelicae Gigantis Radix(當歸) and the next are Glycyrrhizae Radix (甘草), Astragali Radix(황기) etc. 3. In the frequency of prescription of exteral therapy. the most numerous prescription is Saengioghongo(生肌玉紅膏), Saengisan(生肌散) and the next are hongsungdan(紅升丹), guildan(九一丹) etc. In the frequency of medicine of exteral therapy, the most numerous medicine is Glycyrrhizae Radix (甘草) and the next are Calomelas(輕粉), Draconis Resina(血竭) etc.

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