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$SF_6$ Gas Insulation for next Generation GIS

  • Endo, Fumihiro
    • Electrical & Electronic Materials
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    • v.11 no.10
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    • pp.13-18
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    • 1998
  • Many factors influence SF6 insulation and a number of them have been clarified quantitatively. For the next generation of gas-insulated switchgear (GIS), quantitative considerations of these factorsare necessary to enhance reliability and to make GIS more compact. Advanced insulation technology this purpose is described.

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Status of Advanced Tecnhologies and Domestic Researches for Development of Korean Next Generation Maglev (한국형 차세대 자기부상열차 개발을 위한 선진기술분석 및 국내연구현황)

  • Cho, Han-Wook;Bang, Je-Sung;Han, Hyung-Seok;Sung, Ho-Kyung;Kim, Dong-Sung;Kim, Byung-Hyun
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.57 no.10
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    • pp.1767-1776
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    • 2008
  • This paper presents the status of advanced technologies and domestic researches for development of Korean next generation maglev. Generally, two specific configurations such as the EMS (Electromagnetic Suspension) with LSM (Linear Synchronous Motor) and EDS (Electrodynamic Suspension) with LSM can be employed as a propulsion and levitation device of high-speed maglev. Worldwide high-speed maglev developments refer to projects such as the German Transrapid with EMS, the Japanese MLX with EDS, and the U.S. Inductrack with PM (Permanent Magnet) EDS maglev system. In this paper, the propulsion and levitation systems of these world wide high-speed maglev have been reviewed and analysed.

Next-generation Probiotics, Parabiotics, and Postbiotics (Next-generation probiotics, parabiotics 및 postbiotics)

  • Cho, Kwang Keun;Lee, Seung Ho;Choi, In Soon;Lee, Sang Won
    • Journal of Life Science
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    • v.31 no.6
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    • pp.595-602
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    • 2021
  • Human intestinal microbiota play an important role in the regulation of the host's metabolism. There is a close pathological and physiological interaction between dysbiosis of the intestinal microflora and obesity and metabolic syndrome. Akkermansia muciniphila, which was recently isolated from human feces, accounts for about 1-4% of the intestinal microbiota population. The use of A. muciniphila- derived external membrane protein Amuc_1100 and extracellular vesicles (EVs) could be a new strategy for the treatment of obesity. A. muciniphila is considered a next-generation probiotic (NGP) for the treatment of metabolic disorders, such as obesity. Faecalibacterium prausnitzii accounts for about 5% of the intestinal microbiota population in healthy adults and is an indicator of gut health. F. prausnitzii is a butyrate-producing bacterium, with anti-inflammatory effects, and is considered an NGP for the treatment of immune diseases and diabetes. Postbiotics are complex mixtures of metabolites contained in the cell supernatant secreted by probiotics. Parabiotics are microbial cells in which probiotics are inactivated. Paraprobiotics and postbiotics have many advantages over probiotics, such as clear chemical structures, safe dose parameters, and a long shelf life. Thus, they have the potential to replace probiotics. The most natural strategy to restore the imbalance of the intestinal ecosystem normally is to use NGPs among commensal bacteria in the gut. Therefore, it is necessary to develop new foods or drugs such as parabiotics and postbiotics using NGPs.

NextAuction: A DID-based Robust Auction Service for Digital Contents

  • Lee, Young-Eun;Kim, Hye-Won;Lee, Myung-Joon
    • Journal of the Korea Society of Computer and Information
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    • v.27 no.2
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    • pp.115-124
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    • 2022
  • In this paper, we present an NFT auction service for the next generation, named NextAuction, which can reliably trade ownership of individual content using DID technology. Recently, as the types and sizes of tradable digital assets have expanded, the number of NFT transactions has also increased, and a significant number of marketplaces are being operated. But, the current user authentication methods of NFT marketplaces are done only through the associated blockchain wallets. It is desirable that ownership transfer through NFT transactions be transparently managed based on a more reliable identity authentication service. NextAuction increases the reliability of auction service participants by transparently and consistently providing identity authentication for users of auction services based on the DID technique using the Klaytn blockchain. In addition, in preparation for server failure that may occur during the auction of individual content, it provides users with a robust auction service using the BR2K technique that continuously provides consistent service through the replication of a target service. The NextAuction service is developed by extending BCON, a blockchain-based content management service.

The Direction of Next Generation's Terminal Architecture (차세대 컨테이너터미널 건축계획의 방향 고찰)

  • Kwak Moon Jung;Kim Tae Gon;Cho Yong-Soo
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2004.11a
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    • pp.121-126
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    • 2004
  • The operation and function of the ports today require new trends and changes in continuous increase of freight and volume of containers as well as complexity of surface transport system. These changes affect future operational systems, Transport equipments and arrangements of comtainer blocks. To achieve an adaptable container port of the next generation. The architectural planning also needs to be changed in accordance with it. We try to probe some problems of current architecture related container ports system and expect some future changes. Finally, We studied adaptable architectural planning trends and methods of indoor and outdoor spaces of operational building, gates etc in container pors of next generation.

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An Analysis on the Functions of the Next Generation Library Catalog: With a Focus on SearchWorks (차세대 도서관 목록의 제반 기능에 관한 분석 - SearchWorks를 중심으로 -)

  • Yoon, Cheong-Ok
    • Journal of the Korean Society for Library and Information Science
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    • v.47 no.4
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    • pp.5-23
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    • 2013
  • The purpose of this study is to examine the functions and features of SearchWorks developed as the Next Generation Library Catalog by Stanford University Libraries. It was designed to fully represent the needs and search behaviors of users, with Blacklight, an open source software. Its main features are not different from those standard functions supplied by other commercial packages of Next Generation Library Catalogs, and its continuing improvement and changes, including the addition and expansion of more useful functions and the removal of unnecessary ones, have been observed since the introduction of a beta version in 2010.

The Study on Performance Model of Open Rotor Engine for Next Generation Aircraft (차세대 항공기용 Open Rotor 엔진 성능 모델 연구)

  • Choi, Won;Kim, Ji-Hong
    • Proceedings of the Korean Society of Propulsion Engineers Conference
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    • 2011.11a
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    • pp.842-849
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    • 2011
  • Open Rotor Engine is one of the several new technologies offering potential solution for the next generation aircraft. The coupling of ultra high bypass ratio and aerodynamically advanced fan blade design allow the open rotor engine to achieve and advantage in fuel consumption. The open rotor engine does have more thrust lapse than the general high bypass turbofan. The open rotor engine performance model was analyzed using a reference data based on the GE36 which was designed and tested data at which time a F404 turbojet was used as the core. The performance model of open rotor engine was verified by referred test data and was evaluated to be properly constructed, through the comparison of recent Next generation turboprop engine performance.

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A Study on the Features of the Next Generation Search Services (차세대 검색서비스의 속성에 관한 연구)

  • Lee, Soo-Sang;Lee, Soon-Young
    • Journal of the Korean Society for information Management
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    • v.26 no.4
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    • pp.93-112
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    • 2009
  • Recently in the area of the information environment, there are lively discussions about search 2.0 which is representative of the next generation search services. In this study, we divide information search model into matching and linking models according the developmental stages. Therefore, on the one hand, we analyze the background, main concepts, related attributes and cases of the next generation search services and the other, we identify the representative keywords by the group analysis of various attributes and cases of it. The result shows that the main keywords such as social search, artificial intelligence and semantic search, and relation/network based search are representative of the search 2.0.

A Study on the Cooling Load of South and East Facing Apartment Houses (남향과 동향 집합주택의 냉방부하에 관한 연구)

  • 박근우;이경희
    • Journal of the Korean housing association
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    • v.11 no.2
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    • pp.129-137
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    • 2000
  • This study is about the difference of South and East facing Cooling load of Apartment s Houses using Dynamic Heat-flow Calculation. Therefore, the purpose of this study is come in to use Material for the Thermal Environments of Apartment Houses. The results of the analysis are below. (1) For the peak load of degree hour; The highest is "I" unit and the next high load is H, F, E, C, B, G, D and A unit for the south facing Apartment houses. The higher load is "H" unit and the next high load is I, E, F, B, C, G, D, A Unit for the east facing Apartment houses. (2) For the total load of degree day; The highest load is "I" unit and the next high load is H, G, F, E, C, B, D and A Unit for the south facing Apartment houses. The highest load is "H" unit and the next high load is I, G, E, F, B, C, D, A Unit for the east facing Apartment houses. (3) For the total load of degree day; The highest load is "H" Unit for the east facing Apartment houses and the Lowest load is "A" Unit for the south facing Apartment houses.is "A" Unit for the south facing Apartment houses.nt houses.

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