• 제목/요약/키워드: Technical

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오픈 소스 블록체인 프레임워크 기반의 상품증권 거래 시스템 (Commodity Securities Trade System based on Open Soure Blockchain Framework)

  • 이세훈;문효재;이재승;김재승;공진용
    • 한국컴퓨터정보학회:학술대회논문집
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    • 한국컴퓨터정보학회 2018년도 제57차 동계학술대회논문집 26권1호
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    • pp.75-76
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    • 2018
  • 본 논문에서는 상품증권 거래 시스템에 블록체인을 적용하여, 여러 서비스에 거래 시스템을 적용할 수 있게 설계하였다. 블록체인 오픈소스 프레임워크인 Hyperledger를 사용하여 시스템의 안정성을 높였다. 단말기의 배터리 소모량과 네트워크 트래픽을 감소시키기 위한 방식으로 거래소를 적용하는 방법에 관해 기술하였다. 또한, 서드 파티 개발자가 플랫폼을 쉽게 구축할 수 있도록 API 구조를 설계하였다.

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딥러닝 기반 산업현장 고소작업자 행동분석 시스템 (Deep Learning based Behavior Analysis System for High Rise Worker at Industrial Field.)

  • 이세훈;문효재;유진환;김현우;염대훈
    • 한국컴퓨터정보학회:학술대회논문집
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    • 한국컴퓨터정보학회 2018년도 제57차 동계학술대회논문집 26권1호
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    • pp.51-52
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    • 2018
  • 산업 현장에서 작업자의 잘못된 작업행동으로 인한 안전사고가 꾸준히 발생하고 있다. 현재는 관리자가 육안으로 작업자의 위험행동 여부를 관리하고 있지만, 모든 작업자를 관리자 한명이 관리하기에는 현실적으로 어려움이 있다. 본 논문에서는 이 문제를 해결하기 위해 고소 작업자의 안전벨트에 IoT 장치를 부착하여 행동 데이터를 클라우드에 업로드하고, 딥러닝을 통해 작업자 위험행동 여부를 분석한다. 분석한 결과를 관리자가 쉽게 모니터링 할 수 있도록 하여, 안전사고를 예방하도록 하는 시스템을 설계하였다.

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철도시스템안전 기술트리 체계화 방안에 관한 연구 (A Study of Plans for systemizing Railway System Safety Technology Tree)

  • 홍선호;조연옥
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2005년도 추계학술대회 논문집
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    • pp.623-629
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    • 2005
  • A technical road map is one of critical research methods which include mid/long term strategies and objectives. There are many of projects conducted using this road map. A technical tree is used at the step of planning of the projects. This research was aimed at reviewing previous systems for conducting researches for and a basis required for improving railway safety in the future by finding out inconsistency arising from physical WBS, which is methodology of defining in existing railway technical trees. In the process of this research, we considered differences between systems safety and prevention as well as natures of them using the established technical tree, and set up plans for improving technical tree to secure railway safety as an integrated system.

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Stabilization of Ascorbic Acid using Anhydrous Multiple Emulsion

  • Jeon, Jong-Taek;Kim, Yoon-Suk;Ko, Min-Su;Kim, Jong-Geun;Kim, Ik-Soo
    • 대한화장품학회:학술대회논문집
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    • 대한화장품학회 2003년도 IFSCC Conference Proceeding Book II
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    • pp.313-318
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    • 2003
  • Vitamin C's function and mechanism are comparatively well known among the several kinds of vitamins. Inhibition of free radical. promotion of collagen synthesis, restraint of melanin formation and resolution of melanin are its main functions. But Vitamin C is very easy to oxidize by heat, moisture or air so it causes stability problem to make formulation. To solve these problems unique formulating method or derivatives using method could be effective. Object: First, stabilize 10% of Ascorbic acid as polyol/silicone emulsion and try to make polyol/silicone/polyol anhydrous multiple emulsion secondly. And then, encapsulate with porous power to enhance the stability of Ascorbic Acid from formulating method.

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Functional Surface Coating Technologies of Steel Industry

  • Choi, Chang-Hoon;Park, Sung-Ho;Kim, Jong-Sang
    • Corrosion Science and Technology
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    • 제9권6호
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    • pp.270-275
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    • 2010
  • Technical issues of steel industry change along with other industrial progresses. Traditionally, steel protection from corrosion environment was the major issue and galvanic metal coatings were mainly used to extend the lifetime of steel products. Nowadays, requirements for steel have become more diversified. More various surface and material properties are required from different field of applications. Naturally, functional surface coating has become one of the most studied areas in steel industry. For functional surface coating, various process technologies and coating products are investigated. In this article, recent trends of functional coating technologies and products are introduced with brief technical descriptions of representative coating products.

Kinect 센서 기반의 Bubble Pang 게임 설계 및 구현 (A Design and Implementation of Bubble Pang Game Based on Kinect Sensor)

  • 이원주;이화영;문보라;김수지;이제경
    • 한국컴퓨터정보학회:학술대회논문집
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    • 한국컴퓨터정보학회 2016년도 제53차 동계학술대회논문집 24권1호
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    • pp.97-98
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    • 2016
  • 본 논문에서는 XNA Game Studio를 이용하여 Kinect 기반의 Bubble Pang 게임을 설계하고 구현한다. 이 게임은 유아용 게임으로 3개 스테이지 과일마을, 숫자학교, 영어하우스로 구성되어 있다. 게임 캐릭터와 각 스테이지는 유아용에 적합하도록 부드러운 느낌을 주기 위해 전체적으로 둥근 곡선을 이용하여 구현한다. 각 스테이지에서는 게임 캐릭터가 플레이어에게 힌트를 주고, 그 힌트를 참고하여 해답을 찾는다. 또한, Kinect 센서로 얻은 플레이어의 뎁스 정보와 스켈레톤 정보를 이용하여 플레이어의 동작과 게임 캐릭터 동작을 연동시킨다.

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Nanostructural Formation in Steel Material by ECAP

  • Kvackaj, Tibor;Zemko, Michal;Kuskulic, Tomas;Kocisko, Robert;Besterci, Michal;Dobatkin, Sergej V.;Molnarova, Maria
    • 한국분말야금학회:학술대회논문집
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    • 한국분말야금학회 2006년도 Extended Abstracts of 2006 POWDER METALLURGY World Congress Part 1
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    • pp.130-131
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    • 2006
  • In the present research work was searched the influence of severe plastic deformation (SPD) realized by ECAP (equalchannel angular pressing) on structural, mechanical and plastic properties of IF (interstitial free) steel. For physical simulation ECAP process with right angle channels $(90^{\circ})$ was used. The ECAP process was numerical simulated (namely its course of temperature, strain and stress fields and deformation forces) by FormFEM software, too.

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고속액체 크로마토그라프법을 이용한 제제중 Aclatonium Napadisilate의 정량 및 함량균일성에 관한 연구 (High Performance Liquid Chromatographic Determination and Content Uniformity of Aclatonium Napadisilate Preparation)

  • 김면종;박세호;노회숙;김용주;허재두
    • Journal of Pharmaceutical Investigation
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    • 제16권2호
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    • pp.72-75
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    • 1986
  • A convenient high performance liquid chromatographic method was established for the quantitative determination and content uniformity test of aclatonium napadisilate preparation. This method was more simple to make the sample solution for injection, and easy to determine the content in the preparation. Aclatonium napadisilate was chromatographed using a $Lichrosorb-NH_2$ column $(4mm\;{\times}\;25\;cm$, and acetonitrile-water mixture (83:17) as an eluent at a flow rate of 1.8 ml/min. RI-detector response was linear over a range of $0.5{\sim}2.0%$ aclatonium napadisilate under above conditions. Reproducibility studies gave relative standard deviation of 1.29%.

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공학인증 매뉴얼에서 콘텐츠 재사용을 위한 정보 아키텍처 모델링 (Modeling an Information Architecture for Content Reuse in Engineering Accreditation Manuals)

  • 구흥서
    • 전기학회논문지
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    • 제63권1호
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    • pp.150-155
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    • 2014
  • Content is often developed inconsistently in technical authoring environments, as new documents are created and existing documents are revised. The Darwin Information Typing Architecture(DITA) is an XML-based, end-to-end architecture for authoring, producing, and delivering technical documentations. The core of most advanced authoring and publishing systems is the concept of content reuse. In this paper, we describe to design and implement an authoring and producing system of different technical documentations for the accreditation programs of Engineering Education using DITA XML. It provide a content reuse method for accomplishing the improvement of content consistency and the speed-up of the production in technical documentations.

자료포괄분석과 생산성지수분석을 이용한 국내 SI기업의 효율성 분석 (Analyzing the Technical Efficiency of Korean System Integration Firms Using DEA and Malmquist Productivity Analysis)

  • 김건식
    • 한국IT서비스학회지
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    • 제5권1호
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    • pp.1-16
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    • 2006
  • This paper analyzes the technical efficiencies of 40 Korean system integration firms using data envelopment analysis (DEA) and Malmquist productivity indices. Technical efficiencies on average had been decreased over the five year period and the efficiency difference between best practice firms and catch-up firms had been increased during this period, meaning that the industry structure has become matured and the possibilities for catch-up firms to be efficient are not remained so much. The differences in efficiency by the differences in ownership structures are statistically significant. It implies that the efficiencies of group-affiliated firms have come from benefits such as the captive market umbrellas, not from their own management competencies. In addition, the technical efficiency is highly correlated with captive market sales, information productivity, sales per employees, rates of value added, returns on invested capital, and EBITDA.