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        검색결과 11

        6.
        2018.04 구독 인증기관·개인회원 무료
        In this paper, four point bending tests were carried out to analyse flexural strengthening effect by CFRP (Carbon Fiber Reinforced Polymer) layers for I shape PFRP (Pultruded Fiber Reinforced polymer) flexural member retrofitted with CFRP sheet. Comparing load-displacement relation and sectional stress distribution, the flexural strengthening effect by the number of CFRP layers was founded.
        7.
        2013.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Chroma key technique which composes images by separating an object from its background in specific color has restrictions on color and space. Especially, unlike general chroma key technique, image composition for stereo 3D display requires natural image composition method in 3D space. The thesis attempted to compose images in 3D space using depth keying method which uses depth information of Microsoft Kinect. Object was converted into point cloud type in 3D space after separating it from its background according to depth information. The image in which 3D virtual background and object are composed obtained and played stereo 3D images using a virtual camera. The research showed naturally composed stereo 3D images as well as the feasibility of applying stereoscopic 3D mixed reality image technology.
        4,000원
        8.
        2013.03 KCI 등재 구독 인증기관 무료, 개인회원 유료
        We generated a high resolution 3D object using a commercial DSLR camera and the low depth information of Kinect. High resolution depth map was obtained through camera calibration between the DSLR and Kinect sensor. 3D mesh model was created by the high resolution depth information and mapped with RGB color value. The experimental result showed that it is possible to create high resolution 3D object from the depth camera. This paper is expected to be applied to reality game graphic.
        4,000원
        9.
        2011.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Low temperature desorption of the used activated carbons that contain VOCs (Volatile Organic Compounds) produced from Shiwha/Banwal industrial complex were investigated. Iodine number and BET specific surface area of the activated carbons manufactured by N company in China were measured to see their characteristics prior to use in the experiment. Activated carbons were used to adsorb VOCs in a company of Shiwha/Banwal complex. Used activated carbons were collected and desorbed by the desorbing facility. After 1st adsorption and 1st desorption samples were taken for analysis. Desorbed activated carbons were reused in the same company. After 2nd adsorption and 2nd desorption samples were taken again for analysis. 4 samples were analyzed by TGA (Thermogravimetric Analyzer) at 170℃ with a heating rate of 10℃/min. Also, activation energies and reaction orders of desorption reaction were assessed by employing Friedman method and Freeman-Carroll method. The activation energies were 16.86kJ/mol by Friedman method and reaction orders were 0.36∼5.16 by Freeman-Carroll method.
        4,000원
        10.
        2011.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        In Shiwha/Banwal industrial complex, activated carbons are widely used to remove VOCs. General method of regenerating activated carbons is proceeded at high temperature (800℃). But it causes loss of activated carbons and high cost. In this study, activated carbons were treated at a low temperature of 170℃ to avoid these. Desorption reactions were analyzed based on the data obtained from a thermogravimetric analyzer. THC(Total Hydro Carbon) analyzer was used to analyze desorption reaction of activated carbons.
        4,000원
        11.
        2009.08 KCI 등재 서비스 종료(열람 제한)
        컨테이너 터미널의 경쟁력을 높이기 위해서는 터미널 생산성 향상이 중요한 요소라고 할 수 있다. 이러한 생산성에 영향을 줄 수 있는 요인은 다양하다. 그 중 야드이송장비의 경우, 특정 선석크레인(QC, Quay Crane)에 야드트랙터(YT, Yard Tractor)가 고정 할당되는 방식에서 타수 QC들의 작업을 처리하는 풀링 방식으로 전환하여 YT의 생산성을 올리고 있다. 현재 국내 터미널에서도 YT 풀링을 도입하고 있는 실정이다. 하지만 아직 적절한 풀링 범위 및 효과적인 YT 할당 계획에 대한 노력은 부족한 실정이다. 본 논문에서는 YT 풀링 운영을 더 효율적으로 할 수 있도록 YT 풀링이 담당할 작업범위 결정에 미치는 요인의 도출과 상황에 따른 YT의 작업할당 모형에 대해서 제시하였다.