• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.7
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• pp.3528-3537
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• 2013

Evaluation indices of the panelizing optimization for Architectural freeform surfaces are proposed for quantitative evaluation through the case studies on panelizing optimization and evaluation index for Architectural freeform surfaces. Proposed evaluation items are adherence to original design intent, production ease, and continuity. The evaluation index for adherence to original design intent is surfaces fitness, the evaluation indices for production ease are planarity, planar panel ratio, and the evaluation indices for continuity are tangent continuity, and divergence. Algorithms are also suggested to compute the proposed evaluation indices.

• Tunnel and Underground Space
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• v.28 no.4
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• pp.325-342
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• 2018

The ${\bigcirc}{\bigcirc}$ mines have been tried in various ways to perform secondary and tertiary mining in fragile rock properties. For such mining, the panels should be maintained while the mining compartments are divided and paneled. In this study, the mining gate between the panels was maintained by a steel beam and the panel life time was probabilistic evaluated. We used Taylor's formula for panel life time and modified the Pert distribution conceptually. The main input data were determined by the Pert distribution, and Monte Carlo simulation was performed to evaluate the panel life time for the probability distribution. As a result, it was analyzed that the panels could be stand-up time from a minimum of 6.5 days to a maximum of 20.6 days when the panel width was 18 to 25 m. At the confidence level of 90%, the panel life time was analyzed as 8.2-15.6 days. The short panel life time is not possible with the panel mining. Therefore, it was planned to construct a steel beam for panel maintenance. As result, it was analyzed that steel beam for panel maintenance with mining plan of less than 3 years according to mine could maintain panel within 90% confidence level.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.36 no.11B
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• pp.1403-1412
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• 2011

This study performed a detecting research of promising R&D field utilizing intuitive methodology regarding OLED illumination industry. For this, 69 professionals of the illumination industry in Korea were composed as a panel to hold an in-depth interview and survey for 1 month. The study classified the OLED illumination industry as 4 fields of panel, material/component for panel, manufacturing equipment, and lighting system, and selected core technology for each field, and divided it into a total of 14 possible fields for R&D. As a result of evaluating the technological competitive power for each field, the field in Korea which received the highest technological competitive power was OLED panel, and contrarily, technological competitive power of material/component for OLED panel showed the lowest, which requires improvement Meanwhile, evaluating economical aspect, conformity to policy, and effectiveness of R&D in general, 7 promising R&D fields were selected. The 4 core technologies of OLED panel, which are, white, transparent, color change and flexible OLED manufacturing technology were evaluated as the most promising fields, and next, organic material for surface light source, material/component for substrate and equipment for forming large sized substrate were evaluated as promising fields.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2009.06a
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• pp.30-31
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• 2009

전하가 다른 두 종류의 토너입자를 ITO 기판에 격벽 높이의 차이를 두어 제작한 패널을 사용하였다. 토너입자를 충전할 때 동일한 격벽 높이의 패널을 사용하는 것과 서로 다른 패널을 사용하여 합착, 2가지 type을 제작하였다. 제작된 패널을 전압별로 구동하고 각 구동전압에서의 광특성을 측정하였다. 셀 내부에 충전되어 있는 입자보다 운동량이 적은, 즉 셀 내부에서도 격벽 표면에 흡착되어 있는 토너입자들이 구동과 광특성에 어떠한 영향을 미치는지 평가하였다.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2001.05a
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• pp.253-261
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• 2001

화장품의 사용감은 개개인에 따라 다양한 기호를 나타내며 상대적이고 감성적인 개념들이 우선하게 된다. 이러한 관능특성들을 보다 객관적이며, 과학적으로 고찰하고자 하는 연구분야가 바로 관능평가이다. 본 연구에서는 메이크업 단계 중 베이스 메이크업에 속하는 제품인 파운데이션의 관능 특성을 보다 객관적이며 신뢰성 있게 평가, 분석하는 전문패널 평가 시스템을 구축하기 위하여 사내 여성을 대상으로 discriminative 및 descriptive 테스트를 실시하였다. 이를 통해 적합한 패널을 선정하였고 일정하게 규정된 일련의 교육과정들을 통해 패널을 훈련시킴으로써 베이스 메이크업 전문 패널 평가 시스템을 구축하였다. 그 후 파운데이션에 대해 질감별 제품을 평가하도록 한 후 이러한 방법으로 수집된 데이터를 신뢰성 있는 통계적 분석법을 이용하여 제품의 사용감 특성이 위치되니 2차원적 공간영역과 제품별 사용감의 특성을 분석하였다. 그 후 분석된 결과를 자사 브랜드 메이크업 라인의 파운데이션 제품에 응용하여 제품을 차별화 시키도록 설계하고 질감별 특징적 사용감과 적합한 특성강도를 제시한 후 이를 나타내는 처방의 제품을 결정하였다. 최종적으로 출시된 제품을 실제 소비자들을 통해 기호형 관능평가를 다시 한번 실시하였으며, 그 결과 실제 느끼는 사용감각 특성과 상품개발 계획 시 소구하고자 했던 관능특성이 일치하게 나타나 사용감 설계의 객관성을 검증하였다. 따라서, 본 연구는 이와 같은 결과를 통해 관능평가를 제품개발에 응용한 활용방안으로 보고자 하였다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.36 no.1
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• pp.13-19
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• 2016

This study is on the optimal rise depth of embossed panel for the ESS water tank. The thickness of panel is reduced at pressing operation, it could be calculated by volume conservation condition. The analysis of panel using STS304 material conducted by FEM. As a result of structural analysis, it was found that the optimal rise depth of arch embossed panel is recommended to be 70~90mm and the optimal rise depth of pyramid embossed panel is recommended to be 150~200mm. The proposed value of optimal rise depth could be a useful to the economic design of ESS water tank panel.

• 발명특허
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• v.31 no.7 s.361
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• pp.66-68
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• 2006

건축을 하는데 있어 무엇보다 중요한 것은 정확한 설계, 시공 및 뛰어난 기술력이며, 각 부분 부분마다의 정확성과 뛰어난 기술이 어우러져 튼튼하고 아름다운 집이 탕생하게 되는 것이다. 이런 조건은 충족시키는 첫 번째 요소라 할 수 있는 국내 건축용 외장재 시장은 약 1조원대의 시장을 형성하고 있으며, 전체 건축비의 약 10%정도를 차지한다. 건축용 외장재 시장은 석재, 유리, 알루미늄, 아연도금철판의 기본 소재에 다양한 가공을 통하여 제품을 생산하고 있으며, 가공 및 시공의 편의성으로 인해 금속계 패널이 점진적으로 시장을 주도하고 있다. 금속계 패널은 크게 복합판넬과 sheet 패널시장으로 양분되며, sheet패널시장이 약 20%정도의 시장을 차지하고 있다. 해외의 경우, 유럽과 일본은 알루미늄계열의 패널과 미국은 철판계열의 패널이 시장을 주도하고 있다.

• Proceedings of the KAIS Fall Conference
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• 2009.12a
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• pp.159-162
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• 2009

세계적인 에너지 자원 무기화와 더불어 에너지 효율이 높은 창호개발이 지속적으로 진행되고 있다. 이중 진공패널은 단열성능이 우수하여 건물에서의 에너지 절약 측면에서 미래의 창호소재로 각광 받고 있으나 구조 및 제조공법에 관한 규명이 되어 있지 않다. 진공패널은 대기압 및 외력에 견딜 수 있도록 구조를 형성해야 하며, 이를 위하여 진공간극을 유지하기 위한 지지대를 사용한다. 본 논문에서는 진공패널에서 지지대의 배열에 따른 진공패널의 응력분석과 이 데이터 평가를 통한 허용응력 내에서의 유리지지대 배열방안을 제시하고 시뮬레이션을 통해 그 타당성을 검증하였다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.4
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• pp.403-412
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• 2021

Despite strengthening requirements for fire retardancy and applied buildings of insulation panels, the number of fires and influence of damage have increased. In this study, the thermal effects were evaluated as the separation distances, and three types of EPS panel, glass wool panel, and gypsum board panel were then selected. Temperature sensors on the panels were installed vertically from the ground. The fire source on the lamination layer of lumber was ignited by changes in the separation distances (0 cm, 25 cm, 50 cm) from the panels. The test results suggested that the maximum temperature was 349 ℃ in the EPS panel. The inside/outside shape changes were limited by the height of the low and middle positions until the critical point of a 25 cm separation distance. Furthermore, the combustion marks appeared after 500 s on average, and then the EPS panel with a high fire strength showed a broad "U type" pattern, glass wool panel, and gypsum board panel showed medium or narrow "V type" pattern. Therefore, the acquired data can provide valuable information for evaluating the fire risks and verifying fire investigation from buildings composed of these insulation panels.

• Journal of the Korean Society for Railway
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• v.10 no.5
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• pp.596-599
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• 2007

A comparative Life Cycle Assessment (LCA) among three types of Electric Motor Unit (EMU) Interior Panel (IP) was conducted. A functional unit for comparative LCA is a weight of IP for 1 EMU. It is assumed that Manufacturing stage and its upstream processes, Use stage and End of Life (EoL) stage are included in the boundary of product system. For Use stage, the weight of IP causes electricity consumption. It is assumed that aluminum IP is recycled and the other IPs are incinerated at the EoL stage. As a comparison results, aluminum IP has much larger environmental impact (5.162pt) than others (FRP IP; 4.069pt, Phenol IP; 4.053pt) even though recycling consideration is included. The manufacturing stage of aluminum IP has relative big environmental impact (1.824pt) and this point make the most important difference from other IPs (FRP IP; 0.1617pt, Phenol IP; 0.4534pt)). Despite of large weight difference between FRP IP (888.96kg) and phenol IP (316kg), the final environmental impact result has only little difference (0.016pt, 0.39%). With this result, the EMU designer can choose IP with a consideration of the environmental performance of IP.