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박우상 ( Woo Sang Park ),김상훈 ( Sang Hun Kim ) 한국물환경학회 2013 한국물환경학회지 Vol.29 No.4
In this study, we conducted whole effluent toxicity (WET) proficiency testing based on the results which EC50 value of 3 types (A, B, C) unknown samples calculated from 32 water quality measurement agencies in Korea. WET proficiency testing was expected to their improve of analysis skill and ensure reliability of analysis results. Ultimately, it is intended to promote the reliable enforcement of WET. WET proficiency testing was evaluated using the z-score, robust z-score and the results showed that 30 participating agencies were “compliance”. In addition, EC50 values of “unknown sample A” were the normal distribution. Therefore, “unknown sample A” was considered as the most suitable standard toxicity substance.
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TFT-LCD의 3차원 영상출력을 위한 렌티큘러 렌즈 최적설계
김일주,박우상,Kim, Il-Joo,Park, Woo-Sang 한국전기전자재료학회 2009 전기전자재료학회논문지 Vol.22 No.3
In this study, we have researched the optimum design method of the lenticular lens sheet for 3D displays on a TFT-LCD panel, to offer a more stable stereoscopic image, improved 3D quality, and a wider viewing zone. Especially, we have defined the viewing zone width (a parameter denoted as Z) to apply it to the optimum design. The results of this new design method have been compared with the existing design method. As a result, it is revealed that the proposed design method improves the stereoscopic image quality by reducing the black matrix zone width.
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