• 영어어문교육
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• 제9권spc호
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• pp.99-112
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• 2003

This study investigated how different types of formal instruction affect the second language looming of English grammatical structure among Korean high-school students. The linguistic focus of the study was English present perfect, which often creates learning problems for Korean learners of English. Subjects were divided into a control group and an experimental group (Enhanced group). The input the subjects in the experimental group received was manipulated by visually enhancing (with highlighting of the target structures in a reading text). Learners' awareness of the rules throughout the treatment period, as well as accuracy of target structures was measured. Results indicated that subjects in the Enhanced group showed higher performance than the control group. Further, awareness of rules that learners developed over the treatment period did not provide any advantage in learning.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권12호
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• pp.5998-6016
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• 2017

In thin-film transistor liquid-crystal displays (TFT-LCDs), which are most commonly used in mobile devices, the backlight accounts for about 70% of the power consumption. Therefore, most low-power-related studies focus on realizing power savings through backlight dimming. Image compensation is performed to mitigate the visual distortion caused by the backlight dimming. Therefore, popular techniques include pixel compensation for brightness recovery and contrast enhancement, such as histogram equalization. However, existing pixel compensation techniques often have limitations with respect to blur owing to the pixel saturation phenomenon, or because contrast enhancement cannot adequately satisfy the human visual system (HVS). To overcome these, in this study, we propose a novel dimming technique to achieve both power saving and HVS-awareness by combining the pixel compensation and histogram specifications, which convert the original cumulative density function (CDF) by designing and using the desired CDF of an image. Because the process of obtaining the desired CDF is customized to consider image characteristics, histogram specification is found to achieve better HVS-awareness than histogram equalization. For the experiments, we employ the LIVE image database, and we use the structural similarity (SSIM) index to measure the degree of visual satisfaction. The experimental results show that the proposed technique achieves up to 15.9% increase in the SSIM index compared with existing dimming techniques that use pixel compensation and histogram equalization in the case of the same low-power ratio. Further, the results indicate that it achieves improved HVS-awareness and increased power saving concurrently compared with previous techniques.

• 디자인학연구
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• 제17권1호
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• pp.153-162
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• 2004

본 논문은 웹을 멀티미디어시대의 쌍방향 마케팅 미디어로서 재인식하고, 웹에서 감성디자인이 브랜든 태도에 미치는 긍정적 효과를 검증하고자 하였으며, 사용자의 감성에 호소하는 영향요인을 분석하고자 하였다. 본 연구는 1차. 2차의 사용자 조사를 중심으로 진행되었으며, 웹에서의 감성디자인에 대한 기초연구로써 사용자가 웹에서 느낄 수 있는 감성을 감성공학에서의 감성분류와 선행논문에서의 사용자 인터랙션 분류에 기초하여 기능적. 심리적. 감각적. 관계적. 문화적 감성 5가지로 그 유형을 정리하였다. 이중 디자인과 관련이 있는 기능적. 감각적. 심리적 감성요인을 만족시키는 감성디자인이 브랜드태도에 미치는 효과를 검증하기 위하여 1차로 국내 7개 패스트푸드 사이트를 대상으로 온라인 조사를 실시하였다. 1차 조사에서는 웹사이트에서 사용자 감성만족이 \circled1브랜드 선호도와 신뢰도 상승과 \circled2브랜드 이미지 제고 \circled3구매욕구 발생에 직접적인 영향요인으로 작용하는가를 중점적으로 조사하였다. 이 조사의 분석결과를 토대로 2차 조사(FGI)를 실시하였으며, 사용자 심층 인터뷰를 통해 \circled1사용자가 패스트푸드 사이트에서 원하는 주요 감성 \circled2 사용자가 강한 감성적 어필을 느끼는 디자인유형 \circled3감각적 감성에 영향을 미치는 디자인요소에 등에 대해 분석하였다.