• Proceedings of the Acoustical Society of Korea Conference
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• spring
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• pp.115-118
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• 2004

일반적으로 오디오 시스템 혹은 AV 장치의 음질 평가는 숙련된 음질 평가자(Trained Listeners)의 주관적 평가 기준에 의해 평가가 이루어지고 있다. 그러나 이러한 방법은 평가자의 개인적 선호도(Preference) 및 청취 환경에 따라 음질 평가 결과가 왜곡되는 현상이 쉽게 발생하게 된다. 이런 이유로 주관적인 음질 평가 방법은 음질 평가자의 체감 음질과 직접적인 관계가 있음에도 불구하고 정확성 및 시불변성에 취약한 문제점을 내포하고 있다. 본 논문에서는 오디오 시스템 혹은 AV 장치에 대한 주관적인 음질 평가 방법을 기본 모델로 이용하여 주관적 음질 평가 항목과 계량화가 가능한 객관적 음질 평가 항목과의 상관 관계를 규명하여 기존의 주관적 음질 평가를 대체할 수 있는 객관적 음질 평가 방법을 새로이 제시한다.

• Journal of rehabilitation welfare engineering & assistive technology
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• v.9 no.1
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• pp.53-60
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• 2015

We conducted a long-term and short-term usability testing on the built-in speech synthesizer of a screen-reader for the people with visual impairments. A total of 20 persons with visual impairments participated in the short-term usability testing, and 10 of them participated in the long-term usability testing. Naturalness and clarity of the synthetic speech were evaluated by MOS scores, preference for various synthetic speeches was examined through a preference test, and the users' satisfaction level and other requirements for the synthetic speech were evaluated by open feedback. We also examined naturalness, clarity, preference, and user requirements for the synthetic speech through a long-term usability testing. Then, we compare and contrast the long-term and short-term usability testing results.

• Journal of the Korean Institute of Landscape Architecture
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• v.40 no.6
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• pp.47-59
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• 2012

In this study, species and seasonal scenery image were made using 3D simulation modeling to evaluate emotional image of street trees in the roads cape. Study site are set in Tongdaeguro, located in Daegu Metropolitan City and Cedrus deodara, Metasequoia glyptostroboides, Liriodendron tulipifera L., and Zelkova serrata were selected to evaluate the species. In the survey result, it appears that Zelkova serrata is the highest preference for summer landscape and Metasequoia glyptostroboides is the highest preference for fall and winter landscape. With regard to the factor analysis, in order to derive emotional evaluation factor, aesthetic factor, perception factor, individuality factor, natural factor, and spatial factor were derived and aesthetic factor is the greatest impact for preference common in all seasons. Preference and positive emotional image of Metasequoia glyptostroboides is evaluated as the highest in the winter and the aesthetic factor score reduction is less than the other species. This study will be used in offering objective data and landscape planning for making comfortable roads cape through the quantitative evaluation as each species and seasonal changes.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.30-35
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• 2008

The purpose of this study is to analyze and define user's emotional satisfaction factors to the PC OS GUI image. The study is to investigate the relationship between PC OS GUI Image and Sensitive Vocabula교 based on user's emotional preference. 47 user preferred sensitive words are collected by the initial survey. Through the similarity test, 47 words are narrowed down to 20 comprehend words. The semantic differential methods is used in the final survey with 5 step questionnaire. From this process, user preferred the GUI design that is vocabularized as Clear, Easy, Safety, Stability. Additionally, the result shows that the image of Clear is related to Safety and the image of Easy is related to Stability. The result of the study could be used in design PC OS GUI as base data.

• Korean Journal of Environment and Ecology
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• v.21 no.2
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• pp.134-140
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• 2007

The purpose of this study is to investigate the landscape image and visual preference for ridges of the Seongpanak district at Mt. Hallasan. For this, the evaluation of the artificial and natural landscape is compared through the medium of color slides. Data is analyzed through the descriptive statistics and spatial image is analyzed by factor analysis algorithm. Principle component analysis and Varimax Method are applied to extraction and factor rotation respectively. The results of this study can be summarized as follows : General visual imagesthe Seongpanak district at Mt. Hallasan are clean, beautiful and attractive. The degree of visual preference increased commensurately with the lower rate of artificial factors. Landscape Factors covering the spatial image are found to be 'aesthetic value', 'spatial scale', 'natural quality', and 'topography' factor, which account for 57.6% of the total variants. The aesthetic value variable is the most important factor in visual preference and the unnatural factors are found to present negative elements with visual preference.

• Korean Journal of Culture and Social Issue
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• v.17 no.3
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• pp.261-285
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• 2011

In our studies, We defined the concept of social reputation and aimed to estimate the effect of social reputation on likability, trust, preference of interpersonal relationship. To accomplish these goal, photographs of 12 persons(six young unmarried man, six young unmarried women) volunteered were shown to 60 raters, and the one male and one female pictures of scores of facial attractiveness are nearest to median were selected as experimental figures in preliminary study. After this, We asked 260 raters to assess likability, trust, preference of interpersonal relationship after showing raters the chosen pictures of man and woman and telling scenario of positive, negative reputation about these two persons. The outcomes showed that in both men and women, likability, trust, preference of persons who gained positive reputation were significantly higher than persons gained negative reputation. Facial attractiveness was effect on likability, trust, and preference, but effect size of reputation was much higher on likability, interpersonal preference, especially trust level. Also, in three-way ANCOVA results, Woman has showed higher likability and trust than man under the condition of good reputation in both woman was rater and object to be assessed, but on the contrary, likability, trust, and preference of woman were lower than man in either woman was rater or object to be judged under the bad reputation,. Lastly, this study's implications and limitations were discussed.

• Journal of the Korean Society of Clothing and Textiles
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• v.23 no.4
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• pp.541-550
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• 1999

The purpose of this study is to find out the factors that explain the sense of touch and preference of man-made leather. Date base of descriptors for man-made leather was collected by interviewing 50 consumers, 33 different kinds of commercial man-made leathers(synthetic leather and artificial leather) were assessed subjectively by 605 consumers using the 9-point scale of 34 pairs of bipolar descriptors based on the data base. Subjective ratings were analyzed by principal axis factoring with varimax rota-tion. The sense of touch of man-made leather is explained by five factors ; surface property stretchiness thickness& weight thermal property(warmth & coolness) and moisture property (sticky & clingy). The difference in the sense of touch of man-made leathers is mainly attributable to surface property and stretchiness. And the preference of man-made leathers is mainly attributable to surface property and stretchiness. And the preference of man-made leather is explained by three factors ; surface property stretchiness and quality. Higher preference is found in man-mad leather of better quality touch and softness.

• 한국HCI학회:학술대회논문집
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• 2008.02a
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• pp.135-140
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• 2008

최근 관련 기술의 발전과 디지털 컨버전스의 가속화로 모바일 제품이 소형화, 다기능화 되어 가고 있다. 이러한 경향에 따라, 다양한 기능을 지원하기 위한 높은 사양의 디스플레이가 요구되고 있으며, 많은 업체들이 고화질, 고해상도 디스플레이의 개발에 경쟁적으로 매진하고 있다. 그러나 사용자의 인지적 특성을 고려하지 않은 고해상도 경쟁은 생산비용만 높이는 결과를 초래할 수 있다. 본 연구는 디스플레이의 설계 요소별 선호도를 분석하고, 사람이 탐지할 수 있는 두 자극 간의 최소한의 차이역(difference threshold)인 JND(Just Noticeable Difference)을 활용하여, 설계 요소의 인지적 특성을 파악하는 것을 목적으로 한다. 이를 위하여 모바일 제품에 주로 사용되는 TFT-LCD 를 평가 대상으로, 30 명의 피실험자를 대상으로 JND 측정실험을 수행하였으며, 실험결과를 바탕으로 디스플레이에 대한 주요 설계변수들의 특성을 파악하였다. 이 연구결과는 사용자의 선호도를 고려한 모바일 제품의 디스플레이 설계지침으로 활용될 수 있을 것이다.

• Proceedings of the Acoustical Society of Korea Conference
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• autumn
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• pp.275-278
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• 2001

RASTI와 $D_{50}$이 명료도와 상관이 높은 것은 사실이지만, 음질과는 상관이 없다. RASTI는 잔향과 잡음이 적으면 값이 높아지지만, 스피커 자체에서 재생되는 음질이 찌그러지거나 명료하지 않은 음질이 재생되어도 값은 변하지 않는다. $D_{50}$ 스피커에서 재생되는 음질과 관계없이 직접음 성분이 많으면 단지 값이 높아질 뿐이다. 그런데, RASTI와 $D_{50}$이 높으면 음질도 좋을 것이 라고 생각하는 경우가 많다. 따라서 스피커의 음향 특성에 따른 RASTI, $D_{50}$의 변화 측정 및 음질 선호도 평가를 실시하고, 재생 주파수 대역에 따른 RASTI, $D_{50}$의 변화 측정 및 음질 선호도 평가를 실시하므로써, 명료도 척도와 음질과의 상관을 고찰하였다.

• Science of Emotion and Sensibility
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• v.21 no.2
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• pp.89-100
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• 2018

This study was performed to develop face towel fabrics that reflect consumer's tactile preferences. Three different kinds of pile fiber (100% cotton, 50% cotton/50% bamboo, 100% bamboo) of the towel fabrics were selected for the test. The towels were laundered one, five and 10 times repeatedly in a normal washing condition, and fabric softeners were applied to the towels that were laundered 10 times. The flexibility and absorbency (absorption rate and water absorptivity) were evaluated by laundering times of the face towels. Male and female university students evaluated their subjective sensations of the face towels. The flexibility of towel fabrics showed no significant difference according to type of pile fiber or laundering time. The absorbency of the towels was significantly different according to the type of pile fiber and laundering time. The absorption rate was higher in 100% bamboo fiber, and water absorptivity was higher for cotton fibers. There were no significant differences in subjective sensation according to the type of pile fiber of towels before laundering. As the frequency of laundering increased, the tactile preference for the towel slightly decreased. The 100% bamboo towel was rated the most comfortable among the three kinds of towels. The tactile preference for the towels was influenced by smoothness, fabric softness, and softener treatment, in that order.