• Journal of the Korean Home Economics Association
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• v.47 no.2
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• pp.97-110
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• 2009

The purpose of this study was to exam the effects of sociocultural attitude toward appearance on perceptual attitudinal body images and clothing behaviors. The research method was survey and the subjects were 447 male and female adolescents in Daejeon. The questionnaire consisted of 4 measuring instruments; sociocultural attitude toward appearance, perceptual and attitudinal body images, clothing behaviors, and subject’s demographic attributions. The data were analyzed by Cronbach's $\alpah$, x$^2$ test, t-test, factor analysis, cluster analysis, using SPSS program. The results were as follows. Adolescents had relatively high level recognition and internalization of sociocultural value toward appearance, and they perceived very thin body type as ideal body and had high interest of their appearance and weight. Sociocultural attitude toward appearance had important effects on adolescents' perceptual and attitudinal body images and clothing behaviors. The adolescents who are receptive to sociocultural value toward appearance had the tendency to distort their body as fat, showed high interest of their appearance and weight, and also showed high clothing interest & psychological dependency, clothing ostentation, and clothing conformity, but low clothing comfort than those who are not receptive to sociocultural value toward appearance.

• Journal of the Korean Society of Clothing and Textiles
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• v.8 no.1
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• pp.21-27
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• 1984

The purpose of this study was to investigate the relationship between perceptual orientation and four aspects of clothing behavior. Perceptual orientation was measured with Choi's Perceptual Orientation Scale, and clothing satisfaction was assessed with Lim and Lee questionnaire. Clothing importance was measured with some items of Kirby's Clothing Attitudes and additional items prepared for this study, Clothing comfort was measured Ivith some items of Creekmore Scales of Eight Clothing Variables and additional items prepared for this study. Clothing conformity was measured by some items of Selker's The Clothing Conformity Inventory and Carpenter's Clothing Opinion Scale and the Kim questionnaire, along with additional items for this study. Altogether 43 items were used. The questionnaire was completed by 480 second year junior and senior high school boys in Seoul. Statistical analysis was performed using the correlation coefficient, t-tests, multiple regression analysis, and analysis of variance. The results were : 1) Perceptual orientation was positively related to clothing satisfaction. 2) Perceptual orientation was negatively related to clothing conformity. 3) Scores of senior high school boys on self-perception and total perception were significantly higher than these of junior high school boys. 4) Clothing satisfaction, clothing conformity and clothing importance were different according to the grade level. That is, junior high school boys had a higher clothing satisfaction ana senior high school boys had a higher clothing conformity and clothing importance score.

• The Journal of the Acoustical Society of Korea
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• v.29 no.4
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• pp.270-277
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• 2010

In this paper, we proposed an algorithm that improves tone quality of noisy audio signals by using ICA(Independent Component Analysis) algorithm and perceptual filters. Many algorithms have been proposed to eliminate the noise from the audio signals, such as spectral subtraction method, perceptual filter, etc. The perceptual filter uses a noise that is acquired from silent ranges in the input signal. In this case, the improvement rate of tone quality decreases if the noise energy is changed by the environmental variation in a signal frame. But the proposed method estimates a noise that is changed at each frame using ICA algorithm. The estimated noise is applied to perceptual filter. To show the performance of the proposed algorithm, several tests are performed to various input signals. With the proposed algorithm, we could confirm the enhancement of tone quality in terms of segmental SNR (SSNR), noise-to-mask ratio (NMR) and Degradation Category Rating (DCR) test.

• Phonetics and Speech Sciences
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• v.8 no.2
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• pp.73-80
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• 2016

The purpose of this study was to analyze perceptual and spectral/cepstral measurements in patients with adductor spasmodic dysphonia(ADSD). Sixty participants with gender and age matched individuals(30 ADSD and 30 controls) were recorded in reading a sentence and sustained the vowel /a/. Acoustic data were analyzed acoustically by measuring CPP, L/H ratio, mean CPP F0 and CSID, and auditory-perceptual ratings were measured using GRBAS. The main results can be summarized as below: (a) the CSID for the connected speech was significantly higher than for the sustained vowel (b) the G, R and S for the connected speech were significantly higher than for the sustained vowel (c) Spectral/cepstral parameters were significantly correlated with the perceptual parameters, and (d) the ROC analysis showed that the threshold of 13.491 for the CSID achieved a good classification for ADSD, with 86.7% sensitivity and 96.7% specificity. Spectral and cepstral analysis for the connected speech is especially meaningful on cases where perceptual analysis and clinical evaluation alone are insufficient.

• Korean Journal of Acupuncture
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• v.38 no.4
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• pp.290-307
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• 2021

Objectives : Perceptual experiences have a causal relationship with reality. If there exists something corresponding to acupoints, there should be perceptual experiences for that something. The purpose of this study is to identify and to analyze the perceptual experiences for acupoints within 『LingShu·BenShu』. Methods : First, we briefly propose a perceptual anatomy in order to describe the perceived human body parts, and their perceived directions and places. Second, we analyze the ways of identifying acupoints in the original text of 『LingShu·BenShu』. Results : From 『LingShu·BenShu』, the procedures of identifying total 64 acupoints were recognized. It was clarified that they are by way of visual and haptic explorations in body regions and partial regions. Conclusions : Perceptual explorations for acupoints follow three major principles: of gradual narrowing down, of determination of direction or place, of relative distance. At the final stages, categories of form and location are encountered by observers. The forms have either concavities or convexities. They are determinate indicators of where acupoints are, while the locations are indetermanate. Haptic forms of acupoints are newly discovered from textual analysis with perceptual anatomy. These properties will shed new light both on study of acupoints and on study of meridians.

• Journal of the Korean Data and Information Science Society
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• v.14 no.3
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• pp.501-510
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• 2003

Ordinary computer program in the context of MDS for providing separate graphs according to "individuals" is usually referred to as INDSCAL(individual difference scaling), which enables one to detect dissimilarities between "subjects". This article is concerned with applications of INDSCAL concept to MDPREF and perceptual map. Related algorithm is presented and is implemented through illustrative analysis of Korean credit card data.

• Journal of the Korean Home Economics Association
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• v.39 no.10
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• pp.55-67
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• 2001

The purpose of this study were 1) to find out the benefits sought factors and segment the customers of internet shopping mall, 2) to find out the store image factors of internet shopping mall, and 3) to analyze the internet shopping mall market using perceptual map of segmented groups. The questionnaires dealing with attribute dimension of internet shopping mall image, benefits sought, and demographic variables were selected from the previous studies or were developed for this study. The data from 319 respondents which were collected through the internet survey site was analyzed by factor analysis, cluster analysis, one-way ANOVA, and $X^2$-test. The results of this study were as follows: 1. Benefit sought by consumer in internet shopping malls was found to include six different factors: assortments of products, search efficiency, brand/fashionability, delivery convenience, promotion service and informativeness. 2. As a result of subdividing the consumers, four distinctive groups were formed on the basis of benefit factors: multi-benefit oriented group, convenience oriented group, brand oriented group and low-benefit oriented group. Demographic traits such as education and income level were proven to significantly differentiate the benefit segments. 3. In the structural components of internet shopping-malls image, product/information, service/convenience and economy were drawn from attribute dimensions. 4. 12 perceptual maps of internet shopping mall image were constructed and each ideal vector were drawn.

• Phonetics and Speech Sciences
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• v.1 no.4
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• pp.165-170
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• 2009

This study was to investigate for comparison between single rating and average ratings from multiple presentations of the same stimulus for measuring the voice quality of dysphonia using 7-point equal-appearing interval (EAI) rating scale. Overall severity of voice quality for 46 /a/ vowel stimuli (23 stimuli from dysphonia, 23 stimuli from control) was rated by 3 experienced speech-language pathologists (averaged 19 years; range = 7 to 40 years). For average ratings, each stimulus was rated five times in random order and averaged from two to five times. Although higher inter-rater reliability was found in average ratings than in single rating, there were no significant differences in rating scores between single and multiple average ratings judged by experienced listeners, suggesting that auditory perceptual ratings judged by well-trained listeners have relatively good agreement with the same stimulus across the judgment. Larger variations in perceptual ratings were observed for moderate voices than for mild or severe voices, even in the average ratings.

• Journal of Information Technology Services
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• v.7 no.2
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• pp.165-180
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• 2008

Although a number of studies concerning the performance of information system (hereafter, IS) have been performed, those in governmental organizations have rarely conducted. Moreover, there were not many that the perceptual level of individuals might have influence on the information system performance actually. This study tried to investigate the causal relationship between personal perceptual level on the operation and performance of IS, as a result of project for public innovation which deployed in a governmental organization. The targeted IS is for task management. Our survey's respondents are real users in a governmental organization. As a result of statistical analysis, the affecting factors, the perceptual level of individuals such as task process standardization, training and system education, and the active participation of manager positively affected system performance. The result of study can provide some implications to the governmental organizations who want to improve the system performance and efficiently operate their own IS for achieving the organizational goals.

• Journal of Korea Multimedia Society
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• v.22 no.8
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• pp.860-873
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• 2019

LCD backlight boosting and the integration of boosting and dimming are proposed based on image analysis to maximize perceptual image qualities and to reduce display system power. Based on the histogram of the image data, methods for selecting an image suitable for boosting and for adjusting the optimum backlight brightness are proposed. A comprehensive combined optimization method of LCD backlight boosting, dimming and bypass based on image characteristics is also described. Perceptual image quality enhancement and power consumption are evaluated based on well known image databases. Average subjective image quality is improved by 24.8%, RMS contrast is improved more than 20%, and average power consumption is reduced by 15.94% compared to conventional uniform boosting.