• Journal of the Korean Statistical Society
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• 제25권4호
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• pp.603-611
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• 1996

In this article we consider a sequential procedure for the fixed width interval estimation of the means of two mutually independent linear processes. It is shown that the proposed stopping rule is asymptotically efficient as in iid samples (cf. Robbins, Simons and Starr(l967)).

• 한국가구학회지
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• 제26권3호
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• pp.262-266
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• 2015

This study was carried out to analyze the surface color change according to the weathering time. The surface color of material was one of evaluation indexes in exposure experiment. For the purpose, accelerated weathering test was performed with wood. The weathering time level was composed with 0, 500, 1000, 1500 and 2000 hours and color difference was estimated with the color difference meter. The surface color was changed to 500 hours that lightness and redness were decreased and yellowness was increased. However it did not changed after 500 hours. It means that the surface color could be the evaluation index of deterioration of the wood but it means very little after certain time.

• 한국지역사회생활과학회지
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• 제14권3호
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• pp.111-124
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• 2003

This study is designed to understand demographic characteristics, store selection factors, difference in preferred stores which are considered to be related to store selection behaviors for clothes by college students in Yanbian, China. Questionnaire was used for measurement tools to study the subject of the thesis. Questions used for the evaluation criteria for store selection were primarily based on those previously used by the other researchers with some revision and supplementation. Each question was rated in 5 point scale, where 1 means 'not at all' and 5 means 'definitely'. A total of 50 copies of the questionnaire was passed out to college students in Yanbian from March 20 to March 25, 2001, for the preliminary study. The main study was conducted against 450 college students from May 17 to June 5, 2001 The data for the study were analyzed using SAS PC program for frequency distribution, percentage, 1 -test, and one way ANOVA. A significant difference was showed in the preferred stores between male and female students. In total, underground markets were preferred most with 41.6%, followed by markets with 40.3%. A significant difference was showed among groups regarding preferred stores based on an average monthly income, monthly expense on clothing. Three areas of 'product price', 'display and mood of the store' and 'royal store' showed a significant difference in terms of selecting stores based on an average monthly income. A significant difference was showed in only one areas(brand awareness) in selecting stores based on monthly clothing expense.

• 한국환경과학회지
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• 제31권12호
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• pp.999-1012
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• 2022

To investigate the reason for the spatial difference in PM_2.5 (Particulate Matter, < 2.5 ㎛) concentration despite a similar synoptic pattern, a synoptic analysis was performed. The data used for this study were the daily average PM_2.5 concentration and meteorological data observed from 2016 to 2020 in Busan and Seoul metropolitan areas. Synoptic pressure patterns associated with high PM_2.5 concentration episodes (greater than 35 ㎍/m³) were analyzed using K-means cluster analysis, based on the 900 hPa geopotential height of NCEP (National Centers for Environmental Prediction) FNL (Final analysis) data. The analysis identified three sub-groups related to high concentrations occurring only in Busan and Seoul metropolitan areas. Although the synoptic patterns of high PM_2.5 concentration episodes that occur independently in Busan and Seoul metropolitan areas were similar, there was a difference in the intensity of pressure gradient and its direction, which tends to be an important factor determining the movement time of pollutants. The spatial difference in PM_2.5 concentration in the Korean Peninsula is due to the difference and direction of the atmospheric pressure gradient that develops from southwest to northeast direction.

• 품질경영학회지
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• 제20권2호
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• pp.109-117
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• 1992

An inspection task largely can be seen as a job divided up into a series of visual search and classification subtasks. In these subtasks, an Inspector must performs to compare the standard references proposed in visual environments and recalled in his memory with the visual stimuli to be inspected. It means that the judgement of similarity should be demanded on inspection tasks. Therefore, the inspector's ability for the judgement of similarity and the difference similarity between inspection materials are important factors to effect on performances in inspection tasks. In this paper, to analysis the effect of these factors on inspection time, an inspection task is designed and suggested by means of computer simulator. Especially, the skin conductance responses(SCR) of subjects are measured to evaluate the complexity of tasks due to the difference of similarity between materials. In the results of experiment, the more similar or different the difference of similarity between materials is, the shorter the inspection time is because of the reduction of task complexity. And, When the inspector's cognition for similarity between materials is consistanct, the inpsection time is improved. Concludingly, the consistency of reponses for similarity judgement becomes a measurement to present the performance levels. And the information of inspection time that due to the difference of similarity between materials must be considered in planning and scheduling inspection tasks.

• 복식
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• 제61권1호
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• pp.94-108
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• 2011

The goal of this dissertation is to analyze various Romantic styles appearing in modem fashion based upon the 'Difference' theory developed by Michel Foucault. The characteristics that represent 'difference' in change of dress style are absence and resemblance. They are derived from the Foucault's interpretations of 'difference' represented in the paintings by Vel$\acute{a}$zquez and Magritte. The formative characteristics of the Romantic style dress in the 19th century are suppression of body, fixed form, volume, and ornamentation. And the aesthetic values of that are subordination, sensuality, and maternity. The formative characteristics of the Romantic style that have appeared since 1980s is analyzed according to absence and resemblance. The results are as follows: first, absence in fashion means that body is more emphasized than dress represented by omitting part or the entire of dress or using the transparent materials. In modem fashion, absence also frees the body from dress and creates ambiguity of boundaries between body and dress. Another characteristic of the absence is lessening the volume, which means the size of dress remains still big but the weight is lightened. Second, resemblance means the formative similarities between the Romantic style of the $19^{th}$ century's and that of modem fashion created through using modem technology and materials. The characteristics of the resemblance are the fixed form, lessening of volume of the dress and ornamentation. Feminine beauty inherent in the original, such as subordination, sensuality, and maternity, looses its symbolic meaning and what is created is a new combination of images and signifiant that contain no or uncertain meanings. Thus totally new and different Romantic style is created. The Romantic style in modem fashion changed into the appropriate style to the modem society under various conditions such as designer's will, postmodernism, changes of femininity and technology.

• 한국인쇄학회지
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• 제15권1호
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• pp.85-96
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• 1997

The color difference between original and printed copy is affected mainly by ink trapping and optical properties of overprinted ink layer. Since the general expression itself about ink trapping is affected also by the optical properties, the analysis of color difference using the ink trapping only cannot be certain. This study will show a new approaching method for optical analysis of spectral reflectance and the effect of printing sequence on color difference in multi-color overprints under the condition of excluding completely the ink trapping problems by means of using transparent film as a substrate.

• 대한가정학회지
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• 제33권6호
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• pp.225-244
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• 1995

The purpose of this study is to see difference based on age, sex, sociometric ststus for perceived competence of children and difference about perception of responsibilities degree of parents of these children. the content of study as follows. 1. How is the difference about perceived competence of children based on age, sex, sociometric status. 2. How is the difference about perception of responsibilities of children based on age, sex, sociometric status. 3. How is the relationship between father and mother. The subject of this study is children and their parents of 126 persons of the third grade, sixth grade of S elementary school, the second grade of S middle school, the second grade of S girls' middle school which are located in Pusan city. This study used a peer nomination among sociometric assesment method as sociolity assessment means, self-perception profile for children of Harter(1985) as perceived competence assessment means of children and used self-perception profile for children which amends fits for parents. the collected data are managed by SPSS/PC+ program. We analyze three-way ANOVA to verify study question No, one, two, analyze t-verification and Pearson's product moment correlations to verify study question No. three. The result of this study as follows. First, in investigating difference about perceived compretence of children based on age, sex, sociometric status, we can see that children perceive high, self-ability for low ages. Also, boys than girls, popular children than rejected children, neglected children perceive high self-ability. Second, in investigating difference about perception of responsibilities of children based on age, sex, sociometric status, we can see that mother perceive responsibilities in learning sphere, exercise sphere, the whole self-value sphere and father perceive responsibility only in social sphere. Third, in investigating relation between perception of responsibilities of father and mother, this shows that difference between perception of responsibilities of father and mother is not showed ane have (+) interrelation of r=.46(P<.001) between perception of responsibilities of father and perception of responsibilities of mother.

• 한국도서관정보학회지
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• 제20권
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• pp.31-60
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• 1993

The purpose of this study is to analyze quantitatively the use of statistics, especially inferential statistics, in library and information science. Thus this study compared the use of statistics in library and information science with it in social work and education. The results of this study are as follows: First, the result is that, when the proportions of articles in each of the three categories of use are compared, library and information science is deficient in the use of inferential statistics and unusually productive of articles in 'No Statistics' category and 'Descriptive Statistics Only' category. Second, ANOVA showed no significant difference in the means for number of articles with no statistics and for articles with descriptive statistics only, but did show a statistically significant difference for the means for number of articles with inferential statistics. That is, the use of inferential statistics in library and information science was very less than the other subject areas. Third, a comparison of the numbers of various inferential statistics for each of the three subject areas indicated that the differences were not significant. This fact means that the quality of inferential statistics used in library and information science was similar to the other subjects.

• 말소리와 음성과학
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• 제1권2호
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• pp.63-73
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• 2009

The present study was conducted to explore how the processing of lexical ambiguity between homonymy and polysemy differs from each other, and whether the representation of mental lexicon was separated from each lexical ambiguity by a semantic priming paradigm. Homonymy (M1 means the literal meaning of '사과', i.e. apple and M2 means another literal meaning of '사과', i.e. apologize) was used in Experiment I, and polysemy (M2 means the literal meaning of '바람', i.e. wind and M2 means the figurative meaning of '바람', i.e. wanton) was used in Experiment 2. The results of both experiments showed that a significant semantic priming effect occurs regardless of the type of ambiguities (homonymy and polysemy) and the difference of their semantic processes. However, the semantic priming effect for polysemy was larger than that for homonymy. This result supports the hypothesis that the semantic process of homonymy is different from that of polysemy.