• Title/Summary/Keyword: Multi-dimensional scaling analysis

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Facial Image Type Classification and Shape Differences focus on 20s Korean Women (20대 한국여성의 얼굴이미지 유형과 형태적 특성)

  • Baek, Kyoung-Jin;Kim, Young-In
    • Journal of the Korean Society of Costume
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    • v.64 no.3
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    • pp.62-76
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    • 2014
  • The purpose of this study is to classify the facial images and analyze shape characteristics of Korean women in their 20s. Previous research and survey were used for the study, the surveys targeted 220 university students in their 20s. The subjects of the experiment were 20-24 year-old Korean women. SPSS 12.0 statistics program was used to analyze the results, and factor analysis, Cronbach's ${\alpha}$ reliability analysis, and multidimensional scaling(MDS) were executed. The results of the study are as follows: First, the facial image types of Korean women in their 20s were classified into 4 categories as 'Youthfulness', 'Classiness', 'Friendliness', and 'Activeness'. Second, the multi-dimensional scaling method was performed and two orthogonal dimensions for the facial image of the Korean women were suggested: strong - soft and classy-friendly. Third, by analyzing the basic statistics concerning the structural characteristics of facial image of Korean women, there were differences in structural characteristics that form the facial images. Especially, significant difference appeared in items related forehead, eyebrows, eyes and jaw.

A Study on the Multi-purpose Uses of Special Classrooms and Supporting Facilities At medium and Small Size Elementary schools (중소규모 초등학교에서 특별교실 및 지원시설의 다목적화에 관한 연구)

  • Lee, Ho-Chin;Park, Ik-Sun
    • The Journal of Sustainable Design and Educational Environment Research
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    • v.2 no.1
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    • pp.49-67
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    • 2002
  • The purpose of this study is to be able to accept various educational processes with a few classrooms by multi-purpose uses special classrooms and supporting facilities of medium and small sized elementary school. For this purpose, I had divided into three parts by analyzing correlation of each classrooms according to the types of lessons, necessary equipment, building equipment environment, the need of users. The types of lessons and necessary facilities make the scope of each classrooms throughout Correspondence Analysis, and the need of users that is the recognized similarity between each rooms by teachers, make the scope by using Multi-Dimensional Scaling(MDS). Establish the final scope by combining and analyzing the already classified rooms by each factor. Lastly, calculate the numbers of rooms by applying the usage rate of each classified classroom and examine the standard of planning and the example of composition for the multi-purpose uses of combined room.

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Gap: A Study on the Influence of New Measurement Method on Consumers' Decision Making

  • Yang, Hoe-Chang;Cho, Hee-Young;Kim, Young-Ei
    • Journal of Distribution Science
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    • v.15 no.1
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    • pp.51-56
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    • 2017
  • Purpose - The study verified the effects of consumers' knowledge perception upon word-of-mouth intention and purchase intention of consumers who were exposed to a lot of information, and examined consumer's behavior from multi-dimensional points of view. Research design, data, and methodology - The study conducted the test of difference between consumer's cognition on importance and satisfaction of HMR product by gap of HMR (Home Meal Replacement) product for IPA analysis. The consumer's reliability and words-of-mouth were measured by the questionnaire method with 4 questions according to Likert 7-point scale. Conversion into z-score removed the difference of variables. Results - The causal relation model for importance, satisfaction and gap, not relying upon multi-dimensional scaling and others, could construct causal relation model to give implications. Difference (d) of the products could lessen consumer's reliability to increase consumer's knowledge perception, word-of-mouth intention, knowledge perception, and purchase intention. Therefore, enterprises should make an effort to lessen consumers' complaint for the products and to elevate consumers' reliability. Enterprises also try to give consumers exact information and to promote purchase intention. Conclusions - Difference (d) of consumers' complaint and/or disappointment decreased consumers' reliability to increase knowledge perception. Enterprises should supply consumers with products according to their requirements to minimize the gap and to give them proper information.

Direct ECC Bypass Phenomena in the MIDAS Test Facility During LBLOCA Reflood Phase

  • B.J. Yun;T.S. Kwon;D.J. Euh;I.C. Chu;Park, W.M.;C.H. Song;Park, J.K.
    • Nuclear Engineering and Technology
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    • v.34 no.5
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    • pp.421-432
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    • 2002
  • As one of the advanced design features of the APR1400, direct vessel injection (DVI) system is being considered instead of conventional cold leg injection (CLI) system. It is known that the DVI system greatly enhances the reliability of the emergency core cooling (ECC) system. However, there is still a dispute on its performance in terms of water delivery to the reactor core during the reflood phase of a large-break loss-of-coolant accident (LOCA). Thus, experimental validation is under progress. In this paper, test results of direct ECC bypass performed in the steam-water test facility tailed MIDAS (Multi-dimensional Investigation in Downcomer Annulus Simulation) are presented. The test condition is determined, based on the preliminary analysis of TRAC code, by applying the ‘modified linear scaling method’with the l/4.93 length scale . From the tests, ECC direct bypass fraction, steam condensation rate and information on the flow distribution in the upper annulus downcomer region are obtained.

Development of Evaluation Dimensions regarding the Image of Clothing Materials (의류 소재의 이미지 평가 차원 개발에 관한 연구)

  • 신혜원;이정순
    • Journal of the Korean Society of Clothing and Textiles
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    • v.26 no.11
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    • pp.1638-1648
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    • 2002
  • In this study, we classified adjectives to represent the image of clothing materials as the fundamental process for evaluation of the images on various fabrics and reviewed hierarchy and evaluation dimensions regarding the image of clothing materials. The adjectives to express the image of clothing materials were extracted from Fashion Magazine and Fashion Trend Book The similarity among adjectives was measured by pair-wise comparison without showing fabrics. From the result of the cluster analysis, 87 adjectives were finally extracted through the integrated processing of the adjectives with similar meaning and a close distance. Through the cluster analysis, the hierarchy of the clothing material images was examined. The clothing material images were classified into 12 primary sub-clusters such as ‘feminine', ‘warm', ‘neat', ‘classical', ‘pastoral.' ‘casual', ‘modern'. ‘ambiguous', ‘primitive', masculine', ‘abundant', and ‘arranged'. The dimensions evaluating the clothing material images were also developed using the multi-dimensional scaling method. A 4-dimensions and 8-axes system was established, which is composed of ‘masculine-feminine', ‘new-old', ‘casual-classical', and ‘ambiguous-arranged' images.

Commercial Airline Pilots' Risk Perception of Emergency Flight Situations (민간항공 조종사의 비정상 운항 상황에 대한 위험 지각)

  • Sohn, Young-Woo;Kim, Yong-Seok;Kim, Chan;Park, Su-Ae
    • Journal of the Korean Society for Aviation and Aeronautics
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    • v.15 no.3
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    • pp.46-56
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    • 2007
  • This research examined how pilots perceive risks when faced with emergency flight situations. We had 116 commercial airline pilots evaluate riskiness of 39 non-routine flight situations. The pilots' risk perception was analyzed as a function of their position (captain vs. first officer), expertise (expert vs. novice), and military flight experience (with vs. without military experience). Results showed that captains evaluated potential-risk situations and low-risk situations more dangerous than first officers. However, there were no differences between experts and novices, and between pilots having military flight experience and pilots not having military flight experience in risk perception. The analysis of multi-dimensional scaling revealed that the pilots used controllability as a key dimension for evaluating riskiness, though the other dimensions they used varied with their position, expertise, and military flight experience.

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A Study on the Image Similarity and the Preference for Clothing Stores in Giant Discount Chains (대형할인점의 의류점포 이미지 유사성 및 선호도 평가 연구)

  • Yang, Lee-Na
    • Journal of the Korea Fashion and Costume Design Association
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    • v.13 no.4
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    • pp.1-14
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    • 2011
  • This study is to analyze the image similarity and the preference for clothing stores in the 6 giant discount chains in Daejeon. The survey for this study was based on the questionnaires accomplished by 257 people through the multidimensional scaling. The results are as follows First, 6 clothing stores had 4 image groups located in 4 coordinates. CW(Costco Wholesale), NH(Nonghyup Hanaro-Mart), and SZ(Save Zone) had a similar distinct image, while HP(Home Plus) and EM(E-Mart), and LM(Lotte-Malt) also had similar differentiated images. Second, according to the preference analysis in terms of demographic characteristic, NH had the lowest preference from the people of all the different ages, while SZ had the highest. HP, EM, CW, and LM had their own preference in the following order: in the thirties, forties, and over fifties. Meanwhile, relatively, SZ is preferred by the people in their twenties and people over age fifty liked CW more. Third, according to the analysis of the preference for clothing stores in the giant discount chains in terms of educational background, clothing consumers who had high school degrees preferred NH and LM, people with 2 year college degrees liked HP and EM more, while 4-year college graduates and people with higher education had preference for SZ. Finally, according to the preference analysis in terms of income level, higher income groups preferred SZ and CW and lower income groups liked LH and LM more, while HP and EM had high preference from all kinds of income groups.

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Regional Categorization of Gyeonggi Province for Fine Dust Management (경기도 지역 미세먼지 관리를 위한 권역 범주화 연구)

  • Lee, Su-Min;Lee, Tae-Jung;Oh, Jongmin;Kim, Sang-Cheol;Jo, Young-Min
    • Journal of Environmental Impact Assessment
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    • v.30 no.4
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    • pp.237-246
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    • 2021
  • The similarity of hourly PM10 and PM2.5 concentration profiles of the atmospheric monitoring stations in Gyeonggi-do was evaluated through the multilateral analysis between stations. The existing category for most stations in the regions shows relatively low Pearson correlation values of 0.68 and 0.7 for PM10 and PM2.5 on average respectively, and some monitoring stations revealed high relationships over 0.8 to other regions. Since the current regions are mainly categorized by cluster analysis based on the number of occurrence of high concentration events and geological factors, it is necessary to reclassify them by concentration characteristics for precise fine dust management. In accordance, multi-dimensional scaling being able to visualize could categorize the regions based on regional emission contribution rate and hourly fine dust concentration. As a result of the current analysis, PM10 and PM2.5 could be reclassified into five regions and fourregions, respectively.

Structural Analysis of Consumption Emotions on Apparel Products (의류제품의 소비감정에 대한 구조 분석)

  • 박은주;소귀숙
    • The Research Journal of the Costume Culture
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    • v.11 no.2
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    • pp.219-230
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    • 2003
  • The purpose of this study was to analyze the structure of consumption emotions that consumers experienced in the process of consuming apparel products. Data was collected from 144 female college students living in Busan, and analyzed by salience, diversity, H-index, Clamor's V, and multi-dimensional scaling. The results showed as following; 1. The consumption emotions related to apparel products appeared three dimensions; ‘Relaxed-tense’ dimension, ‘Pleasant-unpleasant’ dimension, and ‘Outward-inward’ dimension. Considering elements of consumption system, the dimensions of consumption emotions in relation to apparel performances were 'Pleasant-unpleasant' and ‘Outward-inward’. The dimensions of consumption emotions experienced in usage situations were ‘Relaxed-tense’ and ‘pleasant-unpleasant’. The consumption emotions related to specific products were composed of ‘Pleasant-unpleasant’ dimension and ‘Outward-inward’ dimension. 2. As the multi-dimension map of this study has much space, it suggested that the scope of consumption emotions related to apparel products was more limited than those related to general situations and products. 3. The structure of consumption emotions in relation to apparel performances appeared to be bisected, while those related to usage situations showed relatively to be dispersed. 4. Although Pleasant-unpleasant dimension was consistent with results of prestudies, the dimensions of ‘Relaxed-tense’ and ‘Outward-inward’ were newly confirmed as the dimensions of consumption emotions related to apparel products. Therefore, consumer's consumption emotions of apparel products were composed of three dimensions, tended to be more limited than those of general consumption situations and products, and differentiated across apparel performances, usage situation, and specific products.

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A Study on the Structural Analysis for Fatal Industrial Accidents using Multivariate Analysis Methods (다변량 분석기법을 활용한 중대재해 구조분석에 관한 연구)

  • Im, Jeong-Eun;Lee, Hong-Cheol;Park, Seong-Jun
    • Journal of the Ergonomics Society of Korea
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    • v.23 no.4
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    • pp.23-34
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    • 2004
  • The importance of the industrial safety has been growing gradually as well as the prevention activities on industrial accidents. Industrial accident rates have been decreasing by the prevention activities. However, the fatal industrial accidents such as the death tend to increase and risk per accident has increased. The previous studies on the industrial accidents focus on the entire accidents. However, these studies are lacking for the fatal industrial accidents such as the death. The purpose of this paper is to analyze the characteristics and trend of death which occurred by industrial accident, based on the real data of deaths collected last 5 years from 1999 to 2003 in korea. This paper suggests a analysis method using MDS(MultiDimensional Scaling) that considers accidents variables and properties simultaneously. We evaluate MDPREF (Multidimensional Analysis of Preference Data), one of the MDS analysis, to know the relations between the type of industry and region as well as the type of industry and occupation. This paper finds the type of industry which has high possibilities of death by regional groups. In addition, we find the type of occupation which has high possibilities of death by the type of industry. These findings indicate that industrial classification should be differently controled according to type of occupation and region.