• Title, Summary, Keyword: cluster analysis

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Investigation on the Korean Cyclists' Body Type Through Anthropometric Measurements (사이클 선수들의 체형 특성에 관한 연구)

  • 최미성;정성필
    • Journal of the Korean Society of Clothing and Textiles
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    • v.28 no.7
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    • pp.1019-1028
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    • 2004
  • The purpose of this study was to compare the body measurements of cyclists and non-cyclists and to classify cyclists' body types to offer basic information for the bicycle apparel manufacturer in Korea. The anthropometric data was collected including both direct and indirect measurements of 81 cyclists (40 female, 41 male) aged from 19 to 24. Anthropometric measurements were analyzed using percentiles, T-test, factor and cluster analysis. The results were as follows; Comparison of anthropomeoic data between cyclist and non-cyclist was to clarify that cyclists have bigger size than non-cyclists; especially the thigh circumference shows big differences. As the result of factor analysis, 5 factors, which explain 74% of variance, were extracted from all items for male and female cyclists. The results of cluster analysis classified body types into 3 groups. Cluster 1 among three female cyclist groups has biggest torso and had an erect back. Cluster 2 has small size among three female group and drooping shoulders. Cluster 3 has the bended forward shoulders and shows the protrusion back. In case of male cyclists, cluster 1 has thin body type owing to big height measurements and small girth measurements. Cluster 2 among three male groups has the biggest torso and thigh circumference. Cluster 3 has big forward angle of shoulders and shows the protrusion of the back as female cyclist.

Allergen Sensitization Pattern by Sex: A Cluster Analysis in Korea

  • Ohn, Jungyoon;Paik, Seung Hwan;Doh, Eun Jin;Park, Hyun-sun;Yoon, Hyun-Sun;Cho, Soyun
    • Annals of dermatology
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    • v.29 no.6
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    • pp.735-741
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    • 2017
  • Background: Allergens tend to sensitize simultaneously. Etiology of this phenomenon has been suggested to be allergen cross-reactivity or concurrent exposure. However, little is known about specific allergen sensitization patterns. Objective: To investigate the allergen sensitization characteristics according to gender. Methods: Multiple allergen simultaneous test (MAST) is widely used as a screening tool for detecting allergen sensitization in dermatologic clinics. We retrospectively reviewed the medical records of patients with MAST results between 2008 and 2014 in our Department of Dermatology. A cluster analysis was performed to elucidate the allergen-specific immunoglobulin (Ig)E cluster pattern. Results: The results of MAST (39 allergen-specific IgEs) from 4,360 cases were analyzed. By cluster analysis, 39 items were grouped into 8 clusters. Each cluster had characteristic features. When compared with female, the male group tended to be sensitized more frequently to all tested allergens, except for fungus allergens cluster. Conclusion: The cluster and comparative analysis results demonstrate that the allergen sensitization is clustered, manifesting allergen similarity or co-exposure. Only the fungus cluster allergens tend to sensitize female group more frequently than male group.

Sushi Consumption Behavior of Koreans according to Food-related Lifestyle Type among Consumers (외식 소비자의 식생활 라이프스타일에 따른 초밥 소비행동 분석)

  • Lee, Kyung-Won;Chung, Hee-Chung;Cho, Mi-Sook
    • Journal of the Korean Society of Food Culture
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    • v.26 no.6
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    • pp.574-582
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    • 2011
  • The aim of this study was to classify Korean consumers based on their food-related lifestyle type, and to investigate the relationship between sushi consumption and food-related lifestyle type. Self-reported questionnaires were completed by 300 Korean adults. The SPSS 18.0 program was used to analyze the samples. Data was analyzed by frequency, descriptive factor, reliability, cluster analysis, ANOVA, and chi-square test. A factor analysis extracted four factors comprising foodrelated lifestyle, which we named Health-seeking (factor 1), Taste-seeking (factor 2), Convenience-seeking (factor 3), and Economy-seeking (factor 4). According to a cluster analysis based on those four factors, consumers were classified into three clusters. Cluster 1 was the Taste and Health-seeking cluster, Cluster 2 was the Convenience-seeking cluster, and Cluster 3 was the Passive Eating Habits cluster. The results also indicated that the selection attributes of each cluster were significantly different in terms of perception, the global state of sushi, sushi preference, frequency, companions, place of sushi consumption, and preference for different sushi sub-ingredients. Based on these results, consumer characteristics in the sushi market are discussed.

Comparison of Body Measurements between Korean and the U. S. Women Aged Over 55

  • Choi, Mee-Sung;Susan, P.Ashdown;Cho, Hoon-Jeong
    • Journal of Fashion Business
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    • v.6 no.6
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    • pp.34-42
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    • 2002
  • Anthropometric studies and multicultural research on body changes are fundamental and important data for domestic apparel industry and for globalization of women's clothing marketing. The objective of this study is to compare the general body measurements and shoulder angles of Korean and U. S. elderly women to supply basic data for the apparel design. The anthropometric data was collected including both direct and indirect measurements of 272 women over the age of 55 in Korean (subject = 123) and the U.S (subject = 149). The statistical methods used for the analysis of measurement data are the factor and cluster analysis respectively. The results of the factor analysis indicated that 5 factors can be extracted in Korean and 4 factors can be extracted in the U. S. from 15 body measurements to explain the variance. The results of cluster analysis by shoulder slope angle and forward displacement of the shoulder of Korean and the U. S. women classified them in three groups, cluster 1, cluster 2 and cluster 3 respectively.

Purchasing Satisfaction of Apparels on Shopping Orientation in Daegu (의복쇼핑성향과 의복구매만족과의 관계 연구 - 대구지역 여성소비자들을 대상으로 -)

  • 최태용;박화순;조은영
    • Journal of the Korean Home Economics Association
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    • v.40 no.8
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    • pp.123-135
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    • 2002
  • The purpose of this study is to examine the relationship between shopping orientation and purchasing satisfaction of apparels. To achieve the purpose, this study was carried out by means of questionnaires with female consumers aged from 20s to 50s in Daegu. The data were analysed by the frequency analysis, percentage, reliability test, factor analysis, Pearson's correlation analysis, cluster analysis, one-way ANOVA and Duncan's multiple range analysis. The statistical package for social science 9.0 for Window was used for the statistical processing of the data. The result of this study is summarized as follows. 1. To examine factors which construct female consumers' shopping orientation for apparels, a factor analysis was done, therefore, which obtained 6 factors. Also A factor analysis was done to examine the motivative factors of satisfaction with purchased apparels, 6 factors were obtained. 2. Based on the average score of shopping-orientation factors for apparels, a cluster analysis was done and it was classified into 3 clusters. There were differences in purchasing satisfaction of purchased apparels between the 3 clusters. 3. The differences in variety, shopping convenience, dignity, brand & preference, and convenient selection between the clusters were entirely p<0.001 which were very significant. There were no differences in the quality and service factors between the brand-/practicality-oriented cluster and entertainment-oriented cluster. With other factors, entertainment-oriented cluster was most satisfied than brand-/ practicality oriented cluster. But, self-reliance-oriented cluster was lowest purchasing satisfaction of apparels.

Dietary Patterns and Health Behaviors of Hypertensive Korean Adults

  • Kim, Youngok;Lee, Soon-Young
    • Preventive Nutrition and Food Science
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    • v.7 no.2
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    • pp.201-206
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    • 2002
  • Findings from European and American studies have indicated such health behaviors as smoking, drinking, lack of exercise, and insufficient intake of grains, fruits and vegetables as risk factors for hypertension. However, because dietary pattern and health behaviors of Korean differ from people of other countries, the risk factors for Koreans could be different. Therefore, the aim of this study was to identify food consumption patterns and health behavior characteristics of Korean hypertensive adults. Data on food consumptions and other health behaviors such as smoking, drinking, and exercise together with development of hypertension were collected from 597 persons aged 20 to 69 years in a local community. The first stage of analysis utilized cluster analysis to aggregate individuals into different health behavior and food consumption groups. Four health behavior groups were characterized by passive cluster, smoker cluster, fitness cluster and drinker cluster. Food consumption patterns of the subjects were also aggregated into 4 different clusters: dairy cluster, grain & vegetable cluster, fruit cluster, and fish & meat cluster. Then univariate analysis was followed to identify the variables associated with hypertension. The final stage of analysis was the identification of the relative importance of the variables selected from the univariate analysis on hypertension, using multiple logistic analysis. The results showed that heavy drinking was the most significant health behavior associated hypertension, which was similar to the findings in European and American studies. However, unlike the findings from foreign studies, grain and vegetable consumption appeared to be a risk factor for hypertension. A possible reason for the contradictory results between Korean and Western studies may be the dependence of Koreans on white rice as the major staple food, and/or the frequent consumption of salted vegetables, rather than fresh vegetables as is customary in Europe and America.

A Study on Student Satisfaction with Educational Environment in a Cooking and Food Service Program (조리.외식관련 대학생들의 교육환경 만족도에 관한 연구)

  • Lee, Jong-Ho
    • Culinary science and hospitality research
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    • v.17 no.2
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    • pp.74-84
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    • 2011
  • The purpose of this study is to understand the relationship between educational environment services offered and student satisfaction with them. A survey was conducted to 314 students in a cooking and food service program. To achieve the purpose of this study, SPSS 17.0, a statistics program, was used for a descriptive analysis, a frequency analysis, a factor analysis, a multiple regression analysis, a cluster analysis and a One-Way ANOVA analysis. The hypothesis test result of the effect of educational environment services on satisfaction showed that there was a partially significant effect in satisfaction with facilities and lecturers(p<0.01) as well as administrative services (p<0.01). In the cluster analysis of educational environment services, cluster 1 was classified as a mistry cluster, cluster 2 as a satisfied cluster, cluster 3 as a dissatisfied cluster and cluster 4 as a positive cluster. They showed a statistically meaningful result in the one-way ANOV A(p<0.01).

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Comparison of Ginseng Product Consumers Based on Processed Type of Ginseng

  • Lee, Dongmin;Yu, Seulgi;Moon, Junghoon
    • Agribusiness and Information Management
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    • v.7 no.1
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    • pp.21-36
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    • 2015
  • This study aims to analyze the differences of ginseng product consumers and segment Korean fresh ginseng and red ginseng root markets based on attributes for the purchase. As a result of analyzing survey data, the red ginseng root consumers had different aspects from fresh ginseng consumers. According to the result of cluster analysis, the fresh ginseng consumers were subdivided into three segments (safety-oriented consumption cluster, label centered consumption cluster, and high involvement consumption cluster), while the red ginseng root consumers were subdivided into four segments (convenience-oriented consumption cluster, high involvement consumption cluster, raw material's safety-oriented cluster, and raw material's information importance cluster). ANOVA and Crosstab were conducted to investigate characteristics of each cluster.

A Study on Selecting the Key Research Areas in Nano-technology Field in Korea: An Application of Technology Cluster Analysis in National R&D Program (한국의 나노기술 분야에서 핵심 연구영역 도출에 관한 연구 -국가 연구개발사업 수준에서 기술군집분석의 적용-)

  • 이용길;이세준;이재영
    • Journal of Korea Technology Innovation Society
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    • v.6 no.2
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    • pp.175-190
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    • 2003
  • This paper deals with the methods for selecting the key research areas, which fit for the large, multi-disciplinary, and long-term programs by making use of Technology Cluster Analysis. This method is applied to mano-technology field at the level of national R&D program. 56 nano-technologies are analyzed and grouped into three main clusters based on the survey data from 180 experts. Three main clusters are \circled1 naro-materials related cluster, \circled2 naro-device related cluster, and \circled3 naro-bio related cluster. These three clusters are coincided with the focused areas of nano-technology in Korea. Each cluster is analyzed in view of its competence position.

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An Analysis of Junior High School Girls' Breast Shape by Plane Photogrammetry (평면사진계측에 의한 유방형태 분석)

  • 김경숙
    • Journal of the Korean Home Economics Association
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    • v.31 no.4
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    • pp.209-214
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    • 1993
  • The purpose of this study is to provide the fundamental data for a dummy design used I read-made clothing and underwear production I terms of a pattern of breast types based o their morphological characteristics in accordance with different pattern of breast types. The breast's side and frontal views of the breast were measured with 90 junior high school girls of age between 13 and 16 residing in the urban area of Seoul using the plan photogrammetry. 1. The correlation between the side view body measurement and the breast's side and front view were analyzed by using the canonical correlation analysis, whereby the side view body measurement is showing a 39% of the breast's side view and frontal view. 2. The breast's side and front view has been classified by cluster analysis. The results of custer analysis for the breast's side and front view would be turned out the four cluster. 1) The cluster Ⅰ, The most volumed breast's side view.(20%) 2) The cluster Ⅱ, The fastest growing breast's front view.(38%) 3) The cluster Ⅲ, the latest growing breast.(3%) 4) The cluster Ⅳ, the middle degree growing breast.(39%)

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