• Title/Summary/Keyword: cluster fitness

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Parallel Optimal Power Flow Using PC Clustering (PC 클러스터링을 이용한 병렬 최적조류계산에 관한 연구)

  • Kim, Cheol-Hong;Mun, Kyeong-Jun;Kim, Hyung-Su;Park, J.H.;Kim, Jin-Ho;Lee, Hwa-Seok
    • Proceedings of the KIEE Conference
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    • 2004.11b
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    • pp.190-193
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    • 2004
  • Optimal Power Flow (OPF) is becoming more and more important in the deregulation environment of power pool and there is an urgent need of faster solution technique for on-line application. So this paper presents parallel genetic algorithm-tap search for the solution of the OPF. The control variables modeled unit active power outputs, generator-bus voltage magnitudes and transformer-tap settings. A number of functional operating constraints, such as branch flow limits, load bus boltage magnitude limits and generator reactive capabilities are included as penalties in the fitness function. In parallel GA-TS, GA operators are executed for each process. If best fitness of the GA is not changed for several generations, TS operators are executed for the upper three populations to enhance the local searching capabilities. With migration operation, best string of each node is transferred to the neighboring node after predetermined iterations are executed. For parallel computing, we developed a PC-cluster system consisting of 8 PCs. Each PC employs the 2 GHz Pentium IV CPU and is connected with others through ethernet switch based fast ethernet. To show the usefulness of the proposed method, developed algorithm has been tested and compared on an IEEE 30-bus system in the reference paper. From the simulation results, we can find that the proposed algorithm is efficient for the OPF.

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Traffic Safety Countermeasures According to the Accident Area Patterns and Impact Factor Analysis of the Large-scale Traffic Accident Locations (대형 교통사고 발생지점 유형화와 영향요인 분석에 따른 교통안전대책 방안에 관한 연구)

  • Kim, Bong-Gi;Jeong, Heon-Yeong;Go, Sang-Seon
    • Journal of Korean Society of Transportation
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    • v.24 no.1 s.87
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    • pp.39-52
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    • 2006
  • This study divided the large-scale traffic accident locations into its own characteristics by using Cluster Analysis. Also, Quantification II and Classification and Regression Tree methods were used enabling evaluation for the amount of affecting influence by the crash type. After these analyses, we tested the fitness of the results and suggested the simplification of the quantification index. With the results from the discussed procedure, obvious differences were observed by groups according to the characteristics of crash type from the Discrimination and Classification analysis of divided four groups. Thus, measures and supplementary measures for the traffic accidents could be suggested in groups systematically. However, a lot of missing values in variables caused a huge loss of data and made this study difficult for more detailed analysis, With this difficulty. recording mandatory log files with a standardized format is also recommended to Prevent this Problem in advance.

Analysis on Lower Body Type and 3D Virtual Appearance Evaluation of Boots cut Jeans for Women (성인여성의 하반신 체형분석 및 부츠 컷 청바지의 가상 외관평가)

  • Choi, Jin;Do, Wol-Hee
    • Journal of the Korean Home Economics Association
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    • v.46 no.2
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    • pp.73-83
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    • 2008
  • The focus of this research was concerned with studying lower body type for Korean adult females. information from the measuring values based on research on the physical standard of the nation(2004) were summarized, in addition a factor of the need for appropriate fit in boots cut jean wear, basic lower body part applying to each item had to be taken into consideration to enhance sizing suitability. The body type are classified into three kinds by means of factor analysis and cluster analysis. Type 1 referred to the fat lower body, having thick rounding waist. compared to other body parts, and long leg according to its proportion. Type 2 represented medium stature but with a large skeleton structure of lower body. Type 3 represented a the long lower body having slender rounding waist. This study was attempted to evaluate the fitness of boots cut jeans pattern for women using 3D Clothes Modeling Software.

An Empirical Study on the Distribution Park Strategy for Logistics-Hub in Northeast Asia (동북아 물류거점화를 위한 항만배후부지 구축전략에 관한 실증연구)

  • Yoon Byeong-Goo;Kwak Kyu-Seok;Ahn Ki-Myung;Kim Myung-Jae
    • Journal of Navigation and Port Research
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    • v.29 no.10 s.106
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    • pp.897-906
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    • 2005
  • The purpose of this research is to verify the strategic fitness and relevance of the distribution park for a hub port in Northeast Asia and to find a method to be a hub-port with a competitive edge. The strategic factor of distribution park development are policy, methodology and promotion method So these factors are analysed by structural equation model. The essential results of the research show that distribution park should be actually developed to produce value-added and to be port cluster.

Classification and Characteristics of the Body Shape for Early Adolescent Boys (청소년 전기 남학생의 체형 유형화 및 유형별 체형 특성에 관한 연구)

  • Kim Kyung-A;Suh Mi-A
    • The Research Journal of the Costume Culture
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    • v.13 no.3 s.56
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    • pp.344-360
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    • 2005
  • The purpose of the study is to identify the physical characteristics of early adolescent boys, to classify body shapes by physical characteristic. The subjects were 549 boys in the capital area. Their body shapes were identified and classified based on 47 anthropometric measurements, 43 photographic measurements and 10 indexed measurements. For data analysis were performed descriptive statistics, factor analysis, cluster analysis, ANOVA and Duncan test using SPSS Ver. 10. According to the result of extracting factors indicating the characteristics of body shape, horizontal size, vertical length, lateral posture, the lateral shape of the abdomen and the hip, the shape of the back protrusion, the front shape of the trunk and was the shape of the shoulders. According to the result of classifying body shapes, four types of shape - T(Tall) type, P(Petite) type, L(Large) type and R(Regular) type were identified. The results of this study are expected to contribute to planning sizes according to the type of body shape and improving the fitness of ready-made clothes in apparel and school uniform manufacturers.

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An Empirical Study on the Distribution Park Strategy for Northeast Asia Logistics-Hub (동북아(東北亞) 물류거점화(物流據點化)를 위한 항만배후부지(港灣背後敷地) 구축전략(構築戰略)에 관(關)한 실증연구(實證硏究))

  • Yun, Byeong-Goo;Kwak, Kyu-Seok;Ahn, Ki-Myung
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • v.29 no.1
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    • pp.465-470
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    • 2005
  • The purpose of this research is to verify the strategic fitness and relevance of the distribution park for hub port in Northeast Asia and to find a method to be a hub-port with a competitive edge. The Strategic factor of distribution park development are policy, methodology and promotion method. So these factors are analysed by structural equation model. The essential results of the research show that distribution park should be actually developed to product value-added and connected to industry park to be port cluster.

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Health Blief Model-based intervention to improve nutritional behavior among elderly women

  • Iranagh, Jamileh Amirzadeh;Rahman, Hejar Abdul;Motalebi, Seyedeh Ameneh
    • Nutrition Research and Practice
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    • v.10 no.3
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    • pp.352-358
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    • 2016
  • BACKGROUND/OBJECTIVES: Nutrition is a determinant factor of health in elderly people. Independent living in elderly people can be maintained or enhanced by improvement of nutritional behavior. Hence, the present study was conducted to determine the impact of Health Belief Model (HBM)-based intervention on the nutritional behavior of elderly women. SUBJECTS/METHODS: Cluster-random sampling was used to assess the sample of this clinical trial study. The participants of this study attended a 12-week nutrition education program consisting of two (2) sessions per week. There was also a follow-up for another three (3) months. Smart PLS 3.5 and SPSS 19 were used for structural equation modeling, determination of model fitness, and hypotheses testing. RESULTS: The findings indicate that intervention had a significant effect on knowledge improvement as well as the behavior of elderly women. The model explained 5 to 70% of the variance in nutritional behavior. In addition, nutritional behavior was positively affected by the HBM constructs comprised of perceived susceptibility, self-efficacy, perceived benefits, and barriers after the intervention program. CONCLUSION: The results of this study show that HBM-based educational intervention has a significant effect in improving nutritional knowledge and behavior among elderly women.

An Analysis on 3D Face Measurements of Korean Women for Suitable Facial Sheet Masks' Size (Facial Sheet Masks의 사이즈 적합성을 위한 한국 여성의 3차원 얼굴 데이터 분석)

  • Moon, Jeehyun;Jeon, Eunkyung
    • Journal of the Korean Society of Clothing and Textiles
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    • v.43 no.6
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    • pp.930-940
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    • 2019
  • This study analyzes the facial data required for sheet design in order to pursue the facial compatibility of disposable sheets used in facial mask products that are increasing in popularity as self-care methods. The subjects of the study were 23 facial measurements of 1,001 women in their 20s to 60s from Size Korea's 6th 3D data. Through factor analysis, sheet-related facial measurements were collected into six factors included in the vertical length of each part of the face: length of face surface from the ear to each part of the face, width of eyes, nose, lips, length of nose, vertical length of lower face, width of the head and width of chin. Three sheet face types were classified using six factor scores as variables, and the characteristics of each type differed according to age group. As a result of the discriminant analysis to identify the dimension items that classify the three cluster types, 12 contributing items were extracted out of 23 items. This study provides useful information and data for further studies of products requiring facial fitness.

The Effects of Social Instrumentality of Appearance on Body Satisfaction and Appearance Management Behaviors of Female Adolescents (외모의 사회적 유용성이 여자 청소년의 신체만족도와 외모관리행동에 미치는 영향)

  • Lee, Mi-Sook
    • Journal of the Korea Fashion and Costume Design Association
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    • v.14 no.4
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    • pp.163-177
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    • 2012
  • The purposes of this study were to investigate female adolescents' attitude toward the social instrumentality of appearance and to examine the effects of the attitude toward the social instrumentality of appearance on female adolescents' body satisfaction and appearance management behaviors. The subjects for this study were 435 female middle school and high school students in Daejeon and Chungnam province. The research method was a survey and the measuring instruments were a self-administrated questionnaire with 4 parts (social instrumentality of appearance, body satisfaction, appearance management behaviors, and subjects' demographics attributions). The data were analyzed by Cronbach's ${\alpha}$, factor analysis, cluster analysis, ${\chi}^2$ test, t-test, using SPSS statistical program. The results were as follows. Three dimensions (the utility of interpersonal relationship, sexual partnership and social achievement) were emerged on social instrumentality of appearance, and female adolescents were divided into 2 groups(unreceptive group and receptive group) by social instrumentality of appearance. Social instrumentality of appearance had significant effects on female adolescents' body satisfaction and appearance management behaviors. The group who had receptive attitude toward the social instrumentality of appearance was showed the lower body satisfaction and more positive attitude to perform appearance management behaviors including clothing and accessories management, fitness, skin and hair care, and plastic surgery than unreceptive group.

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A Study on the Upper Bodytype of Male Sports Athletes for the Development of Bodice Pattern (남자 운동선수의 상반신 원형 개발을 위한 체형 분석)

  • Lim, Ji-Young
    • Fashion & Textile Research Journal
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    • v.8 no.3
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    • pp.310-316
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    • 2006
  • Fitness of clothes becomes a major concern in apparel industry. But male sports athletes had difficulties to buy ready-made clothes of good fit. Because ready-made clothes manufactured in companies are produced accordingly to the general person's body types. To solve this problem, it is necessary to classify athletes' upper body into several kinds of somatotypes. The purpose of this study was to classify upper body types of male sports athletes based on the analysis of their upper body types and to provide fundamental data on the development of ready-to-wear clothing appropriate for the upper body types. The subjects for anthropometric measurement were 189 male sports athletes of 20 to 29 year-old. The result of factor analysis indicated that 6 factors were extracted from anthropometric measurements through analysis and those factors comprise 73.807% of total variance. 3 clusters were categorized using 6 factor scores by cluster analysis. Type 1 was taller than other types, had average size in circumference, width and thickness and was bending somatotype. Type 2 exhibits a large circumference in the upper body and straight somatotype. Type 3 was characterized by short, exhibits a large circumference in waist, abdomen and hip and swayback somatotype.