• Title/Summary/Keyword: Exploratory data analysis

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A Scale for Clothing Satisfaction: A Consumer Life Cycle Approach (의복만족 척도: 소비자 생활주기적 접근)

  • Jeon, Kyung-Sook;Park, Hye-Jung
    • Journal of the Korean Society of Clothing and Textiles
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    • v.33 no.7
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    • pp.1050-1060
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    • 2009
  • This study develops a scale for consumer clothing satisfaction based on Lee et al. 's (2002) five stages of the consumer life cycle (acquisition, possession, consumption, maintenance, and disposal). Data were gathered by surveying college students using convenience sampling, and 419 questionnaires were used in the statistical analysis. In analyzing the data, an exploratory factor analysis and a confirmatory factor analysis using a structural equation modeling were conducted. The proposed scale, which identified various sources of satisfaction and dissatisfaction associated with the 5 consumption cycles of clothing, suggests some guidelines for marketers in enhancing consumer clothing satisfaction across consumption stages. The model test for the scale also identified that consumption satisfaction had the greatest effect on consumer clothing satisfaction showing the strongest loading and squared multiple correlation.

The Effects of Maternal Parenting Variables on Preschool Children's Self Regulation (어머니의 양육관련 변인과 유아의 자기조절 능력과의 관련성 탐색)

  • Cho, Young-Suk;Lee, Yang-Hee
    • Journal of the Korean Home Economics Association
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    • v.47 no.6
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    • pp.51-66
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    • 2009
  • The purpose of this study was to develop a model for preschool children's self regulation by examining the effects of maternal parenting variables on preschool children's self regulation. The subjects were 1219 mothers of 4- to 6-year-old preschool children attending kindergarten or child care centers located in Seoul and Kyunggi Province, Korea. For data analysis, exploratory factor analysis(EFA) and confirmatory factor analysis(CFA) were applied to the survey data in the first phase and structural equation modeling(SEM) analysis in the second phase. The major results of this study were as follows: maternal parenting stress and maternal behavior were the most direct influential variables on preschool children's self-regulation. Moreover, maternal parenting efficacy was indirectly mediated through maternal behavior.

Empirical Analysis on the Influence of Service Quality of Leisure Food E-Commerce in China on Consumer Satisfaction Degree (중국 레저푸드 전자상거래의 서비스 품질이 소비자 만족도에 미치는 영향에 관한 실증분석)

  • Liu, Zi-Yang;Meng, Jia
    • Proceedings of the Korean Society of Computer Information Conference
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    • 2019.07a
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    • pp.407-408
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    • 2019
  • This thesis determines the research framework and scale design of leisure food E-Commerce consumer satisfaction degree by referring to previous theoretical model of customer satisfaction degree, the universal satisfaction evaluation index system, and the characteristics of leisure food E-Commerce in China. In this research, consumers who have bought leisure food online are taken as the research object, data are collected by questionnaires, and exploratory factor method is used to screen valid sample data. Through the Empirical Analysis which includes Descriptive Statistical Analysis, Reliability and Validity Analysis and Structural Equation Modeling, it is concluded that website design, logistics delivery service, commodity quality, and after-sales service are the main service quality on which the Leisure food E-Commerce enterprises should take focus. The service quality has significant positive influences on satisfaction degree. On the other hand consumer satisfaction has a significant positive influence on customer loyalty, which will create more earnings for the Leisure food E-Commerce enterprises.

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Seven Facets of Learning Agility in Higher Education for Future Society

  • SUNG, Eunmo
    • Educational Technology International
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    • v.22 no.2
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    • pp.169-197
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    • 2021
  • Learning agility as high potentials is drawing attention as a competency for leading an uncertain future society. The present study aims to determine the factors of learning agility in higher education context for future society. To address this goal, Major factors related to learning agility were derived through literature review and statistically verified. For statistical analysis, the nationwide data were collected from 1,000 undergraduate students in South Korea by National Youth Policy Institute. The participants asked to answer 29 items of learning agility questionnaires (LAQ). The collected data were analyzed by descriptive statistical analysis, exploratory factor analysis, and confirmatory factor analysis. As a result, learning agility items were verified normality and reliability. Learning agility was identified seven factors; challenging mind, learning responsibility, reflecting experience, intellectual curiosity, systemic thinking, change adaptability, and logical thinking. Also, the structural model fit of the seven factors of learning agility was also confirmed to be good. Based on the findings of the present study, empirical, theoretical, and practical contributions were presented, and suggestions for further research were proposed in detail.

Big Data Analytics in RNA-sequencing (RNA 시퀀싱 기법으로 생성된 빅데이터 분석)

  • Sung-Hun WOO;Byung Chul JUNG
    • Korean Journal of Clinical Laboratory Science
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    • v.55 no.4
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    • pp.235-243
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    • 2023
  • As next-generation sequencing has been developed and used widely, RNA-sequencing (RNA-seq) has rapidly emerged as the first choice of tools to validate global transcriptome profiling. With the significant advances in RNA-seq, various types of RNA-seq have evolved in conjunction with the progress in bioinformatic tools. On the other hand, it is difficult to interpret the complex data underlying the biological meaning without a general understanding of the types of RNA-seq and bioinformatic approaches. In this regard, this paper discusses the two main sections of RNA-seq. First, two major variants of RNA-seq are described and compared with the standard RNA-seq. This provides insights into which RNA-seq method is most appropriate for their research. Second, the most widely used RNA-seq data analyses are discussed: (1) exploratory data analysis and (2) pathway enrichment analysis. This paper introduces the most widely used exploratory data analysis for RNA-seq, such as principal component analysis, heatmap, and volcano plot, which can provide the overall trends in the dataset. The pathway enrichment analysis section introduces three generations of pathway enrichment analysis and how they generate enriched pathways with the RNA-seq dataset.

An Exploratory Study on the Configuration and Characteristics of Fashion Power Blogs as a Source of Information (전문 정보원으로서의 패션 파워블로그의 구성과 특징에 대한 탐색적 연구)

  • Hong, In-Sook;Lee, Bo-Ram;Oh, Ji-Young;Lim, Jung-Eun;Roh, Sun-Young
    • The Research Journal of the Costume Culture
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    • v.19 no.5
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    • pp.1031-1048
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    • 2011
  • The purpose of this study was to investigate the status of domestic and foreign power blogs that serve as professional source of information and to clarify the difference of the criteria for the certification and selection of power blogs. The study also analyzed the configuration of contents and the characteristic of categories of the power blogs. Eleven domestic blogs were examined, of which ten were certified as power blogs on several portal sites and one blog was operating in English. Furthermore twelve foreign blogs were examined, of which ten blogs were selected from the graded list of www.alexa.com for the Fashion Power Blog TOP 20 adopted on www.telegraph.co.uk in 2009, and two noticeable blogs were selected additionally. Data were analyzed by both theoretical and exploratory studies. The exploratory study was conducted by fourteen majors, who took interest in the blogs and were divided into two groups to look at the domestic and foreign sites, from 12 October to 12 November in 2010. The types of blogs were classified by frequency analysis of interactivity, interest provision, information provision and purchase capability. The investigators checked the type of the contents of each blog and the frequencies were used for the classification type. The analysis showed that the frequencies were in the order of information provision, followed by interest provision, and purchase capability for foreign blogs, while interest provision was followed by information provision for domestic blogs. Interactivity, interest provision, information provision and purchase capability were generally reflected in foreign blogs. Rather than interest provision and information provision, however, interactivity and purchase capability were reflected relatively weakly in domestic blogs.

Exploratory Analysis of Gene Expression Data Using Biplot (행렬도를 이용한 유전자발현자료의 탐색적 분석)

  • Park, Mi-Ra
    • The Korean Journal of Applied Statistics
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    • v.18 no.2
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    • pp.355-369
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    • 2005
  • Genome sequencing and microarray technology produce ever-increasing amounts of complex data that needs statistical analysis. Visualization is an effective analytic technique that exploits the ability of the human brain to process large amounts of data. In this study, biplot approach applied to microarray data to see the relationship between genes and samples. The supplementary data method to classify new sample to known category is suggested. The methods are validated by applying it to well known microarray data such as Golub et al.(1999), Alizadeh et al.(2000), Ross et al.(2000). The results are compared to the results of several clustering methods. Modified graph which combine partitioning method and biplot is also suggested.

Validity and Reliability of the Life Transition Scale in Parents of Disabled Children Across the Life Transition Process

  • Hong, Sun Woo;Kim, JinShil;Bang, Hwal Lan
    • Child Health Nursing Research
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    • v.26 no.3
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    • pp.338-347
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    • 2020
  • Purpose: The Life Transition Scale (LTS) consists of 24 items that assess the life transition process of parents of autistic children. This study aimed to examine the validity and reliability of the LTS in parents of children with a wide spectrum of disabilities. Methods: Data were collected from 260 parents of children with disabilities through self-report questionnaires. Validity was examined using exploratory and confirmative factor analysis to determine the factor structures of the LTS; socio-demographic differences in LTS scores were examined using the t-test or ANOVA. Reliability was examined using Cronbach's α coefficient. Results: A four-factor structure was validated (χ2=640.0, p<.001, GFI=.81, RMSEA=.07, NNFI=.89, CFI=.89, PNFI=.74, Q [χ2/df]=2.60). The validity of the LTS was verified by exploratory factor analysis, with factor loading ranging from .30 to .80. There were significant differences in the accepting phase according to children's and parents' age and the type of disability, and in the wandering phase according to parental gender, educational level, job, and socioeconomic status. The Cronbach's αs for the reliability of each of the four structures were acceptable, within a range of .80~.90. Conclusion: The LTS is a valid and reliable measurement to assess the life transition process of parents with disabled children.

An Exploratory Study on Social Factors Affecting Job Search Behavior (구직활동의 영향요인에 관한 탐색적 연구)

  • Lee, Byoung-Hoon
    • Journal of Labour Economics
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    • v.25 no.1
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    • pp.1-21
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    • 2002
  • This study presents an empirical analysis of job search behaviors by using the 3rd Korean Labor and Income Panel Study (KLIPS) data. The first finding of the study is that specific job search methods, respectively categorized as the indirect and the formal pattern, show the contrasting consequences of causality, as given job searchers'personal attributes and other social factors. Secondly, this analysis confirms that job searchers' education level is the most important factor that influences their behavioral patterns in a consistent manner. Moreover, it is evident in this exploratory study that job searchers' social network (particularly whether to have close ties with relatives of high social rank) is a statistically important factor to influence the extent of job search methods in use, while their fathers' education level also significantly affects the choice of job search patterns.

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Psychometric Evaluation of the Colorectal Cancer Screening Belief Scale Based on Health Belief Model's Constructs for the Fecal Occult Blood Test

  • Tahmasebi, Rahim;Noroozi, Azita;Dashdebi, Kamel Ghobadi
    • Asian Pacific Journal of Cancer Prevention
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    • v.17 no.1
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    • pp.225-229
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    • 2016
  • Background: It is important to validate scales related to cancer screening beliefs in order to better understand perceptions. The aim of this study was to test the psychometric properties of the colorectal cancer screening belief scale based on Health Belief Model (HBM) constructs. Materials and Methods: Data were collected from 600 persons referred to outpatient laboratory units in Iran through a convenience sampling procedure. In this cross-sectional study, exploratory and confirmatory factor analyses were used to examine construct validity of scale. Results: Through exploratory factor analysis, 52 items of the scale converged to five constructs of HBM with 4 items omission. Construct validity was determined by confirmatory factor analysis through which correlated model was supported. Cronbach's alpha coefficient for the whole scale was obtained as 0.78, which indicates reliability of the scale. Conclusions: The study findings showed that this scale is a valid and reliable instrument that can be used for measuring HBM constructs about colorectal cancer screening with the fecal occult blood test.