• 제목/요약/키워드: exploratory data analysis

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Seven Facets of Learning Agility in Higher Education for Future Society

  • SUNG, Eunmo
    • Educational Technology International
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    • 제22권2호
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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.

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

  • 우성훈;정병출
    • 대한임상검사과학회지
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    • 제55권4호
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    • pp.235-243
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    • 2023
  • 차세대 염기서열 분석이 개발되고 널리 사용됨에 따라 RNA-시퀀싱(RNA-sequencing, RNA-seq)이 글로벌 전사체 프로파일링을 검증하기 위한 도구의 첫번째 선택으로 급부상하게 되었다. RNA-seq의 상당한 발전으로 다양한 유형의 RNA-seq가 생물정보학(bioinformatics) 발전과 함께 진화했으나, 다양한 RNA-seq 기법 및 생물정보학에 대한 전반적인 이해 없이는 RNA-seq의 복잡한 데이터를 해석하여 생물학적 의미를 도출하기는 어렵다. 이와 관련하여 본 리뷰에서는 RNA-seq의 두 가지 주요 섹션을 논의하고 있다. 첫째, Standard RNA-seq과 주요하게 자주 사용되는 두 가지 RNA-seq variant method를 비교하였다. 이 비교는 어떤 RNA-seq 방법이 연구 목적에 가장 적절한지에 대한 시사점을 제공한다. 둘째, 가장 널리 사용되는 RNA-seq에서 생성된 데이터 분석; (1) 탐색적 자료 분석 및 (2) enriched pathway 분석에 대해 논의하였다. 데이터 세트의 전반적인 추세를 제공할 수 있는 주 성분 분석, Heatmap 및 Volcano plot과 같이 RNA-seq에 대해 가장 널리 사용되는 탐색적 자료 분석을 소개하였다. Enriched pathway 분석 섹션에서는 3가지 세대의 enriched pathway 분석에 대해 소개하고 각 세대가 어떤 식으로 RNA-seq 데이터 세트로부터 enriched pathway를 도출하는지를 소개하였다.

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

  • 박미라
    • 응용통계연구
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    • 제18권2호
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    • pp.355-369
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    • 2005
  • 마이크로어레이 실험에서는 유전자의 기능과 상호작용의 이해를 돕기 위한 방안으로 유전자발현자료의 시각화방법이 많이 사용되고 있다. 행렬도는 유전자와 샘플들을 동시에 그려볼 수 있어서, 유전자 또는 샘플의 군집이나 유전자-샘플간 연관작용을 알아보는데 더욱 유용하게 쓰일 수 있다. 본고에서는 마이크로어레이실험에서 행렬도를 이용하여 유전자의 군집 및 연관성을 알아보는 방법을 소개하고, 추가점기법을 이용하여 새로운 샘플을 분류하는 방법을 제안하였다. Golub et al.(1999)의 백혈병 데이터와 Alizadeh et al. (2000)의 림프구데이터, Ross et al.(2000)의 NCI60 종양조직데이터를 이용하여 유용성을 살펴보았으며, 계층적 군집분석 및 k-평균 군집분석 등 다른 기법을 이용한 결과와 비교하고 이러한 기법을 행렬도와 연계하는 방안을 살펴보았다.

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

  • 홍인숙;이보람;오지영;임정은;노선영
    • 복식문화연구
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    • 제19권5호
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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.

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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    • 제26권3호
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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.

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

  • 이병훈
    • 노동경제논집
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    • 제25권1호
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    • pp.1-21
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    • 2002
  • 본 연구는 구직자의 직업탐색행위와 관련하여 3차년도의 한국노동패널 자료를 활용한 실증분석을 통해 서구의 선행연구들이 구분하는 간접 공식의 구직경로 범주에 각각 포괄되는 세부적인 요소들이 구직자의 개인속성 변수와 여타 영향요인들에 따라 상충되는 인과성의 결과를 보이고 있음을 확인하였다. 또한, 직업탐색의 활동패턴에 대해 일관된 형태로 가장 중요하게 영향을 미치는 설명변수가 구직자의 학력임을 밝히고 있다. 구직방법의 활용폭에 대해 구직자의 사회적 연결망(유력인사 친척관계)이 유의하게 작용하고 있는 것으로 드러난 한편, 구직경로에 대해서는 선행연구와 유사하게 부진의 학력이 구직자의 직업탐색 활동에 주요하게 영향을 미치고 있는 것으로 나타났다.

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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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    • 제17권1호
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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.

파티플래닝(Party Planning)의 속성에 대한 탐색적 분석과 고객들의 인지도 비교 (Exploratory Analysis on Attributes of Party Planning and Comparisons of Customers' Perception for Party Planning)

  • 정유경;김선희
    • 한국식생활문화학회지
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    • 제19권5호
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    • pp.532-543
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    • 2004
  • The purpose of this study was to investigate three different perceptions based on major 23 part planning attributes. These party planning attributes were categorized using exploratory factor analysis. Three groups of respondents were identified based on the sample data; the first group is a group of people experienced parties before, the second group is a group of people intended to attend parties in near future, and the third group is a group of people who want to be a party planner. Respondents participated in this study express their own perceptions on party-planning attributes. The study shows that the perceptions of respondents were significantly different from each other. Particularly, prospective party planners emphasize on artistic attributes, such as harmony between dishes and foods or between the party concept and foods. However, party attendees more importantly considered other attributes, including the event suitable to the party type, places held a party. The research suggests that understanding party attendees' perception will provide useful information to develop party events that can reflect customers' desires.

보건소 방문간호사의 전문직 간호역량 (The Development of Home-Visiting Nurses' Professional Competencies)

  • 백희정;문지현
    • 가정간호학회지
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    • 제23권2호
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    • pp.233-242
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    • 2016
  • Purpose: The purpose of this study was to identify professional competencies of visiting nurses in public health centers. Methods: A methodological study for the development of visiting nurses' professional competency was conducted through the review of literature and construction of a conceptual framework for the development of professional competence. After reviewing the content validity of each question and confirming the items of the preliminary tool, the construct validity of the tool was verified through exploratory factor analysis and internal reliability was confirmed. Results: After constructing 5 factors relating to the visiting nurse's professional competence, 25 items were developed, based on verification of content validity by experts. The results of the exploratory factor analysis showed that the professional competence of the visiting nurse was influenced by factors such as "health assessment and screening," "health teaching and counseling," "interprofessional communication", "program planning and implementation", and "Professional development". These five factors accounted for 76.38% of the professional competencies of the visiting nurse. Conclusion: The professional competence of the visiting nurse is consistent with the aim of the visiting nursing project. Also our results will contribute to baseline data used to evaluate the quality of work of the visiting nurse.

인테리어 테라피에 관한 탐색적 연구 (An Exploratory Study on Interior Therapy)

  • 장미정
    • 한국실내디자인학회논문집
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    • 제26권1호
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    • pp.124-133
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    • 2017
  • The purpose of this study is to explore the interior therapy that introduced the concept of therapy into interior space. This study examines interior therapy based on the concepts of stress and therapy. As the study methods, a qualitative analysis to review the concept of interior therapy was conducted together with a quantitative analysis on the current state of domestic therapy-related researches. The scope of the study is limited to domestic journals published from 1988, when the first domestic research was embarked on to analyze the current status of therapy-related researches, until November 2016. According to the study results, the domestic therapy-related studies were mainly focused on aromatherapies and food therapies. By year, the first domestic study of its kind was conducted on logotherpay in 1988. And until 2000, studies were carried out mainly on aromatherapies. Since then, new psychotherapy research fields have emerged; color therapy in 2003 and food therapy in 2008. However, in the space design field except for color therapy-related researches, there have been not sufficient studies on the indoor space therapy field that investigates the possibility of indoor space as a therapy from an integrated viewpoint. Therefore, this study reviewed domestic researches on interior therapy which applied the concept of therapy to interior design and suggested three cognitive-emotional-behavioral measures as healing factors. Finally, this study is expected to be used as basic data for design planning and curriculum development which apply the concept of therapy to interior design-related fields.