• 제목/요약/키워드: Exploratory data analysis

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Innovation Capacity of Student: A Case Study in Vietnam

  • DO, Anh Duc;PHAM, Nguyen Nguyen Thao;NGUYEN, Thi Minh Phuong;TU, Van Son;NGUYEN, Cam Nhung;NGUYEN, Hai Duong
    • The Journal of Asian Finance, Economics and Business
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    • 제8권5호
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    • pp.189-199
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    • 2021
  • This study aimed to explore the factors affecting the innovation capacity of students at the National Economics University, Vietnam. Researchers used the innovation capacity model based on six factors, including personality traits, future orientation, creative skills, social interaction, content knowledge, and management skills. The empirical analysis used data from the survey of 303 students at National Economics University, Vietnam, with reliable tools (SPSS 26.0 software). The data were analyzed by testing the reliability of the scales, correlation analysis, and Pearson' Linear Correlation Coefficient, exploratory factor analysis, as well as regression model based on the survey data. The research results identified the following factors affecting innovation capacity of students: management skills, social interaction, and personality traits have the strongest impact on innovation capacity of students; content knowledge has the following strongest effects on innovation capacity of students; and finally the creative skills that affects on innovation capacity of students. There is also a positive relationship between all the factors and innovation capacity of students. The result can serve as useful reference sources for scholars who are interested in the innovation field. It also helps university's managers and policymakers build the appropriate environment to improve innovation capacity of students.

An Identification of Outlying Cells in Contingency Table via Correspondence Analysis Map

  • Hong, Chong Sun;Lee, Jong Cheol
    • Communications for Statistical Applications and Methods
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    • 제8권1호
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    • pp.39-49
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    • 2001
  • When an appropriate model is fitted to explain a certain categorical data, outlying cell detection plays very important role to reduce the lack of fit. There exist many statistical methods to identify outlying cells in contingency table. In this paper, correspondence analysis is applied to identify one or two outlying cells. When corresponding relationships between categories of the row and columns are explored, we find that outlying cells could be identified via the correspondence analysis map.

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패션상품 소비자가 인식하는 상표관계본질(BRQ: Brand Relationship Quality) 규명 (제2보) (The BRQ(Brand Relation Quality) Construct Perceived by Fashion Product Consumers (Part 2))

  • 채진미;이은영
    • 한국의류학회지
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    • 제31권8호
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    • pp.1168-1179
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    • 2007
  • The objective of this research is to validate the BRQ(Brand Relationship Quality) Construct perceived by fashion product consumers. In order to establish and verify the BRQ scale, qualitative survey and quantitative survey were conducted together. 1592 copies of questionnaire were distributed to women in their 20s to 40s living in Seoul and other metropolitan areas from Dec. 26, 2005 to Jan. 8, 2006, and 723 copies of them were used for statistical data. Samplel(n=482)was used for empirical analysis, and sample2(n=241) was used for cross validity test. The data was analyzed using Exploratory Factor Analysis, Confirmatory Factor Analysis, and Pearson's Correlation Analysis. BRQ emerged from exploratory factor analysis as the hierarchical construct composed of six facets including 'self-connective attachment', 'symbol/mystery', 'trust', 'nostalgia', 'intimacy', and 'knowledge'. As the fit of this structural model was not good as a result of Confirmatory Factor Analysis, it was revised to have better fitting. Finally, empirical survey results indicate the hierarchical construct consisting of eight distinct BRQ facets including 'love/commitment', 'self-connection', 'symbol', 'mystery', 'trust', 'nostalgia', 'intimacy', and 'knowledge' as best representing the final 39item BRQ Scale. Reliability, construct validity, and cross validity of the construct were verified.

키워드 기반 탐색적 테스트의 실험적 연구 (Experimental Study of Keyword-Based Exploratory Testing)

  • 황준선;최은만
    • 소프트웨어공학소사이어티 논문지
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    • 제29권2호
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    • pp.13-20
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    • 2020
  • 탐색 테스트는 빠른 개발 주기라는 특징으로 바람직한 테스트 방법으로 소개되었으나 적용을 위하여 문서화 및 테스트 범위의 분석이 요구되어 적극적으로 채택하지 않고 있다. 한편 키워드 기반 테스트는 리소스 절약 및 유지 관리를 용이하게 하는 방법으로 소개되었으나 데이터, 설정, 상호 작용, 시퀀스 및 타이밍과 같은 변수가 많아 테스트를 미리 계획하는 것이 쉽지 않다. 하지만 키워드 기반 테스트에서 키워드를 작성하기 위한 명확한 기준과 방법을 제시하고 탐색 테스트 프로세스를 적용하여 키워드를 기반으로 테스트 사례를 만들 수 있다. 이 논문에서는 키워드 기반으로 탐색적 테스트를 자동화 하는 모델을 제안하고 실험한다. 효과를 검증하기 위해 일반 키워드 기반 테스트(KBT)와 탐색적 키워드 기반 테스트(KBET)와 비교하였고 탐색적 정상 테스트 사례(ETC) 및 탐색적 키워드 기반 테스트(KBET)와 비교하였다.

임상간호사의 전문성 측정도구 개발 (Development of a Professionalism Measurement Scale for Clinical Nurses)

  • 김정현;이혜순;방양희
    • 임상간호연구
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    • 제29권2호
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    • pp.186-197
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    • 2023
  • Purpose: The purpose of this study was to develop a scale to measure professionalism of clinical nurses and evaluate the reliability and validity of the scale. Methods: DeVellis's scale-development eight steps were applied. The initial items were developed through a literature review and discussion with investigators, and the content validity was verified by seven experts. The data were collected from 250 hospital nurses for exploratory factor analysis and 217 hospital nurses for confirmatory factor analysis. Exploratory and confirmatory factor analyses were utilized to assess the construct validity. Cronbach's ⍺ was used to test the internal consistency reliability. Results: The results of the exploratory and confirmatory factor analyses showed that the scale comprised four factors: professional skill(eight items), sense of ethics (five items), knowledge-seeking activities (four items), and autonomy(three items). The four-factor structure was validated (x 2 =600.85 p<.001, GFI=.88, CFI=.84, RMSEA=.07), and Cronbach's ⍺ for the total scale was .84. Conclusion: The study results showed satisfactory reliability and validity of the professionalism measurement scale for clinical nurses. This scale has potential as an appropriate instrument for measuring clinical nurse professionalism.

A Validation Study of the Korean Version of the Connectedness to Nature Scale

  • Gim, Wan-Suk;Lee, Min-Hyung;Kim, Kwang-Hyune
    • 인간식물환경학회지
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    • 제22권6호
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    • pp.621-628
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    • 2019
  • The purpose of this study was to investigate the reliability and validity of the Korean version of the Connectedness to Nature Scale(K-CNS), which was translated from the Connectedness to Nature Scale(CNS) developed by Mayer and Frantz. For this study, questionnaires were conducted with a sample of 407 Korean citizens from various backgrounds and regions, with the ages ranging from 17 to 60. Exploratory factor analysis, internal consistency test and correlation checks were conducted on this questionnaires data. The results of exploratory factor analysis supported that the K-CNS has 10 items in a single factor. The internal consistency of the K-CNS was .880. The K-CNS was positively correlated to the NEP (New Environmental Paradigm), satisfaction with life, mental health, compassionate love, and negatively correlated to stress response. In addition, differences were found by group and age, but not by the gender. The K-CNS was higher in the natural-friendly group than in the general group. By age, the K-CNS scores was high in 40s and 50s than 10-39 years old.

생물학적 지표 자료의 탐색적 분석 : LAKE ONTARIO의 실측자료를 중심으로 (Exploratory Analysis of Bioindex Data : Based on a Data Set from take Ontario)

  • 이기원
    • 응용통계연구
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    • 제16권1호
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    • pp.15-31
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    • 2003
  • Lake Ontario에서 수년간 측정된 실제 생물학적 지표 자료의 각 변수에 대하여 관찰시점의 불규칙성과 의존성을 고려한 탐색적 분석모형의 수립과정에 대하여 연구하였다. 이 상점을 제거한 후 trend와 seasonal component를 수정 한 선형 모형으로부터 잔차를 계산하고 이로부터 variogram과 correlogram을 그려보았다.

What are Considered When Building Purchase Intention of Unfamiliar-Branded Cosmetics?

  • Lee, Ji-Hye;Yoh, Eunah
    • Fashion, Industry and Education
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    • 제15권2호
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    • pp.25-35
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    • 2017
  • In this study, causal relationships of belief-attitude-purchase intention for unfamiliar-branded cosmetics (UBC) were tested based on the theory of reasoned action. Data of 249 consumers who have purchased UBC were submitted to the descriptive statistics, exploratory factor analysis, and regression analysis with SPSS. In results of exploratory analysis, three factors of beliefs on UBC were generated and titled as ingredients, publicity, and subsidiary features. In regression analysis results, ingredient factor affected attitude toward UBC while publicity and subsidiary features did not influence attitude toward UBC. It implies that consumers build their attitude toward brands focusing on ingredients that are core elements of cosmetic products. Attitude toward UBC solely influenced purchase intention while the effect of social acceptance on purchase intention was not found. In conclusion, consumers depend much on ingredients when they purchase UBC so brands newly launched or brands without reputations need to focus more on an excellence in ingredients and special functions of UBC to appeal to consumers when penetrating to the new market.

기하문제해결에서의 GSP를 활용한 탐구학습 신장 (A experimental model of combining exploratory learning and geometry problem solving with GSP)

  • 전영국;주미
    • 대한수학교육학회지:수학교육학연구
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    • 제8권2호
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    • pp.605-620
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    • 1998
  • This paper suggested a geometry learning model which relates an exploratory learning model with GSP applications, Such a model adopts GSP's capability of visualizing dynamic geometric figures and exploratory learning method's advantages of discovering properties and relations of geometric problem proving and concepts associated with geometric inferencing of students. The research was conducted for 3 middle school students by applying the proposed model for 6times at computer laboratory. The overall procedure was videotaped so that the collected data was later analyzed by qualitative methodology. The analysis indicated that the students with less than van Hiele 4 level took advantages of adoption our proposed model to gain concrete understandings of geometric principles and concepts with GSP. One of the lessons learned from this study suggested that the roles of students and a teacher who want to employ the proposed model need to change their roles respectively.

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대학 CTL 교수지원프로그램 맞춤형 교수역량진단도구 개발 (Development of Teaching Competency Scales: Focused on CTL Teaching Program)

  • 강대식
    • 실천공학교육논문지
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    • 제14권1호
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    • pp.49-59
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    • 2022
  • 본 연구는 A대학 교수학습센터(Center for Teaching & Learning)의 교수지원 프로그램 특성에 부합하는 교수역량 진단도구를 개발하고자 수행되었다. 이러한 연구목적을 달성하기 위해 선행연구 검토를 통해 3개 역량군(기본역량, 실천역량, 혁신역량)과 13개 교수역량, 26개 하위역량 요인으로 구성된 잠정적 교수역량 진단도구를 설정하였다. 잠정적 교수역량 진단도구의 신뢰도 및 타당도 검증을 위해 2020년 11월에 A대학교 교수자를 대상으로 온라인 설문조사를 실시하였으며, 설문 데이터를 정리하여 탐색적 요인분석과 확인적 요인분석을 수행하였다. 탐색적 요인분석 결과, 기본역량, 실천역량, 혁신역량 3개 역량군에 포함되는 26개 하위역량이 17개로 축소되었다. 확인적 요인분석을 실시한 결과, 모형의 적합도가 양호한 것으로 나타나 CTL 맞춤형 교수역량(하위역량) 17개 영역, 79개 문항을 최종 확정하였다. 또한 확정된 교수역량 요인의 개념신뢰도와 분산추출지수, 판별타당도를 분석한 결과 양호한 수준을 보였다. 본 연구를 통해 개발된 교수역량 진단도구는 CTL 교수지원 프로그램의 효과성 평가와 신규 프로그램 개발의 근거자료로 활용될 수 있다.