• 제목/요약/키워드: Exploratory data analysis

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R 소프트웨어를 이용한 대기오염 데이터의 시각화 (Data visualization of airquality data using R software)

  • 오영창;박은식
    • Journal of the Korean Data and Information Science Society
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    • 제26권2호
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    • pp.399-408
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    • 2015
  • 본 논문은 대기오염 자료를 여러 가지 방법의 데이터 시각화를 통해 나타내었고, 데이터 시각화 방법별로 통계적인 방법을 활용한 분석과 연계하여 어떤 특징을 알아 볼 수 있는지를 나타냈다. 데이터 시각화 도구로는 통계 패키지인 R을 사용하였다. 분석에 사용된 데이터는 뉴욕시에서 1973년 5월부터 9월까지 공기의 질을 측정한 자료이다. 먼저 단변량 분석과 단순회귀분석을 실시하여 데이터 시각화를 통해 자료의 기본적인 특성을 파악하고 시각화 방법으로 산점도행렬 등을 통해 특성을 한눈에 볼 수 있게 나타내었다. 다중 회귀 분석을 실시하여 로그변환 등을 이용하여 최적의 모형을 찾고 설명변수들을 범주화하여 상자그림이나 3차원 투시도, 3차원 산점도 등 여러 데이터 시각화 방법을 이용해 대기오염 데이터의 전체적인 특성들을 알아보았다.

한국 청소년의 복지의식 결정요인에 대한 탐색적 연구: 노후복지 책임주체를 중심으로 (A Exploratory Study on the Determinants of Welfare Attitudes of Korean Youth: Focusing on Old Age Responsibility)

  • 김신영
    • 한국조사연구학회지:조사연구
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    • 제9권1호
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    • pp.23-42
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    • 2008
  • 이 연구는 한국 청소년의 복지의식 형성과 관련된 변인들에 대한 탐색적 연구이다. 연구에 포함될 변인들은 주로 청소년들의 가치관과 관련되어 있다. 청소년의 복지의식은 '노후생활에 대한 책임주체'에 대한 응답으로 알아보았다. 본 연구에서 사용된 자료는 한국청소년정책연구원(전(前) 한국청소년개발원)에서 진행 중인 "한국청소년발달지표조사연구"의 일환으로 실시된 한국청소년발달지표 1차년도(2005) 조사 자료이다. 청소년의 노후복지 책임주체 인식에 영향을 미치는 청소년 가치지향과 사회인구학적 변수들을 모델에 투입한 다항로짓분석(Multinomial Logit Model) 결과, 부모학력, 평등의식, 국가의 책무에 대한 인식 등이 한국 청소년들의 복지의식에 유의한 영향을 주고 있음이 밝혀졌다. 연구 설계상의 몇 가지 한계점은 있으나 사회구성원들의 복지의식과 사회정책의 결과와의 관련, 그리고 사회보장제도의 세대 간 지속성 등의 차원에서 본 연구의 의의를 찾을 수 있을 것이다.

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Data Framework Design of EDISON 2.0 Digital Platform for Convergence Research

  • Sunggeun Han;Jaegwang Lee;Inho Jeon;Jeongcheol Lee;Hoon Choi
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제17권8호
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    • pp.2292-2313
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    • 2023
  • With improving computing performance, various digital platforms are being developed to enable easily utilization of high-performance computing environments. EDISON 1.0 is an online simulation platform widely used in computational science and engineering education. As the research paradigm changes, the demand for developing the EDISON 1.0 platform centered on simulation into the EDISON 2.0 platform centered on data and artificial intelligence is growing. Herein, a data framework, a core module for data-centric research on EDISON 2.0 digital platform, is proposed. The proposed data framework provides the following three functions. First, it provides a data repository suitable for the data lifecycle to increase research reproducibility. Second, it provides a new data model that can integrate, manage, search, and utilize heterogeneous data to support a data-driven interdisciplinary convergence research environment. Finally, it provides an exploratory data analysis (EDA) service and data enrichment using an AI model, both developed to strengthen data reliability and maximize the efficiency and effectiveness of research endeavors. Using the EDISON 2.0 data framework, researchers can conduct interdisciplinary convergence research using heterogeneous data and easily perform data pre-processing through the web-based UI. Further, it presents the opportunity to leverage the derived data obtained through AI technology to gain insights and create new research topics.

과학 비유 수업에 대한 예비 교사와 현직 교사의 인식 조사 도구의 탐색적 개발 및 적용 (Exploratory Developing Instruments for and Assessing Awareness of Science Teaching through Analogy among Pre- and In-service Elementary Teachers)

  • 권성기;강남화
    • 한국초등과학교육학회지:초등과학교육
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    • 제27권1호
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    • pp.42-48
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    • 2008
  • The purpose of this study was to develop an instrument for assessing teachers' awareness of science teaching through analogy (ASTA) and to establish its validity and reliability. Based on the literatures on science teaching with analogies, we constructed 23 survey items. Face validity of the items was established using three science education experts. Through exploratory factor analysis with responses of 35 pre- and 26 inservice elementary school teachers, the instruments were constructed on four subcategories: awareness of analogies in science, use of analogy in teaching and learning, self-efficacy in science knowledge, and knowledge of analogy. The data collected from pre- and in-service elementary teachers demonstrated that overall the teachers' awareness of analogy in science was neutral, which indicated they did not have clear standpoints of science teaching through analogy. Further examination demonstrated that there was no significant difference between pre- and in-service teachers and between two genders. Moreover, there was no significant difference among teachers who preferred either didactic or discovery teaching approaches. We conclude that ASTA test would contribute assessment of teachers' awareness of analogy in science teaching while further examination of the instrument will warrant for its broader use.

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농촌 공정관광의 품질과 만족이 행동의도에 미치는 영향 (Structural Relationships between Quality, Satisfaction, and Behavioral Intentions in Rural Responsible Tourism: Moderating Effects of Age)

  • 김경희;이선민
    • 한국지역사회생활과학회지
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    • 제26권3호
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    • pp.523-540
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    • 2015
  • This study examines the structural relationships between service quality, satisfaction, and behavioral intentions in responsible tourism. In particular, the study focuses on moderating effects of age. Data were collected from 471 tourists from seven responsible tourism agencies. SPSS 20.0 and AMOS 18.0 were used for frequency, reliability, exploratory factor, confirmatory factor, and path analyses. The results of a exploratory factor analysis yield two dimensions of service quality (functional quality and technical quality). The results of structural equation modeling indicate that functional quality and technical quality had positive effects on satisfaction, which in turn had a positive effect on behavioral intentions. In addition, age moderated the relationships between service quality, satisfaction, and behavioral intentions such that functional quality had a positive effect on satisfaction in the group of tourists in their twenties and thirties and that functional quality and technical quality were important factors for tourists in their forties. The results are expected to help responsible tourism communities better manage service quality to increase tourist satisfaction.

복합쇼핑몰에서의 세대별 몰링문화에 관한 연구 - 엔터테인먼트 경험을 중심으로 - (Generational malling culture in multi-complex shopping malls - Entertainment experiences -)

  • 박민정
    • 복식문화연구
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    • 제21권5호
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    • pp.726-741
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    • 2013
  • Malling culture, which refers to the enjoyment of shopping in multi-complex malls with shopping, cultural, and leisure facilities, has emerged as a major trend in society. However, few studies have researched malling culture in depth. This study classified people who go to multi-complex shopping malls as belonging to the baby-boom generation, X-generation, or Y-generation to investigate consumer culture in malls, with an emphasis on user satisfaction and entertainment experiences. Consumers who had shopped in a multi-complex shopping mall during the last 6 months were surveyed. Data were collected through a research company, and responses from 417 subjects were used in the analysis. Among the 417 subjects, 130 were baby-boomers, 136 were from the X-generation, and 151 were from the Y-generation. Investigating the components of multi-complex shopping malls that stimulate entertainment experiences, this study found that exploratory, emotional, and leisure experiences were enhanced when users were more satisfied with the image, atmosphere, and events of shopping malls. In addition, mall image and atmosphere contributed to the improvement of social experiences. With regard to generation, baby-boomers and subjects from the X-generation were generally more satisfied with mall atmosphere, image, and events and had more exploratory and leisure experiences. This study holds significance in that it examined malling culture from a wider perspective than simply the younger generation and presented scholarly and marketing implications based on insights into generational malling culture.

Science communication matters: An exploratory study of academic public engagement in Vietnam using Bayesian statistics

  • Quang Anh Phan;Manh-Toan Ho;Quan-Hoang Vuong;Hiep-Hung Pham;Minh Huyen Vu;Thi Thu Ha Nguyen;Thanh Thao Thi Phan
    • Journal of Contemporary Eastern Asia
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    • 제23권1호
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    • pp.35-57
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    • 2024
  • The overarching purpose of this study is to examine the current status of academic public engagement in Vietnam. Data were obtained from a survey with 245 university lecturers, and descriptive statistics were used jointly with Bayesian statistics as tools for analysis. This study reveals that a significant proportion of university lecturers are not involved in public engagement, neither through the public press (66.5%) nor social media (49%). Those who have been active in public engagement use the public press and social networks to communicate science, with the latter being more used than the former. In addition, this study also pointed out that experienced scientists tend to engage with the public press, while early-career researchers often choose social networks. The findings of this study provide implications for higher education policymakers and administrators.

How do mothers with young children perceive endocrine-disrupting chemicals?: an exploratory qualitative study

  • SoMi Park;ChaeWeon Chung
    • 여성건강간호학회지
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    • 제29권4호
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    • pp.337-347
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    • 2023
  • Purpose: Despite the health impacts of endocrine-disrupting chemicals (EDCs) beginning in the early stages of life, there is little research on the perception of EDCs among Korean mothers, who are primarily responsible for protecting children. This study aimed to explore how mothers with young children perceived EDCs for their concerns, the issues they faced, and the way they dealt with them. Methods: An exploratory qualitative design was utilized. Twelve mothers who were recruited from snowball sampling participated in voluntary interviews. Individual in-depth interviews lasting approximately 47 to 60 minutes were recorded and transcribed verbatim. The data were analyzed using qualitative content analysis as suggested by Graneheim and Lundman. Results: Four categories, 10 subcategories, and 25 condensed meaning units were identified by interpreting mothers' underlying meanings. The four categories were 'Knowledgeable yet contrasting ideas regarding EDCs,' 'Negative health impact, but more so for children,' 'Inaction or trying to minimize exposure,' and 'Need for early, reliable resources and social change.' Mothers were knowledgeable about EDCs and actively needed further education and support. While they tended to focus more on the health impact of EDCs on their children and were optimistic about their health risks, paying less attention to their preventive behaviors. Conclusion: Healthcare professionals must consider mothers' perceptions of EDCs in future education and interventions regarding EDCs impact on women's life stages such as puberty, pregnancy, and childrearing. Also preventive strategies that can be applied to their daily lives are needed.

사업자간 관계 분석을 통한 핀테크 결제 활성화 방안 연구 (An Exploratory Study on the Activation of Fintech Payment through the Relation Analysis among Business Operators)

  • 길진세;김은진;김소담;김희웅
    • 한국정보시스템학회지:정보시스템연구
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    • 제26권4호
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    • pp.137-161
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    • 2017
  • Purpose In this study, the difficulties were analyzed with the field data from two domestic and interview with industry practitioners. And We presented initiatives with feasibilities to overcome the hurdle for progress of easy-payment. Design/methodology/approach We collected industry data from two domestic credit card companies and analyzed that data to prove 7 proposition in detail. Also We had interview data from industry practitioners who can understand the relationship between stakeholders. For this analysis, we used the causal loop diagram to find activation inhibition and activation elements about easy-payment. Findings The Fintech easy-payment industry has been organically involved in various partners such as customers, merchants, PGs, VANs, credit card issuers, banks, payment providers, terminal manufacturers, etc. and they have been competing against each other to hold leader position in the easy-payment market. Because of the reasons, the easy-payment does not spread out as much as it expects. In this study, the difficulties were analyzed with the field data and interview with industry practitioners and proposed five initiatives with feasibilities to overcome the hurdle for progress of easy-payment. This study helps to understand current situation and issues of Fintech and easy-payment for related research in future.

프랜차이즈 모기업 핵심역량 자원이 가맹점 관계결속과 재계약의도에 미치는 영향 (Effects of Core Competence and Resource Sharing on the Relational Bond among Franchisees and on Re-contract Intention in the Franchising Parent Companies)

  • 허영욱;주말찬
    • 유통과학연구
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    • 제12권4호
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    • pp.11-22
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    • 2014
  • Purpose - The domestic franchise industry has made significant contributions to industry such as investment, employment, and community economy development, facilitating growth potential. The franchise industry provides management knowhow transfer between parent companies and franchisees as per contracts addressing use of business signs, franchisees' independent position, franchisor support, and royalties to be paid to the franchisors. However, many franchisors lack management knowhow and provide insufficient support because of poor control of franchisees and not having a systematic approach to support. This results in dissatisfied franchisees and failure to establish long-term relationships. Few studies have examined relational commitment and/or re-contract intention by support resources between franchisors and franchisees, despite a considerable output of theories and studies of the growth of the franchise industry. The purpose of this study, therefore, was to examine the effects of the ability to provide resources on relational commitments and re-contract intention, and to suggest causal relationships and implications. Research design, data, and methodology - The subject was domestic franchisors registered with the Association of Franchise with more than 50 franchisees. Franchisees under contract for 2 years and considering re-contract of their franchise 2 years later were used. The subjects totaled 300 franchisees in Seoul. A questionnaire survey was used to investigate the subject of franchisees' concessions during the 10 days from November 21, 2013 to November 30, 2013. After excluding 16 surveys with poor answers, 284 responses were finally used. Four areas and 44 questions were used. A nominal scale was used for four common characteristics questions including gender, ages, educational background, and franchise managing time. Questions regarding ability, relational commitment, and re-contract intention made use of a Likert 5-point scale. Data coding and data cleaning were used. SPSS 18.0 was used as follows. First, frequency analysis was done to investigate demographic characteristics. Second, exploratory factor analysis was done to verify validity of testing tools, and Cronbach's α coefficient was used to verify reliability. Third, correlation analysis and multiple regression analysis were done. An exploratory factor analysis was done to verify validity of concepts. A correlation analysis was done to test relationships between the variables, and multiple regression analysis was done to verify franchisor's ability, franchisees' relational commitment, and re-contract intention. Results - The following were the outcomes. First, store operation management, finance operation management, and human resource management affected the calculated bond. Second, store operation management and finance operation management affected the emotional bond. Third, store operation management, finance operation management, human resource management, and marketing management affected the prescriptive bond. Fourth, calculated bond and prescriptive bond had an effect on re-contract intention. Conclusions - As stated above, in franchise management, parent companies' offer and instruction of core competence to their franchisees as an information resource could improve the relational bond by helping them grow together through the resource sharing. Consequently, core competence factors were promoting factors that could improve franchisees' re-contract intention for a long time.