• 제목/요약/키워드: interest on science-related topics

검색결과 57건 처리시간 0.026초

Changes in the Cultural Trend of Use by Type of Green Infrastructure Before and After COVID-19 Using Blog Text Mining in Seoul

  • Chae, Jinhae;Cho, MinJoon
    • 인간식물환경학회지
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    • 제24권4호
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    • pp.415-427
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    • 2021
  • Background and objective: This study examined the changes in the cultural trend of use for green infrastructure in Seoul due to COVID-19 pandemic. Methods: The subjects of this study are 8 sites of green infrastructure selected by type: Forested green infrastructure, Watershed green infrastructure, Park green infrastructure, Walkway green infrastructure. The data used for analysis was blog posts for a total of four years from August 1, 2016 to July 31, 2020. The analysis method was conducted keyword frequency analysis, topic modeling, and related keyword analysis. Results: The results of this study are as follows. First, the number of posts on green infrastructure has increased since COVID-19, especially forested green infrastructure and watershed green infrastructure with abundant naturalness and high openness. Second, the cultural trend keywords before and after COVID-19 changed from large-scale to small-scale, community-based to individual-based activities, and nondaily to daily culture. Third, after COVID-19, topics and keywords related to coronavirus showed that the cultural trends were reflected on appreciation, activities, and dailiness based on natural resources. In sum, the interest in green infrastructure in Seoul has increased after COVID-19. Also, the change of green infrastructure represents the increased demand for experience that reflects the need and expectation for nature. Conclusion: The new trend of green Infrastructure in the pandemic era should be considered in the the individual relaxations & activities.

국가기록원 유튜브 동영상 콘텐츠 특성에 대한 연구 (A Study on the YouTube Videos Content Characteristics of the National Archives of Korea)

  • 박옥남
    • 한국문헌정보학회지
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    • 제56권4호
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    • pp.515-536
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    • 2022
  • 본 연구의 목적은 국가기록원 유튜브 영상에 나타난 콘텐츠 특성을 분석하는 것이다. 이를 위해 2017년부터 5년 동안 국가기록원이 게시한 324개의 동영상에 대한 키워드, 동영상 관련 데이터, 시청자 반응을 수집하였으며, 소셜 네트워크 분석, 토픽모델링, 내용분석을 수행하였다. 이를 바탕으로 국가기록원 유튜브 영상을 주도하는 주요 키워드, 7개의 대주제 및 20개의 소주제를 확인하고, 유튜브 영상 및 키워드 네트워크 특성을 확인하였다. 또한, 영상의 외형적 특성, 영상편집 및 전달방식, 콘텐츠 등장인물을 확인하였다. 이를 통해 국가기록원 유튜브 영상은 기록관의 기본 기능을 소개하고, 기록물에 대한 시청자의 관심을 유도하기 위하여 장소, 역사, 행사 등의 다양한 주제와 관련한 영상을 게시하고 있음을 알 수 있었다. 그럼에도 불구하고 시청자 반응이 저조하고, 시청자가 흥미를 이끌 수 있는 콘텐츠의 부족, 시청자와 상호작용하거나 의사소통할 수 있는 채널 운영의 부족 등 보완점을 확인하였다. 마지막으로 국가기록원 영상이 더 많은 이용자에게 확산되기 위한 제안으로 연구를 마무리하였다.

Bibliometric analysis and diagnostic efficacy of cone-beam computed tomography studies published in Imaging Science in Dentistry from 2011 to 2022

  • Kelda Zanchi Younan;Gabriel Francisco Krueger;Roberto Zimmer ;Pedro Antonio Gonzalez Hernandez;Vania Regina Camargo Fontanella;Sergio Augusto Quevedo Miguens-Jr
    • Imaging Science in Dentistry
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    • 제53권4호
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    • pp.335-344
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    • 2023
  • Purpose: This bibliometric analysis aimed to provide a comprehensive overview of the characteristics, trends, and level of diagnostic efficacy of studies on cone-beam computed tomography (CBCT) published in Imaging Science in Dentistry (ISD) from 2011 to 2022. Materials and Methods: Publications related to CBCT identified in the electronic collection of ISD were selected according to eligibility criteria by 2 independent reviewers who collected data on the characteristics of the articles (year, authors, and country). The type and topic of studies were analyzed using VOSviewer v.1.6.18 (Centre for Science and Technology Studies, Leiden University, Leiden, Netherlands). The research articles were classified according to the hierarchical scale of diagnostic efficacy. Results: Of the 236 articles included, most were from South Korea and Brazil. Bong-Hae Cho and Yun-Hoa Jung were the most prolific authors on the topic of CBCT. The most frequently published types of studies were cross-sectional and laboratory-based. The most popular topics WERE related to the diagnosis of pathologies and/or alterations, as well as anatomical variations. On the diagnostic efficacy scale, most studies were rated level 1 (technical efficacy) or 2 (diagnostic accuracy efficacy). Conclusion: A steady increase was observed in publications related to CBCT, which are of both clinical and academic interest. The trends in these publications were analyzed, revealing that most are cross-sectional studies primarily exploring the capabilities of CBCT in diagnosing pathologies and/or changes in the oral and maxillofacial complex. These studies were typically classified as level 1 or 2 on the diagnostic efficacy scale.

Analysis of Mathematical Structure to Identify Students' Understanding of a Scientific Concept: pH Value and scale

  • Park, Eun-Jung;Choi, Kyung-Hee
    • 한국과학교육학회지
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    • 제30권7호
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    • pp.920-932
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    • 2010
  • Many topics in science, especially, abstract concepts, relationships, properties, entities in invisible ranges, are described in mathematical representations such as formula, numbers, symbols, and graphs. Although the mathematical representation is an essential tool to better understand scientific phenomena, the mathematical element is pointed out as a reason for learning difficulty and losing interests in science. In order to further investigate the relationship between mathematics knowledge and science understanding, the current study examined 793 high school students' understanding of the pH value. As a measure of the molar concentration of hydrogen ions in the solution, the pH value is an appropriate example to explore what a student mathematical structure of logarithm is and how they interpret the proportional relationship of numbers for scientific explanation. To the end, students were asked to write their responses on a questionnaire that is composed of nine content domain questions and four affective domain questions. Data analysis of this study provides information for the relationship between student understanding of the pH value and related mathematics knowledge.

An International Freshman Exchange Program: A Trial for Engineering Design Education

  • Webeck, Elizabeth;Imamura, Fumihiko;Wang, Fuming;Zhu, Hongmin;Nagasaka, Tetsuya
    • 공학교육연구
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    • 제15권4호
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    • pp.8-13
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    • 2012
  • The Engineering school of Tohoku University has been offering a Team-based Engineering Design Course to its first year students since 1996 in order to increase the level of both motivation and interest in engineering. Freshmen are required to select one of approximately 150 topics and do some research on this topic. This course also provides opportunities for students to participate in exchange programs with the University of Washington (UW) and the University of Science and Technology Beijing (USTB). In the Tohoku-UW exchange program, which began in 1999, between 10 and 25 students of Tohoku visit the UW annually to present the results of the subjects the school has appointed in advance in the Team-based Engineering Design Course. In the Tohoku-USTB exchange program, which began in 2007, about 15 students from each university participate in a one day meeting organized by the students themselves. They give a presentation on either the results of the subject they selected in the course, or on an engineering related topic both groups have agreed to in advance. In this paper, a detailed history, the objectives, a schedule and the budget in these unique exchange programs is introduced together with an outline of the course and its contribution to the engineering design education.

국내 포유류 연구의 주제와 동향 (Mammalian Research Topics and Trends in Korea)

  • 고병준;어수형
    • 한국환경생태학회지
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    • 제31권1호
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    • pp.30-41
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    • 2017
  • 국내에서 포유류는 축산학, 수의학, 실험동물학, 생태학, 유전학 등 다양한 분야에서 활발하게 연구되고 있으며, 최근 생물다양성의 중요성이 강조되면서 이들의 보전 및 관리는 국민적으로도 많은 관심을 받고 있다. 하지만 전문 연구와 국민 관심의 증가에도 불구하고 국내 포유류 연구동향을 파악한 사례는 아직까지 찾아보기 힘들다. 이 연구는 국내 포유류의 연구동향을 파악하여 향후 세부연구영역의 계획과 관련 정책 제시를 위한 기초자료 제공을 목표로 하였다. 2015년까지 국내에서 발행된 포유류 학술논문 392편을 분석 대상으로 하였으며, 최근 각광받는 연구영역을 파악하기 위해 텍스트마이닝과 동시출현단어 분석을 이용하였다. 그 결과, 국내 포유류 연구논문 발행 수는 점차 증가하였으며, 연구대상 종 역시 점차 다양해진 것으로 나타났다. 텍스트마이닝과 동시출현단어 분석을 통해 파악된 주된 포유류 연구영역은 (1)진화/계통/유전학, (2)환경/생태학, (3)발생/생식/세포생물학, (4)기생충/수의학, (5)설치류/기생충학, (6)세균/바이러스학, (7)해부/세포생물/실험동물학, (8)형태/해부수의학, (9)축산학, (10)해양포유류학, (11)익수목 연구 등 11개로 구분되었다. 환경/생태학 연구는 11개 연구영역 중에서 최근 가장 활발하였으며, 과거에 비해 연구비율이 급격히 증가한 분야로 나타났다. 환경/생태학 연구분야는 생물다양성 보전의 핵심으로, 최근 생물다양성의 중요성이 강조됨에 따라 국내 서식 포유류의 생태연구에 대한 연구자들의 관심 역시 더욱 증가한 것으로 보인다. 이 연구결과가 미래 국내 포유류 연구의 계획과 관련 정책 수립을 위한 기초자료로 유용하게 활용되기를 희망한다.

Factors Influencing Corporate Debt Maturity: An Empirical Study of Listed Companies in Vietnam

  • NGO, Van Toan;LE, Thi Lanh
    • The Journal of Asian Finance, Economics and Business
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    • 제8권5호
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    • pp.551-559
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    • 2021
  • The maturity structure of corporate debt is one of the significant financing choices that a firm must make simultaneously while deciding how to finance its operational and investment decisions. Even though the capital structure is one of the scrutinized topics of interest in the corporate finance literature, scarce studies have investigated corporate debt maturity, even less so in the context of emerging markets. The choice of a suitable debt maturity structure is exceptionally relevant for firms. It can enable them to avoid mismatch by aligning assets in line with liabilities, addressing agency-related problems, sidestep the ill effects of cost of capital, and signaling the firms' earning quality and value. The study investigates the firm-specific and macroeconomic determinants significant for the debt maturity structure of Vietnamese corporate firms. A sample of 722 non-financial firms listed on the Ho Chi Minh and Hanoi Stock Exchange in Vietnam from 2007 to 2018 was taken to test the hypothesis. The study's methods fixed effects panel data analysis provides empirical evidence that firm size, firms' quality, liquidity, leverage, asset maturity, tax impact, and macro variables are significantly related to the debt maturity structure.

부동산 정책 관련 트위터 게시물 분석을 통한 대중 여론 이해 (Understanding Public Opinion by Analyzing Twitter Posts Related to Real Estate Policy)

  • 김규리;오찬희;주영준
    • 한국문헌정보학회지
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    • 제56권3호
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    • pp.47-72
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    • 2022
  • 본 연구는 시간의 흐름에 따른 부동산 정책의 주제 동향과 부동산 정책에 대한 대중의 감성 여론을 파악하고자 하였다. 부동산 정책 관련 키워드('부동산정책', '부동산대책')를 이용하여 2008년 2월 25일부터 2021년 8월 31일까지 13년 6개월 동안 작성된 총 91,740개의 트위터 게시물을 수집하였다. 데이터를 전처리하고 공급, 부동산세, 금리, 인구 분산으로 범주화 하여 총 18,925개의 게시물에 대하여 감성 분석과 다이나믹 토픽 모델 분석을 진행하였다. 범주별 키워드는 공급 범주(임대주택, 그린벨트, 신혼부부, 무주택자, 공급, 재건축, 분양), 부동산세 범주(종부세, 취득세, 보유세, 다주택자, 투기), 금리 범주(금리), 인구 분산 범주(세종, 신도시)와 같다. 감성 분석 결과, 한 명이 평균 하나 또는 두 개의 긍정 의견을 게시한 걸로 확인되었고, 부정, 중립 의견의 경우, 한 명이 두 개 또는 세 개의 게시물을 게시한 걸로 확인되었다. 또한 일부 대중들은 부동산 정책에 일관된 감정을 가지고 있지 않고 긍정, 부정, 중립의 의견을 모두 표현하는 것을 유추할 수 있었다. 다이나믹 토픽 모델링 결과, 부동산 투기 세력, 불로소득 주제에 대한 부정적인 반응이 꾸준히 파악되었으며, 긍정적인 주제로는 주택 공급 확대와 무주택자들의 부동산 구입 혜택에 대한 기대감을 확인할 수 있었다. 본 연구는 기존 선행연구들이 특정 부동산 정책의 변화와 평가에 초점을 맞춰 분석한 것과는 달리, 소셜미디어 플랫폼 중 하나인 트위터에서 게시물을 수집하고 감성 분석, 다이나믹 토픽 모델링 분석을 활용하여 부동산 정책 평가자인 대중의 감성과 여론을 알아보고 시간의 흐름에 따른 부동산 정책에 관한 잠재적 주제와 동향을 파악했다는 것에 학술적 의의가 있다. 또한, 본 연구를 통해 부동산 정책에 대한 대중의 여론에 기반한 새로운 정책 제정에 도움을 주려고 한다.

고교 융합형 '과학' 교과서에 대한 학생들의 의견 (High School Students' Opinions about Fusing 'Science' Textbook)

  • 정진수;김동원;임재근;이윤정;김은애;임성만
    • 대한지구과학교육학회지
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    • 제5권2호
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    • pp.189-196
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    • 2012
  • This study was conducted using the phenomenological research method to collect and analyze high school students' opinions about fusing "science" textbook that reflect the 2009 Revised Curriculum. Ninety six students were chosen to be participants from 32 high schools that selected by city and province. The data collection was carried by individual interviews and group discussions. The results are as follow; students' opinions were summarized to 50 themes, and then classified to 9 theme clusters and 2 categories. Students' opinions were divided into a positive position - "it is good because interesting material associated with life", "the structure of textbook is good", "teachers' efforts make class interesting", and "it will help in career choices"- and negative position - "the content is difficult to understand", "the configuration is complex", "I have less interest about it because it doesn't related College Scholastic Ability Test", "teacher's explanation is insufficient", and "it is not associated with career choice"-. The living-related material and story-telling configuration received good reviews from students. On the other hand, the configuration of topics makes many concepts to use, so students have difficulty understanding the content and pointed out the lack of teachers' explanations about unfamiliar areas. In order to solve the difficulties, variety teaching material for fusing "science" will be developed.

The Effects of Total Quality Management and Corporate Social Responsibility on Firm Performance: A Future Research Agenda

  • TSOU, Yu-Hong;HUANG, Yung-Fu;LIU, Su-Chuan;DO, Manh-Hoang
    • The Journal of Asian Finance, Economics and Business
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    • 제8권4호
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    • pp.277-287
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    • 2021
  • This article systematically reviews the adoption of total quality management (TQM) implementation and corporate social responsibility (CSR) initiatives on firm performance. A total of 233 published documents from 1996 to 2020 in international journals have been collected and listed on the SCOPUS database. It aims to fill the existing literature gap regarding TQM and CSR practices and point out a future research agenda. This study employed a systematic literature review approach to review those manuscripts related to TQM, CSR topics focused on firm performance. Consequently, the results stressed that TQM and CSR are excellent tools and have a similarity to support the firms to attain corporate sustainability; however, TQM practices have given more interest than CSR initiatives. Moreover, the results highlighted that only a few articles are interested in simultaneously combining TQM and CSR initiatives although this idea is rising in recent years. Thus, the statistical findings indicated several research gaps that remain unaddressed. It is worthy of considering TQM and CSR integration; however, other scholars need to identify the critical success factors that could enable TQM practices or barriers to CSR adoption. Particularly spending more attention on the transitional economies context, which is considering a promising future research context.