• 제목/요약/키워드: Topic selection

검색결과 158건 처리시간 0.023초

일반계 고등학교 과학과제 연구 수업의 주제 선정을 위한 실천 매뉴얼 개발 및 적용 (Development and Application of Practice Manual Focused on Science Topic Selection Stage in General High School)

  • 김애라;박다혜;박종석
    • 과학교육연구지
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    • 제42권3호
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    • pp.371-389
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    • 2018
  • 본 연구는 주제 선정부터 결론 도출까지 학생 주도적으로 이루어지는 과학 탐구가 포함된 학생 연구 활동에서 학생과 교사들이 공통적으로 '주제 선정 단계'를 특히 어려워한다는 점에 주목하여 일반계 고등학교에서 '주제 선정 단계'를 중심으로 한 과학과제 연구 수업 실천 매뉴얼을 개발하고자 하였다. 선행연구 및 문헌들을 통해 이론적 기조가 되는 내용들을 추출하고, 추출된 내용이 실제 수업에서 구현될 수 있도록 실천적 지식에 근거하여 4단계 16차시 분량의 수업 매뉴얼을 개발하였다. 각 단계는 <오리엔테이션>, <소논문 리뷰 & 발표>, <다양한 정보원에서 과학 연구주제 찾기>, <최종 과학 연구주제 작성>으로 구성되어 있으며, 특히 3단계 '다양한 정보원에서 과학 연구주제 찾기'에서 영상, 신문기사, 과학잡지, 전통지식, 속담, 일상생활, 교과서 실험 속 연구주제 찾기의 세부 수업 활동을 통해 과학적 의문을 찾고 이를 연구주제로 발전시키도록 한다. 개발된 내용은 경상북도 G시 읍면지역의 일반계 S고등학교 2학년 자연반 학생들에게 적용하였다. 실험반은 개발된 수업 실천 매뉴얼에 따라, 대조반은 기존의 일반적인 과제 연구수업 단계에 따라 수업을 진행하고, 학생들이 작성한 최종 과학 연구주제 작성지, 과학적 문제발견 능력 검사, 과학에 대한 태도 검사, 수업 의견 조사지를 통해 적용된 수업의 결과를 비교 분석하였다. 그 결과 첫째, 실험반에서는 교과서 실험, 속담, 유튜브 영상, 신문 기사, 개인별 WHY NOTE 등 다양한 정보원을 통해 최종 연구주제를 선정했으며, 과학 연구 주제의 조건을 이해하고 연구 제목에 변인을 드러내 표현하였다. 그러나 대조반에서는 일부 학생들이 선정한 연구주제의 연구 범위가 구체적이지 못하거나 학생 수준에서 연구할 수 있는 범위인지를 전혀 고려하지 않고 작성했으며, 학생들에게 자율성을 최대한 많이 부여하다 보니 과제연구 활동의 의미를 제대로 이해하지 못하고 선행 연구물을 그대로 작성해서 제출하는 모둠이 많았다. 둘째, 과학적 문제발견 능력 검사 결과 대조반은14.84점에서 13.40점으로 1.44점 감소했으나(p>.05), 개발된 수업 실천 매뉴얼을 적용한 실험반의 경우 14점에서 25.42점으로 11.42점 증가(p<.05)하며, 하위 영역인 융통성, 정교성, 독창성 모두 점수가 상승함을 보였다. 셋째, 과학에 대한 태도 검사에서도 대조반의 경우 119.38점에서 116.96점으로 사전에 비해 사후 0.42점 감소(p>.05)하였으나, 실험반의 경우 119.80점에서 126.96점으로 10점 증가(p<.05)하는 결과를 보였다. 이와 같은 연구 결과를 토대로 본 연구에서 개발한 '주제 선정 단계' 중심 과제연구수업 실천 매뉴얼은 일반계 고등학교 교사들이 과학과제 연구 수업을 할 때 수업의 안내서 및 지침서로 활용할 수 있으며, 이를 통한 수업은 학생들의 과학적 문제 발견 능력을 향상시키고 과학에 대한 태도를 긍정적인 방향으로 변화시킬 수 있음을 확인하였다.

Qualitative Research in Healthcare: Necessity and Characteristics

  • Jeehee Pyo;Won Lee;Eun Young Choi;Seung Gyeong Jang;Minsu Ock
    • Journal of Preventive Medicine and Public Health
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    • 제56권1호
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    • pp.12-20
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    • 2023
  • Quantitative and qualitative research explore various social phenomena using different methods. However, there has been a tendency to treat quantitative studies using complicated statistical techniques as more scientific and superior, whereas relatively few qualitative studies have been conducted in the medical and healthcare fields. This review aimed to provide a proper understanding of qualitative research. This review examined the characteristics of quantitative and qualitative research to help researchers select the appropriate qualitative research methodology. Qualitative research is applicable in following cases: (1) when an exploratory approach is required on a topic that is not well known, (2) when something cannot be explained fully with quantitative research, (3) when it is necessary to newly present a specific view on a research topic that is difficult to explain with existing views, (4) when it is inappropriate to present the rationale or theoretical proposition for designing hypotheses, as in quantitative research, and (5) when conducting research that requires detailed descriptive writing with literary expressions. Qualitative research is conducted in the following order: (1) selection of a research topic and question, (2) selection of a theoretical framework and methods, (3) literature analysis, (4) selection of the research participants and data collection methods, (5) data analysis and description of findings, and (6) research validation. This review can contribute to the more active use of qualitative research in healthcare, and the findings are expected to instill a proper understanding of qualitative research in researchers who review qualitative research reports and papers.

토픽모델링을 활용한 무역분야 연구동향 분석 (A Study on the Research Trends in Int'l Trade Using Topic modeling)

  • 이지훈;김정숙
    • 무역학회지
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    • 제45권3호
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    • pp.55-69
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    • 2020
  • This study examines the research trends and knowledge structure of international trade studies using topic modeling method, which is one of the main methodologies of text mining. We collected and analyzed English abstracts of 1,868 papers of three Korean major journals in the area of international trade from 2003 to 2019. We used the Latent Dirichlet Allocation(LDA), an unsupervised machine learning algorithm to extract the latent topics from the large quantity of research abstracts. 20 topics are identified without any prior human judgement. The topics reveal topographical maps of research in international trade and are representative and meaningful in the sense that most of them correspond to previously established sub-topics in trade studies. Then we conducted a regression analysis on the document-topic distributions generated by LDA to identify hot and cold topics. We discovered 2 hot topics(internationalization capacity and performance of export companies, economic effect of trade) and 2 cold topics(exchange rate and current account, trade finance). Trade studies are characterized as a interdisciplinary study of three agendas(i.e. international economy, International Business, trade practice), and 20 topics identified can be grouped into these 3 agendas. From the estimated results of the study, we find that the Korean government's active pursuit of FTA and consequent necessity of capacity building in Korean export firms lie behind the popularity of topic selection by the Korean researchers in the area of int'l trade.

초.중학생을 위한 보건교육의 영역 및 주요개념 선정을 위한 일 연구 (A Study on the Selection of Health topic areas and major concepts for Health Education in Primary and Junior High Schools)

  • 이경자
    • 보건교육건강증진학회지
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    • 제7권1호
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    • pp.10-26
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    • 1990
  • In Korean education, the health contents are scattered in various course subjects throughtout the primary and junior high school curriculum. So it is very difficult to provide systematic health education. The purpose of this study was to provide a guide for health education using health topic areas and major concepts that represent the scope of material that should be covered in health instruction. The steps used in selecting these health topic areas and major concepts were as follows: 1. A review of the literature related to health and health education was done to develop the rationale underlying this study. 2. Health topic areas basic to the growth and development characteristics of children, to human needs and to societal needs for healthful living were indentified. 3. The major concepts for each health topic area based on health sciences and children's growth and development levels were selected. 4. The major concepts selected were organized in sequence to guide health education from grade one to grade nine. The results of this study were as follows: 1. The identification of eleven health topic areas essential for health education. These include: personal habits and health healthy growth and development nutrition and health prevention of disease and disorders drugs and health mental health family life and health sex education accident prevention consumer health community health 2. The identification of the major concepts(generalizations) for each health topic area: 33 major concepts were identified as a guide in determining the health content of health education programs. These are 1) body cleaniness, 2) health of the sensory organs, 3) dental health, 4) exercise and rest, 5) growth and development, 6) body structure and function, 7) developmental tasks, 8) balanced nutrition, 9) eating habits, 10) food preparation and food storage, 11) sources of disease and disorders, 12) disease preventive behavior, 13) care during illness, 14) drug use and misuse, 15) drug addiction, 16) emotional responses, 17) human relationship, 18) self concept, 19) social adjustment, 20) health habits of the family, 21) interdependence of family members, 22) origin of life, 23) characteristics of man and woman, 24) sexual instinct, 25) safety behavior, 26) emergency measures, 27) criteria for selection of health products, 28) proper use of health information, 29) utilization of health and medical services, 30) environmental conservation, 31) environmental pollution, 32) population control, 33) function of public health services. 3. The organization of the concepts(generalizations) in sequence and for continuity in health instruction at the primary and junior high school level.

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A Case Study of Source Selection and Evaluation by Using the Analytic Hierarchy Process

  • Lee, Nam-Yong
    • 한국전자거래학회:학술대회논문집
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    • 한국전자거래학회 2000년도 종합학술대회발표논문집
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    • pp.207-214
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    • 2000
  • Over the last several decades, the topic of the source selection and evaluation has gained a great attention in the information systems community as an effective tool to acquire information systems in an organization. The source selection and evaluation process is a multiple-criteria decision-making problem associated with several evaluation issues. In this case study, evaluation issues include management, technologies, logistics, and cost. This case study was conducted to compare a new source selection and evaluation process by using the analytic hierarchy process with the traditional approach. This study provides useful insight about how to apply the analytic hierarchy process technique to the traditional approach.

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How do learners discover the topic in team project-based learning?: Analysis of Learners' Creative Activity in the process of selecting the topic

  • Kim, Hyekyung;Kim, Insu
    • Educational Technology International
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    • 제14권2호
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    • pp.167-187
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    • 2013
  • Team project learning is a type of Project-Based Learning, which is an effective learning method for developing collaborative competency and interpersonal communication skills, as well as for developing cognitive competency such as critical thinking, creative thinking, and analytical skills. This research, conducted to analyze learning activities, focuses on students' creative thinking and activities in TPBL(Team Project-Based Learning). A qualitative approach including a reflective journal based on the 6 stages of TPBL, was adopted for this purpose. In this study, 69 reflective journals on the three stages (developing a theme, researching, theme-making) of 23 undergraduate students were categorized on the basis of three criteria: divergent thinking factors, convergent thinking factors and affective factors. The results show that the participants' journals demonstrated twenty-eight activities from nine cognitive factors and nine activities from three affective factors were derived from reflect journal. This finding indicates that more appropriate instructional strategies are needed for students to enhance their creative thinking skills and activities

전철용 IGBT 모듈 설계연구 (Traction IGBT Modules Design Issues and Precautions)

  • 데버랜전고팔;노영환;김윤호
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2008년도 춘계학술대회 논문집
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    • pp.1853-1859
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    • 2008
  • IGBT modules are designed for low loss, rugged for all environments and user friendly. Low on state saturation voltage with high switching speed is the primary concerns. In this paper selection of IGBT, module ratings and characteristics are discussed. The IGBT design topic of protection against over voltage and over current are covered. Emphasis on turn off switching, short circuit switching and necessary precautions are dealt. Selection of IGBT device, gate drive power, and its lay out considerations are covered in detail.

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Prediction of Auditor Selection Using a Combination of PSO Algorithm and CART in Iran

  • Salehi, Mahdi;Kamalahmadi, Sharifeh;Bahrami, Mostafa
    • 유통과학연구
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    • 제12권3호
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    • pp.33-41
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    • 2014
  • Purpose - The purpose of this study was to predict the selection of independent auditors in the companies listed on the Tehran Stock Exchange (TSE) using a combination of PSO algorithm and CART. This study involves applied research. Design, approach and methodology - The population consisted of all the companies listed on TSE during the period 2005-2010, and the sample included 576 data specimens from 95 companies during six consecutive years. The independent variables in the study were the financial ratios of the sample companies, which were analyzed using two data mining techniques, namely, PSO algorithm and CART. Results - The results of this study showed that among the analyzed variables, total assets, current assets, audit fee, working capital, current ratio, debt ratio, solvency ratio, turnover, and capital were predictors of independent auditor selection. Conclusion - The current study is practically the first to focus on this topic in the specific context of Iran. In this regard, the study may be valuable for application in developing countries.

토픽모델링과 딥 러닝을 활용한 생의학 문헌 자동 분류 기법 연구 (A Study of Research on Methods of Automated Biomedical Document Classification using Topic Modeling and Deep Learning)

  • 육지희;송민
    • 정보관리학회지
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    • 제35권2호
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    • pp.63-88
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    • 2018
  • 본 연구는 LDA 토픽 모델과 딥 러닝을 적용한 단어 임베딩 기반의 Doc2Vec 기법을 활용하여 자질을 선정하고 자질집합의 크기와 종류 및 분류 알고리즘에 따른 분류 성능의 차이를 평가하였다. 또한 자질집합의 적절한 크기를 확인하고 문헌의 위치에 따라 종류를 다르게 구성하여 분류에 이용할 때 높은 성능을 나타내는 자질집합이 무엇인지 확인하였다. 마지막으로 딥 러닝을 활용한 실험에서는 학습 횟수와 문맥 추론 정보의 유무에 따른 분류 성능을 비교하였다. 실험문헌집단은 PMC에서 제공하는 생의학 학술문헌을 수집하고 질병 범주 체계에 따라 구분하여 Disease-35083을 구축하였다. 연구를 통하여 가장 높은 성능을 나타낸 자질집합의 종류와 크기를 확인하고 학습 시간에 효율성을 나타냄으로써 자질로의 확장 가능성을 가지는 자질집합을 제시하였다. 또한 딥 러닝과 기존 방법 간의 차이점을 비교하고 분류 환경에 따라 적합한 방법을 제안하였다.

Selection of a Grammatical Subject in English Correlative Conjunction Phrases: An Optimality-Theoretic Approach

  • Khym, Han-Gyoo
    • International Journal of Advanced Culture Technology
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    • 제5권4호
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    • pp.44-50
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    • 2017
  • The topic of selection of a grammatical subject in a correlative conjunction phrase has long failed to attract the attention of linguists due to some difficulties not only in figuring out the internal structure of NP's conjoined by a correlative conjunction but also in its heavy dependency on the representational aspects each correlative conjunction demonstrates. In this paper, I have explored the seemingly complex patterns in the selection of a grammatical subject in a correlative conjunction phrase in the frame of the Optimality Theory (Prince & Smolensky 1993, 2008). I show that, with the help of three newly developed constraints such as MinDist, Focus, and PARSE which are ranked relatively to each other, an optimal grammatical subject out of two NP candidates conjoined by a correlative conjunction can be correctly selectable.