• 대한수학교육학회지:수학교육학연구
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• 제12권3호
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• pp.409-424
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• 2002

The historico-genetic principle has been advocated continuously, as an alternative one to the traditional deductive method of teaching and learning mathematics, by Clairaut, Cajori, Smith, Klein, Poincar$\'{e}$, La Cour, Branford, Toeplitz, etc. since 18C. And recently we could find various studies in relation to the historico-genetic principle. Lakatos', Freudenthal's, and Brousseau's are representative in them. But they are different from the previous historico- genetic principle in many aspects. In this study, the previous historico- genetic principle is called as classical historico- genetic principle and the other one as modern historico-genetic principle. This study shows that the differences between them arise from the historical views of mathematics and the development of the theories of mathematics education. Dewey thinks that education is a constant reconstruction of experience. This study shows the historico-genetic principle could us embody the Dewey's psycological method. Bruner's discipline-centered curriculum based on Piaget's genetic epistemology insists on teaching mathematics in the reverse order of historical genesis. This study shows the real understaning the structure of knowledge could not neglect the connection with histogenesis of them. This study shows the historico-genetic principle could help us realize Bruner's point of view on the teaching of the structure of mathematical knowledge. In this study, on the basis of the examination of the development of the historico-genetic principle, we try to stipulate the principle more clearly, and we also try to present teaching unit for the logarithm according to the historico- genetic principle.

• 혜화의학회지
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• 제20권1호
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• pp.137-142
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• 2011

Objective : The purpose of this study was to review on the need for early screening of scoliosis. Methods : We have researched and analyzed theories and literatures of scoliosis screening program. Result : The following results were obtained in this study. 1. Scoliosis screening should be carried out to improve middle and high school students's health and learning abilities. 2. The methods are the forward bending test, Moire test and X-Ray. 3. After the examination held by differentiating the degree of scoliosis, surgery or brace treatment for students should be carried out. 4. After the examination, appropriate acupuncture, exercise therapy and orthodontic treatment for students should be carried out. 5. Spinal health courses for young people should be held regularly to equip and encourage a healthy body and healthy mind and contribute to improve the learning efficiency. Conclusion : Scoliosis screening and early detection should be done in the Daejeon city middle school or high school students, and appropriate treatment should be performed as soon as possible.

• 한국과학교육학회지
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• 제11권2호
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• pp.49-65
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• 1991

There is now a large body of research which investigate the preconceptions held by the students in a variety of school levels ranging from the elementary schools to the universities. A problem exists, however, in applying the fingings of the research to the practices of science education. Meanwhile the field of science education is in urgent need of the new instructional theories. One viable means of improving such problematic situation as this is to develop the teaching/learning materials which incorporate the suggestions implied by the results of the research. A prosedure for developing an instructional material and the application of the material in the naturalistic classes are described. Also described in this article are the analyses of the effectiveness of the materials and the implications of this developmental study for the teaching strategies of science.

• 정보교육학회논문지
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• 제5권2호
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• pp.258-267
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• 2001

본 논문에서는 수업 유형별 교수-학습원리와 학습성과 영역별 수업원리 그리고 학습자의 특성을 적절히 반영한 웹 코스웨어의 평가 준거를 설정하고, 타당성과 신뢰성 그리고 객관성을 검증하였다. 또한, 인터넷 상에서 평가가 이루어지도록 평가 도구를 개발한다. 본 논문에서 개발된 웹 코스웨어 평가 도구는 우수한 웹 코스웨어 개발의 방향과 지침을 제시해 주며, 평가 결과가 인터넷 상에 게시됨으로써 학습자들이 우수한 웹 코스웨어를 선택하는데 많은 도움을 줄 것이다.

• 한국과학교육학회지
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• 제23권4호
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• pp.386-400
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• 2003

This paper presents an analysis of the Developmental Approaches in Science, Health and Technology (DASH) program, a K-6 curriculum developed by the Curriculum Research & Development Group (CRDG) at the University of Hawaii employing the curriculum analysis framework created by Posner. Using this framework the analyst found that the DASH design is based on the research on learning, teaching, and assessment now driving efforts to reform science education at the elementary level. DASH embraces the constructivist idea that learning is a personal and social process and the recapitulation model that new concepts are built out of theories previously learned. DASH provides an understandable, exciting, and memorable experience in the operations of science, health, and technology, and develops their capacity to use the skills and knowledge of science, health, and technology both in and outside school. A number of studies of DASH have examined its functionality, effectiveness of pedagogy and what students learn. The innovative nature of DASH necessitated a multidimensional assessment that included both quantitative and qualitative research techniques. Ongoing development of the DASH program in the research setting of a university laboratory school permits ever deeper connections with emerging curriculum theory and curriculum practice, and allows new linkages as ideas are tested in research classrooms.

• 컴퓨터교육학회논문지
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• 제13권2호
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• pp.59-70
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• 2010

이 연구는 웹 2.0 도구의 교육적 활용에 대한 연구 동향을 분석하고, 이를 토대로 미래 연구를 위한 방향을 제시하는 데에 그 목적이 있다. 이 연구에서 설정한 웹 2.0 기반 학습환경의 속성과 논문 선정 기준을 토대로, 총 60개의 국내외 연구 논문을 선택하여, 연구대상, 연구주제, 활용된 웹 2.0 도구의 유형, 교육이론, 연구방법의 측면에서 분석하였다. 분석 결과, 웹 2.0 도구를 활용한 교육연구는 주로 대학생을 대상으로, 정보공유와 성찰을 지원하기 위한 협력상황에서 수행되어 왔다. 몇몇 연구들에서 논의된 교육이론은 협력학습, 문제중심학습 등과 같은 구성주의적 관점과 연계되며, 연구방법은 질적연구방법과 통합방법연구가 가장 많이 적용되었다. 후속연구를 위해서 연구대상의 확대, 협력상황에서의 지식구성 지원, 다양한 교육이론의 적용 등에 대하여 논의하였다.

• 한국컴퓨터산업학회논문지
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• 제3권8호
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• pp.1117-1128
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• 2002

본 논문에서는 멀티미디어를 이용한 가장 효율적인 교수 방법을 제시한다. 공학적 연구성과를 근원으로 하는 멀티미디어와 멀티미디어 컨텐츠를 교수방법에 적용하기 위해 우선 개념 규정과 교육적 기대효과를 추론한다. 멀티미디어를 이용한 교수방법에 대하여 본 논문에서는 다음의 4가지를 제시한다. 첫째, 지시에 의한 학습을 위한 교수방법. 둘째, 안내에 의한 발견 학습을 위한 교수방법, 셋째, 수용적 학습을 위한 교수방법. 넷째, 탐색적 학습을 위한 교수방법 등이다. 향후의 과제로서는 교수 설계 원리와 이론적 고찰을 멀티미디어 기반 수업에 적용할 수 있도록 일선 교육현장에서 보다 효과적인 교수방법을 선택하여야 할 것이다.

• 지식경영연구
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• 제19권1호
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• pp.97-118
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• 2018

The finance-investment industry is currently focusing on research related to artificial intelligence and big data, moving beyond conventional theories of financial engineering. However, the case of equity optimization portfolio by using an artificial intelligence, big data, and its performance is rarely realized in practice. Thus, the purpose of this study is to propose process improvements in equity selection, information analysis, and portfolio composition, and lastly an improvement in portfolio returns, with the case of an equity optimization model based on quantitative research by an artificial intelligence. This paper is an empirical study of the portfolio based on an artificial intelligence technology of "D" asset management, which is the largest domestic active-quant-fiduciary management in accordance with the purpose of this paper. This study will apply artificial intelligence to finance, analyzing financial and demand-supply information and automating factor-selection and weight of equity through machine learning based on the artificial neural network. Also, the learning the process for the composition of portfolio optimization and its performance by applying genetic algorithms to models will be documented. This study posits a model that the asset management industry can achieve, with continuous and stable excess performance, low costs and high efficiency in the process of investment.

• 한국학교수학회논문집
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• 제2권1호
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• pp.121-131
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• 1999

Recently our educational methodologies have been changed to an open, student-centered structure. Mathematics is now learned through experiential interaction and less emphasis is placed on abstract theories. For example, the axioms of the geometry in the middle school curriculum have been expressed by using symbolic letters. Students find these abstractions very difficult and it hinders their ability to grasp the significance of geometrical concepts. In an effort to simplify these abstract concepts and enhance the students interest and ability to learn, the GSP (Geometry Sketchpad) is proving to be a useful and effective tool. First, Second and third grade students have found the GSP to be extremely useful. While the pad has no sound function it still enables the students to freely change diagrams without disrupting the integrity of the program. There is also a running order of instructions at the bottom of the screen to facilitate the step by step understanding of mathematical procedures. This function makes the program ideal for use by teachers, students and even beginners. Anyone experiencing difficulty can get immediate assistance from the guidebook which is located at the back of each program. Allowing individuals to manipulate and actually see the changing deductions and axiom proofs on the computer screen provides them with immediate feedback and reinforcement. It also enhances their overall interest in learning geometry. The use of the GSP is proving to be an innovative and effective tool in facilitating the transition of mathematics into an open, student-centered educational forum.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2002년도 하계학술대회 논문집 D
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• pp.2625-2627
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• 2002

A virtual laboratory for measurement and instrumentation must aim to realize an integrated environment. To achieve this goal, we designed and implemented a client/server distributed environment and developed a web-based virtual laboratory system for electronic circuits. The proposed virtual laboratory system is composed of four important components : Principle Classroom, Virtual Experiment Classroom, Evaluation Classroom and Overall Management System. Through our virtual laboratory, the learners will be capable of learning the concepts and theories related to electronic circuit experiments and how to operate the experimental equipments. Also, every activity occurred in our virtual laboratory is recorded on database and printed out on the preliminary report form. All of these can be achieved by the aid of the Management System. The database connectivity is made by PHP and the virtual laboratory environment is set up slightly differently for each learner. Finally, we have obtained several affirmative effects such as reducing the total experimental hours and the damage rate for experimental equipments and increasing learning efficiencies as well as faculty productivity.