• Journal of Engineering Education Research
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• v.21 no.6
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• pp.90-98
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• 2018

This paper proposes a framework of engineering education for product development processes based on product data management (PDM) software and 3D printing. The PDM software supports the product development process-oriented educational coursework, collaborative team projects and project-based learning environment. The 3D printing supports the prototyping step in the product development process and helps participants consider physical realization of their designs during the product design and development phases. The framework was implemented in an introductory course for engineering students to product design and development, and author found that it is important to support rich communication among participants including lecturers, teaching assistants and students to enhance the quality of education and to overcome the burden of learning various computer-aided tools and 3D printing techniques needed for the framework.

• The Mathematical Education
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• v.22 no.3
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• pp.57-58
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• 1984

• The Mathematical Education
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• v.13 no.3
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• pp.19-21
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• 1975

• The Pure and Applied Mathematics
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• v.13 no.3 s.33
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• pp.189-195
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• 2006

Let R be a prime ring with characteristics not 2 and ${\sigma},\;{\tau},\;{\alpha},\;{\beta}$ be auto-morphisms of R. Suppose that $d_1$ is a (${\sigma},\;{\tau}$)-derivation and $d_2$ is a (${\alpha},\;{\beta}$)-derivation on R such that $d_{2}{\alpha}\;=\;{\alpha}d_2,\;d_2{\beta}\;=\;{\beta}d_2$. In this note it is shown that; (1) If $d_1d_2$(R) = 0 then $d_1$ = 0 or $d_2$ = 0. (2) If [$d_1(R),d_2(R)$] = 0 then R is commutative. (3) If($d_1(R),d_2(R)$) = 0 then R is commutative. (4) If $[d_1(R),d_2(R)]_{\sigma,\tau}$ = 0 then R is commutative.

• Proceedings of the KAIS Fall Conference
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• 2010.11a
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• pp.206-208
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• 2010

본 논문에서는 개발로 인해 변형된 자연환경과 도시의 본래 모습을 3D기반의 환경교육용 가상현실 콘텐츠로 구현함으로써 조선시대의 자연환경과 현재의 자연환경을 비교하여 사용자 스스로 환경변화에 학습하고 오염의 원인과 해결 방안을 모색할 수 있는 콘텐츠를 제작하는데 그 목적이 있다.

• Journal of Korean Elementary Science Education
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• v.37 no.3
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• pp.323-338
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• 2018

The aims of this study are to develop the STEAM program focused '3D printing for respiratory system' and to ascertain its influence on elementary student's science process skills, creative problem solving abilities and scientific interest. The developed STEAM program was applied to 5th grade students of O elementary school located in J city. As a result of applying the STEAM program, the experimental group of the STEAM program class improved significantly in creative problem solving abilities and scientific interest than the control group of the theoretical class. The result of learner satisfaction survey of the STEAM program was high. Meanwhile, there was no significant difference in science process skills between the two groups. Therefore, the STEAM program class with the theme of '3D printing for respiratory system' could be meaningful works to encourage students' interest as well as their creative problem solving ability and scientific interest. In future, continuous and systematic studies on STEAM programs focused on 'structure and function of our body' are needed for elementary students' cognitive and affective developments.

• 한국정보교육학회:학술대회논문집
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• 2009.08a
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• pp.197-204
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• 2009

2003년 미국 IT기업인 린덴랩에서 개발한 3D 가상현실 사이트인 세컨드라이프가 최근 인터넷 서비스 시장에서 큰 주목을 받고 있다. 그 까닭으로는 세컨드라이프가 3D 기반 인터넷 기술과 사용자의 서비스 경향을 충실히 담고 있다는 점과 현실과 밀접히 연결되는 부분을 많이 가지고 있어 현실 세계에 미치는 영향력이 점점 증가세에 있다는 것을 들 수 있다. 최근의 우리나라 교육 현장에서는 다양한 ICT활용 교육을 통하여 학교에서 이루어지는 교과 지도와 생활 지도를 온라인으로 확장하고 있으며, 또한 기술의 발달에 힘입어 모바일 교육과 U-Learning과 같은 새로운 교육 방법과 함께 온라인에서 주목받는 우수한 소프트웨어를 학교현장에 도입하려는 노력을 시도하고 있다. 본 연구에서는 Second Life가 머지않아 교실수업과 인터넷수업을 잇는 매개체로 사용될 것이라 보고 세컨드라이프의 국내외 적용사례를 살펴보고 초등교육에서 활용하기 다양한 방안을 제시하고 장단점을 분석한다.

• Journal of Korea Game Society
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• v.12 no.6
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• pp.5-14
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• 2012

The purpose of this paper is to demonstrate how three-dimensional gesture recognition technology, in children's traffic safety programs, can be an effective solution for instructing children in the safest ways to interact with traffic. In terms of traffic accidents, walking unaccompanied is the most dangerous traffic related activity for children. By using a three-dimensional serous game training program that implements gesture recognition, more accurate real life scenarios can be implemented in existing children's traffic training programs. The implementation of this technology will increase the possibility of changing the habits and attitudes of children, which in turn will lower the amount of walking related traffic accidents in children.

• Research in Mathematical Education
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• v.16 no.1
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• pp.31-50
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• 2012

The present study explored whether the implementation of focused activities (intervention programme) can enhance 22 pre-service mathematics teachers' proficiency in solid geometry thinking level as well as change for the better their feelings in this discipline. Over a period of 6 weeks the pre-service teachers participated in activities and diversified experiences with 3D shapes, using illustration aids and actual experience of building 3D shapes in relation to the various spatial thinking levels. The research objectives were to investigate whether the intervention programme, comprising task-oriented activities of solid geometry, enhance mathematics pre-service teachers' mastery of their geometric thinking levels as well as examine their feelings towards this discipline before and after the intervention programme. The findings illustrate that learners' levels of geometric thinking can be promoted, entailing control on higher thinking levels as well as a more positive attitude towards this field.

• Review of Korea Contents Association
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• v.16 no.1
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• pp.37-40
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• 2018