• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2004.04a
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• pp.547-550
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• 2004

현대사회를 정보화 사회라고 한다. 교과서나 교사에 의해 독점되던 지식은 다양한 출판물과 전파매체를 통해서 무차별적으로 전달되고 있다. 20세기가 출판문화의 시대였다면 21세기는 전자, 전파 매체가 주도하는 정보의 시대인 것이다. 이러한 변화에 따라 교육 현장에서도 열린교육의 핵심인 개별화 교육이 강조되고 있으며 컴퓨터의 교육적 활용에 무한한 가능성을 인지하고, 이를 교수-학습에 적용하려는 시도가 끊임없이 전개되고 있다. 본 논문에서는 개별화 교육의 일환으로 교수-학습 현장에 컴퓨터와 웹을 접목한 대화형 교육방송 시스템 설계와 구현에 관하여 연구하고자 한다. U 기술을 이용하여 수업교재를 제작하고, 이를 기반으로 서버를 구축하여 원격지에서 다양한 학습자들이 시간과 장소에 구애받지 않고 학습할 수 있는 대화형 교육방송 시스템에 관하여 연구하였다.

• Proceedings of the KIPE Conference
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• 2003.07a
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• pp.197-200
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• 2003

실시간 시뮬레이션이란 시뮬레이션 모델의 시간진행을 실시간에 기반하여 수행하는 시뮬레이션을 말한다. 이러한 시뮬레이션은 가상 운전 교육 프로그램으로 자주 사용되며, 실제로 이를 이용한 교육 훈련 프로그램이 많이 개발되고 있다. 발전소와 같은 대규모 시스템에서는 서로 다른 계통별로 나누어 시뮬레이션 모델링 후 하나의 시스템 안에 통합 시키는 방법으로 사용한다. 본 논문에서는 실제 고리 $\#$1호기 원자력 발전소의 상태와 유사한 시뮬레이터 개발을 통하여, 운전원에게 가상 시뮬레이션 교육용 Simulator로 제작되었던 일부 계통인 Nuclear Instrumentation System에 관련하여 개발된 사례를 서술하고 있다.

• Journal of Engineering Education Research
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• v.4 no.1
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• pp.20-25
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• 2001

This paper presents the practical implementation methodology of a web-based Virtual Laboratory in the field of electrical and electronic engineering, in which efficient self-learning can be available due to high interactivities between a teacher and a learner. Now that the proposed Virtual Laboratory is composed of 3 learning classrooms and their management system, the learners can understand easily the several important electrical concepts and make an experiment in the cyberspace through simple mouse manipulations. The results of this research are to allow the implementation of an efficient Virtual Laboratory system, and are also expected to make a contribution to the activation of educational system in cyberspace.

• The Journal of Korean Society for Radiation Therapy
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• v.20 no.2
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• pp.123-130
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• 2008

Purpose: To provide practical education, most universities should be equipped with medical appliances in need. As compensatory measures, Gimcheon College has produced in-house dummy linac and dummy accessories, we are going to report efficiency and its usage. Materials and Methods: Dummy linear accelerator (DLINAC-001) has the same mechanical functions as rotation of gantry and collimation in linear accelerator. In addition, to maximize practical education, we have produced and utilized in-house custom blocks, wedge filters, electron cones and head rests. Results: The in-house produced linear accelerator with the same mechanical functions as the linear accelerator, DLINAC-001 can be effectively used in practicing diverse medical instruments. Conclusion: We have produced dummy linear accelerators and dummy accessories and utilized them in practice classes, which can provide the students with clinical training in diverse fields. Consequently, the students exposed to the maximized educational effectiveness can be easily equipped with the practical competence required in real clinical fields.

• Journal of Practical Engineering Education
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• v.10 no.1
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• pp.17-24
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• 2018

Through the design and production of works for the third semester as a major unit, It is proposed the process of satisfying the graduation standards with the design and production process of the drone which can be applied to various mobile environments. Using the shape of Ring Propeller, it is made to be able to play both the role of generating lift as a propeller and the role of a wheel that touches the ground through the surface of the rim. In addition, the Servo Motor is used to convert the drive shaft of the motor to the correct angle according to the command. Then, based on the idea, the 3D printing is implemented to confirm the result of the configuration, and the circuit for driving the propulsion is designed and manufactured. As a result, the conversion of the desired propulsion system during air navigation and operation failed due to the weight increase of the propellant. It is confirmed that the size of the thrust and the tolerance limit of the ring propeller are the errors. Through these processes, it has been recognized to have experience of creative thinking and cooperation through engineering approach and comprehensive design, and confirmed to satisfy the graduation criteria by writing an engineering paper on the result.

• Journal of the Semiconductor & Display Technology
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• v.21 no.2
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• pp.25-31
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• 2022

By an aid of needle coating, we have fabricated a spherical microlens array using poly(methyl methacrylate) for potential applications in light extraction of organic light-emitting diodes. With an attempt to achieve high-density and high-aspect-ratio microlens arrays, we have investigated the coating behaviors by varying the material parameters such as the solute concentration and wettability of the poly(methyl methacrylate) solution and process parameters such as the dwell time of needle near the substrate, retract distance of needle from the substrate, and coating gap between the needle and substrate. Under the optimized coating conditions, it is demonstrated that high-aspect-ratio microlens arrays can be obtained using a coating solution with high solute concentration and a small amount of a hydrophobic solvent. It is found that the diameter and height of microlens array are decreased with increasing poly(methyl methacrylate) concentration, yet the overall aspect ratio is rather enhanced. By the addition of 5 wt% hexylamine in 35 wt% poly(methyl methacrylate) solution, we have achieved a spherical microlens with the height of 7.7 ㎛ and the width of 94.24 ㎛ (the aspect ratio of 0.082). To estimate the capability of light extraction by the microlens array, we have performed ray tracing simulations and demonstrated that the light extraction efficiency of organic light-emitting diode is expected to be enhanced up to 24%.

• The Journal of Korean Association of Computer Education
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• v.4 no.1
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• pp.53-64
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• 2001

As the question patterns have been created in the point of a programer's view, the research for evaluating the internet learning material has been made with the primary consideration to the reliability of information and the plan of interface. Then, the convenience and usability of learners has not been regarded most. As this research is for realizing the recent problem and solving it, this research was made an effort to create the evaluation method for using it practically by teachers and students. In this research, when people design the class with using the Internet and students surf on the Internet for searching for learning materials, 80 items of evaluation standards for E-textbook on Web were prepared. Then, the result of this research will be used to evaluate E-textbooks being made indefinitely later. And Electronic textbook evaluated with the 80 items will be offered meaningful to students and teachers and help to increase the students' learning ability.

• Journal of Digital Contents Society
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• v.2 no.1
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• pp.1-7
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• 2001

The authoring systems for digital contents using multimedia technologies ate requested in many fields such as education, medical science, entertainment market e-commerce and etc. Especially, the emergence of cyber universities and the rapid expansion of on-line education market require the effective contents authoring systems, which have various functions to generate the qualified contents. Therefore, many systems arc developed and currently used. However, since the developed systems considered only the developer's convenience, the generated digital contents by using these systems are failed to draw tile users'(or learners') active interaction with contents. That is, since the users just watch the contents like watching a drama or a film, it causes many problems in delivering the contents effectively or in evaluating the users. This paper presents, develops, and implements the new contents authoring system by using programing languages and/or software tools. The presented, developed, and implemented system mimics the face-to-face education in off-line system, induces the users' active interaction with contents, and continuous evaluation to the users.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2002.05c
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• pp.237-241
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• 2002

전력선과 조명등을 이용한 음향전달 시스템을 구성하여 어학실습 교육용으로의 활용 가능성을 평가하였다. 음성신호를 변조하여 전력선에 실어 보내는 송신기와 조명등의 빛으로부터 음성신호를 검출하여 이어폰 또는 헤드폰 둥으로 들을 수 있는 수신기로 구성하였다. 제작한 송신기와 수신기의 주파수 특성과 스펙트럼분석을 하였다. 스피커로 출력되는 음질상태는 최적상태는 아니지만 음성이나 노래 등을 이용한 어학실습 교육용으로는 충분한 수준이 었다.

• Proceedings of The KACE
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• 2018.08a
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• pp.67-70
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• 2018

블록체인 기술은 4차 산업혁명 시대를 이끌어 나갈 핵심기술로 거론되고 있으며 높은 보안성을 장점으로 가상화폐, 사물인터넷, 등 다양한 분야에서 활용되고 있다. 본 연구는 캠퍼스 내에서 진행되는 투표를 위한 전자투표시스템을 제작하고, 보안성을 강화하기 위해 블록체인기술을 활용하였다. 기존의 분산원장네트워크를 활용하는 방식과 달리, 소규모 투표에 적합하도록 개인 간의 가상화폐 거래과정을 활용한 투표시스템을 구축하였다. 이를 통해 기존의 블록체인기술기반 전자투표시스템의 단점인 초기 서버구축비용의 소요를 줄일 수 있을 것으로 기대한다.