• Journal of Engineering Education Research
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• v.2 no.1
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• pp.10-16
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• 1999

In this paper, we developed the internet-based educational software package (DVLab) for design and virtual experiment of the digital logic circuits. The DVLab consists of the LogicSim module for design and simulation of digital combinational/sequantial logic circuits, micro-controller application circuits and the BreadBoard module for virtual experiment and the Theory module for lecture and the Report/ReportChecker module and some other utility modules. All developed modules can be run as application programs as well as applets in the Internet. The LogicSim and the BreadBoard support real time clock function, output verification function on the designed circuits, trace function of logic values, copy-protection function of designed circuits and provide various devices including logic gates, TTLs, LED, buzzer, and micro-controller. The educational model of digital logic circuit design and experiment using the DVLab is also presented in this paper.

• Journal of Internet Computing and Services
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• v.17 no.3
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• pp.33-43
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• 2016

In this study, 3D-image based course material has been suggested as a potential pedagogical tool for laboratory courses for aviational maintenance in vocational high schools. With a special focus on assembly/disassembly of the combustion chamber, 3D contents described here are created by Soildworks 2014 based on the textbook widely used in aviational high schools. By analyzing several textbooks currently adopted at various schools, we have clearly shown that the current text-based teaching method is far from being effective regarding providing adequate learning environment for high school students who study aviational maintenance. From the analysis of the conventional textbooks, it is seen that it is urgent that we should come up with more effective and efficient way of teaching methods for these topics at vocational high schools. Using Solidworks, we have developed very vivid 3D image-based course material for topics related to a combustion chamber in the airplane. Newly developed 3D material is seen to clearly show step by step procedures of assembly and disassembly of the combustion chamber which has crucial importance in the aviational laboratory courses. Especially the transparent feature in Solidworks could make it possible to observe the parts covered by outer casing, which can not be seen even in any laboratory class with real objects. 3D animated views could provided unprecedented learning environment for students to acquire core knowledge with ease for the maintenance of a combustion chamber. In order to provide easy access for students to this 3D-based course material, the exclusive viewer is also developed using MS office powerpoint 2007. An example of a learning plan using 3d course material is suggested as well.

• Proceedings of the Korea Multimedia Society Conference
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• 2004.05a
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• pp.741-744
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• 2004

원격 교육시스템의 구현은 인터넷의 기술의 급격한 발전과 함께 활발하게 연구가 진행 되고 있다. 공학 분야에서 원격 교육시스템을 구현하는데 가장 큰 제약사항은 하드웨어의 제어이다. 본 연구에서는 8051 원격 컴파일 시스템을 구현하였으며, 시스템의 구성은 학습자가 웹에서 8051실습 키트를 직접 제어해보며 학습하도록 할 것이다. 학습자는 C언어와 어셈블리어로 8051제어 소스를 작성하고 작성된 소스 파일을 서버에 업로드 하여 컴파일 및 링크할 수 있다 이 과정을 통해 생성된 실행파일을 서버에 연결되어있는 8051 실습키트에 다운로드하여 실행하도록 구현하였다. 또한, 실링 결과의 확인은 웹 카메라를 통해 학습자의 PC에 영상데이터를 전송하여 8051키트의 동작을 학습자들이 확인하게 된다.

• Communications of Mathematical Education
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• v.24 no.4
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• pp.843-864
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• 2010

To get an undergraduate degree from mathematics education department, a student not only take a general educational technology course from education department, but also take an educational technology in mathematics education course from mathematics education department. We believe that these two courses can be integrated for preparing better mathematics teachers. For this purpose, we design an educational technology tool called JavaMAL microworld, and study strategy to integrate two courses harmoniously. This kind of approach is good for internationalization of researches on mathematics education by Korean researchers since most SSCI journal prefer an integrated approach in the educational technology related papers. In short, integrating general educational technology course and educational technology in mathematics education course is not only good to student but to professors. But just integrating two courses is not enough. Students must understand the needs and the usefulness of educational technology tool in the learning and teaching of mathematics, and must have such experience from their mathematics courses.

• Proceedings of the Korea Multimedia Society Conference
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• 2003.11b
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• pp.553-556
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• 2003

사회과학 학문을 공부하는 학생들은 현상을 분석하고 미래를 예측하는 기법으로 통계를 많이 사용하고 익혀야 한다. 본 연구에서는 맹목적으로 수치를 다루는 회계 및 통계 학습에서 벗어나 멀티미디어로 흥미를 유발시키고 인터넷상에서 학생들이 직접 실습을 할 수 있는 환경을 구축하여 회계 통계 학습에 도움을 주어 실제 산업체에 적용 가능한 지식을 주고자 한다. 본 연구는 사회과학의 분야에서 어떠한 형태의 자료를 입력하여도 사용자가 바라는 통계를 얻도록 하는데 주안점을 두고 있다. 개발된 멀티미디어 콘텐츠를 통하여 이루어진 학습에 대하여 효과를 측정하여 멀티미디어 기술을 활용한 사회과학 통계교육에 어떤 효과가 있는지를 분석하고자 한다.

• Journal of Internet of Things and Convergence
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• v.2 no.3
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• pp.1-6
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• 2016

This paper aims to present the physical computing learning model applicable in teaching the information and communication technology for technology and engineering education. This model is based on the physical computing and deals with the information creation and information transfer in one framework, thus provides students with the total understanding and practice opportunity about information and communication. The proposed learning models are classified into the client-server based model and the web based model. In the implemented learning model, the acquirement and control of information is performed by sketch on Arduino and the communication of information is performed by the Python socket on Raspberry Pi well known as an education platform. Our proposed learning model can be used for teaching students to understand the concept of Internet of Things (IoT), which provides us with world wide control and communication of information.

• Journal of Engineering Education Research
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• v.3 no.2
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• pp.14-23
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• 2000

This paper is concerned with the development of remote engineering laboratory using the internet. Recently, various virtual laboratories are introduced using the multimedia technologies but the internet laboratory using the real hardware system is not present. In this study, we developed the remote engineering laboratory by combining the GPIB program which controls the hardwares with the web programming which controls the internet. The function generator, LCR meter, and oscilloscope were considered as the measurement devices. The client program includes the user-interface which carry out experiment remotely. Several electrical experiments were set up to verify the experimental process. It has been found that the remote engineering experiments are feasible and valid. The methodologies will be discussed in detail.

• Journal of Engineering Education Research
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• v.8 no.1
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• pp.71-83
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• 2005

This paper presents an internet-based self-learning educational system which can be enhancing efficiency in the learning process of Java language. The proposed self-learning educational system is called Java Web Player(JWP), which is a Java application program and is executable through Java Web Start technologies. Also, three important sequential learning processes : concept learning process, programming practice process and assessment process are integrated in the proposed JWP using Java Web Start technologies. This JWP enables the learners to achieve efficient and interesting self-learning since the learning process is designed to enhance the multimedia capabilities on the basis of various educational technologies. Furthermore, internet-based on-line voice presentation and its related texts together with moving images are synchronized for efficient language learning process. Also, a simple and useful Java compiler is included in the JWP for providing language practice environment such as coding, editing, executing and debugging Java source files. Finally, repeated practice can make the learners to understand easily the key concepts of Java language. Simple multiple choices are given suddenly to the learners while they are studying through the JWP and the test results are displayed on the message box. This assessment process is very essential to increase the learner's academic capability.

• Proceedings of the KIEE Conference
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• 2005.07a
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• pp.124-126
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• 2005

최근 산업현장 뿐 아니라 일반가정에서도 고도의 자동화 및 정보화 기기의 사용이 급증하고 있어, 전력품질의 고급화가 그 어느 때보다 절실히 요구되고 있다. 이 요구를 만족시키기 위하여 전력품질 향상을 위한 노력이 필요하다 이를 위해서는 전력품질을 측정하고 분석하는 기기의 개발과 함께 이를 운영하는 인력의 양성이 무엇보다 중요하다. 본 논문에서는 전력품질 분석기술 인력양성을 위한 방안의 하나로 인터넷을 이용하여 어느 곳에서나 현장실습과 같은 효과를 얻을 수 있는 웹기반의 e-learning 시스템을 구현하는데 목적을 두었다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.11a
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• pp.1173-1176
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• 2008

프로토콜 분석기는 어플리케이션 성능 관리나 트래픽 분석을 위해 인터넷의 각 계층별 프로토콜을 분석해주는 소프트웨어 툴로서 기업에서는 많이 쓰이고 있다. 그러나 대부분의 학교에서는 아직도 네트워크 강의가 교과서 중심의 이론 위주 교육으로 실시되고 있다. 본 논문에서는 각 계층별 프로토콜의 동작원리를 강의할 때 마다 온라인으로 프로토콜 분석기를 사용하여 스스로 실습을 통해 학습 효과를 높일 수 있도록 BL기반의 학습 시스템을 설계 하였다.