• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1995.10a
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• pp.605-608
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• 1995

• Journal of the Korean GEO-environmental Society
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• v.7 no.1
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• pp.67-80
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• 2006

This paper presented an application of the geotechnical hybrid-online simulation to the consolidation settlement problem of soft clay. Conventional numerical analyses have used idealized soil constitutive models obtained from the laboratory soil tests. On the other hand, in the hybrid-online simulation, soil response was directly introduced to numerical analyses from the soil element test, and, therefore, the complicated parameter estimation was not required in this method. Fundamentals of the hybrid-online simulation method and the development of the algorithm and corresponding hardware and software for the system were presented in this study. Furthermore, an incremental loading consolidation and the hydraulic conductivity test and a comparative study using the Terzagh's conventional consolidation theory were carried out for the system verification including the performance of the experimental device and source coding of software components, and the data reliability obtained from the system. In conclusion, we found that the hybrid-online consolidation simulation system could reproduce the consolidation behavior of the remolded Kaolinite specimen withoutany discrepancies.

• Proceedings of the Korea Information Processing Society Conference
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• 2003.05a
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• pp.207-210
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• 2003

인터넷 시대를 맞이함으로써, 오프라인 상에서 이루어지던 많은 일들이 온라인 상에서 이루어지고 있다. 상호작용이 원활하게 이루어져야 하는 원격 교육에서 피드백 효과를 가장 잘 발휘할 수 있는 것이 바로 온라인 테스트이다. 온라인 테스트는 시간과 비용을 줄이고, 장소가 필요 없다는 장점이 있는 반면, 본인 여부, 부정행위 등의 여러 문제가 제기된다. 본 논문에서는 온라인 상에서 시험을 치를 때 수험자를 감시하는 온라인 테스트 감시 시스템을 제안하고, 그 시스템의 핵심 부분인 수험자 이탈 시스템에 대하여 집중 연구하였다. 요즘 널리 보급된 PC 카메라의 JMF를 응용하여 연구하였다.

• Journal of Digital Contents Society
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• v.6 no.3
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• pp.149-155
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• 2005

The various kinds of contents have been developed with the explosive increase of the internet users. The advantage of the contents could be extended to the extension of education. For the reason of no limit on space, on-line education such as cyber lecture and cyber university is getting popular. On-line education, however, could be faced to the problem of the management for attendance, homework and the exam. Therefore the proper supervision is requested so that students may get all the information for the calendar of test and other program which are necessary for the lesson. This study is to propose the system of education by mobile which is able to promote the efficiency of the study for the on-line education. The information of the lesson for cyber lecture could be accessed regardless the place and time by using the mobile phone which is usually carried.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.26 no.4C
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• pp.247-254
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• 2006

Online testing method is one of the numerical experiment methods using experimental information for a numerical analysis directly. The method has an advantage in that analysis can be conducted without using an idealized mechanical model, because mechanical properties are updated from element test for a numerical analysis in real time. The online testing method has mainly been used for the geotechnical seismic engineering, whose major target is sand. A testing method that may be applied to a consolidation problem has recently been developed and laboratory and field verifications have been tried. Although related research thus far has mainly used a method to update average reaction for a numerical analysis by positioning an element tests at the center of a consolidation layer, a weakness that accuracy of the analysis can be impaired as the thickness of the consolidation layer becomes more thicker has been pointed out regarding the method. To clarify the effectiveness and possible analysis scope of the online testing method in relation to the consolidation problem, we need to review the results by applying experiment conditions that may completely exclude such a factor. This research reviewed the results of the online consolidation test in terms of reproduction of the consolidation settlement and the dissipation of excess pore water pressure of a clay specimen by comparing the results of an online consolidation test and a separated-type consolidation test carried out under the same conditions. As a result, the online consolidation test reproduced the change of compressibility according effective stress of clay without a huge contradiction. In terms of the dissipation rate of excess pore water pressure, however, the online consolidation test was a little faster. In conclusion, experiment procedure needs to improve in a direction that hydraulic conductivity can be updated in real time so as to more precisely predict the dissipation of excess pore water pressure. Further research or improvement should be carried out with regard to the consolidation settlement after the end of the dissipation of excess pore water pressure.

• Proceedings of the Korea Inteligent Information System Society Conference
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• 2002.05a
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• pp.169-180
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• 2002

·HTML 기반 추론, ·WeBIS를 이용한 추론 사이트의 생성 및 관리, ·WeBIS for TEST를 이 용한 온라인 시험 사이트의 생성 및 관리

• Proceedings of the Korea Information Processing Society Conference
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• 2012.04a
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• pp.230-231
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• 2012

지능형 응용 개발 스튜디오의 어플리케이션 디자이너와 블록 에디터를 활용하면, 개발 언어에 대한 지식이 없거나 개발 경험이 없는 사람도 코드 작성 없이 간단히 Drag&Drop으로 기능을 개발 할 수 있다. 본 연구에서는 지능형 스튜디오 환경에서 간단한 온라인 게임을 시험적으로 제작하고 평가한다.

• Journal of the Korea Society of Computer and Information
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• v.17 no.3
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• pp.135-141
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• 2012

Development of the Internet has brought many changes in methods of education and assesment. When enforcing the on-line distance education, the tests to check the outcomes of the learning are taken on the Internet. The current trends of education evaluation are focused on the types of questions and the detachments of exam proctor but verifying the authentication of answer sheet. There are several forms to make answers; selection type, short-answer type, write-out answer type, practical exercise type, etc. All the forms can be done on the Internet except the practical exercise type because the source of the examinee's answer sheet is unreliable. In this paper, we made the verification system to solve the doubt by setting the proved information on the answer sheet. Putting the information down to confirm the authenticity during the exam on the server is distinct character of this system. After the test finished, the system will operate when examinee turn in the answer sheet.

• Journal of Korea Society of Industrial Information Systems
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• v.11 no.4
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• pp.25-31
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• 2006

With the increasing demand of foreign language education in colleges, an effective testing and study system is also needed especially for large scale classes. In this paper, 1 propose a new online system for running large scale foreign language classes which supports not only testing function but also individually customized studying and diagnosis functions. Using the proposed system enables saving of testing space and helps all students get equally good testing and study environment regardless of class size and lecturers.

• Proceedings of the Korea Information Processing Society Conference
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• 2004.11a
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• pp.619-622
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• 2004

설문조사는 사회의 여러 분야에서 발생하는 문제들을 해결하기 위해 관련자들에게 동일한 질문을 제시하고 설문에 대한 응답을 통해 근거 자료를 수집, 분석하여 유용한 정보를 추출하는 일련의 과정이다. 온라인 설문조사 시장의 성장 추세와 장점들을 고려하여 본 논문에서는 설문 의뢰자들의 요구를 충족시키면서 설문 대상자들에게 편리한 설문응답 환경을 제공하여 설문 응답률을 향상시킬 수 있는 효율적인 온라인 설문조사 시스템을 개발하였다. 또한 구현된 온라인 설문조사 시스템에 대한 기능시험을 통해 효율적 활용 가능성도 확인하였다.