• Korean Management Science Review
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• v.17 no.2
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• pp.175-187
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• 2000

The stochastic vehicle routing problem (VRP) is a problem of growing importance since it includes a reality that the deterministic VRP does not have. The stochastic VRP arises whenever some elements of the problem are random. Common examples are stochastic service quantities and stochastic travel times. The solution methodologies for the stochastic VRP are very intricate and regarded as computationally intractable. Even heuristics are hard to develope and implement. On possible way of solving it is to apply a solution for the deterministic VRP. This paper presents a performance evaluation of four simple heuristic for the deterministic VRP is a stochastic environment. The heuristics are modified to consider the time window constraints. The computational results show that some of them perform very well in different cases of the stochastic VRP.

• Korean Institute of Interior Design Journal
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• no.14
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• pp.137-149
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• 1998

Human history show the whole society changed rapidly and found that the momentum and foundation of such change is " the advanced technology ",which is, the advanced knowledge. The world is newly established based upon openess, spaclalization and globalization, and the each nation and company should have to adopt all the existing frames to follow the new world reality. Today is the changing period from industrial society to information society, and information technology plays a great role. As the information society moves ahead, world economy and social infrastructure will be based upon network society and various information systems will make an integrated information system. This paper presents that to establish interior design related information in the age of information with radical change of previous way of thinking, cooperative information exchange system. Also substantial and effective communication systems should be made and continuing cooperation system of interior design information area should be formulated.d be formulated.

• Journal of the Korean School Mathematics Society
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• v.3 no.1
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• pp.59-67
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• 2000

This study has been done to help teach mathematics on the spot of education by providing the history of mathematics and illustrations concerning mathematics, which were rearranged for the level of the second grade students in highschool and intented to interest students in mathematics classes. The contents of teaching, according to each unit (Matrix, Sequence, Limit, Differentiation, Integration, Probability, Statistics) include the life of the representative mathematician, the historical background centered on episodes, questions linked with reality, questions making sensations in history and something for maxim in mathematics. If such contents are properly used, they are expected to be able to stimulate students' curiosity, and to be effective in improving students' learning ability in mathematics by causing them to show their active attitudes toward learning mathematics.

• Transactions of the Korean Society of Automotive Engineers
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• v.7 no.6
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• pp.165-173
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• 1999

HILS system consists of hardwares which are engine and dynamometer and softwares which is vehicle model without the engine. It is well-known that because of engines's nonlinearity it is difficult to describe an engine exactly and not to lose it reality coincidently. But HILS system is the high technology that can compensate this weakness by using a real engine instead of model. The various experiments regarding the ACC which are not normally available for real vehicle tests have been performed by the HILS system. From the results , the HILS system is expected to decrease the experimental accident rate and save costs and time. Compared with simulation, HILS experimental results show similarities and expected to increase road capacity.

• Proceedings of the Korea Contents Association Conference
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• 2015.05a
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• pp.375-376
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• 2015

최근 들어 스타와 그의 자녀가 함께 출연하는 대형 야외 리얼리티 프로그램인 <아빠 어디가>가 중국에서 높은 시청률을 내고 있다. 2013년 첫 방송이후 많은 팬들의 사랑을 받으며, 대중들이 가장 좋아하는 프로그램으로 자리매김하고 있다. 본 연구는 중국판 <아빠 어디가>의 사례를 중심으로 프로그램의 내용 및 현황을 소개하고 이를 사회현실, 경제발전, 문화 창의성 및 프로그램 자체의 구성적 특징을 토대로 그 성공요인에 대해 조사하였다. <아빠 어디가>의 성공요인 분석은 중국 리얼리티 프로그램의 현지화와 창의성에 참고할 수 있도록 기초 데이터로 활용될 수 있으며, 향후 이러한 프로그램의 발전방향에 관한 시사점을 제시하고자 한다.

• ETRI Journal
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• v.35 no.6
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• pp.1001-1010
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• 2013

A sensible media simulation system for automobiles is introduced to open up new possibilities for an in-car entertainment system. In this paper, the system architecture is presented, which includes a virtuality-to-reality adaptation scheme. Standard data schemes for context and control information from the International Standard MPEG-V (ISO/IEC 23005) are introduced to explain the details of data formats, which are interchangeable in the system. A sensible media simulator and the implementation of a sensory device are presented to prove the effectiveness of the proposed system. Finally, a correlation between learning styles and sensory effects (that is, wind and vibration effects) is statistically analyzed using the proposed system. The experiment results show that the level of satisfaction with the sensory effects is unaffected overall by the learning styles of the test subjects. Stimulations by vibration effects, however, generate more satisfaction in people with a high tactile perception level or a low visual perception level.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.05a
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• pp.69-72
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• 2011

In this paper, we propose a method to track the movement of camera from the video sequences. This method is useful for video analysis and can be applied as pre-processing step in some application such as video stabilizer and marker-less augmented reality. First, we extract the features in each frame using corner point detection. The features in current frame are then compared with the features in the adjacent frames to calculate the optical flow which represents the relative movement of the camera. The optical flow is then analyzed to obtain camera movement parameter. The final step is camera movement estimation and correction to increase the accuracy. The method performance is verified by generating a 3D map of camera movement and embedding 3D object to the video. The demonstrated examples in this paper show that this method has a high accuracy and rarely produce any jitter.

• 제어로봇시스템학회:학술대회논문집
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• 2001.10a
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• pp.168.3-168
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• 2001

The purpose of this paper is to find the relations between the virtual reality created by the ship´s bridge simulator (simulator) at Radar Navigation Experiment and Research Facility in Kobe University of Mercantile Marine (KUMM) and the observer´s response to it. In short, we analyze the observer´s heart rate variability (R-R interval) in navigational condition seasick impression by simulator occurred, and present the R-R Interval and the stress of observer with SNS and PNS calculated by STFT. In this experiment, rolling of the ship was simulated and presented to the observer. Rolling was simulated only visually not physically or mechanically while the balancing movement and heart beat of the observer were measured and processed to produce the measures for body response to the artificially created visual environment. The results show that even a ...

• Korean Journal of Computational Design and Engineering
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• v.4 no.1
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• pp.12-18
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• 1999

A deformable non-Uniform Rational B-Spline (NURBS) based volume is programed for the force reflecting exoskeleton haptic device. In this work, a direct free form deformation (DFFD) technique is applied for the realistic manipulation. In order to implement the real-time deformation, a nodal mapping technique is used to connect points on the virtual object with the NURBS volume. This geometric modeling technique is ideally incorporated with the force reflecting haptic device as a virtual interface. The results in this work introduce details for the complete set-up for the realistic virtual clay modeling task with force feedback. The force reflecting exoskeleton haptic manipulator, coupled with a supporting PUMA 560 manipulator and the virtual clay model are integrated with the graphics display, and results show that the force feedback from the realistic physically based virtual environment can greately enhance the sense of immersion.

• Journal of Engineering Education Research
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• v.18 no.6
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• pp.57-63
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• 2015

The purpose of this paper is to find a method to combine engineering education and the humanities by means of the movie genre. Although the science technology has developed and our living standard has improved, humanities has a tendency to be underestimated. Humanities has been treated as something antiquated, uninteresting or worn-out because it has no economic value or usefulness in itself. Engineering students need flexible, analytic and critical thought as well as the qualities in constructing key questions and trying to solve themselves. Communicative and understanding abilities are also required to them. Movies as a constructive visual device show problems with the reality. Especially, the science-related movie genre offers them an opportunity to think over why humanities matters as well as what matters in human being. The movies make engineering students think, discuss and argue on the humanity.