• Proceedings of the Korea Information Processing Society Conference
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• 2005.05a
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• pp.1009-1012
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• 2005

e-러닝의 활용도와 역할이 커져 가면서, 온톨로지(Ontology)나 컨셉맵(Concept Map)을 이용하여 e-러닝의 학습효과를 높이는 방안들이 연구되고 있다. 그러나 아직까지 e-러닝에 온톨로지나 컨셉맵 개념을 적용한 연구 사례는 미미한 수준이며, 이들간의 연계에 대한 고려 없이 별개의 대상으로 다루어져 왔다. 본 연구는 온톨로지와 컨셉맵의 상호 연관 관계와 각각의 장점들을 분석하여 학습에 있어서 시너지(Synergy)를 가져올 수 있는 새로운 e-러닝 시스템 구축 방안을 제안한다. 제안 시스템에서 온톨로지와 컨셉맵 간의 연계는 컨셉맵 에이전트에 의해 이루어진다. 컨셉맵 에이전트는 학습자의 수준이나 관심영역(주제와 범위)에 맞게 온톨로지로부터 추출한 학습 콘텐츠를 재구성해 준다. 학습자는 제안 시스템의 사용자 인터페이스를 통해 자신이 이해하고 있는 지식을 컨셉맵 형태로 표현할 수 있고, 컨셉맵 에이전트에게 요청하여 제공 받은 모범답안 컨셉맵과 자신이 표현한 컨셉맵을 비교하여 학습자가 스스로 자기 평가를 할 수 있다. 본 e-러닝 시스템이 제공하는 이러한 새로운 형태의 학습 환경은 학습자가 학습 지식에 대해 보다 체계적으로 접근하여 효과적으로 학습할 수 있게 해준다. 또한, 학습에 있어서 컨셉맵을 이용하므로 학습 형태의 특성상 보다 원천적으로 암기 위주의 학습에서 탈피하여 구성주의적인 학습을 가능하게 한다.

• The Journal of the Korea Contents Association
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• v.9 no.12
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• pp.19-30
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• 2009

The service that has recently come into the spotlight utilizes the map to first approach the map and then provide various mash-up formed results through the interface. This service can provide precise information to the users but the map is barely reusable. The sketch-map system of this paper, unlike the existing large map system, uses the method of presenting the specific spot and route in XML document and then clustering among sketch-maps. The map service system is designed to show the optimum route to the destination in a simple outline map. It is done by renovating the spot presented by the map into optimum contents. This service system, through the process of analyzing, splitting and clustering of the sketch-map's XML document input, creates a valid form of a sketch-map. It uses the LCS(Longest Common Subsequence) algorithm for splitting and merging sketch-map in the process of query. In addition, the simulation of this system's expected effects is provided. It shows how the maps that share information and knowledge assemble to form a large map and thus presents the system's ability and role as a new research portal.

• Proceedings of the Korean Society of Computer Information Conference
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• 2011.06a
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• pp.245-248
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• 2011

본 연구의 목적은 초등 컴퓨터교육에서 디지털마인드맵을 활용한 컴퓨터 수업이 학습자의 학습흥미도와 초인지 향상에 미치는 효과를 알아보기 위한 것이다. 이를 위해 수원시에 소재한 S초등학교 6학년 1개 학급 26명을 실험집단으로 선정하였다. 실험은 매주 1차시 정보재량시간을 이용하여 4차시에 걸쳐서 진행하였으며, 실험 사전 사후에 학습자들의 학습흥미도와 초인지 검사도구를 통하여 조사하였다. 디지털마인드맵을 활용한 수업이 실제로 학습자의 학습흥미도와 초인지 향상에 효과를 미쳤는지를 확인하기 위하여 면담을 통한 질적평가도 실시하였다. 검사도구를 통해 수집된 자료를 가지고 사전-사후 학습흥미도와 초인지의 평균차이가 통계적으로 유의미한지 확인하기 위해 두 종속표본 t검정을 실시하였다. 연구결과, 디지털마인드맵을 활용한 컴퓨터수업은 초등학생의 학습흥미도 향상에 긍정적인 영향을 미치는 것으로 확인되었지만 초인지 향상 면에서 통계적으로 유의미한 차이는 나타나지 않았다. 그러나 면담결과로 미루어 보아 일정부분 초인지 향상에 긍정적인 효과가 있음을 유추해 볼 수 있었다.

• Proceedings of the KIEE Conference
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• 2015.07a
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• pp.1387-1388
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• 2015

본 논문은 주어진 두 주행로 의미정보간 부분그래프 매칭(subgraph matching)을 이용한 맵매칭 방법을 제안한다. 지도 주행로의 의미정보를 선택하여 그래프로 재구성하는 방법을 제시하고 재구성된 지도 그래프에서 부분그래프 매칭을 통한 두 지도간 맵매칭 방법을 제안한다. 실제 지도를 이용한 모의실험을 통해 제안한 방법을 검증한다.

• The Journal of the Korea Contents Association
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• v.13 no.11
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• pp.461-476
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• 2013

Knowledge maps for science and technology are used extensively in the research projects. However, they are not organized systematically and are not necessarily suitable to be used in the research projects. Therefore, this study aims to organize the knowledge maps in order to support scientific research projects. To this end, the existing knowledge maps for science and technology are classified as one of four types based on data representation methods; the frequency summary map, trend summary map, distribution-based knowledge map and network-based knowledge map. Additionally, by summarizing and classifying the knowledge maps through the principle of 'five w's and one h', the unexplored area are investigated. Finally, some examples of useful knowledge maps in terms of data analysis are provided with details such as definitions, components and utilization purposes. These findings may be a starting point for future research into a better understanding of knowledge maps for science and technology.

• Journal of Korea Multimedia Society
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• v.9 no.1
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• pp.109-118
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• 2006

In this paper, we suggest the environment based disparity method that calculate the depth value of the objects from environment maps. This method using the disparity of the environment map can calculate the depth value from two environment map that acquire at different viewpoint. This method can decide the visibility of the object whether it is occluded others or not. Also, we can analogize the depth value of the object that does not relate the reference plane(in case of being in the air) and make three dimensional environment model using the proposed method

• Journal of Korea Game Society
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• v.7 no.1
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• pp.3-10
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• 2007

The maps in the world of the role playing games provide not only areas for motions and actions of player characters, but also worlds of totally included monsters and NPC(Non Player Character). However, the design of maps and monsters in them could not be tested for their balances until the games had been developed quite a bit. So they need additional expense of extension period of developments. In this paper, we have designed and developed a map simulator to expect the popularities of the maps in the early stage of the game planning in order to prevent inefficient concentration of users on some maps by expecting the popularities of the maps in the early stage of game planning and by setting the parameters of monster arrangements in the map.

• School Mathematics
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• v.6 no.4
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• pp.325-344
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• 2004

This study was carried out to investigate effects of the mindmap note-taking for the formation of the mathematical concepts structure and the matjematical creativity. Two classes were randomly chosen for this study from the third grade students of a middle school located in a medium size city. Thirty one lecture hours of the mindmap note-taking on the quadratic equation and functions were administered to the experimental class of 41 students, while same lecture hours of the ordinary instruction on the same contents were administered to the control class of 40 students. It was shown from this experiment that there ware significant evidences of improvement both in the formation of students' mathematical concepts structure and mathematical creativity through the mindmap note-taking lecture. Hence, the mindmap note-taking lecture is suggested for the improvement in the formation of student's mathematical concepts structure and mathematical creativity.

• Journal of Broadcast Engineering
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• v.23 no.1
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• pp.3-10
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• 2018

Depth map has been utilized in a varity of fields. Recently research on generating depth map by artificial neural network (ANN) has gained much interest. This paper validates the feasibility of implementing the ready-made depth map generation by convolutional neural network (CNN). First, for a given image, a depth map is generated by the weighted average of a saliency map as well as a motion history image. Then CNN network is trained by test images and depth maps. The objective and subjective experiments are performed on the CNN and showed that the CNN can replace the ready-made depth generation method.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.10 no.12
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• pp.3688-3693
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• 2009

In this paper the design methode of a separated composition state machine based on the compositive map with connecting two chaotic maps together - sawtooth map $S_2(x)$ and tent map $T_2(x)$ and the result of that is proposed. this paper gives a graph of the chaotic states generated by the composition state machine using the compositive logic of two different chaotic maps - sawtooth map and tent map and also shows that the period of pseudo-random states has the length according to the precision of the discreet truth table.