• 한국수학교육학회지시리즈A:수학교육
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• 제48권4호
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• pp.443-454
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• 2009

This study reviewed the notion and strategies of mathematical creativity from two point of view, mathematics and creativity. By these reviews, the spectrum was presented as frame of mathematical creativity task. Creativity and mathematics were seen as polar opposites and mathematical creativity task fit clearly at various points in this spectrum. Some focused on the quantity of ideas and originality from creative point of view. On the other hand, some focused on reasoning, insight, and generalization from mathematical point of view. The tasks on the spectrum were served as the vehicle of mathematical creativity and mathematics classroom. Therefore, there were some specific suggestions that mathematics classroom could be made a place where students and teachers would be able to foster their mathematical creativity.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
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• pp.187-189
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• 2006

Compensators need to keep the voltage properly at the KEPCO system in a ruddle-long term point of view. Therefore, it is necessary to forecast the amount of compensators. In this paper, we analyze how much compensators are needed and what kind of effects is given on the KEPCO system in a middle-long term point of view. In addition, this analysis is based on the books named "The plan of Transmission and Substation at the KEPCO in 2005" and we used PSS/E program when we analyze the KEPCO system.

• 한국산학기술학회논문지
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• 제16권11호
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• pp.7534-7540
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• 2015

본 논문은 경관시뮬레이션 평가를 위한 새로운 조망점을 선정하는 것에 초점을 두어 기존에 연구된 연구문헌 및 도서, 보고서 등을 중심으로 실제로 제시되거나 연구된 항목들을 중심으로 조망점을 설정하였다. 다수의 제시된 항목들을 다시 정리 및 분류하여 이를 SPSS 통계를 통해 조망점 선정의 평가 항목을 유출하고자 하였다. 평가 항목은 요인분석을 통하여 요인의 기술적 특성 및 집단별 비교로 조망점 세부 문항의 기술적 특성을 유출하여 선정한 연구 결과로 첫째, 경관시뮬레이션에 대한 구체적이고 체계적인 계획을 수립하기 위해 전문가 설문을 통해 16개 조망점을 설정하였다. 둘째, 설정된 16개 조망점을 조망점의 속성에 따라 비슷한 성질이나 특성을 고려하여 유형별로 분류하면 공공성, 조망성, 장소성의 3개 유형으로 분류되었다. 셋째, 공공성에 해당하는 조망점은 3개항목, 조망성에 해당하는 조망점은 6개 항목, 장소성에 해당하는 조망점은 7개 항목으로 설정되어, 장소성에 해당하는 조망점이 가장 많이 설정되었다. 이러한 결과는 향후 체계적이고 신뢰성 있는 분석의 틀을 마련하고, 경관시뮬레이션 평가 검토 시 참고 자료로 활용할 수 있을 것으로 기대된다.

• 한국주거학회논문집
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• 제11권4호
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• pp.77-84
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• 2000

The purpose of this paper is to find a visible project area for an average six year old Korean child in radiant enclosures having standing pose. The results using this method will be necessary to find effective radiation area, effective radiation area factor, form factor, and mean radiant temperature for an average six years old Korean child consists of 3012 triangles. The methods to find visible project area of an average six years old Korean at arbitrary view point will be presented. The visible project area for Korean child is needed for evaluating thermal comfort for six years old Korean child. The biggest visible project area of an average six years old Korean is $\textrm{cm}^2$$2.061.0\textrm{cm}^2$ at the view point of alfa 0.0 degree and beta 0.0 degree, and the smallest visible real area of an average six years old Korean is $567.1\textrm{cm}^2$ at the view point of alfa 15.0 degree and beta 90.0 degree.

• 한국농촌건축학회논문집
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• 제13권1호
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• pp.9-20
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• 2011

This study is designed to examine characteristics and types of basic landscape design established by 7 local governments in Jeollanam-do and its availability as the index of landscape administration and present a guideline with view landscape plan of local governments. The results of this study are described below. In case of view landscape, while Korean cities have not many historical assets like landmark, they have locational characteristics with mountain or coast in the center or surroundings of downtown. Therefore, since view landscape has many cases of restricting individual property rights as well as having a value as public property of city which makes recognition of sharing city, it is very sensitive problem and establishing guideline of it is needed. But, it was found that view landscape plan of local governments established location of view spot with the nature of relief viewing downtown or coast from high spot. Selection of viewing objects in view plan require deciding an object as the public property of city and big cities require selection from the zone and small cities must select 1~2 spots from the viewpoint of whole downtown. 3~4 view spots of middle and distant views which makes city community centering around the subject of view must be selected through enough discussion and in case of natural landscape, View shaft or visible rays require setting of range that 30% of viewing objects is seen. View spot or viewing objects should be selected over twice as extra spots through public hearing and civil participation as the process.

• 한국지구과학회:학술대회논문집
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• 한국지구과학회 2010년도 춘계학술발표회 논문집
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• pp.73-73
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• 2010

The purpose of this study is to analyze illustrations, contents, and experiment in 6 kinds of science textbook from the 9th grade covering the phase change of the Moon (on the phase change of the Moon in six 9th grade science textbook) and to suggest coherent and effective contents and frame of the science textbook. Hence, the researcher decided the study problem. The study problems are as follows; 'Are the illustrations in the science textbook presented to help understand the phase change of the Moon depending on the position of the observer?', 'Does the contents of the book clearly mention the phase change of the Moon?', 'Can students understand the phase change of the Moon through the experiments in the science textbook?', 'Do illustrations, contents, and experiment of the science textbook consistently explain phase change of the Moon?'. 10 persons (9graduate students including the researcher) took part in this study. All things unanimously agreed upon by all participants were reflected in the results. The results are as follows. First, the universe observer's view point is mixed with the earth observer's view in illustration of these science textbook regarding the phase change of the Moon. Moreover, illustrations of some textbooks are presented with such words as 'sunrise', 'midnight' and consequently contain too much contents. Second, the contents of the science textbook concerning the phase change of the Moon is not described clearly. In addition, they don't give clear and detailed explanations for the reason of the phase change of the Moon. Third, all of the textbooks, except one textbook, describe the experiment regarding the phase change of the Moon with the earth observer's view point but don't specifically mention that the view point is that of the earth observer's view point. Fourth, illustrations, contents, and experiments in the science textbook don't coherently explain the phase change of the Moon. In addition, it is confirmed through the process of the result analysis that the described contents in the science curriculum is not well constructed or logical.

• East Asian mathematical journal
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• 제37권4호
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• pp.355-379
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• 2021

In this article, we investigated plane figures introduced in elementary school mathematics in the perspective of traditional classification, and also analyzed plane figures focused on the invariance of plane figures out of traditional classification. In the view of traditional classification, how to treat trapezoids was a key argument. In the current mathematics curriculum of the elementary school mathematics, the concept of sliding, flipping, and turning are introduced as part of development activities of spatial sense, but it is rare to apply them directly to figures. For example, how are squares and rectangles different in terms of symmetry? One of the main purposes of geometry learning is the classification of figures. Thus, the activity of classifying plane figures from a symmetrical point of view has sufficiently educational significance from Klein's point of view.

• 한국멀티미디어학회논문지
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• 제21권10호
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• pp.1131-1141
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• 2018

Motion Estimation which is used to reduce the redundant data plays an important role in video compressions. However, it requires huge computational complexity of the encoder part. And therefore many fast motion estimation methods has been developed to reduce complexity. Multi-view video is obtained by using many cameras at different positions and its complexity increases in proportion to the number of cameras. In this paper, we proposed a fast motion estimation method for multi-view video. The proposed method predicts a search start point by using correlated candidate vectors of the current block. According to the motion size of the start search point, a search start pattern of the current block is decided adaptively. The proposed method proves to be about 2 ~ 5 times faster than existing methods while maintaining similar image quality and bitrates.

• 한국콘텐츠학회논문지
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• 제14권11호
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• pp.584-591
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• 2014

이 연구는 영화편집론에서 감정과 커뮤니케이션에 관한 논의를 고찰하였다. 커뮤니케이션 형식으로서의 편집을 통해, 관객은 이야기의 새로운 사실이나 그 사실의 세부로서 새로운 쇼트에 반응하며, 새로운 쇼트는 관객의 귀납적 능력을 이용한다. 쿨레쇼프는 유명한 모주킨 실험을 통해 편집이 개별 쇼트의 내용을 넘어서는 감정과 연상을 이끈다는 것을 보여주고자 했다. 180도 법칙, 시선과 동작의 일치, 30도 법칙, 사운드의 지속성, 빛과 색의 연속성 등의 기술을 활용하는 연속편집은 감정을 강화시킨다. 영화의 감정 효과를 극대화하는 대표적인 장치가 시점편집이다. 영화 내레이션의 목적에 봉사하는 시점편집은 감정 커뮤니케이션을 실행하고 설득하는 강력한 수단이다.

• 한국방송∙미디어공학회:학술대회논문집
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• 한국방송∙미디어공학회 2022년도 하계학술대회
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• pp.1207-1210
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• 2022

2D 이미지로부터 카메라의 위치 정보를 추정할 수 있는 Structure-from-Motion (SfM) 기술과 dense depth map 을 추정하는 Multi-view Stereo (MVS) 기술을 이용하여 2D 이미지에서 point cloud 와 같은 3D data 를 얻을 수 있다. 3D data 는 VR, AR, 메타버스와 같은 컨텐츠에 사용되기 위한 핵심 요소이다. Point cloud 는 보통 VR, AR, 메타버스와 같은 많은 분야에 이용되기 위해 mesh 형태로 변환된 후 texture 를 입히는 Texturing 과정이 필요하다. 기존의 Texturing 방법에서는 mesh의 face에 사용될 image의 outlier를 제거하기 위해 color 정보만을 이용했다. Color 정보를 이용하는 방법은 mesh 의 face 에 대응되는 image 의 수가 충분히 많고 움직이는 물체에 대한 outlier 에는 효과적이지만 image 의 수가 부족한 경우와 부정확한 카메라 파라미터에 대한 outlier 에는 부족한 성능을 보인다. 본 논문에서는 Texturing 과정의 view selection 에서 depth 정보를 추가로 이용하여 기존 방법의 단점을 보완할 수 있는 방법을 제안한다.