• Communications of Mathematical Education
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• v.11
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• pp.389-401
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• 2001

삼각형은 초 ${\cdot}$ 중등학교 수학교육에서 가장 기본적인 평면도형들 중의 하나지만, 삼각형을 활용한 다양한 유형과 수준의 교수-학습 자료들은 많이 개발되어 있지 않다. 특히, 정형적인 교수-학습 활동을 포함하여 학습자들의 창의적 성향을 개발 ${\cdot}$ 육성하는데 도움을 줄 수 있는 자료들은 그리 흔치않은 실정이다. 본 연구에서는 삼각형을 창의성 신장을 도구로 활용하여, 다양한 구체적 조작 활동에서부터 다양한 형식적인 논증의 경험을 제공할 수 있는 창의적 학습 자료를 개발할 것이다.

• Korean Journal of Construction Engineering and Management
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• v.13 no.2
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• pp.91-101
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• 2012

In planning phase of Public Multi-Housing Projects, it is required to develop the methodology and criteria for fair cost prediction with influencing power from planning phase to occupancy phase. Many studies still have focused on the prediction of cost by multiple regression. However, there is no logical explanation about the influence of nonmetric variables for the prediction of cost in planning phase. Accordingly, this research pursues a cost prediction model including nonmetric variables for use in planning phase. There are 3 steps of this research : 1) Finding the factors influencing construction cost and assigning variables for a multiple regression. 2) Conducting a dummy regression analysis with nonmetric variables and model validation by comparing actual cost data. 3) Developing the ratio of RC structure cost to wall structure cost by using cost predection model. The results could establish cost prediction process including the influence of nonmetric variables and the ratio of RC structure cost to wall structure cost.

• Journal of the Korean School Mathematics Society
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• v.15 no.4
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• pp.719-745
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• 2012

This research is a study on student's understanding fundamental conception of mathematical curriculum, especially in geometry domain. The goal of researching is to analyze student's wrong conception about that domain and get the mathematical teaching method. We developed various questions of descriptive assessment. Then we set up the term, procedure of research for the understanding student's knowledge of geometry. And we figured out the student's understanding extent through analysing questions of descriptive assessment in geometry. In this research, we concluded that most of students are having difficulty with defining the fundamental conception of mathematics, especially in geometry. Almost all the students defined the fundamental conceptions of mathematics obscurely and sometimes even missed indispensable properties. Prior to this study, we couldn't identify this problem. Here are some suggestions. First, take time to reflect on your previous mathematics method. And then compile some well-selected questions of descriptive assessment that tell us more about student's understanding in geometry.

• Journal of architectural history
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• v.17 no.5
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• pp.39-53
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• 2008

This study aims to investigate and analyze the plan and structural system of 4 kan(間) by 4 kan(間) square church built in early 20th century. At that time, three kinds of traditional wooden structure church had been built under the circumstances of transitional era : Basilica style such as Ganghwa Anglican Church, 'ㄱ' shaped style such as Keumsan Church and $4{\times}4$ Square style such as Bukok Church and Jacheon Church that are concerned in this study. Traditional plans and structural system were mixed with new religious function and transformed into korean peculiar style. $4{\times}4$ Square style is a residual product in that process. Despite of it, little concerns on it till now. The results of this study are described as follows. 1. The plan of these $4{\times}4$ square churches is divided into three areas : cathedra($1{\times}1$), attendance($4{\times}2$), and intermediation($4{\times}2$). The location of cathedra is commonly the opposition part of main gate and projected out of the building. Attendance area was also divided into two, man and woman, because of keeping a distance with each other. 2. The structural system of these $4{\times}4$ square churches are somewhat different because of their size and roof style. In the case of Bukok church, $4{\times}4$ square fall off $3{\times}3$ and $2{\times}2$ gradually and turn into paljak(八作) roof, which enable us to get in traditional entering methods. On the contrary, Jacheon church use hipped roof but almost alike pyramidal roof, which could make us not to recognize entering in the aspect of gable part.

• The Journal of the Korea Contents Association
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• v.12 no.9
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• pp.93-105
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• 2012

Dardenne brothers' films deals with minorities' issues who are shoved out to periphery of society, and especially takes interest in value-deprived human life in labor market of today. This study examines such social awareness of Dardenne brothers targeting their latest works awarded in Cannes Film Festival, , , , , . And analysis is attempted about Dardenne brothers' unique formal aesthetical style that exactly captures such social awareness. In Dardenne brothers' films a person shows up who faces abject matter of living. Their agony is closely connected to unemployment, and shows images of irresistible anxiety and alienation. Dardenne brothers' images are not only simple platform with contents embodied, but designed form showing essential thematic consciousness. Location and gaze, motion of camera capturing a character makes us to reflect the situation a character is facing in the world. There are almost no regard about plots, no dramatic devices, superficial and even straightforward, but Dardenne brothers' films have such independent formal aesthetic, which makes able to give endless tension.

• Journal of Gifted/Talented Education
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• v.15 no.1
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• pp.85-102
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• 2005

Some properties on the mathematical hyper-dimensional figures by 'the principle of the permanence of equivalent forms' was investigated. It was supposed that there are 2 conjectures on the making n-dimensional figures : simplex (a pyramid type) and a hypercube(prism type). The figures which were made by the 2 conjectures all satisfied the sufficient condition to show the general Euler's Theorem(the Euler's Characteristics). Especially, the patterns on the numbers of the components of the simplex and hypercube are fitted to Binomial Theorem and Pascal's Triangle. It was also found that the prism type is a good shape to expand the Hasse's Diagram. 5 mathematically gifted high school students were mentored on the investigation of the hyper-dimensional figure by 'the principle of the permanence of equivalent forms'. Research products and ideas students have produced are shown and the 'guided re-invention method' used for mentoring are explained.

• The Journal of Korean Institute of Electromagnetic Engineering and Science
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• v.15 no.8
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• pp.765-774
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• 2004

In this paper, a novel approximate solution for scattering by a very thin planar homogeneous dielectric scatterer with an arbitrary shape is formulated. This solution is based on a volumetric integral equation and is expressed in terms of Fourier transform. It is shown that the obtained solution is reduced to an exact solution for an infinite dielectric slab. For 2D, or 3D scatterers, the formulation is verified numerically. Especially fur edge-on TM polarized wave incidence a closed-form solution of backscattering from a thin dielectric half-plane is formulated, which is very accurate for wide range of normalized surface impedance except very low impedances(│η│〈0.5).

• Journal of architectural history
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• v.16 no.4
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• pp.37-56
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• 2007

The '凸'-shaped, the '呂'-shaped and the hexagonal-shaped pit houses were excavated at the Youngdong area, some location along the upper the Imjin River and Han River between the Iron age and the kingdom of Hanseong Baekje. The aim of this study is to analyze various structural system and developement of the pit house with rectangular plan. It is considered a matter in all its aspects which are plan, scale, aspect, pillar holes, carbonized wood and several traces. These pit houses removes the pillar on the inside or it reduces to secure a wider space, it pursued the chamfered corner, the change of the front, the entrance fixed. Also these adopted diverse structural systems(the chuandou structure, the structural system of columns and beams and a bearing wall). But in the course of time, the Korean wooden architecture is developed gradually the structural system of columns and beams. It is presumed the result that overcome the limit with the close space and pursue the flowing space and compose a group of organizable buildings.

• Journal of architectural history
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• v.2 no.2 s.4
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• pp.66-76
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• 1993

The plan of Korean traditional houses are devided by the span-units which is the automatic result of the timber construction. This study aims to analyze the ways plan type change when the number of span changes. One village named Bangchon in Honan Province was selected where we investigated more than 30 houses ranging from 3 span to 6 span. It is identified that there were certain rules which govern the plan change when number of span change. When one span is added onto 3 span houses, wooden floor of one span is added in between the two ondol-rooms. When one span is added onto 4 span houses, kitchen is enlarged. When one span is added onto 5 span houses, wooden floor is enlarged into 2 span, Also the plan of Man's quarter(Sarang-chae) was investigated and compared to Lady's quarter. The research proves that such rules of plan change need to be considered as a basic standard of analysis when traditional houses are to be studied.

• Journal of architectural history
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• v.29 no.2
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• pp.53-62
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• 2020

This study focuses on the architectural changes of stele pavilion at the royal tombs of Joseon Dynasty. Throughout the survey on overall forty two stele pavilions, they were classified into basic type, expanded type, and 4-side corridor type. Basic type was usually used for general small stela, while expanded type was for extraordinarily large ones. 4-side corridor type, however, turned out to be used for both small and large stela and has appeared only during King Gojong period(高宗年間, 1863-1907). When it was first applied at Geonwolleung(健元陵) in 1870s, the purpose of 4-side corridor type seemed to stabilize the enlarged structure due to the size of the larger stele. Later, 4-side corridor type was repeated for small stela at Hongneung(洪陵) and Yureung(裕陵) in 1898 and 1904 respectively, to express higher dignity of Daehan Empire(大韓帝國). This type of plan continued to other pavilions in the center of Seoul such as Kinyeombijeon(紀念碑殿) and Seokgojeon(石鼓殿) that were built in 1903 with sophisticated proportion and multiple brackets. This architectural change implies that stele pavilion itself has become more significant than stele inside.