• 한국조경학회지
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• 제25권3호
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• pp.210-221
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• 1997

This study was conducted to investigte the visual preference and response between introduced and native trees for utilization of the south native trees in interior space. 1. The intensity of illumination was below 500lux at 24 buildings of interior spaces surveyed. Generally the temperature was 24~$26^{\circ}C$, and humidity was 60~70%. 2. Total number of introduced tree species were 9 familiar, 16 genus, 18 species, especially palm genus were the largest tree among them at these surveyed interior spaces, but native trees were only 2 species. The introduced tree of 2 to 3m in height was 46 percent, and the case of 1.2 to 2m was 42 percent. 3. The mean of visual preference was the highest at Rhapis excelsa and howeia belmoreana, and followed with Neolitsea sericea, Daphniphllum macropodum, Listsea japonicum. In the mean of visual preference for selected tree groups, native tree was not different as compared with introduced tree. 4. Visual image factor of the native and introduced trees at interior spaces was classified by individual factor and emotional factor. These 2 factors were shown 66.5% total variance. The native tree was strongly recognized on individual factor, as , and introduced tree was also strongly recognized on emotional factor. 5. In the analysis of visual preference and image, a difference between the selected groups of the introduced and native trees were not shown significant, and the introduced trees were similar to the native trees on the visual image. This result was as follow There was an analogy between Cinnamomum camphora, Ligustrum japonicum and Ficus retusa, Ficus benjamina. There is an analogy between Castanopsis cuspidata var. sieboldii, Cinnamomum japonicum and Ficus retusa, Ficus benjamina. There was an analogy between Elaeocarpus sylvestris var. ellipticus, Fatsia japonica and Rhapis excelsa, Howeia belmoreana. There was an analogy between Neolitsea sericea, Daphniphyllum macropo여, Listsea japonica and Rhapis excelsa, Howeia belmoreana. There was an analogy between Elaeocarpus sylvestris var. ellipticus, Fatsia japonica and Dracaena fragranse, Ficus elastica, Monstera deliciosa.

• 한국과학교육학회지
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• 제37권6호
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• pp.1015-1023
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• 2017

이 연구의 목적은 물결파의 간섭 현상에 대해 학생들에 의해 생성되는 설명 가설의 발달 과정과 그 과정에 영향을 미치는 요인들을 조사하는 것이다. 비유 추론 비계 과정을 활용했을 때 학생들에 의해 설명 가설이 어떻게 생성되고, 수정되고, 정교화되어 가는지를 조사하고 분석하였다. 연구 대상 학생들은 B 광역시의 한 개 중학교에서 표집한 2개 학급 60명이며, 이 학생들을 인지 수준에 따라 12개 조로 소집단 편성하여 활동하도록 하였다. 연구 결과는 다음과 같다. 첫째, 물결파 현상에 대한 설명 가설의 발달 과정에 어떤 패턴이 있음을 발견하였다. 둘째, 가설의 발달 과정에서 학생의 인지수준의 영향이 분명히 나타났지만, 적절한 비계 전략에 의해 인지수준이 낮은 학생도 설명가설을 형성할 수 있음을 보였다. 셋째, 비유 추론을 활용한 비계 전략은 학생들이 가설을 형성하는 데 실제적인 도움을 주었다. 결론적으로 비유 추론은 중등학교 학생들이 가설을 형성하도록 하는 학습과정에 의미 있는 도구가 될 수 있다.

• 건축역사연구
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• 제19권1호
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• pp.27-50
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• 2010

This paper was to analyze the fusion between the organic and inorganic characteristics performed in architecture and urbanism, especially on the characteristics found in the works of Archigram group who was very active during 1960s and 70s. Generally, it was thought that Archigram drew its ideas mainly from a mechanist metaphor and that the diagrams of its members were based on the notion of the material obsolescence, which could be placed in a British tectonic tradition. But, Archigram's works has been continually influenced by the biological-organic analogy from the birth of the group to its dissolution. Simply, the importance that the biological-organic analogy takes in the works of Archigram has changed periodically according to the change of its members. We can divide generally Archigram group in two parts : on one hand, nascent members such as Peter Cook, Dennis Greene, Michael Webb ; on the another hand, three members who participated from LCC such as Warren Chalk, Ron Herron, Dennis Crompton. As the new three LCC members participated, Archigram Group focalized on the technological part more than ever. But, when its members dispersed geographically and professionally, its biological-organic analogy came out again at the surface of their works. However, Archigram's organic and inorganic characteristics did not always adhere in opposing position with each other and took the form of coexistence in harmony at the same period. That is, the works of Archigram were persuing the creation of community that nature, technology and architecture could communicate and harmonize with each other through the intergration between organic and inorganic characteristics. The reason why Archigram became the one of the most excellent architectural avant-garde group in the 60s was mainly to receive asssitance with the fact that two small groups having contradictory tendencies got together and formed the Archigram group.

• 대한수학교육학회지:수학교육학연구
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• 제19권1호
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• pp.45-61
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• 2009

유추적 사고는 수학적 발견의 주요 도구로 강조되어 왔다. 그러나 영재아들을 대상으로 한 교육 자료에서 유추적 사고를 활용한 예는 현재까지 많지 않은 편이다. 이 연구에서는 영재아들을 대상으로 한 수업에서 유추적 사고를 적극적으로 강조하였을 때, 학생들이 어떤 반응을 보이며, 실제로 유추적 사고가 이들의 수학적 발견을 어떤 방식으로 돕는지 알아보았다. 고전적인 유추 문제는 유사한 두 대상과 각각의 대상에 대해 성립하는 성질을 비례식과 같은 형태로 제시하고, 네 항목 중 주어진 세 항목을 토대로 한 항목을 찾아내는 것이었다. 이 연구에서는 이를 변형하여, 세 가지 형태의 유추 과제를 제시하였으며, 각각의 유형에 대한 학생들의 반응을 분석하였다. 학생들은 비교적 유연하고 유창하게 유추적 사고를 사용하였으며, 유추적 사고 능력에 따라 수학적 발견에 차이를 보였다. 유추적 사고는 이미 알고있던 개념을 재해석하고, 새로운 관점으로 변형하게 하는 역할을 하였으며, 새로운 지식의 발견에 도움을 주는 것으로 나타났다.

• 한국과학교육학회지
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• 제27권9호
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• pp.778-786
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• 2007

이 연구에서는 비유를 사용한 화학 개념 학습에서 대응 오류 분석 활동의 효과를 개념 이해도,대응 관계 이해도,수업에 대한 인식 측면에서 조사하였다. 2개 중학교의 1학년 121명을 비교 집단과 처치 집단으로 배치한 후,'물질의 상태와 분자 배열'에 대하여 수업을 실시하였다. 비교 집단에서는 TWA 모형에 기초한 비유 수업을 하였고,처치 집단에서는 TWA 모형의 '유사성 대응' 및 '차이점 지적'을 '대응 오류 분석 활동'으로 대체한 수업을 하였다. 연구 결과,학생들의 장의존성 장독립성에 관계없이 개념 이해도 검사와 대응 관계 이해도 검사에서 처치 집단의 점수가 비교 집단보다 높았으며,그 차이가 통계적으로 유의미하였다. 수업에 대한 인식 검사 결과에서는 대부분의 학생들이 비유를 사용하는 수업에 대해 긍정적으로 인식하였으나,처치 집단의 학생들은 대응 오류 분석 활동을 어려워하는 것으로 나타났다. 이에 대한 교육적 함의를 논의하였다.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2007년도 춘계학술대회B
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• pp.2929-2934
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• 2007

Prediction methods for cavitation noise are presented. At first, direct numerical simulation of cavitating flow noise has been performed, and acoustic analogy equation based on the cavitation noise modeling is derived. For the direct numerical simulation, a density based homogenous equilibrium model is employed to simulate cavitating two-phase flow and the governing equations are solved with high-order numerical schemes to resolve cavitation noise. The compressible Navier-Stokes equations for mixture fluids are discretized with a sixth-order central compact scheme, and the steep gradient of flow variables and supersonic regions are treated with the selective spatial filtering technique. The direct simulation of cavitating flow noise is performed for a 2D circular cylinder at cavitation number 0.7 and 1. The far-field noise is also predicted with the derived analogy equation. Noise spectrum predicted with the equation is well compared with the result of direct numerical simulation and also agree well with the theory.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2009년 춘계학술대회논문집
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• pp.252-268
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• 2009

In the present study, a grid deformation technique has been incorporated into the unsteady compressible and incompressible viscous flow solvers on unstructured hybrid meshes. An algebraic method based on the basis decomposition of normal edge vector was used for the deformation of viscous elements, and a ball-vertex spring analogy was adopted for inviscid elements among several spring analogy methods due to its robustness. The present method was validated by comparing the results obtained from the grid deformation and the rigid motion of entire grids. Fish swimming motion of an NACA0012 airfoil and flapping wing motion of a generic fighter were simulated to demonstrate the robustness of the present grid deformation technique.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2002년도 춘계학술발표대회 논문집
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• pp.81-84
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• 2002

An approach for predicting the effective thermal conductivities of fiber-reinforce composite has been developed based on a thermal-electrical analogy. The unit cell of the composite laminate is divided into regular volume elements and the material properties have been given to each element. By constructing the series-parallel thermal resistance network, the thermal conductivities of composite both in-plane and out-of-plane direction have been predicted. Graphite/Epoxy composite is used for a balanced plain-weave composite laminate. By comparing the predicted results and the previous works, good agreement has been found.

• 한국초등수학교육학회지
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• 제21권2호
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• pp.365-389
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• 2017

본 연구에서는 초등 영재학생들의 원순열 과제 해결 과정을 분석하여 교수학적 시사점을 도출하는 데 목적을 두었다. 구체적으로, 본 연구에서는 초등 영재학생들에게 원순열 과제를 제공하여 이 학생들의 해결 과정을 표현, 세기 과정, 결과 집합구성 방식을 통하여 분석하였다. 연구 결과 원순열 과제를 해결하는 과정에서 일부 학생들이 유추를 활용하는 장면이 확인되었으며, 학생들은 가능한 결과들의 범주화와 재범주화 과정에서, 그리고 유추의 적절하지 않은 활용으로 인하여 원순열 과제해결에 어려움을 겪는 것으로 확인되었다.

• 한국수학교육학회지시리즈A:수학교육
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• 제41권3호
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• pp.273-289
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• 2002

It tends to be emphasized that mathematics is the important discipline to develop students' mathematical reasoning abilities such as deduction, induction, analogy, and visual reasoning. This study is aimed for investigating the present state about mathematical reasoning in secondary school. We survey teachers' opinions and analyze the results. The results are analyzed by frequency analysis including percentile, t-test, and MANOVA. Results are the following: 1. Teachers recognized mathematics as knowledge constructed by deduction, induction, analogy and visual reasoning, and evaluated their reasoning abilities high. 2. Teachers indicated the importances of reasoning in curriculum, the necessities and the representations, but there are significant difference in practices comparing to the former importances. 3. To evaluate mathematical reasoning, teachers stated that they needed items and rubric for assessment of reasoning. And at present, they are lacked. 4. The hindrances in teaching mathematical reasoning are the lack of method for appliance to mathematics instruction, the unpreparedness of proposals for evaluation method, and the lack of whole teachers' recognition for the importance of mathematical reasoning