• 한국과학교육학회지
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• 제32권6호
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• pp.1050-1062
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• 2012

Concepts of science have been developed by occupying 'ecological niche' within conceptual ecology. The ecological niche is determined from the mutual effect between intellectual environmental of the learner and new concept, which few studies have been conducted. This study examined how the ecological niche of the concept of photosynthesis in $7^{th}$ grade is changed by instruction. The ecological niche was analyzed using 2 methods: (1) the change in the diversity of concepts, and (2) the change in the proximity of concepts based on the frequency and the relativeness score of the concepts. The concept of photosynthesis was analyzed in the 4 domains in the place of photosynthesis, products of photosynthesis, reactants of photosynthesis, and environmental factors. The results of this study are as follows: (1) reduced diversity of concepts, (2) increased frequency and relativeness score of the scientific concepts, and (3) increased proximity of the scientific concepts by instruction. With these results, the mutual effects of the concepts within the conceptual ecology have become active by class to differentiate the relationships between the concepts, which accordingly displayed their changes in status.

• 한국과학교육학회지
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• 제32권10호
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• pp.1524-1536
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• 2012

과학 태도는 학습의 질 향상에 영향을 미치며 과학 교육에서 중요한 관심사 중의 하나이다. 과학 태도 수준에 따라서 인지적 영역의 구조적 측면, 특히 개념간의 근접성 분석이 필요하다. 따라서 이 연구에서는 과학 태도 수준에 따라서 광합성 관련 개념의 근접성이 수업 후에 어떻게 변하는지를 분석하는데 그 목적이 있다. 이를 위하여 7학년 학생 270명을 대상으로 수업 전과 수업 후의 과학 태도와 광합성 개념에 대한 조사를 실시하였다. 광합성 개념은 '광합성이 일어나는 장소', '광합성에 필요한 물질', '광합성결과생성 되는 물질', '광합성에 영향을 미치는 요인'으로 구성하였다. 광합성 개념의 근접성은 다차원 척도법을 활용하여 분석하였다. 이 연구 결과는 다음과 같다. (1) 수업을 통해 학생들은 구체적인 개념을 습득함으로써 개념의 근접성을 변화시키는 것으로 나타났다. (2) 학습을 통해 과학태도 상집단이 중 하집단에 비해 과학적 개념의 근접성이 가까워지는 경향이 있다. (3) 과학 태도의 모든 수준의 학생에서 비과학적 개념이 수업 후에도 계속 존재하는 것으로 나타났다. 이 비과학적 개념이 광합성과 관련된 과학적 개념 사이의 근접성을 방해하는 것으로 판단된다. (4) 학생들은 광합성과 관련된 4개 영역에서 서로 관련된 개념은 가깝게 인식하고 있는 것으로 나타났다. 학생들은 광합성에서 광합성 장소와 필요 물질을, 광합성 결과 생성되는 물질과 필요 물질을 가깝게 인식하고 있다고 할 수 있다.

• 한국과학교육학회지
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• 제33권3호
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• pp.650-663
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• 2013

Multidimensional scaling can be used to identify relationships among concepts, revealing the structure of the cognitive framework by measuring distances within perceptual maps. The current study sought to examine the relationships among concepts related to photosynthesis in 2,844 $3^{rd}-11^{th}$ grade science students. The questionnaire included items on 'location,' 'products,' 'reactants,' and 'environmental factors', presenting images related to each theme. Students provided responses corresponding to particular topics, and reported the extent to which the concept was related to the topic on a scale from 1 to 30. The survey results were as follows: first, students were not able to clearly distinguish between or understand the four main topics. Second, students organized their cognitive structures by closely associating related concepts after learning. Third, the presented concepts revealed a mixture of scientific and non-scientific concepts, suggesting that students needed to clearly distinguish the preconceptions through which they organized concepts, so that they are suitable for cognitive structures based on learning. Furthermore, non-scientific concepts within perceptions were consistently maintained throughout learning, affecting the proximity of scientific concepts.

• 대한수학회지
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• 제53권5호
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• pp.1037-1056
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• 2016

In this paper, we define the concepts of commute proximally, dominate proximally, weakly dominate proximally, proximal generalized ${\varphi}$-contraction and common best proximity point in probabilistic Menger space. We prove some common best proximity point and common fixed point theorems for dominate proximally and weakly dominate proximally mappings in probabilistic Menger space under certain conditions. Finally we show that proximal generalized ${\varphi}$-contractions have best proximity point in probabilistic Menger space. Our results generalize many known results in metric space.

• 한국과학교육학회지
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• 제31권5호
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• pp.680-693
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• 2011

개념 생태에서 개념은 독립적으로 존재하는 것이 아니라 생태적 환경 하에 놓여 생태 지위를 차지한다. 생물학의 많은 개념들 중에서 유전 개념은 유전 단원 외에도 여러 단원과 관련되어 있으며, 유전 단원 내에서도 영역 사이의 개념 간 의존도가 높은 단원이므로 생태 지위적 접근을 통해 개념의 다양성과 개념 근접성을 분석하였다. 이를 위하여 9학년 학생 995명을 대상으로 하였다. 설문지의 설문 영역은 유전자, 염색체, 체세포분열, 감수분열로 4가지 유전 관련 개념을 대상으로 하였다. 설문지는 각 영역과 관련된 생물학적 개념이나 용어를 제시하게 하고, 제시한 생물학적 개념이나 용어를 각 영역과의 관련된 정도를 1에서 30의 점수로 표시하게 하였다. 9학년 학생들을 대상으로 수업을 통한 유전개념의 변화를 생태 지위적 접근 방법으로 분석하였다. 수업을 통해 전체 개념 수는 감수분열, 체세포분열, 염색체, 유전자 영역 순으로 모든 영역에서 증가하였고, 전체 개념 수의 증가로 인해 상대밀도는 감소하였다. 개념 다양성 지수는 감수분열, 체세포분열, 염색체, 유전자 순으로 모두 증가하였다. 그리고 학습 후 개념들의 상대밀도의 차이가 감소하였으며, 관련성 점수의 차이도 감소하여 개념 간 유사성이 증가하였다. 이 결과를 바탕으로 다음의 결론을 얻을 수 있었다. 첫째, 학습을 통해 유전개념의 개념 다양성이 증가하였다. 둘째, 학습을 통해 유전개념의 개념 근접성이 증가하였다.

• 호남수학학술지
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• 제43권1호
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• pp.123-129
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• 2021

Two new concepts, namely, ��∗-connectedness and ��∗-component are introduced by using ideal in proximity spaces. A relation of ��∗-connectedness with different types of connectedness that are considered in literature before is studied. It is shown that ��∗-connectedness is a contractive property.

• 한국초등과학교육학회지:초등과학교육
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• 제23권3호
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• pp.199-207
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• 2004

Elementary science curriculum is designed to be closely-related magnetism with electricity in a physics domain and this paper explored whether elementary school students have recognized of relationships between them and whether there are any trends in the degree of recognition by grades. The elementary students of 3rd to 6th grade (total 154 persons) in a school in a local city participated in the experiment. Two forms of questionnaire were administrated to each grades. In the first questionnaire about magnetism, students were asked to rank the physics terms as the degree of proximity into magnetism and to write briefly the reason. In the second questionnaire about electricity, students were asked to do the same routine. The closer to the central term in the diagram, the lower score were given and the terms were classified as closely related to magnetism, electricity and the rest. Calculated the response frequency and averaged by the ranked terms, it was examined that the scores of proximity in how students closely rated conception to magnetism and electricity. The result said that the upper grades students showed the degree of proximity with magnetism and electricity as closely. Therefore, the sequence of comprehension of magnetism and electricity concept, which was found in the elementary school curriculum, seems to be found in the elementary students＇ recognitions by grades.

• 한국초등과학교육학회지:초등과학교육
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• 제36권2호
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• pp.129-142
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• 2017

In this study, the characteristics of the reading materials in elementary school science textbooks developed under the 2009 revised National Science Curriculum were investigated. The criteria for classifying the reading materials were the types of topic, purpose, students' activity, and presentation. The visual images in the reading materials were also analyzed from the viewpoint of type, role, caption type, and proximity type. The results indicated that the number of the reading materials in the 2009 revised science textbooks decreased compared to that of the 2007 revised science textbooks. It was also found that the frequencies of the reading materials expanding concepts of the text and/or requiring corresponding students' inquiry increased. More visual images were used in the reading materials of the 2009 revised science textbooks. However, several limitations were still found to exist; most visual images were illustration and/or picture; many visual images were presented without a caption; there was a problem in the proximity of visual image to text.

• Architectural research
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• 제3권1호
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• pp.21-27
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• 2001

This study addressing the underlying strategies for Andong municipal museum complex development is in timely view that Andong has obtained a worldwide reputation as a treasury of traditional Korean Confucian culture. Thus far, there has been a tendency that various local museums are proposed to meet architectural aspirations architects and users commonly hold. Overall, though, the major role they play in making overall city image has not been considered in a systematic manner. Based on Lee's (2001) two previous studies, this study summarized the utility of cognitive distance and cognitive map concepts, which are proposed by Kevin Lunch (1976) to evaluate city image, in planning Andong municipal museum complex (AMMC). Sample is stratified into city residents and outsiders, and also into the general public and design-related professionals to see if there is any group difference in constructing their mental image. Three major findings are obtained. First, familiarity, so-called the degree of knowing, is the function of the length of stay in a designated area. That is, the longer people stay in Andong, the more likely they are familiar with its overall environmental aspects. Second, mental proximity of Andong municipal museum complex relative to existing cultural landmarks is closely related to the degree of how people value those landmarks in terms of their significance. Dosan Seowon and Hahoe folk village are most highly valued, which means higher proximity. Third, functional diversity turned out to be the most important design dimension, while display mechanism are least valued. Cognitive simulations of this sort are meaningful in that projected composite image might be a rough first approximation of true public image.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2009년도 추계학술발표대회 논문집
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• pp.17-22
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• 2009

This research was conducted to investigate methods to strengthen the apartment community from the territoriality point of view. In order to achieve this goal, first of all the concept and the structure of territoriality are studied through articles and literature reviews to ensure a full understanding of the community strengthening-related plan elements suggested in the previous research. The study is then divided into the categories of semi-private territory and semi-public territory to pursue analysis based on the issues related to strengthening community such as possession, proximity, defense, boundary-regulation, and personalization in case by case studies. The results of case studies are as follows: in the case of possession with psychological concept of possession, the extension of private space and exclusive space are suggested. And for the concept of proximity, that is, the physical and psychological distance for sense of the same nature, increased opportunity of meeting the residents in the same building or same area are suggested And for the psychological proximity, familiar design and facilities for meeting and exchange-related methods are shown. For the case of indirect defense in defense concept, the methods related to monitoring and supervising facilities for protection are found. For the boundary-regulations, it is based on the concepts of physical and psychological borderlines; walls either vertical or horizontal, or such obstacle-related methods are suggested for the physical borderline, and space structure and symbols-related methods are found for psychological borderline. Finally, for the case of personalization which is related to the expression of identity, design-related methods are suggested.