• Korean Security Journal
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• no.23
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• pp.1-19
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• 2010

As the world becomes more global, entry simplification measure increases many foreigners' entry and international marriage around the low income countries of southeast Asia. Those are adding multicultural phenomena to Korean society, which has a bad influence on public order environment and leads to side effect in society. Since the 9/11 terror attacks, a sudden increase in the threat of terror has been worldwide. Besides, the threat tends toward New Terrorism and contributes to factor to social malaise in Korea. Therefore, this study examines all the possibilities of hometown terrorism by multiculturalism and suggests measures for it. To achieve this, it is required to lead the people's understanding and national participation for multiculturalism. The mature civic awareness should be given priority over any others, which means the understanding and consideration of various countries' cultures and traditions. It is also necessary to inspect the dangers of hometown terrorism. Furthermore, there should be an urgent need for an institutional device to prevent and suppress terror through a close examination of countermeasures system of terror.

• Journal of Gifted/Talented Education
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• v.26 no.1
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• pp.101-122
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• 2016

The purpose of this study is to explore a possibility finding gifted underachievers who have high spatial ability, but low verbal ability in elementary science field. In Korea, because teachers used to refer students' academic achievement only when they recommend gifted students, underachievers used to be excluded. The participants are 5th-grade students in elementary school. In this research, developed teaching materials were given to students to find underachievers. Results of spatial ability test, verbal ability test, science academic achievement, non-verbal test, and interviews about light propagation concept were obtained. By analyzing results of this study, we found that spatial ability is the most important factors to understand light propagation. And there are some features to understand light propagation according to spatial ability. Lastly, this study shows the possibility of non-verbal test to find gifted underachievers with high spatial ability and low verbal ability.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.476-476
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• 2021

도시화로 인한 불투수율 증가는 자연 물순환을 왜곡시켜 표면 유출량 증가, 침투량 감소, 증발량 감소 등을 야기한다. 뿐만 아니라 도시화로 인한 인구밀도 집중은 배출오염물질의 평균 농도와 물 사용량을 증가시켜 인공 물순환의 왜곡을 초래한다. 왜곡된 물순환의 회복을 위해 건전한 도시 물순환의 정의를 정립하는 것은 필수적이다. 본 연구는 물순환과 관련된 문헌조사와 평가 분석 방법을 검토하여, 건전한 도시 물순환을 지속가능성, 공평성, 안전성, 효율성 측면에서 시간, 공간, 이해관계자들이 균형을 이루는 것에 초점을 맞추고자 한다. 과거와 현재 상태, 그리고 미래 기후변화시나리오 적용 시 어떤 변화가 있으며, 이에 따른 물순환 관리체계가 확보될 수 있는 모습, 공간적 측면에서 물의 수평적·수직적 이동이 치우침이 없는 모습, 수요자 입장에서 가뭄이나 홍수로 인한 재산·인명 피해가 최소화된 모습, 공급자 입장에서 수량·수질 관리체계가 확보된 모습을 각각 지속가능성, 공평성, 안전성, 효율성으로 정의 내렸다. 도시 물순환의 적절한 상태를 제안하기 위해서 도시 물순환의 지표로 증발산율, 지표수유출률, 지하수유출률, 침투율로 선정하였다. 앞서 언급한 네 가지 측면(지속가능성, 안전성, 공평성, 효율성)에서의 모습과 네 개의 지표 상태를 비교하여 균형 잡힌 도시 물순환의 상태를 제안하고자 한다. 정의에 제시된 네 가지 측면에 대한 하위 항목은 WAMIS, KOSTAT 등을 통해 조사하고 국내 주요 도시와 서울대학교 관악캠퍼스 내에서 분석하고자 한다. 본 연구를 통해 도시 정책 설립 및 이해관계자들에게 수문학적 관점에서 건전한 도시화의 방향을 줄 수 있을 것이다.

• Education of Primary School Mathematics
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• v.14 no.1
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• pp.69-79
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• 2011

The purpose of this study is to analyze 3rd, 4th and 5th graders' probability understanding and raise issues concerning instructional methods and search for the possibility of learning probability. For the purpose, a descriptive study through pencil-and-paper test regarding fairness, sample space, probability of event, probability comparison, independence and conditional probability was conducted. The following conclusions were drawn from the results obtained in this study. First, the 3rd, 4th, and 5th grade students scored the highest in the sample space questions. In descending order of skill, the students scored the highest in sample space following probability of events, fairness and probability comparison. Second, however, the level of independence understanding was low. There was no meaningful differences between grades and the conditional probability was the least understood. The independence is difficult to develop naturally according to cognitive development. The conditional probability recognizing the probability of an event changes in non-replacement situations was very difficult for these students. Third, there were significant differences between the 5th graders and the 3rd and 4th graders in the probability comparison questions. It shows that 5th graders understand the concept of proportion when they compare equal ratio probability of an event. The 3rd graers could do different ratio probability of an event more easily than equal ratio probability of an event after they were instructed on probability comparison.

• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.39 no.11
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• pp.1077-1085
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• 2011

Various stakeholder's expectations and constraints are to be efficiently resolved into a program consensus prior to the beginning of its substantial design processes. This study focuses on the analysis of the stakeholder's expectations in determining the design requirements at the initial stage of space exploration programs including Naro launcher and currently on-going KSLV-II program. Naro program seems to unilaterally account for the government expectations of accelerating program phase speed without making any efforts to converge various expectations from related sectors. The planning of Naro launcher is also found lack of the concept of operations (ConOps), which is of critical importance by envisaging the operational applications of end products. Similarities are found in KSLV-II program regarding the lack of implementation for stakeholder's expectations. Moreover, the government plan for KSLV-II disclosed without considering all expectations and other comments. The increase in design conflicts and program uncertainties would be unavoidable, if the government plan for KSLV-II would be insisted. It is required to modify the government plan and to establish the ConOps with the convergence of stakeholder's expectations at this early stage of the program.

• School Mathematics
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• v.14 no.3
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• pp.297-313
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• 2012

The purpose of this paper is to discuss the potential and to examine the effect of narrative, as an alternative approach to teach formal proof in more easier and comprehensible way. Identifying the key elements of narrative in proof, we constructed a narrative that derives the equation of function translation. We examined the effect of teaching through the narrative, in comparison with teaching the corresponding proof, on low-achieving students' instrumental understanding and relational understanding of function translation. Since we found no statistically significant differences between the experimental and the comparison group, this study could not conclude that teaching through the narrative was more effective than teaching the corresponding proof. But there were some qualitative differences in the relational understanding responses and the evaluation of the teaching between two groups. These findings suggested some potential of narratives that complement the formal proof.

• Education of Primary School Mathematics
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• v.26 no.2
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• pp.83-97
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• 2023

Nominalization is one of the grammatical metaphors that makes it easier to mathematize the target that needs to be converted into a formula, but it has the disadvantage of making problem understanding difficult due to complex and compressed sentence structures. To investigate how this nominalization affects students' problem-solving processes, an analysis was conducted on 233 third-grade elementary school students' problem solving of eight arithmetic word problems with or without nominalization. The analysis showed that the presence or absence of nominalization did not have a significant impact on their problem understanding and their ability to convert sentences to formulas. Although the students did not have any prior experience in nominalization, they restructured the sentences by using nominalization or agnation in the problem understanding stage. When the types of nominalization change, the rate of setting the formula correctly appeared high. Through this, the use of nominalization can be a pedagogical strategy for solving word problems and can be expected to help facilitate deeper understanding.

• Journal of The Korean Association For Science Education
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• v.28 no.8
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• pp.796-813
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• 2008

A good understanding of how gifted science students understand physics is important to developing and delivering effective curriculum for gifted science students. This dissertation reports on a systematic investigation of gifted science students' reasoning model in learning physics. An analysis of videotaped class work, written work and interviews indicate that I will discuss the framework to characterize student reasoning. There are three main groups of students. The first group of gifted science students holds several different understandings of a single concept and apply them inconsistently to the tasks related to that concept. Most of these students hold the Aristotelian Model about Newton's second law. In this case, I define this reasoning model as the manifold model. The second group of gifted science students hold a unitary understanding of a single concept and apply it consistently to several tasks. Most of these students hold a Newtonian Model about Newton's second law. In this case, I define this reasoning model as the coherence model. Finally, some gifted science students have a manifold model with several different perceptions of a single concept and apply them inconsistently to tasks related to the concept. Most of these students hold the Aristotelian Model about Newton's second law. In this case, I define this reasoning model as the coherence model.

• Journal of Ethics
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• no.85
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• pp.167-186
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• 2012

This paper analyzes the meaning of sustainability in sustainable development in the ecological ethics, and suggests the importance of ecological sustainability. In the discussion of ecological sustainability the relation between sustainability and change should be regarded as not conflictual but interactive. The concept 'ecological' in this context means network, and the concept 'sustainability' means the relationship between changing being(or beings) which constitutes ecological system and its unchanging being(or whole relation). So there are two axes of human and ecological system, and three elements namely network which means mutual dependence of human and nature, sustainability which means the maintenance of ecological relations, and responsibility which humans should take for the sustainability, in the ecological sustainability. The maintenance between being and relations of beings, changing sustainability, the priority of being to non-being, mutual interdependence on the basis of solidarity of beings are important values in the ecological sustainability.

• Cross-Cultural Studies
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• v.52
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• pp.1-29
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• 2018

The notion of 'gift' is one of the effective and fruitful codes for understanding Western civilization. In this study, we will shed light on several meanings, especially by comparing among the three French philosophers that expressed interest in this notion: they are Mauss, Derrida and $Ric{\oe}ur$. Called "father of French ethnography", Mauss claims, in his famous article "Essay on the Gift", that the gift is paradoxically a kind of economic exchange dominated by three obligations: to give, receive, and return. But he strives to establish a moral theory based on the obligation to give. Under the influence of Mauss, Derrida deconstructs the theory of Mauss by devoting attention to 'time', one of the determining elements in studies on the gift. Derrida observes that the gift is established just at the extremely short moment of emergence of the act of giving and that this act is transformed into an economic exchange with passing of time. From it, the impossibility of the gift is derived despite its concrete and real emergence and existence. Under the influence of Mauss, $Ric{\oe}ur$, for his part, is interested in the notion of giving as part of the dialectic between 'love' and 'justice'. According to him, whereas justice is dominated by the economy of gift, namely the logic of equivalence, love, by the logic of 'superabundance'. He focuses on establishing 'Supra-ethics' by considering the fact that the gift is at the core of his religious and philosophical vision. Finally, let us point out that in $Ric{\oe}ur$, this notion of gift ('don') is closely linked to forgiveness ('pardon'), that holds in it the secret of understanding regarding the 'fallible' and 'capable' man.