• Journal of The Korean Association For Science Education
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• v.43 no.2
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• pp.99-110
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• 2023

In this study, in order to strengthen the AI utilization competency of pre-service secondary science teachers, a project activity in which pre-service teachers directly create an 'AI-based molecular structure customized learning support tool' by using Google's teachable machine was developed and applied. To this end, the program developed for 26 third-grade pre-service teachers enrolled in the Department of Chemistry Education at H University in Chungcheongbuk-do was applied for 14 sessions during extracurricular activities. Then, the perceptions of 'understanding how AI works', 'efficacy of using AI in science classes', and 'plans to utilize AI in science classes' were investigated. As a result of the study, it was found that the program developed in this study was effective in helping pre-service teachers understand the operating principle of AI technology for machine learning at a basic level and learning how to use it. In addition, the program developed in this study was found to be effective in increasing the efficacy of pre-service teachers for the use of AI in science classes. And it was also found that pre-service teachers recognized the aspect of using AI technology as a new teaching·learning strategy and tool that can help students understand science concepts. Accordingly, it was found that the program developed in this study had a positive impact on pre-service teachers' AI utilization competency reinforcement and perception improvement at the basic level. Implications of this were discussed.

• Journal of the Korean Chemical Society
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• v.45 no.2
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• pp.177-182
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• 2001

An instructional model using multiple analogies according to component process (MACP) was designed on the vasis of schema theory and comornent process theory in analogical reasoning. This model has ？ phases: introducting multiple analsgs, extracting multiple analogs, extracting common attributes of analogs, introducing target conanother context. Te instructional effects of this model upon students' conceptual understanding and learning motivation were compared with those of the Teaching-With-Analogy (TWA) and non-analogy instructions. Three classes of 8th grade were randomly assigned to MACP, TWA, and control group, respectively, Subjects were taught about chemical changes and reactions for 10 class hours. The ANCOVA results indicated that the scores of the conceptions test for the MACP group were significantly higher than for the control graup. However, no significant differences were found among the three groups in the test scores of learning motivation.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2016.11a
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• pp.299-301
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• 2016

현대 사회에서 테러는 국제적으로 매우 빈번하게 일어나고 있으며, 대한민국도 더 이상 테러의 안전지대가 아니라는 뉴스가 보도되고 있다. 하지만 우리에 테러의 인식에 따른 시각은 다소 편협하여 성별, 나이, 직위, 장소등 많은 부분에서 갈등을 갖으며, 또한 한반도는 남북한의 갈등으로 인한 특수성은 게릴라 전을 테러라고 인식하는 시각이 있다. 국내 특수성으로 인해 테러를 전쟁의 영역으로 보고 테러대응 전략은 국가 안보로 많이 치우쳐져 있다. 역사와 정치적으로 또한 테러는 이념대립으로 인한 전쟁으로 치우쳐 전쟁의 전략에 한 부분으로 인식 되어 왔다는 것이 사실이다.(Rumyana G., 2014) 이는 전쟁의 시각에서 테러를 잘 설명하고 있다. 한편, 테러의 개념은 시간이 지남에 따라 기존의 안보의 개념뿐 아니라 재난의 개념에서도 찾을 수 있다. "불평등한 사회에 대한 민중의 분노로 이해하여야 한다"고 스위스 진보적 사회학자 장 징글러(Jean Ziegler) 는 말하며 무고한 사람들을 타겟으로 한 정치적 목적을 이루기 위한 비합법적 무력 사용으로 보았다. 즉, 비합법적 무력사용으로 무고한 다중(Innocent people)에게 폭력을 행사한 것이다. 젠킨스와 라쿼르의 정의를 살펴보면 "테러리즘이란 폭력 혹은 폭력의 위협이다"라고 정하였다.(Jenkins 2004) 폭력이란 형법에서는 다른 사람에게 상해를 입히거나 협박하거나 하는 등의 행위와 함께 다른 사람을 감금하는 행위, 주거에 침입하는 행위, 기물의 파손 등에 대해서도 폭력이라 표현한다. 철학, 정치학 등의 학문에서는 다른 사람 또는 국가나 세력을 제압하는 힘을 일반적으로 지칭하기도 한다. 힘자랑이나 힘겨루기가 이에 속한다. 무력의 사용으로 사회에 심리적인 영향을 끼치며 사회적 파괴를 일으키는 것을 보편적 테러의 개념으로 볼 수 있다. 테러는 국가 통치 질서와 사회질서 안정에 큰 위협과 혼란을 초래하는 파괴행위의 무력행사로 국가의 재난 상황을 유발하는 인류가 만든 재난으로 볼 수 있다. 자연현상으로 발생하는 자연재해는 인류의 시점에서 재난으로 해석된다. 마찬가지로 사회현상으로 발생하는 폭력적 파괴행위에 대한 피해는 인류의 시점에서 재난의 현상으로 해석 되어야 한다. 과학기술이 발달하면서 첨단기술을 이용한 폭력행위와 파괴의 두려움은 정보통신 기술의 발달로 두려움의 전파 속도도 빨라 질 것이다. 따라서 테러행위의 극복을 위해서는 테러를 인적재난(Man-made Disaster)로 보고 재난의 범주로 포함하여 미래의 테러를 위한 대비전략을 수립해야 할 것이다. 이를 위해 본 논문에서는 학계의 학자들과 기관 및 민간 의 전문기관들에 따른 테러의 정의를 분석하고 재난정의를 고찰하여 시사점을 제시하고, 대테러 대비 전략의 방향에 기틀을 마련하고자 테러정의를 도출하였습니다.

• Journal of the Korean Chemical Society
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• v.52 no.1
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• pp.84-95
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• 2008

In this study, preconceptions held by chemistry major secondary school science teachers were searched in relation to explanations of water evaporation phenomena with phase equilibrium diagrams. 25 chemistry major science teachers were selected to complete questionnaires developed in this study and 6 among of them were selected to participate in follow-up interviews. Among these, 10 participants were selected for an evaluation of the change of their preconceptions through lessons developed in this study. From the results, it was found that many teachers believed that the phase equilibrium diagram could not explain water evaporation phenomena. They also thought that there was no relation between vapor pressure and the vertical axis of the phase equilibrium diagram. However, after the lessons in earth science, they recognized that the vapor pressure curve of the phase equilibrium diagram could be explained by adopting a saturated vapor curve. Because they had known the process of application the conceptions of saturated situation, nonsaturated situation, process of equilibrium movement in saturated vapor curve. They could understand natural phenomena such as evaporation with the phase equilibrium diagram through a change in their conceptions as guided from science lessons integrating earth science and chemistry.

• Journal of KIISE
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• v.43 no.8
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• pp.857-868
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• 2016

With changing software industry structure, the emerging concept called Software Ecosystems (SECO) has various challenges that software engineers have to overcome. In market-driven software product development, they should have the capability to offer high value products to their own business and their customers in order to being competitive. Each stakeholder's perspectives and interests should be reconciled in terms of requirements so that engineers can offer high value products through requirements selection. Existing works have just mentioned the need of requirements negotiation between stakeholders without proposing detailed guidelines or practice. In this work, a systematic Requirements Negotiation process is proposed to resolve conflicts of interests of stakeholders in SECO. The interests of stakeholders are analyzed based on goal-based requirements engineering. The rationale of requirements conflict is structured for management. A stepwise requirements negotiation process aims at resolving requirements conflict by applying game theory concepts based on self-interested behaviors of stakeholders.

• Journal of the Korean Chemical Society
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• v.45 no.1
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• pp.76-82
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• 2001

In this study, the effects of grouping method (homogeneous/ heterogeneous) considering students' teamwork skills on their conceptual understanding, perceptions of science learning environments, communication anxiety, communication ability, and perceptions toward small group discussions were compared. Students were taught concerning changes of states, density, and dissolution for 9 class periods. The ANCOVA results indicated that there was no significant difference in the conceptions test scores. In the subcategory of 'students' negotiation' of the perceptions of science learning environments test, high teamwork skill students perceived more positively in the heterogeneous group, but low teamwork skill students in the homogeneous group. No significant differences were found in the communication anxiety. More students in the heterogeneous group perceived unequal participation as a disadvantage of the small group discussions than those in the homogeneous group.

• Proceeding of EDISON Challenge
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• 2014.03a
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• pp.15-27
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• 2014

양자화학 (quantum chemistry)을 처음 접했을 때, 이전까지의 고전역학 (classical mechanics)에 익숙한 대다수의 학생들은 양자화학을 받아들이는 데 어려움을 겪는다. 모형계에 양자역학 (quantum mechanics)을 직접 적용하여 봄으로써 생소한 양자 개념에 대한 이해를 도울 수 있다. 본 논문에서는 양자동역학 (quantum dynamics)을 수치적으로 구현하는 계산 프로그램을 모형계에 적용하여 양자 개념을 설명할 수 있는 몇 가지 예를 보이고자 한다. 1 차원 시간의존 슈뢰딩거 방정식 (1-D time-dependent $Schr{\ddot{o}}dinger$ equation)의 해를 얻어 양자동역학을 구현하였으며, 그에 해당하는 고전동역학은 뉴턴 방정식 (Newton's equation)의 해로 얻어졌다. 조화 진동자 퍼텐셜 (harmonic oscillator potential), 모스 진동자 퍼텐셜 (Morse oscillator potential), 이중 우물 퍼텐셜 (double-well potential), 네모 퍼텐셜 장벽 (rectangular potential barrier), 그리고 에카트 퍼텐셜 (Eckart potential)에 대한 계산을 수행하였다. 두 가지 동역학을 비교하기 위하여 계산 결과의 시각화 (visualization)를 이용하고 동역학 특성의 차이를 비교하는 차별화 (differentiation)를 강조한다. 영점에너지 (zero-point energy), 위상어긋남 (dephasing), 터널링 (tunneling), 그리고 반사 (reflection) 현상과 같은 양자동역학의 특징을 고전동역학과 비교함으로써 직관적인 이해를 도울 수 있었다. 이러한 결과는 양자화학에 입문하는 학생들을 대상으로 쓰일 수 있는 효율적인 강의 모델을 제시할 것으로 기대한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2008.05a
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• pp.867-870
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• 2008

공공기관 및 기업들은 성장과 생존을 위한 경쟁력을 갖추기 위해 여러 경영 혁신 방법들을 도입하고 끊임없는 변화를 시도해 가고 있으며, 경영전략과 경영활동의 전략적인 연계를 위한 방향 설정과 자원투입에 노력을 기울이고 있는 상황이다. 이에, 본 논문은 기관의 비전과 목표 달성을 지원하는 전략경영 개념과 관련된 기술동향 및 추진 현황에 대해 이해하고, 전략경영을 추진하기 위한 큰 밑그림으로 ITA 기반의 전략경영정보화체제에 대한 정의와 역할 정립을 통해 향후 추진해야 할 목표시스템을 제시하였다.

• Journal of the Korean Chemical Society
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• v.56 no.6
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• pp.731-738
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• 2012

The purpose of this study is to analyze the understandings of science high school students on the conception of chemical cell in relation to chemical equilibrium from the microscopic viewpoint at molecular level through questionnaires and follow-up interviews. The results show that they have high understandings on the chemical equilibrium states in the electrochemical cell and on the redox reaction taking place simultaneously when a metal electrode is immersed in the metal ion solution. However, they do not fully comprehend the development of electrical potential difference, electron movement, electrode potential measurement in the half-cells, and calculation of the net cell voltage between anode and cathode in the chemical cell because of difficulties in the microscopic understanding the interaction on the interface at the electrode and the electrolyte solution.

• Journal of The Korean Association For Science Education
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• v.31 no.5
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• pp.801-814
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• 2011

The purposes of this study were to understand what is physics teachers' perceptions of idealization and to explore their teaching experiences about idealization in their physics classes. In order to achieve these research purpose, we conducted in-depth interviews with ten Korean physics teachers. The interview data was transcribed and analyzed interpretively. The results are as follows: (1) Physics teachers are not familiar with the term of 'idealization' but they understand the meaning of idealization and ideal condition. (2) Physics teachers understand the necessity of explicit mentions of idealization and ideal conditions in physics classes. (3) Physic teachers adapt conceptions of idealization and ideal condition into their lectures, experimental classes and evaluation strategies. Thus, the results of this study can provide theocratical understanding of idealization. It will help develop teacher education programs and physics teaching strategies. This research also suggested follow-up research questions about idealization in the physics education field.