• Proceedings of the Korean Information Science Society Conference
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• 2006.06c
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• pp.235-237
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• 2006

로봇 소프트웨어와 같이 사용자의 요구사항과 주변 환경의 잦은 변화에 직면하는 소프트웨어는 스스로 문제 상황을 판단하고, 동적으로 문제 상황을 극복할 수 있는 기능을 검색하고 이용할 수 있어야 한다. 이를 위해 본 논문에서는 아키텍처 기반의 로봇 소프트웨어 환경하에서 온톨로지를 이용하여 로봇의 문제 상황 극복을 위한 소프트웨어의 아키텍처를 재구성 전략과 컴포넌트를 모델링하고 이를 이용하여 문제 상황을 해결 할 수 있도록 적합한 컴포넌트를 선택하는 메커니즘을 기술한다.

• Nuclear industry
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• no.1_2 s.11
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• pp.44-52
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• 1983

미국의 원자력개발이 정체되고 있다고 하는데 그 진상은 어떠한가? 또, 증식로개발의 진전상황, 사용후 핵연료의 저장문제와 재처리문제, 나아가서는 인허가개혁상황과 원자로수출, 안전성토의는 어떻게 진행되고 있는가? 미국의 원자력산업에 관한 이들 중요문제에 대해서 AIF (미국원자력산업회의)가 최근 일반에게 발표한 $\lceil$원자력발전정보자료$\rfloor$를 소개한다.

• Education of Primary School Mathematics
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• v.25 no.2
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• pp.197-211
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• 2022

In this study, we tried to find a way to improve the pedagogical decision-making practices related to the presentation order of 'large number' and 'small number' in problem situations of subtraction of the natural number. For this purpose, the elementary school teachers' perception about problem situations in real-life context of subtraction of natural numbers was investigated, and the collected data were analyzed qualitatively and quantitatively to identify teachers' pedagogical perceptions. As a result of this study, it was confirmed the need for consideration on how to set up a problem situations in real-life context of subtraction so that students can develop their ability to solve various types of problems. To this end, not only in a problem situation of subtraction where you have to think of 'large number' first and 'small number' later, but also about the introduction of problem situations in real-life context of subtraction in which you think about 'small number' first and 'large number' later, which often appears in real-life. You will need to recognize the need. And you should have a pedagogical view on this. The results of this study will be able to contribute to the preparation of pedagogical method that can expand the understanding of various problem situations where subtraction is applied from the lower grades of elementary school.

• Journal of Digital Convergence
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• v.12 no.1
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• pp.163-170
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• 2014

The purpose of this study was to explore the effect of need for closure on college students' problem recognition and communication behavior. Specifically, this research examined differences about situation recognitions and communication behaviors across level of need for closure factors (preference for order and structure, preference for predictability, decisiveness, discomfort with ambiguity, closed-mindeness). The results show that the participants with higher level of discomfort with ambiguity and low level of closed-mindeness are more likely to high problem recognition, constraint recognition, involvement recognition, and doing active communication behaviors.

• Communications of Mathematical Education
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• v.23 no.2
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• pp.429-459
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• 2009

The purpose of this study was to help the students deepen their mathematical understanding and practitioner improve her mathematics lessons. The teacher-researcher developed mathematical situation based problem solving instruction model which was modified from PBL(Problem Based Learning instruction model). Three lessons were performed in the cycle of reflection, plan, and action. As a result of performance, reflective knowledges were noted as followed points; students' mathematical understanding, mathematical situation based problem solving instruction model, improvement of mathematics teachers.

• Journal of the Korean earth science society
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• v.25 no.4
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• pp.205-213
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• 2004

The purpose of this study was to design the coaching strategies for the problem based learning and examine 'the problem situation' to analyze the process of learning as it applies to the students' perception on problem based learning. The steps of this model were as follows: 1) presentation of the problem situation 2) confrontation of the problem 3) know/ need to know 4) definition of the problem statement 5) collection and sharing of information 6)generation of possible solutions 7) assessment of the best fit of solutions 8) presentation of the solution. Problem-based learning steps and coaching strategies were designed and implemented to 2nd grade high school students for the environment teaching unit. The results demonstrated that group discussion in the know/need to know step was most helpful for students to review what they know and generate solutions. At first students tend to state problems widely but through repeated group discussions they gradually clarified the problems. In the students' personal reflection notes and perception questionnaire of problem-based learning, many students especially showed difficulties in defining the problem statement. In contrast they participated actively in the learning process and express their opinions enthusiastically. Therefore, this study suggests that developing problem situation based on real context is of great importance for implementing a problem based teaming model continuously.

• Journal of Elementary Mathematics Education in Korea
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• v.5 no.1
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• pp.77-98
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• 2001

This study has a purpose to find out how the problem posing activity by presenting the problem situation effects to the mathematical problem solving ability. It was applied in two classes(Experimental group-35, Controlled group-37) of the fourth grade at ‘D’ Elementary school in Bang Jin Chung nam and 40 Elementary school teachers working in Dang Jin. The presenting types of problem situation are the picture type, the language type, the complex type(picture type+ language type), the free type. And then let them have the problem posing activity. Also, We applied both the teaching-teaming plan and practice question designed by ourself. The results of teaching and learning activities according to the type of problem situation presentation are as follows; We found out that the learning activity of the mathematical problem posing was helpful to the students in the development of the mathematical problem solving ability. Also, We found out that the mathematical problem posing made the students positively change their attitude and their own methods for mathematical problem solving.

• The Journal of the Korea Contents Association
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• v.17 no.3
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• pp.238-252
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• 2017

In the digital media environment, individuals' information behavior about donation has been more interactive than ever. This study tried to figure out which factors impact communicative actions, based on the situational theory of problem solving(STOPS) in the donation situation for children with a rare incurable disease. This study tried to figure out the instrumental role of communicative action in donation situation. The findings from the survey(N=524) revealed that problem recognition and involvement recognition have a positive influence on a situational motivation, while constraint recognition had a negative influence. A referent criterion and a situational motivation have a positive influence on communicative actions. Also, a perceived moral obligation and a anticipated guilt have additional explanation of situational motivation for children with a rare incurable disease.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.04a
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• pp.544-547
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• 2016

WBAN (Wirless Body Area Network)은 IEEE 802.15.6에서 정의한 통신 표준으로 인체 내/외부 및 표면에 장착되는 무선 센서 장치들을 통해 의료 및 비의료 서비스를 동시에 제공하는 것을 목표로 한다. 이러한 WBAN은 인체 중심 구성과 네트워크 내부의 이동성 및 네트워크 단위의 이동성을 가지는 특성으로 인해 다수의 WBAN들이 좁은 공간에 공존할 수 있으며, 상호 간섭으로 인해 성능 저하와 같은 문제에 노출된다. 이러한 문제를 해결하기 위해 IEEE 802.15.6에서는 공존 상황을 이동성에 따라 3가지로 세분화 하였으며, 세분화된 각 상황에 적합한 공존성 해결 방안의 가이드라인을 제시하고 있다. 하지만 표준에서는 세분화한 공존 상황을 인지하는 알고리즘과 각 공존성 문제 해결방안의 상세 방안이 결여되어있다. 또한, WBAN의 공존성 문제를 해결하기 위해 제안된 기존의 연구들은 표준에서 정의한 공존상황을 고려하지 않고 있어 추후 표준 기반의 WBAN의 구현시 호환성이 결여된다는 문제점을 가지고 있다. 따라서 WBAN의 공존성 문제 해결에 대한 연구방향의 재조명이 필요한 때 이다. 본 논문에서는 IEEE 802.15.6 표준과 기존의 공존성 문제 해결 방안을 소개하며, 기존 연구의 연구 접근 방법을 분석하고 문제점을 제시한다. 또한, WBAN의 공존성 문제에 대한 새로운 접근 방법과 연구 방향을 제시한다.

• Journal of The Korean Association For Science Education
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• v.26 no.6
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• pp.765-774
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• 2006

The purpose of this study was to suggest an instructional direction for improving scientific problem-finding ability. For this purpose, the present study made an in-depth analysis about activity on problem finding tasks of high school students in an ill-structured scientific problem situation. Subjects were divided into two groups (cooperative and individual) and two kinds of problem finding tasks were administered to two groups. Results indicated that a cooperative activity on problem finding happened to a series of steps exploring problem situation, expressing knowledge and experience, discussing provisional problems, creating various problems and selecting the best problem. Besides, a cooperative activity on problem finding depended heavily on prior knowledge and experience, and in the meantime, various scientific concepts turned out to naturally be expressed. As for the problems found out during a cooperative activity, their scores in creativity factors, including the degree of agreement in original problem selection came out to be on the whole, as excellent. In addition, the types of the problems found out in open problem situation showed that they were more various than those found out in closed problem situation. Subjects perceived that activity on problem finding had positive influence on scientific concept and science process skills. Findings of this study have the following educational implications: First, it is needed to prepare for educational environment that enables students to explore various knowledge and information. Second, the offering of various opportunities is needed to enlarge the scope of scientific knowledge and experience. Third, it is needed to prepare for a study atmosphere that lets students express their knowledge and experiences freely.