• 한국정보교육학회:학술대회논문집
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• 2006.08a
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• pp.123-128
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• 2006

수학 학습은 구체적인 사물의 조작을 통해 추상적인 개념을 습득하는 과정이다. 이 과정에서 여러 가지 학습 도구들이 사용되어지는데, 그 중에서 컴퓨터를 활용한 Logo프로그램을 도입하여, 도형 문제해결과정에서의 부정확한 도형 개념과 정의로 인한 오류를 줄여 정확한 개념과 정의를 형성하는 지도 방안을 마련하고, 실제 수업을 통하여 일반적 수학 도형 수업보다 Logo를 활용한 수학 도형 수업이 도형 문제해결과정에서 학습자가 오류를 줄이는데 효과가 있는지 알아보고자 한다.

• Education of Primary School Mathematics
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• v.12 no.2
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• pp.81-97
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• 2009

Visual representations play an important role for students to understand the meaning of a given problem, devise problem-solving approaches, and implement them successfully. The purpose of this study was to investigate how 6th graders would use visual representations in solving mathematical problems and in what ways such use might affect successful problem solving. The results showed that many students preferred numerical expressions to visual representations. However, students who used visual representations, specifically schematic representations, performed better than those who employed numerical representations. Given this, this paper includes instructional implications to nurture students' use of visual representations in a way to increase their problem solving ability.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2004.10a
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• pp.539-542
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• 2004

배낭 문제는 조합 최적화 문제로서, 다항 시간(polynomial time)에 풀리지 않는 NP-hard 문제이다 이 문제를 해결하기 위해 기존에는 DNA 컴퓨팅 기법과 GA 등을 사용하여 해결하였다. 하지만 기존의 방법들은 DNA의 정확한 특성을 고려하지 않아, 실제 실험과의 결과 차이가 발생하고 있다. 본 논문에서는 DNA 컴퓨팅 실험 과정에서 발생하는 DNA 조작 오류를 최소화하고, 보다 정확한 예측을 위해 함수 언어인 Haskell을 이용한 코드 최적화 DNA-Haskell을 제안한다. 코드 최적화 DNA-Haskell은 배낭 문제 중 (0,1)-배낭 문제에 적용하였고, 그 결과 기존의 DNA 컴퓨팅 방법보다 실험적 오류를 최소화하였으며, 또한 적합한 해를 빠른 시간 내에 찾을 수 있었다.

• School Mathematics
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• v.10 no.4
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• pp.583-601
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• 2008

The creative productivity is regarded as an essential factor to perform the gifted education. While it is very important to cultivate and to expand a creative productivity through mathematically problem solving in gifted education, we have difficulties in actual education of the (mathematically) gifted, even are there few researches/studies which deal with teaching and guiding the creative problem solving in mathematically gifted education, it is hard to find a guideline that provides proper ways (or directions) of learning-instruction and evaluation of the mathematically gifted. Therefore in this study, the researcher would provide a learning-instruction model to expand a creative productivity. The learning-instruction model which makes the creative productivity expanded in mathematically gifted education is developed and named MG-CPS(Mathematically Gifted-Creative Problem Solving). Since it reflected characteristics of academic- mathematical creativity and higher thinking level of the mathematically gifted, this model is distinguished from general CPS. So this model is proper to provide a learning experience and instruction to the mathematically gifted.

• Journal of KIISE:Computer Systems and Theory
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• v.27 no.12
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• pp.967-973
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• 2000

본 논문에서는 신뢰할 수 없는 고장추적 장치로 구성된 비동기적 분산 시스템 하에서 선출(election) 문제와 합의(consensus) 문제의 관련성에 관하여 연구하고자 한다. 먼저 선출 문제는 합의 문제보다 더욱 어려운 문제임을 보인다. Chandra와 Toueg는 [8]에서 합의 문제는 비동기적 분산 시스템에서 신뢰할 수 없는 고장 추적 장치(unreliable failure detector)를 이용하여 해결 할 수 있음을 언급하였다. 그러나, 합의 문제와는 대조적으로 선출 문제는 시스템 상에서 단 한 개의 노드가 죽은 경우에도 신뢰 할 수 없는 고장 추적 장치를 이용하여 선출 문제를 해결할 수 없다. 이는 선출 문제는 합의의 문제보다 더욱 어려운 문제임을 의미한다. 보다 엄격하게 표현하자면, 선출 문제를 해결하는데 필요한 가장 약한 고장 추적 장치 (perfect failure detector) 이어야 하는 것으로, 이는 합의 문제를 해결하는데 필요한 가장 약한 고장 추적 장치보다 확실히 강한 것이다. 선출 문제가 합의 문제보다 어렵다는 것을 보이기 위해 축소(reduction) 프로토콜을 이용한다.

• Stress
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• v.26 no.4
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• pp.350-355
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• 2018

Background: The purpose of this study is to investigate the mediating effect of negative problem orientation in the association between intolerance uncertainty and worry. Methods: Participants who were 531 undergraduate students in Chungbuk were administered Intolerance Uncertainty Scale (IUS), Negative Problem Orientation (NPO; SPSI-R), Penn State Worry Questionnaire (PSWQ). Results: The results are as follows. Intolerance of uncertainty had statistically significant positive correlation with worry. Negative problem orientation had a partial mediating effect in the association between intolerance uncertainty and worry. Conclusions: This result suggested the importance of intolerance of uncertainty and negative problem orientation in psychological approach to university students who have difficulty in worry.

• Communications of Mathematical Education
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• v.28 no.1
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• pp.131-154
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• 2014

The purpose of this study was to examine the effect of essay writing-centered mathematics instruction on problem solving and mathematical deposition in the elementary school. For the present study, two 6th grade classes with equivalent achievement in terms of problem solving and mathematical disposition based on the pretest. A total of 15 mathematics lessons focused on writing activities were administered to the experiment group for two months, while the textbook-based traditional lessons were given to the comparison group. Both quantitative and qualitative methods were adopted to analyze the data. The results of the present study showed that essay writing-centered mathematics teaching is statistically superior that the textbook-based mathematics teaching with respect to students' problem solving and mathematical disposition. In addition, it was evidenced that essay writing-centered mathematics instruction makes an influence on students' perceptions toward essay-based assessment in a positive way.

• The Journal of the Korea Contents Association
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• v.10 no.11
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• pp.468-475
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• 2010

We survey the effects of robot programming education using web 2.0 on improving problem solving ability. For this, we constructed a robot programming education system using springnote based web 2.0 and taught computer gifted students of D region. Furthermore, we investigated about the problem solving ability when the robot programming education using web 2.0 is executed. In conclusion, the robot programming education using web 2.0 stimulate problem solving ability for learners.

• Communications of Mathematical Education
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• v.11
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• pp.159-170
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• 2001

본 연구의 목적은 개방형 교수법에 의한 수업이 수학적 문제해결력과 신념 형성에 미치는 효과를 분석함으로써 수학 교수방법의 개선에 도움을 주는 데 있다. 본 연구를 통하여 얻은 연구 결과는 첫째, 개방형 수업 집단과 일반적 수업 집단간에 문제해결력에 있어서 유의미한 차이가 있었으며, 둘째, 개방형 수업 집단과 일반적 수업 집단간에 수학적 신념에 있어서도 유의미한 차이가 있었다. 본 연구의 결과를 통하여, 개방형 교수법에 의한 수업은 일반적 수업보다 문제해결력 및 수학적 신념 수준을 향상시킬 수 있는 교수법임을 시사한다.

• Fire Science and Engineering
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• v.24 no.6
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• pp.133-138
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• 2010

This study is aimed to investigate the relationship between job-related stressor, problem solving style and psychological distress and the effects of job-related stress and problem solving style on psychological distress of firefighters. The Job-related Stress Scale, Problem Solving Style Questionnaire, and the Symptom Checklist-Revised (SCL-90-R) were administered to 148 firefighters working in Seoul and Gyounggi. Correlation analysis revealed that job-related stress, problem-solving styles such as helplessness and problem-solving control correlated positively with psychological distress and that problem-solving confidence and approaching style correlated negatively with it. Multiple regression analysis showed that job-related negative cognition and emotion, helplessness and approaching style accounted for 43% of the variance in the psychological distress. Among problem-solving styles, helplessness had the highest predictive power for psychological distress. Self-reported helplessness is an important determinant of firefighters' reactions to problematic situations encountered in their job.