• 한국과학교육학회지
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• 제39권6호
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• pp.799-807
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• 2019

이 연구는 과학중점학교의 1학년 프로그램이 학생들의 과학과 핵심역량과 과학학습동기를 향상시키는지 확인하기 위하여 진행되었다. 과학중점학교 1학년 프로그램은 과학탐구 기초교육, 조사 발표, 심화실험, 소논문 기초교육 등으로 구성된다. 프로그램 참여자는 총 262명이며, 설문 검사를 모두 수행한 학생은 169명이다. 집단중심 추세모형 분석을 통해 유사한 점수 변화 보이는 집단으로 구분하였다. 연구 결과 과학중점학교의 1학년 프로그램은 학생들의 과학과 핵심역량과 과학학습동기를 유의미하게 향상시켰다. 집단중심 추세모형분석 결과 약 40~60%의 학생들이 프로그램의 효과를 보았다. 인문계열을 선택한 학생들 중에서도 효과가 나타나는 학생들이 있었으며, 과학중점 계열을 선택한 학생 중에서도 교육적 효과가 나타나지 않는 학생들도 일부 있었다. 집단중심 추세모형 분석을 통해 개별 학생들의 변화 과정을 확인할 수 있는 방법론적 효과를 확인하였다. 이 연구는 과학중점학교 정책의 긍정적 효과를 통계적으로 확인하였으며, 과학중점학교 프로그램의 효과 분석을 위한 사례로서 의미가 있다.

• 한국과학교육학회지
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• 제17권1호
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• pp.103-113
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• 1997

The purpose of this study was to identify the preferable learning strategies in science learning and to find out the relationship between these strategies and scientific achievement of students in the secondary school. The learning strategies were tested with two categories, self-focused and work-focused learning. The four types of learning strategies in science learning were analyzed, and they were named to organization, monitoring, elaboration and memorization strategies, which were defined by GSSS test. In the self-focused learning, the organization and monitoring strategies were preferred to the elaboration and memorization strategies. Middle school students had a preference for memorization strategy (p=0.000), whereas high school students had a preference for monitoring strategy (p=0.015). In the case of organization strategy, female groups were preferable to male groups (p=0.027). In the second form of learning types, work-focused learning, the memorization strategy was the same preference as organization and monitoring strategies in the secondary school students, especially the male groups of high school students. The preference of elaboration strategy was relative lower compared with that of self-focused learning type. Middle school students had a preference for monitoring strategy (p=0.001), whereas high school students had a preference for elaboration strategy (p=0.001). The difference of each preference between male and female groups was not shown. From the analysis of correlation between learning strategy and scientific achievement, it showed that the monitoring strategy was commonly correlated with scientific achievement. In the self-focused learning, elaboration and organization strategies were correlated with scientific achievement in high school students (p<0.05). In the work-focused learning, memorization strategy was correlated with scientific achievement in middle school students, especially in male groups (p<0.05).

• 한국초등과학교육학회지:초등과학교육
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• 제40권2호
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• pp.191-209
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• 2021

이 연구에서는 과정중심평가의 특징이 배포된 과학과 과정중심평가 예시 문항 자료들에서 어떻게 구현되고 있는지를 분석하였다. 선행연구 리뷰를 통해 과정중심평가의 특징에 대한 분석 관점을 6가지로 추출하였다. 그 분석틀을 이용하여 시도 교육청 및 교육과정평가원에서 개발한 과정중심평가 장학자료의 초등 과학과 평가문항이 과정중심평가의 특징을 어떤 방법으로 반영하고 있는지 기술하였다. 연구 결과, 과정중심 평가의 특징은 초등 과학과 평가 문항 예시 자료들에 형식적으로 반영되어 있는 경우가 많았고, 과정중심 평가의 특징이 초등 과학과 평가 문항에 두드러지게 나타나지 않는 경우도 있었다. 개발된 예시문항들은 기존 과학과 수행평가 문항의 형태와 동일한 유형, 서·논술형 유형, 실험관찰과 유사한 유형으로 구분되었다.

• 한국초등과학교육학회지:초등과학교육
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• 제35권1호
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• pp.54-64
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• 2016

The purpose of this study is to develop instructional strategy which utilizes thinking maps focused on drawing as a measure to enhance science learning motivation, self-directed learning activity and science academic achievement of learners, and to examine the effects of its application. The target unit for this study is 'life cycle of plants' in the fourth grade of elementary school. Two classes of 4th grades of elementary school were selected and divided into two groups. The learners of experimental group have completed thinking map by drawing a picture to express the results to be observed and measured, and used it to arrange the learning contents. The result of this study is as follows. First, it is proven that using thinking maps focused on drawing actually helped improving the motivation of learners to study science. Second, it is proven that this strategy was effective to change their self-directed learning ability in positive ways. Third, it contributed to the improvement of learners' science academic achievement. We found out that the application of this strategy enabled them to enjoy the mapping using drawing, to be immersed in learning, to better recognize the scientific concepts and the structure of learning contents, and to have a positive awareness of the usefulness of thinking maps focused on drawing.

• 한국초등과학교육학회지:초등과학교육
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• 제33권1호
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• pp.105-114
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• 2014

The purpose of this study was to develop a teaching strategy focused on problem solving process and explore its effects on science creative problem solving ability, science process skills, science academic achievements and scientific attitudes of students after applying it. Teaching strategy focused on problem solving process employed brainstorming and PMI thinking strategies. The participants were the third grade students of both an experimental class(26 students) and a comparative class(25 students) at the S elementary school located in Goyang-City, Kyonggi Province. The developed strategy was applied to the experimental class for 9 periods of 'Separation of mixture' unit. The results of the tests on the science creative problem solving ability, the science process skills, scientific achievement and scientific attitude were statistically higher in the experimental class.

• 한국초등과학교육학회지:초등과학교육
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• 제38권1호
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• pp.16-30
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• 2019

This study aimed to develop and apply the process-focused assessment, and verify the assessment's effectiveness for improving scientific communication skills in elementary science learning. To achieve the aims of this study, the unit "Action of Electricity" in elementary science text book for 5-6th students was selected, and then 13 process-focused assessments were developed to improve scientific communication skills. 119 elementary school students in 6th grade participated in this research. it was performed to compare between 60 students on the general assessment and 59 students on the process-focused assessment in the results of achievement levels on scientific concept and scientific communication skills. The results were as follows: First, this study showed that process-focused assessment had higher educational effectiveness in specific area of scientific communication skills than the general assessment. Second, the process-focused assessment can help to form students' scientific concepts as the general assessment. Furthermore, the process-focused assessment group was more effective at reducing the non-scientific concept than the general assessment.

• 대한지구과학교육학회지
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• 제11권2호
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• pp.90-106
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• 2018

이 연구에서는 초등 과학과 수업에서 과정 중심 평가가 반영된 백워드 설계가 과학 학업성취도 및 과학 학습 동기에 미치는 효과를 확인하고자 하였다. 학습자의 성장과 발달을 지원하는 과정 중심 평가와 학습자의 온전한 이해를 추구하는 백워드 설계는 과학 학습에 큰 도움을 줄 수 있다. 연구 결과는 다음과 같다. 첫째, '지구와 달의 운동' 단원을 중심으로 과정 중심평가가 반영된 백워드 설계를 실시하였고, 성취기준도달에 도움이 되는 다양한 과정 중심 평가를 반영하였다. 둘째, 실험집단 학생들은 과학학업 성취도 검사와 과학학습 동기 검사에서 통계적으로 유의미한 차이를 나타냈다. 과학 교과의 특성을 반영한 과정 중심 평가가 백워드 설계와 연계되어 학교 현장에서 의미 있게 활용되길 기대한다.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.477-480
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• 2015

Construction projects are high-risk activities. When undertaking such projects in an international setting, it can be complicated by foreign exchange (FOREX) fluctuation risk. This affects the construction business performance in various ways, namely its progress due to delays, which in turn create further problems, specifically cost overruns as a result of price increase in raw materials, disputes, arbitration, litigation and even, total abandonment. Thus, the effective management of FOREX fluctuations is crucial. Previous studies have focused on the need for contract safeguards, adequate insurance, careful planning and management, as well as foreign exchange futures hedging to address some of the risks triggered by FOREX fluctuations. An analysis of FOREX fluctuations in the international construction industry revealed that more often it was focused on project-specific issues. Currently, there is a relative lack of awareness on Organizational Capabilities (OC), the abilities that owned by the organization, which is essential in managing the impact of FOREX fluctuations. Where research has focused on OC, these are viewed in isolation. Therefore, this study attempts to close the gap by proposing a framework on managing the impact of FOREX fluctuations in the international construction industry, employing the OC perspective.

• 세라미스트
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• 제22권2호
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• pp.110-121
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• 2019

Triboelectric nanogenerators and piezoelectric nanogenerators are a spotlighted energy harvesting method that converts the wasted mechanical energy from the environment into usable electrical energy. In the case of triboelectric nanogenerators, researches have been mainly focused on high permittivity and flexible polymer materials, and in the case of piezoelectric nanogenerators, researches have been focused on ceramic materials exhibiting high polarization characteristics. Recently, many researches have been conducted to improve durability and power in various environments by using composite materials which have flexible properties of polymer, high permittivity, thermal resistance and high polarization properties of ceramics. This article reviews the energy harvesting studies reported about composites materials using ceramics and polymers.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2005년도 춘계 종합학술대회 논문집
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• pp.352-356
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• 2005

콘텐츠 관리와 유통, DRM 기술은 각각 독자적으로 개발되어 왔으며 다수의 콘텐츠 서비스는 사용자 중심이기보다는 유통 시스템 안정화 및 콘텐츠 보안과 같은 시스템 중심으로 발전해 왔다. 본 논문에서는 대용량 멀티미디어 사용자를 위한 DRM 기반의 멀티미디어 콘텐츠 관리 및 유통 모델을 제안한다. 제안하는 모델은 콘텐츠 관리, DRM, Watermarking 기능을 통합 지원하며, 사용자 중심의 Indexing DBMS와 내용 기반의 멀티미디어 데이터 검색엔진으로 사용자의 편의성을 제공한다.