• The Bulletin of The Korean Astronomical Society
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• v.41 no.1
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• pp.63.4-64
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• 2016

본 발표에서는 DSLR 카메라와 CCD를 이용하여 과학고등학교의 R&E교육과정에서 수행한 몇 가지 실험과 그 결과를 소개한다. DSLR 카메라와 SQM을 이용한 밤하늘 특성 분석, CCD를 이용한 고유운동 측정, DSLR을 이용한 산개성단의 측광, CCD를 이용한 산개성단의 측광과 이를 통한 산개성단의 질량분리와 역학적 진화에 대한 연구이다. 실험은 부산일과학고, 울산과학고, 부산과학고에서 수행되었으며, 모든 실험의 결과는 학생들이 직접 관측한 결과를 바탕으로 이루어졌다. 본 실험의 방법과 과정은 일선 학교에서 응용하여 활용될 수 있으며, 실험의 결과는 향후 유사한 실험 교육을 수행할 때 기초 자료로 활용되어 질 수 있다.

• The Bulletin of The Korean Astronomical Society
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• v.34 no.1
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• pp.188.2-188.2
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• 2009

• Korean Journal of Mathematics
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• v.24 no.4
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• pp.737-750
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• 2016

In this note we describe some classes of rings in relation to Abelian property of factorizations by nilradicals and Jacobson radical. The ring theoretical structures are investigated for various sorts of such factor rings which occur in the process.

• The Bulletin of The Korean Astronomical Society
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• v.39 no.2
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• pp.120.2-120.2
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• 2014

본 연구에서는 2011년에 설립된 부산과학고등학교 별샘천문대에 있는 32인치 반사망원경을 비롯한 여러 천체망원경들을 간단히 소개하고 관측을 통해 성능을 분석하여 향후 교육과 연구에 활용할 수 있는 기초 자료를 제공하고자 한다. 관측기기들의 기계적인 특성을 분석하기 위해 가대의 추적 특성과 정밀도, 지향특성 등을 조사한다. BVI 표준성 관측을 통한 표준계 변환 결과를 제시하고, 한계등급에 대해 고찰한다. 이를 통해 32인치 주망원경과 기타 보조 망원경 및 교육용 기자재를 활용하여 관측할 수 있는 주제를 모색하고 그 한계를 제시한다.

• Korean Journal of Mathematics
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• v.21 no.3
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• pp.311-318
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• 2013

We continue the study of power-Armendariz rings over IFP rings, introducing $k$-power Armendariz rings as a generalization of power-Armendariz rings. Han et al. showed that IFP rings are 1-power Armendariz. We prove that IFP rings are 2-power Armendariz. We moreover study a relationship between IFP rings and $k$-power Armendariz rings under a condition related to nilpotency of coefficients.

• Journal of The Korean Association For Science Education
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• v.32 no.5
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• pp.866-878
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• 2012

The Natural Science High School is specialized in vocational education or training related to natural sciences such as biology or chemistry. Therefore, natural science high school students are expected to possess a high level of science learning motivation. This study aims to explore natural science high school students' level and structure of science learning motivation by comparing students in general high school. One hundred ninety three students from a natural science high school and 208 from a general high school participated in this study. We administered a questionnaire that consisted of seven science motivation components: 1) career motivation; 2) science grade motivation; 3) understanding the relevance of scientific knowledge; 4) need for learning science; 5) self-determination; 6) self-efficacy; and 7) attitudes toward science class. We employed independent t-test, path analysis, bivariate correlation, and stepwise multiple-regression for the statistical analyses. Our findings illustrated that the natural science high school students' levels on all seven variables were significantly lower than the general high school students.' The path analysis illustrated that career motivation and science grade motivation had relatively stronger influence on self-determination and self-efficacy in the natural science high school student sample than in the general high student sample. The explanatory powers of four independent variables (career motivation, science grade motivation, understanding the relevance of scientific knowledge, and need for learning science) predicting self-determination and self-efficacy were 30% higher in the natural science high school student sample than in the general science high student sample. These results suggested that natural science high school students' science learning motivation may be easier to change by extrinsic motivations such as career and science grade motivation.

• The Bulletin of The Korean Astronomical Society
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• v.39 no.2
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• pp.121.2-121.2
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• 2014

2013년 설립된 부산일과학고등학교 천문대는 교육 및 연구목적으로 12인치 굴절망원경, 16인치 반사망원경 및 다수의 소형망원경들이 설치되어 있다. 우리는 본격적인 관측, 연구를 수행하기에 앞서 망원경의 다양한 성능을 검증하여 향후 연구 활동에 기초자료로 사용하고자 한다. 본 연구에서는 망원경에 4K CCD 및 DSLR을 장착하여 얻은 관측 영상으로부터 망원경의 추적 특성, 지향정밀도, 광학적 특성을 고찰하고, Landolt (1992)의 표준성을 이용한 BV측광을 수행하여 표준계변환의 특성을 조사하였다. 또한 산개성단의 BV관측을 통해 한계등급을 측정하였다. 이 연구결과로부터 향후 부산일과학고등학교 천문대에서 수행할 수 있는 적합한 관측 연구의 방향을 제시한다.

• Macromolecular Research
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• v.16 no.7
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• pp.586-589
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• 2008

• 한국지구물리탐사학회:학술대회논문집
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• 2010.10a
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• pp.63-66
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• 2010

• Journal of Science Education
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• v.41 no.3
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• pp.281-296
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• 2017

The purpose of this study is to explore the science learning motivation of technical high school students through comparison with general high school students. 596 high school students and 1063 general high school students participated in the study. Three statistical methods were used for data analysis: two-way ANOVA, independent sample t-test, and Pearson correlation analysis. The results showed that the interaction between school type and grade had a significant effect on the difference of students' motivation for science learning. There was a significant difference in learning motivation among general high school students according to academic year, while there was no significant difference between first and second grader of technical high school students. Especially, technical high school students showed low level of science learning motivation compared to the students in general high school. The correlations among five motivational factors of science learning motivation were also significantly lower than that of general high school students. Lastly, the result of correlation analysis between science motivation and academic achievement showed that second year students in technical high school had less correlation coefficients than the first year students. Given these results, it is necessary to develop a educational strategy for enhancing science learning motivation of technical school students. We will discuss the direction of science education for technical high school based on our findings.