• Journal of the Korean earth science society
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• v.31 no.2
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• pp.151-163
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• 2010

In this study, 10th grade students' views about the universe were surveyed and its affecting factors were investigated. Results showed that when hearing the word of 'the universe', 10th grade students considered it as 'a physical space'. Many students used 'feeling', or 'unknown space' to explain. When they portrayed the universe, many of them described it as a solar system scale. About the center and spatial limit of the universe, most students explained with the view of a heliocentric, geocentric or non-centered universe. Many students explained that the universe changed along with a direction as a physical space. These results were investigated again in different groups in terms of gender, beliefs, and familiarity with astronomy. As a result, students' models about the center, spatial limit, and the variation of the universe were different in the groups. Explanation of the origin of the universe was affected by the religious belief. Results showed that personal views of the universe are various, and many factors influence their views.

• Journal of Space Technology and Applications
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• v.3 no.3
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• pp.229-238
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• 2023

One of the important ways to improve the performance of magnetometers in satellite exploration is to reduce magnetic noise from satellites. One of the methods to decrease magnetic noise is by extending the satellite boom. However, this approach is often not preferred due to its high cost and operational considerations. Therefore, in many cases, removing interference from the satellite platform in the measured dataset is widely utilized after data acquisition. In this study, we would like to introduce an algorithm for removing magnetic noise observed from magnetometers installed on two solar panels and one main body without a boom.

• Bulletin of the Korean Space Science Society
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• 2010.04a
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• pp.30.1-30.1
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• 2010

한국천문연구원은 우주환경예보센터(Korean Space Weather Prediction Center) 구축사업의 일환으로 고층대기/전리층의 불균일 현상을 관측할 수 있는 VHF 간섭 산란 레이더를 대한민국 공군과 협의를 통해 충남 계룡 ($36.18^{\circ}N$, $127.14^{\circ}E$)에 설치하였다. 이 레이더는 2007년 '우주환경예보를 위한 중 저위도 고층대기 관측시스템 설계를 위한 기초연구‘를 통해 선정되어 2009년 설치가 완료되었으며 12월 말부터 정상 관측을 수행하고 있다. 5 소자의 총 24기의 안테나가 $12\times2$의 배열을 이루어 최대 출력 24kW, 단일 주파수 40.8MHz로 전리층 E층과 F층을 관측하여 중위도 고층대기의 불균일 현상을 관측하고 있다. 앞으로 천문연구원의 전천카메라, 자력계, 신틸레이션 모니터와 더불어 중위도 지역의 고층대기와 우주환경예보에 대해 지속적인 관찰 및 연구가 가능하다. 이 발표에서는 우리나라의 첫 고층대기/전리층 관측 VHF 레이더의 설치 과정과 현재까지 계룡 관측소에서 관측한 중위도 전리층의 레이더 초기 관측 자료를 소개하고자 한다.

• Publications of The Korean Astronomical Society
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• v.34 no.2
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• pp.17-28
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• 2019

The Korean Astronomical Society (KAS) Education & Public Outreach Committee has provided education services for children and school teachers in Cambodia over the past three years from 2016 to 2018. In the first year, 2016, one KAS member visited Pusat to teach astronomy to about 50 children, and in the following two years of 2017 and 2018, three and six KAS members, respectively, executed education workshops for ~ 20 (per each year) local school teachers in Sisophon. It turned out that it is desirable to include both teaching of astronomical knowledge and making experiments and observations in the education in order for the program to be more effective. Language barrier was the main obstacle in conveying concepts and knowledge, and having a good interpreter was very important. It happens that some languages, such as the Khmer of Cambodia, do not have astronomical terminologies, so that lecturers and even the education participants together are needed to communicate and create appropriate words. Handout hard-copies of the education materials (presentation files, lecture/experiment summaries, terminologies, etc.) are extremely helpful for the participants. Actual performing of assembling and using astronomical telescopes for night sky observations has been lifetime experience for some of the participants, which might promote zeal for knowledge and education. It is hoped that these education services for developing countries like Cambodia can be regularly continued in the future, and further extended to other countries such as Laos and Myanmar.

• KASI NEWSLETTER
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• s.98
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• pp.5-5
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• 2010

• The Bulletin of The Korean Astronomical Society
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• v.15
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• pp.10.3-10.3
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• 1990

• The Bulletin of The Korean Astronomical Society
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• v.25 no.2
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• pp.37-37
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• 2000

• The Bulletin of The Korean Astronomical Society
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• v.33 no.1
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• pp.87-87
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• 2008

• The Bulletin of The Korean Astronomical Society
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• v.27 no.2
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• pp.27-27
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• 2002

• Optical Science and Technology
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• v.6 no.4
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• pp.30-36
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• 2002