• Korean Journal of Poultry Science
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• v.49 no.3
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• pp.167-180
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• 2022

Aves including chickens are currently one of the most representative vertebrates on the planet. More than 10,000 bird species are distributed among various regions around the world. Dinosaurs, which evolved from archosaurs, were once assumed to have gone extinct during the Cretaceous-Paleozoic extinction period. Since the mid-1990s, abundant dinosaur fossils have been found in China and various other parts of the world. Research articles on phylogenetic, evolutionary, and genomic studies of fossil taxa show that birds are living theropod dinosaurs. This review describes the link between birds and dinosaurs based on studies of their skeletal structures, feathers, respiratory organs, chromosomes, and metabolism. Birds are the only theropod dinosaurs that survived the mass extinction 66 million years ago. Dinosaurs did not go extinct and we are still living in the age of the dinosaurs.

• Journal of the Korean earth science society
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• v.23 no.7
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• pp.543-551
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• 2002

The purpose of this study is to investigate the types of middle school students’ responses to dinosaur extinction inconsistent with the students’ previous conceptions. The types of texts about ‘the cause of dinosaur extinction’ were developed; one that was based on students’ previous ideas, while the other was based on conflicting materials. The students’ responses to the conflict materials were classified into six types: rejection, reinterpretation, uncertainty, belief decrease, partial theory change, and conceptual change. These results show that the use of conflict materials does not always promote conceptual change. Therefore, teachers will be able to help students change their conceptions in science classrooms by understanding students’ various responses to conflict materials and designing instructional strategy concretely.

• The Science & Technology
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• v.33 no.1 s.368
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• pp.33-33
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• 2000

지질과학의 연구대상은 바위이며 그 속에 있는 화석으로 고생물들의 변화를 추적한다. 멸종될 공룡의 골격과 배설물로 공룡이 살아있던 환경을 알아낸다. 이제 인간의 지혜는 달을 비롯하여 화성ㆍ금성 등 행성을 탐사하는 시대로 접어들어 지질학자들은 이 행성의 연구로 수십억년 변천해온 우주의 신비도 벗기게 될 것이다.

• Journal of The Korean Association For Science Education
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• v.24 no.5
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• pp.959-976
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• 2004

The purpose of this study was to investigate high school students' ideas related with dinosaur extinction, to classify students' responses types with alternative hypotheses of inconsistent with their ideas, and then to examine their cognitive conflict levels and the degree of ideas change. To investigate students' ideas, we analyzed responses 98 eleventh graders of a high school in Anyang area. The results of this study were as follows: First, most of the students responded a large scale asteroid impact with the cause of dinosaur extinction, and rest of them responded changed Earth's climate accompanying tectonic activity, extreme volcanic activity, shortage of food, disease(virus) and decrease of their habitat. Also, they thought that dinosaur was exterminated not by just one reason but by several complex reasons. Second, the students' responses of alternative hypotheses were classified into six types: rejection, reinterpretation, uncertainty, belief decrease, partial theory change, and theory change. Third, except rejection and reinterpretation types, other four types were arousing of cognitive conflict and the percentage of the students who felt cognitive conflict was 62.3% and that of the students who took the theory change was just 6.1 %.

• Journal of The Korean Association For Science Education
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• v.25 no.2
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• pp.133-145
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• 2005

The purpose of this study was to identify the relation between preservice teachers' philosophical views on science and types of responses to alternative hypotheses. To identify preservice teachers' philosophical views on science, the extraterrestrial impact theory and the volcano-greenhouse theory, alternative hypotheses related to dinosaur extinction were administered to 37 elementary preservice teachers and 52 secondary preservice teachers. Subjects were required to write down their ideas before and after reading the alternative hypotheses, and then the dimensions of responses to initial ideas were analyzed. To analyze, Soh's Philosophical Perspectives Prove(PPP) was used. The results of this study were as follows: (a) elementary and secondary preservice teachers' philosophical views on science corresponds to eclecticism, (b) the main types of responses were partial theory change in elementary preservice teachers and rejection in secondary preservice teachers, (c) preservice teachers' philosophical views on science and types of responses were eclecticism-partial theory change in elementary preservice teachers and eclecticism-rejection in secondary preservice teachers.

• The Science & Technology
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• v.35 no.7 s.398
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• pp.6-9
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• 2002

간 커피에서 배터리 재료 추출/편두통의 원인 밝혀져/세계의 산호초가 파괴되고 있다/초고속의 기상 예보용 슈퍼컴퓨터/바르는 발기부전 치료제/설탕으로 오염물질 제거/화성 지하에 거대 얼음층/목성의 위성에 생명체 존재 가능성 희박/목성에서 위성 11개 새로 발견/22번째 아미노산 발견/플라스틱 분무로 식물해충 제거/외계 물체가 공룡의 멸종은 물론 번성과도 관련

• The Science & Technology
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• v.32 no.6 s.361
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• pp.92-92
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• 1999

영화는 과학기술의 산물이다. 멸종한 공룡을 영화의 주인공으로 내세운 '쥬라기 공원'이나 컴퓨터 이미지만으로 만들어진 영화 '토이 스토리' 등이 바로 새로운 기술과 상상력에 탄생한 것이다. 프랑스나 미국처럼 일찍이 산업과정을 거친 나라들에서 영화가 먼저 시작되었고 과학적 기반이 두터운 나라들의 영화가 경쟁력을 주도해 온 것이다.

• The Science & Technology
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• no.5 s.444
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• pp.10-13
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• 2006

몸에 좋은 지방 가진 돼지 개발/ 국제연구팀, 중성미자 질량 재확인/ NASA, 2009년 달 충돌실험/ 직립원인과 현생인류 중간의 두개골 발견/ 곤충의 美경제 기여, 年 570억 달러 이상/ 공룡 멸종 소행성 충돌시기 논란/ 깃털 진화이론 뒤집는 쥐라기 화석 발견/ 남극권 기온상승 타지역의 3배/ '딥 임팩트'로 드러나는 혜성의 비밀/ 물을 위로 흐르게 하는데 성공/ 뇌세포-컴퓨터칩 결합시킨 '뉴로칩' 개발

• Journal of the Korean earth science society
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• v.43 no.1
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• pp.224-235
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• 2022

This study aimed to confirm the status of media reports on space hazards using topic modeling analysis of media articles that are related to space hazards for the past 12 years. Therefore, Latent Dirichlet Allocation (LDA) analysis was performed by collecting over 1200 space hazards articles between 2010 and 2021 on solar storm, artificial space objects, and natural space objects from BIGKins news platform. The articles related to solar storm focused on three topics: the effect of solar explosion on satellites; effect of solar explosion on radio communication in Korea, centered on the Korean Space Weather Center; and relationship between aircrew and space radiation. The articles related to artificial space objects focused on three topics: the threat of space garbage to satellite and space stations and the transition of useful objects into space junk; the relationship between space garbage and humanity as shown in movies; and the effort of developed countries for tracking, monitoring, and disposing of space garbage. The articles related to natural space objects focused on two topics: International Space Agency's tracking and monitoring of near-Earth asteroids and the countermeasures of collisions, and the evolution and extinction of dinosaurs and mammals, with a focus on the collisions of asteroids or comets. Therefore, this study confirmed that domestic media play a role in conveying dangers of space hazards and arousing the attention of public using a total of eight themes in various fields such as society and culture, and derived education method and policy on space hazards.