• 대한자원환경지질학회:학술대회논문집
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• 대한자원환경지질학회 2000년도 춘계 공동학술발표회
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• pp.84-85
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• 2000

• 한국지구과학회지
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• 제25권7호
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• pp.519-531
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• 2004

본 연구의 목적은 인지 수준에 따른 고등학생들의 지구와 달의 운동에 대한 생각을 알아보는 데 있다. 연구를 수행하기 위하여 경기도 수원시에 소재한 일반계 고등학교 10학년 학생 73명을 선정하여, 인지 사고 수준이 상, 중, 하인 학생 5명을 표집, 질적 분석의 대상으로 삼았다. 연구 결과, 학생의 인지 수준이 높을수록 지구와 달의 공전과 자전에 대한 개념이 비교적 논리적이고 과학적으로 정립되어 있었다. 인지 수준이 중간인 학생의 경우, 보편적으로 수업 시간에 학습한 내용을 비판 없이 무조건 수용하고 암기하려는 수동적인 학습 태도를 가지고 있었으며 파지된 개념이 확장되지 못하고 쉽게 망각되었다. 또한, 지구와 달의 운동을 설명하는 과정에서 유년적 개념 및 직관과 오인이 나타났으며 논리적 오류를 범하는 경우도 있었다. 특히 달의 위상 및 계절 변화의 원인에 대한 설명에서 학생들의 오개념이 심한 것으로 나타났다. 인지 수준이 낮은 학생들은 대체로 과학을 비롯한 학업 성취도가 낮음을 이유로 의욕적인 논리적 사고를 하려고 하지 않았으며, 개념을 인지하고자 하는 태도에서도 소극적이었고, 수동적인 ‘학습된 무기력’이 나타났다.

• 한국지구과학회지
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• 제23권2호
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• pp.180-187
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• 2002

The aim of this study was to investigate the factors affecting earth science problem-solving performances of elementary school pre-service teachers. The participants of the study were 81 students attending an elementary school teacher education university. The instruments of the study were paper-and-pencil tests, questionnaires, and interviews. The tests mainly measured the participants' problem solving abilities in the motions of the moon and the planets. Correlation and multiple regression techniques were used for data analysis. The results demonstrated that the pre-service teachers' problem solving abilities were low. Problem-solving performances were affected by the procedural knowledge, the participants' perception of the past earth science performance, self-efficacy, and the prerequisite declarative knowledge. Contrary to our expectation, the spatial visualization ability was not found to be related to the problem-solving performances. Implications of the study are drawn, and suggestions are made for further research.

• 한국한의학연구원논문집
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• 제11권2호
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• pp.23-33
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• 2005

Four Properties and five Flavors of Drugs is interpreted by adaptation of human body to the environmental theory(天人相應). The Structural model of the body is compared with sky, earth, sun and moon (天, 地, 日, 月). The natural changes of the four seasons give rise to that of Four Properties and five Flavors of Drugs. On equal terms it is happened in our body. On this study we can draw an analogy between sky, earth, sun & moon (天, 地, 日, 月) and the body. The six bu(六腑) is related to the earth, the five ju(五主) to the sky, the five jang(五臟) to the sun, the meridians system (經絡) to the moon. When spring, the air is warm, the water element of the earth is ascending, and the earth gives birth to the sour flavor. Like this, the water element is absorbed by six bu and then is ascended to the meridian system. When summer, the air is hot and the water element of the earth is floated, the earth make the bitter flavor. In the same way, the six bu absorbed the hot air from the five ju and the water element is quickly absorbed by six bu and then the water element is ascended to the meridian system. When rainy season (長夏), the earth creates the sweet flavor The sweet flavor give warmer energy to the five jang and the six bu. When autumn, the earth change the sweet flavor into pungent. The earth gives warmer energy to the sky, because of cool weather According to same process, the pungent flavor give warmer energy to the five jang and the six bu, and the meridian system gets back the water element from the five ju. When winter, the air is cold and the water element of the earth is hidden. The sky and the earth are not interchangeable. At that time, the earth produce the salty flavor and the water element is keeping in the meridian system.

• 한국윤활학회:학술대회논문집
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• 한국윤활학회 2002년도 proceedings of the second asia international conference on tribology
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• pp.389-396
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• 2002

In XXI century it is necessary to expect the recommencement and development of activities on mastering the Moon. In the long term it is construction of manned lunar bases with industrial, astrophysical, procuring, repair equipment and services. Interplanetary flights from the Moon demand smaller power expenditures, than from the Earth, therefore it is favourable to use its surface for the construction of space-vehicle launching sites. Flights of devices in libration points in the system 'Earth - Moon' are considered. Experience of engineering system creation for the Moon displays the great complexity in provision of serviceability and reliability of friction units. Open friction units should operate under following conditions on the Moon: pressure of environment (vacuum) $p\;>10\;^{-10}$ Pa; wide range of temperature change $+150^{\circ}C\;...170^{\circ}C$; high evaporability of lubricants; influence of temperature gradients and warping of constructions; sublimation of elements of constructional materials; irradiation of different physical nature; effect of micrometeorites; reduced gravitation; influence of abrasive particles of lunar ground; requirements on minimization of size and weight characteristics of a construction (high tension); undesirability (impossibility) of application of liquid and plastic lubricants; vibration, shock, acoustic loadings during start and landings to the Earth; difficulties in repair-regenerative operations in conditions of the Moon etc. Adhesive interaction of conjugated surfaces is the principal reason of possible failures of rubbed units on the Moon. In the research of the Moon automatic interplanetary stations of 'Luna' (USSR), 'Surveyer', 'Apollo' (USA) series were used. Stations executed functions of flying, landing, artificial satellites of the Moon, moon-rovers and manned spacecrafts such as 'Apollo'. The experimental- theoretical researches carried out in the sixtieth years on tribology for conditions of the Moon appeared to be rather useful to engineering of an outer space exploration and the decision of complex problems for the friction units operating in extreme conditions on the Earth. For the creation of highly loaded friction units for the long service life on the Moon it is required not only to use accumulated experience and designed technologies, but also to carry out wide scientific research.

• 한국지구과학회:학술대회논문집
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• 한국지구과학회 2010년도 춘계학술발표회 논문집
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• pp.73-73
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• 2010

The purpose of this study is to analyze illustrations, contents, and experiment in 6 kinds of science textbook from the 9th grade covering the phase change of the Moon (on the phase change of the Moon in six 9th grade science textbook) and to suggest coherent and effective contents and frame of the science textbook. Hence, the researcher decided the study problem. The study problems are as follows; 'Are the illustrations in the science textbook presented to help understand the phase change of the Moon depending on the position of the observer?', 'Does the contents of the book clearly mention the phase change of the Moon?', 'Can students understand the phase change of the Moon through the experiments in the science textbook?', 'Do illustrations, contents, and experiment of the science textbook consistently explain phase change of the Moon?'. 10 persons (9graduate students including the researcher) took part in this study. All things unanimously agreed upon by all participants were reflected in the results. The results are as follows. First, the universe observer's view point is mixed with the earth observer's view in illustration of these science textbook regarding the phase change of the Moon. Moreover, illustrations of some textbooks are presented with such words as 'sunrise', 'midnight' and consequently contain too much contents. Second, the contents of the science textbook concerning the phase change of the Moon is not described clearly. In addition, they don't give clear and detailed explanations for the reason of the phase change of the Moon. Third, all of the textbooks, except one textbook, describe the experiment regarding the phase change of the Moon with the earth observer's view point but don't specifically mention that the view point is that of the earth observer's view point. Fourth, illustrations, contents, and experiments in the science textbook don't coherently explain the phase change of the Moon. In addition, it is confirmed through the process of the result analysis that the described contents in the science curriculum is not well constructed or logical.

• 대한지구과학교육학회지
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• 제8권1호
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• pp.76-86
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• 2015

The purpose of this study is to take advantage of the smart teaching - learning programs about the unit of 'Earth and Moon' and find out how to apply the effect appears. Teaching-Learning program was conducted over eight lessons. And we analyzed the effect of the program at any time through the evaluation and interview. The results are as follows. First, this study proposed a method to assist in the teaching and learning of spatial ability for students' movement of the Earth and the Moon. The program takes advantage of N-Screen Applications were configured to allow both Earth observation insider perspective and the external multilateral perspective. This improves students' understanding qualitatively. Second, we applied the teaching and learning programs utilizing smart smart devices, and the result was a lot of low rank students' average score rises. In addition, we were able to see that many students' understanding and interest, self-confidence are improved.

• 한국항공우주학회지
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• 제40권1호
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• pp.69-77
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• 2012

1990년대 들어 달 탐사가 재개 된 후 2000년대부터 세계우주선진국들을 중심으로 달을 선점하기 위한 치열한 달 탐사 경쟁이 벌어지고 있다. 우리나라도 2020년경 자력 달 탐사를 목표로 선행연구를 수행 중에 있다. 본 연구에서는 한국형 달 탐사를 대비하여 지구에서 달로 가는 천이궤적 중 연료 최소화를 위해 다양한 천이궤적의 Delt-V를 비교 분석하였다. 시뮬레이션을 통해 한국형 달 탐사에 가장 적합한 지구-달 천이궤적을 확인하였으며, 실제 한국형 달 탐사시 유용한 자료로 사용될 것이다.

• 암석학회지
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• 제23권3호
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• pp.273-277
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• 2014

이 논문은 지구의 나이를 알기 위한 초기의 다양한 시도를 간략히 소개하고, 운석의 납동위원소 연대측정으로 처음으로 지구의 나이가 $4,550{\pm}70Ma$임을 밝힌 Patterson (1956)의 연구를 재조명한다. 태양계 초기의 진화과정은 성운가스가 식으면서 응축되어 만들어지는 고체입자 -> 이들 입자들이 서로 들러붙어 커지는 첨합과정을 통하여 행성 크기의 물체가 생성되는 것으로 생각되고 있다. 또한 이때 생긴 원시지구가 화성 크기의 물체와 충돌하면서 그 잔해가 달을 만들었다고 생각되고 있다. 이 일련의 과정에서 지구가 생성된 시기를 꼭 집어 말하기 힘들긴 하나, 현재 지구는 이 충돌의 직접적인 결과로 생각할 수 있기 때문에 이 충돌시기를 지구의 나이로 정할 것을 제안한다. 기존 연구를 고려하면 충돌시기는 태양계에서 가장 먼저 만들어진 운석물질의 나이(즉, 태양계의 나이) $4567.30{\pm}0.16Ma$와 지구와 달 암석에서 가장 오래된 나이 $4,456{\pm}40Ma$ 사이로 개략적으로 제한될 수 있다. 이 충돌시기는 태양계 초기 행성 크기의 물체가 만들어지는 시간간격을 밝히고, 충돌 이후 생성된 지구와 달의 마그마 바다의 열 역사를 규명하는데 매우 중요하기 때문에, 앞으로 보다 정확한 충돌시기를 측정하려는 노력이 요구된다.

• 한국과학교육학회지
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• 제33권3호
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• pp.664-678
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• 2013

This study aims to investigate gifted students' explanations for daily celestial motion from the Earth-based and heliocentric frames of reference. Eleven sixth-grade elementary school students were chosen for this study and data was collected through a questionnaire and an in-depth interview. The collected data was analyzed into celestial objects which are the Sun, the moon and the stars and analyzed based on the Earth-based and heliocentric perspectives again. As a result of the research, most gifted students were able to connect the Earth-based and heliocentric frames of reference with the Sun's daily apparent motion. However, they understood the daily apparent motion of the moon and the stars far less frequently compared to the Sun's motion and could not explain the Earth's rotation clearly. The result of the interview showed that the lack of understanding about the daily celestial motion was caused by inaccurate understanding of the Earth's rotation such as using memorized knowledge learned in school and guessing the answer.