• Journal of The Korean Association For Science Education
• /
• v.36 no.3
• /
• pp.423-434
• /
• 2016

The purpose of this study is to investigate preservice earth science teachers' mental models through applications of Coriolis force experiment apparatus. After the root of preconception was examined by face to face interviews based on the questionnaire, five preservice earth science teachers were finally selected for this study. The mental models about concept of Coriolis force was classified into naive mental model, static unstable mental model, dynamic unstable mental model, and scientific mental model through the result of individual interviews and their drawings. According to the mental model analysis about Coriolis' force conception, students C and M showed naive mental model about concept of Coriolis force before experiment. After the experiment, student M's model changed to static unstable mental model. Student C's model improved to dynamic unstable mental model. In adiition, students D and O's model improved from static unstable mental model to dynamic unstable mental model. In the case of student B, the dynamic unstable mental model was maintained after the experiment, however, student B's preconception changed to scientific concept. It turned out that a change occurred from low mental model level to integrated mental model after the application of the developed Coriolis' force experiment apparatus. According to the results, national curriculum is similar to static unstable mental model and the result of developed Coriolis' force experiment apparatus is similar to dynamic unstable mental model. It is suggested that it become the theoretical foundation to develop more comfortable and advanced Coriolis force experiment apparatus by improving the experiment apparatus.

• Digital Contents
• /
• no.9 s.148
• /
• pp.60-63
• /
• 2005

LCMS의 정의가 바뀌고 있다. 그동안 LCMS는 LMS와 개념 구분조차 이뤄지지 못했던 것에서 벗어나 e러닝 기술의 전반적인 변화와 발전을 수용하는 방향으로 진화하고 있다. 이에 따라 향후 LCMS는 사용자간 데이터와 콘텐츠를 주고받을 수 있는 지능형 서비스를 수행하는 동시에 웹서비스 등 개방형 환경과 연계된 시스템으로 발전될 전망이다.

• Electronics and Telecommunications Trends
• /
• v.10 no.2 s.36
• /
• pp.179-189
• /
• 1995

본 고에서는 우루과이라운드 협상 결과 세계 무역의 체계가 GATT에서 WTO체제로 변화되는 시점에 있어서 지적재산의 기본 개념을 재정립하고 선진국 및 우리나라의 지적 재산권 관리 동향을 조사, 기술하였다.

• Proceedings of the CALSEC Conference
• /
• 1997.11a
• /
• pp.69-77
• /
• 1997

★ 물류환경 변화 - 21세기 세계화, 정보화로 물류 환경 고도화 - 물동량 및 물류활동 급증 - 물류 정보시스템의 중요성 부각 - 물류업무에도 정보기술 도입이 본격화 ★ 국가 7대 기간전산망 사업추진 - 종합 물류 정보 전산망 구축 - 국방 전산망 구축(국방 군수전산망 구축 추진) ★ CALS 개념에 의한 범 국가적 물류 정보망 구축/연계 필요성 대두(중략)

• Information and Communications Magazine
• /
• v.31 no.6
• /
• pp.23-31
• /
• 2014

자율 네트워킹(autonomic networking)은 인간의 개입을 최소화하면서 환경의 변화에 따라 네트워크 스스로 자율적인 관리(self-management) 및 제어를 하도록 하는 혁신적인 개념이다. 본 고에서는 대규모이면서 이질적이고 동적인 특성을 갖는 미래인터넷의 관리에 필수적인 기술로 떠오르고 있는 자율 네트워킹의 개념과 연구동향 및 이슈에 대해 살펴본다.

• 한국지구과학회:학술대회논문집
• /
• 2004.02a
• /
• pp.33-33
• /
• 2004

• 정보화사회
• /
• s.78
• /
• pp.42-48
• /
• 1994

최근 네트워크 환경이 멀티미디어 네트워크로 변화되면서 다양한 형태의 네트워크 관련 기술이 출현하고 있다. 이에 설계 방식부터 변화되는 새로운 개념의 차세대 네트워크 기술동향을 LAN스위칭, 가상LAN, ATM 등을 중심으로 살펴본다.

• Proceedings of the Korean Institute of Landscape Architecture Conference
• /
• 2021.10a
• /
• pp.34-36
• /
• 2021

• Journal of The Korean Association For Science Education
• /
• v.21 no.4
• /
• pp.648-657
• /
• 2001

Using the concepts on the need of existence of living things, we investigate students' concepts on interdependence concepts between living things. The purposes of this study are to identify components of conceptual ecologies influencing on students' concepts and to describe the relations between those components and their concepts. The subjects of this study are 4 boys, 2 girls in the 3rd grade of middle school. The sources of data used in this study include a questionnaire, interviews and observation of the discussion class. Then, all data collected through each methods are compared and summarized in the relation to the questions of research. As a conclusion, it reveals that students' concepts are connected with several cognitive or affective components. Especially, the major components influencing on students' concepts are their metaphysical beliefs, conceptions includes other fields. These components function as constraints. Given these results, a teacher who want to teach a new concept to students should consider their characteristics and the components of conceptual ecology.

• Journal of The Korean Association For Science Education
• /
• v.24 no.3
• /
• pp.499-518
• /
• 2004

This study focused on research that illustrates the important interplay between learners' epistemological beliefs about science knowledge, physics textbook knowledge and knowing physics in the classroom. Also this study investigated learners' conceptual changes on the value of mechanical energy. To explore these topics, six sophomores were chosen as participants. Three categories were introduced to classify how participants' understanding of the nature of science knowledge, physics textbook knowledge has been linked with epistemological beliefs of knowing physics. The three categories were (1)receiving physics knowledge as authority, (2)receiving physics knowledge as the perception of teacher's role and (3)understanding physics knowledge as the perception that science knowledge is a product of a variety of human ideas. These categories were also concerned with construction of individual conceptions of mechanical energy. The participants who understood physics knowledge as the perception that science knowledge is a product of a variety of human ideas naturally used metacognitive strategy in classroom compared to other participants. And they had scientific conceptions about the value of mechanical energy. Others who were passive in classroom had unscientific conceptions about the value of mechanical energy due to definition of energy and epistemological beliefs about the nature of science knowledge. In the process of their conceptual changes on the value of mechanical energy, it was important to understand an instrumental aspect of scientific knowledge and to think about the relation between formulae and physical phenomena.