http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
비선형 마찰 계수를 고려한 브레이크 디스크의 열-구조 연성 해석
한명재(Myeong Jae Han),이철형(Chulhyung Lee),박태원(Tae Won Park) 대한기계학회 2017 대한기계학회 춘추학술대회 Vol.2017 No.11
A finite element analysis model for evaluating the dynamic characteristics of brake discs under high speed braking conditions is presented. The analysis model is modeled by a coupld thermo-mechanical analysis technique which can take into consideration the elastic contact problem due to sliding friction and the heat generation and heat transfer. In order to evaluate the performance of the correct dynamic characteristics, the nonlinear friction coefficient according to the temperature were calculated from the brake specifications and the torque variation history obtained from the actual brake dynamometer experiment. As a result of the analysis, the disc temperature and BTV were confirmed. Also, the analysis model was verified by comparing with the brake dynamometer experimental results.
식물과 동물의 물질 수송을 연계한 STEAM 프로그램 개발 및 적용 효과
한명재(Han, Myeong Jae),홍승호(Hong, Seung-Ho) 이화여자대학교 교육과학연구소 2015 교육과학연구 Vol.46 No.1
For a society to be competitive in the future, it will need to harness its members’ creative ideas and the power of science and technology. In this society, a person needs to have both knowledge of science and technology and imagination and artistic sensibility. With this requirement in mind, STEAM education integrates science, mathematics, technology, engineering, and art into a single curriculum. Through this study, researchers developed a STEAM program that made connections between the vascular bundle system of plants and the circulatory system of animals in 5th grade science. The purposes were to find the impact on the academic achievement, creative problem solving abilities, and scientific attitude of elementary school students. Participants were 28 fifth grade students who were divided into control and experimental groups. The control group had a traditional science class, while the experimental group had a STEAM program that integrated content of plants and animals. Results show that only the experimental group increased significantly in levels of academic achievement and creative problem solving abilities. In spite of the span of such a short-term program, level of scientific attitude was also significantly elevated in the experimental group, compared with the control group. Therefore, STEAM programs need to be developed over a longer period of time by reorganizing the curriculum and implementing such programs in school.
STEAM 프로그램을 적용한 과학수업이초등학생의 창의성과 과학교과 흥미도에 미치는 영향
김덕호 ( Deok Ho Kim ),고동국 ( Dong Gook Ko ),한명재 ( Myeong Jae Han ),홍승호 ( Seung Ho Hong ) 한국과학교육학회 2014 한국과학교육학회지 Vol.34 No.1
과학 기술 경쟁 시대라는 시대적 흐름에 따라 세계 주요 국가들이STEAM 교육에 주목하고 있다. 우리나라 과학교육의 목적이 과학적 소양을 지닌 창의적 인재 육성이라는 점에서 보면 STEAM 교육의 필요성은 부정할 수 없는 사실이다. 이에 본 연구에서는 초등학교6학년 과학 교과에서 활동과 흥미를 고려한 주제 중심의 STEAM통합교육 프로그램을 개발하여 초등학생의 창의성 및 과학교과 흥미도에 어떤 영향을 주는지 알아보고자 하였다. 본 연구에서 개발한STEAM 교육 프로그램은 6학년 각 단원별 마무리 활동에 단원 정리 및 심화. 보충활동으로 적용할 수 있도록 개발하였다. 주제별 활동중심의 프로그램으로 학생들의 과학 학습을 통해서 창의성 및 과학교과흥미 도를 높이는데 주안점을 두었다. 개발한 STEAM 프로그램을 J도내 3개 초등학교 학생들에게 사전. 사후에 투입한 결과, 실험 집단은 비교 집단에 비해 초등학생들의 창의성 및 과학 교과 흥미도가 유의미하게 향상되었다. 따라서 지속적이며 체계적인 STEAM 프로그램의 개발이 요구되며, 더 나아가서는 초등학교 전 학년에 걸쳐 적용할 수 있는 STEAM 프로그램을 개발하고 교육현장에서 적극적으로 활용하려는 노력이 이루어져야 할 것이다. According to trends in scientific technical competition, many countries around the world are interested in and focused on the STEAM integrated education. By observing the fact that the goal of our country`s science education is to cultivate creative workers who have scientific knowledge, the need for STEAM integrated education cannot be denied. Therefore, the purpose of this study was to develop the STEAM integrated program focused on themes that considered activities and interest in the grade 6 science subject in order to identify its influence on the creativity and interest levels of elementary students. The STEAM integrated education program in this study was developed so that it can be applied as a unit review or reinforcement activities in the closing activities per unit in grade 6. The focus was placed on heightening students` creativity and interest in science subject learning through a program focused on activities per theme. As a result of applying the developed STEAM integrated program in prior and post conditions on 3 elementary school`s students in J Province, it was discovered that significant improvement was found in the creativity and scientific interest of elementary students in the experimental group, compared to the control group. Therefore, continuous and systematic development of the STEAM integrated education program is required, and moreover, it must be developed for all elementary grade levels and efforts should be put into actively applying the program in the field of education.