• 공학교육연구
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• 제20권6호
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• pp.68-75
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• 2017

This study has a purpose to analyse changes in perception and image about engineering and technology of students who participated in the engineering camp. To achieve this objective, the questions were as follows. 1) What about participants' image difference for engineering before and after participating the engineering camp 2) What about participants' image difference for technology before and after participating the engineering camp. For this study, the program was progressed from Aug in 2017 and the data was collected from 88 students, middle school seniors and high school freshmen. The results of this study were as follows: First, secondary students perceived 'valuable(6.74)', 'meaningful(6.73)', 'rich(6.40)', 'collaborative(6.42)', 'nice(6.22)' as high image rank of the positive response for engineering. On the other hand, 'complex(3.59)', 'labored(3.80)', 'hard(4.66)', 'dangerous(4.48)', 'cold(4.86)' were perceived as low image rank of the negative response for engineering. We can realize that they generally has the image that engineering is valuable, meaningful and nice but also labored, complex and hard. The students who participated in the engineering camp showed the greatest difference in 'complex - simple' and 'dangerous - safe' engineering categories before and after the camp, followed by 'cold - hot', 'labored - easy', and 'hard - soft', respectively. Second, secondary students perceived 'meaningful(6.58)', 'valuable(6.55)', 'wide(6.38)', 'nice(6.37)', 'strong(6.25)' as high image rank of the positive response for technology. On the other hand, 'complex(3.85)', 'labored(3.93)', 'hard(4.62)', 'dangerous(4.72)', 'cold(5.05)' were perceived as low image rank of the negative response for technology. The students who participated in the engineering camp had the big change in 'hard - soft' technology category before and after the camp, followed by 'complex - simple', 'labored - easy', 'theoretical - practical' and 'dangerous - safe', respectively. We can see that the negative images for technology which were complex, labored, dangerous, theoretical was improved with positive image such as simple, easy, safe and practical, after conducting the engineering camp. In conclusion, both image recognitions for engineering and technology have improved after the camp. It means that interesting and entertaining engineering-technology program can boost interests in engineering and technology which felt difficult, so that images about them can be turned out positive. Also, it is possible to reduce avoidance of natural science and engineering subjects, as part of the purpose of training creative talents in science and engineering, so it can be said that the engineering camp is highly meaningful because it can lead students into the field of science and engineering.

• International journal of advanced smart convergence
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• 제8권2호
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• pp.170-182
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• 2019

In this paper, we use scratch to design and develop non-formal learning experiences that are linked with contents of secondary science textbook to educational programs. The goal of this paper is to develop a convenient and interesting program for non-formal learning in a learning environment using various smart device. Theoretical approaches to mobile education, such as smartphones, and smart education support policies continue to lead to various research efforts. Although most of the smart education systems developed for students who have difficulty in academic performance are utilized, they are limited to general students. To solve the problem, the learning environment was implanted by combining the scratch, which is an educational programming that can be easily written. The science education program proposed in this paper shows the result of process of programming using ICT device using scratch programming. In the evaluation stage, we were able to display the creations and evaluate each other, so that we could refine them more by sharing the completed ideas.

• Bulletin of the Korean Chemical Society
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• 제35권12호
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• pp.3495-3501
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• 2014

A novel crystal, the mono-protonated metformin acetate (1), was obtained and characterized by elemental analysis, IR spectroscopy and X-ray crystallography. It was found that one of the imino group in the metformin cation was protonated along with the proton transfer from the secondary amino group to the other imino group. Its crystal structure was then compared with the previously reported diprotonated metformin oxalate (2). The difference between them is that the mono-protonated metformin cations can be linked by hydrogen bonding to form dimers while the diprotonated metformin cations cannot. Both of them are stabilized by intermolecular hydrogen bonds to assemble a 3-D supermolecular structure. The four potential tautomer of the mono-protonated metformin cation (tautomers 1a, 1b, 1c and 1d) were optimized and their single point energies were calculated by Density Functional Theory (DFT) B3LYP method based on the Polarized Continuum Model (PCM) in water, which shows that the most likely existed tautomer in human cells is the same in the crystal structure. Based on the optimized structure, their Wiberg bond orders, Natural Population Analysis (NPA) atomic charges, molecular electrostatic potential (MEP) maps were calculated to analyze their electronic structures, which were then compared with the corresponding values of the diprotonated metformin cation (cation 2) and the neutral metformin (compound 3). Finally, the possible tautomeric mechanism of the mono-protonated metformin cation was discussed based on the observed phenomena.

• 한국지구과학회지
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• 제36권5호
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• pp.484-499
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• 2015

This study explores the impact of a STEM integration teacher professional development program focusing on teachers' perception of engineering and their attitudes toward integrating engineering into teaching. A total of sixty-eight teachers from ten schools participated in the program for five days. Data are collected from three main sources including (1) pre and post concept maps probing teachers' perceptions about the engineering discipline, (2) a pre and post survey measuring teachers' self-efficacy of teaching science/mathematics within the engineering context, and (3) engineering integrated science and (or) mathematics lesson plans and teaching reflections. This study utilizes both qualitative and quantitative research methods depending on the data we have collected. The results show that both science and math teachers thought that integrating engineering into teaching provided valuable outcomes, i.e., promoting students' learning about engineering and improving their interest in science or math through real-world problem solving exercises. Participants also felt more comfortable about integrating engineering in their teaching after the program. The results also imply that the teachers' understandings of engineering become more concrete after the program. This study also provides an overview of the challenges and advantages of teaching engineering in K-12 science and mathematics classrooms.

• 한국정보통신학회:학술대회논문집
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• 한국해양정보통신학회 2006년도 춘계종합학술대회
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• pp.817-820
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• 2006

빠르게 변화하고 있는 정보화사회에서 IT교육은 중요한 요소임에 자명하고 IT분야에서 일할 인재들은 교육하기 위한 대학기관의 역할이 커지고 있다. 그러나 정보 컴퓨터 과목이 중등학교에서 아직 정규과목이 아니고 교사임용의 문도 점점 좁아지고 있는 지금 사범대학에서의 교사양성은 적극적이고 능동적으로 대처해야 한다. 이를 위해 IT강국이 되기 위한 우리나라의 컴퓨터교육을 위해 사범대학의 교육과정과 컴퓨터교사 양성을 위한 임용고사를 분석해보고 그 연계성을 분석하여 앞으로 더 개선되어야 할 점들을 제안해 보고자 한다.

• 실천공학교육논문지
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• 제14권2호
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• pp.447-457
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• 2022

본 연구는 장애학생에게 실시된 원격수업에 대한 장애학생 학부모의 인식을 파악하고, 교육지원에 대한 요구를 탐색하고자 하였다. 이를 위하여 학령기 장애 자녀가 있는 전국의 학부모 총 2,392명을 대상으로 설문조사를 실시하였다. 설문조사 문항은 크게 교육격차 방지를 위한 학습지원, 행동 및 심리적 어려움을 위한 지원, 교육복지 보장을 위한 돌봄지원의 영역에 관한 문항들로 구성되었다. 설문조사를 통해 취합된 자료는 기술통계를 통해 분석되었으며, 중복응답을 한 문항의 경우에는 다중응답 빈도분석을 통해 분석되었다. 연구결과 원격수업 시 장애학생의 교육격차 방지를 위해 지원해야 할 학습지원의 중요도로 학교 내 대면교육이 가장 높게 나타났으며, 특수교육지원센터와 연계한 학습지원과 관련해서는 장애특성에 맞는 원격학습 방법 및 전략에 대한 상담이 가장 높게 나타났다. 장애학생 원격수업을 위한 학습지원의 방안으로 예비특수교사를 통한 개별학습 지원에 대한 요구가 높게 나타났으며, 학습보조기기 및 보조공학기기 관련해서는 필요할 때 적절하게 이용할 수 있는 충분한 기기의 확보를 요구하였다. 이 밖에도 장애학생이 행동 및 심리적 어려움을 위한 심리상담 및 교육지원이 요구되었으며, 장애특성에 적합한 돌봄 프로그램 개발 및 전담 인력 추가 배치 등에 대한 요구가 나타났다. 이러한 연구결과를 토대로 본 연구에서는 장애학생이 원격수업으로 인한 겪게 되는 학습격차 해소를 위한 방안 및 구체적인 교육지원 방안에 관하여 시사점을 제시하였다.

• Journal of Radiation Protection and Research
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• 제44권3호
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• pp.90-96
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• 2019

The contributions of nuclear science and technology in enhancing prosperity and quality of life all over the world and its potential to achieve many important Sustainable Developments Goals (SDGs) of the United Nations are well recognized. It also is now recognized that with fewer students getting attracted to Science, Technology, Engineering and Mathematics (STEM) in general and nuclear science and technology (NST) in particular; hence, there is a vital need to reach out to young students to provide the crucial human resources needed for these endeavours to continue in this highly specialized area. The success of a recently completed IAEA project related to introducing NST during 2012-2016 in secondary schools in the Asia-Pacific region countries encouraged the formulation of a new IAEA TC project RAS0079 entitled "Educating Secondary Students and Science Teachers on Nuclear Science and Technology" for 2018-2021, focusing on enhancing existing educational approaches through training and development opportunities both for teachers and students. The project aims at reaching a million students during the project duration while keeping the depth of learning between teacher and student. The strategy of executing the project, implementation status and its impact so far is presented in this paper.

• 한국생산제조학회지
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• 제25권5호
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• pp.393-399
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• 2016

In this study, an experiment was conducted using a 3D scanner, commonly used in reverse engineering techniques, and the newly introduced CT measuring machine. The hole, width, and angle of specimens having various shapes were designated, the error rates in dimensional modelling generated during scanning with each device were compared, and the models were printed using a 3D printer. A secondary comparative analysis of the two printed specimens was conducted; the causes of dimension errors that occur during the printing process after scanning with each device and the differences associated with variation in shape were also analyzed. Based on the analysis results, the featured shape for each scanning application method and issues to consider in reverse engineering were presented, and the use of the CT measuring machine was recommended as a method to minimize error rates in dimensions and ensure efficient reverse engineering.

• 실천공학교육논문지
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• 제7권2호
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• pp.107-112
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• 2015

본 논문에서는 중학교 기술 가정 교과에서 재료가공 단원의 학습 성취도를 수업 방법에 따라 어떤 차이가 있는지를 연구하였다. 대상 집단은 중학교 2학년과 3학년을 비교하였으며 2, 3 학년 모두 재료가공 단원을 처음 배우는 학생 집단을 선정하였다. 2학년은 교육 매체를 활용하는 방법으로 강의하였으며, 3학년은 전통적인 판서 강의를 하는 방법을 선택하여 학습 성취도를 비교하였다. 6개의 문항에서 정답률을 비교한 결과 교육매체 활용을 한 수업에서는 71.1%의 평균 정답률을 나타내었으나 판서 강의를 한 집단에서의 평균 정답률은 45.3%로 나타났다. 두 집단의 평균 정답률 차이는 25.8% 포인트로 교육매체를 활용한 수업이 학업성취도를 향상시키는데 효과적임을 알 수 있었다.

• Geomechanics and Engineering
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• 제34권1호
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• pp.69-86
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• 2023

To overcome the dilemma of the [BQ] method's inability to predict mountain tunnel support loads, this study is based on the Hoek-Brown criterion and previous results to obtain the connection equations from GSI scores to each parameter of the Hoek-Brown criterion and the link between the [BQ] scores and the GSI system. The equations were embedded in the Hoek-Brown criterion of FLAC6.0 software to obtain tunnel construction forecasts without destroying the in-situ stratigraphy. The feasibility of the secondary development of the Hoek-Brown criterion was verified through comparative analysis with field engineering measurements. If GSI > 45 with a confining pressure of less than 10 MPa, GSI has little effect on the critical softening factor while we should pay attention to the parameter of confining pressure when GSI < 45. The design values for each parameter are closer to the FLAC3D simulation results and the secondary development of the Hoek-Brown criterion meets the design objectives. If the Class V surrounding rock is thinned with shotcrete or the secondary lining is installed earlier, the secondary lining may act as the main load-bearing structure. The study may provide ideas for rapid prediction of mountainous tunnels in China.