• 공학교육연구
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• 제14권6호
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• pp.48-50
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• 2011

This paper deals with STEM(science, technology, engineering and mathematics) education program scheduled by ICEE (innovation center for engineering education) of Jeonju University and applied to the first-year students of high school in Jeonju. The outline of the program has been expressed, and the response of lecturers and students have been discussed. Students have experienced the various engineering topics with experiments, and had the chance to trigger to think over their majors in the future university.

• 공학교육연구
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• 제20권4호
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• pp.51-60
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• 2017

The purpose of this research is to analyze the educational experiences of competent engineering students and finding the reason why they invest their time and efforts engaging in school activities. Five students with high GPA, high K-CESA scores and successful employment or entrance test scores, participated in the survey and the interview. In checking their responses, their activities' records were gathered from school DB. According to the modified framework based on the personal investment theory, the interviews, survey and DB records were analyzed on the sense of self, the social cultural environment, and pattern of behaviors in schools. The competent engineering students are able to manage themselves, in maintaining a good relationship with the collegiate, and in having high self-efficiency. They also tend to put effort into their studies and participate in inbound and outbound school activities. At the last part, freshmen foundation, relationship within college, students' activity related future career, economic stability during studies are suggested for supporting students in universities.

• 대한치과기공학회지
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• 제33권4호
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• pp.495-503
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• 2011

Purpose: The purpose of this study was to obtain data that can be utilized in the planning of oral health education plan, by surveying the correlation between oral health knowledge, attitude, and behavior among high grade students elementary school in some regions of the metropolitan. Methods: The subject of this study through the survey of the recognition of the oral health, a questionnaire survey was conducted for 548 male and female students who were in the 4th, 5th, 6th grade of elementary school in some regions of the metropolitan. Statistical analysis was conducted using the SPSS 12.0 with t-test, ANOVA, and correlation. Results: Knowledge of oral health was very high. Correct attitudes and positive behavior were indicated. There was a significant difference in oral health knowledge according to school year and parents' dental condition(P<.05). The student one recording oral health behavior degree where the oral health knowledge is high appears highly, considers statistically the difference which it was visible. Positive correlation was significantly observed among oral health knowledge, attitudes, and behavior. Especially, attitudes and toothbrush method were highly correlated(r=.853). Conclusion: Oral health program through the elementary school students and their parents for the development of proper oral health care education programs continue to be made should be considered.

• Journal of Mechanical Science and Technology
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• 제15권3호
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• pp.366-373
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• 2001

A numerical analysis of shock wave/boundary layer interaction in transonic/supersonic axial flow compressor cascade has been performed by using a characteristics upwind Navier-Stokes method with various turbulence models. Two equation turbulence models were applied to transonic/supersonic flows over a NACA 0012 airfoil. The results are superion to those from an algebraic turbulence model. High order TVD schemes predicted shock wave/boundary layer interactions reasonably well. However, the prediction of SWBLI depends more on turbulence models than high order schemes. In a supersonic axial flow cascade at M=1.59 and exit/inlet static pressure ratio of 2.21, k-$\omega$ and Shear Stress Transport (SST) models were numerically stables. However, the k-$\omega$ model predicted thicker shock waves in the flow passage. Losses due to shock/shock and shock/boundary layer interactions in transonic/supersonic compressor flowfields can be higher losses than viscous losses due to flow separation and viscous dissipation.

• 대한안전경영과학회지
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• 제9권3호
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• pp.55-61
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• 2007

In general, it is fact that most educational institutions have lots of problems about shift of education facility and equipment because of insufficient budget. However, most high school girls live a lot of period in the school and most of them wear student uniform. Thus, it is necessary that educational environment has to be improved by actual body size of high school girls. The main objective of this study is to provide numerical guideline for the improvement of educational environment about high school girls ($17\sim19$ years) through comparison and analysis on physical standard of nation (report published in 1997). The sample for this work chosen from data which were collected and measured by Size Korea during two years $(2003\sim2004)$. In order to analyze feature of the somatotype of high school girls, analysis was performed about 734 subjects on 25 body parts such as height (7 parts), width (4 parts), thickness (4 parts), circumference (5 parts), length (4 parts) and body weight. For the specific comparison on somatotype, $R\ddot{o}hrer$ index and Mollison's comparison graph were used. The result of this study can be utilized in various fields such as design of classroom, student uniforms, facilities and equipments for education, etc.

• 공학교육연구
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• 제18권5호
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• pp.42-50
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• 2015

In spite that spatial ability has been recognized as an important element of academic achievement in engineering studies, researches on the topic are rather limited in Korea. In this study, the relationship between spatial visualization skill and academic achievement of engineering students was investigated based on the several variables such as gender, high school education background and college course achievement. The result showed that there were significant relevance between spatial visualization skill and gender, high school type, achievement of high school level math & physics, and college course work grade of computer graphic and capstone design. According the case study, from the entry time of engineering college, support programs to reinforce spatial visualization skill are required for lower skill groups such as female and graduate from art course in high school. Also, college curriculum such as Engineering graphics, Capstone design are substantial to improve spatial visualization skill. However, more diversified sample groups and research methods are required in order to draw in depth results.

• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2002년도 Proceedings of the International Welding/Joining Conference-Korea
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• pp.583-588
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• 2002

The purpose of the study is to evaluate fracture toughness on the Laser and the electron beam welded joints of high tensile steels (HT500, HT550, HT650) by using 3-point bend CTOD and Charpy impact test. WM (weld metal) CTOD tests have been carried out using two kinds of CTOD specimen, the Laser beam welding (108mm length, and 24mm width, and 12mm thickness) and the electron beam welding (l71mm length, and 38mm width, and 19mm thickness). WM Charpy impact specimen is a standard V-notch type, and the temperature of the experiment is changed from -45 to 20 degree of centigrade. FE-analysis is also performed in order to investigate the effect of stress-strain fields on fracture characteristics. Results of the standard V-notch Charpy test are influenced by strength mis-match effect and the absorbed energy vE depends on crack path, and The transition temperature of Laser beam welded joints is more higher than that of electron beam welded joints. Results of the 3-point bend test give low critical CTOD and the crack path is in the weld metal of al specimens. These results indicate fracture toughness characteristics of the welded joints and transition temperature of HT500 are similar both a Laser beam welded joint and an electron beam welded joint. But the fracture toughness and the transition temperature of the electron beam welded joints of HT550 and HT650 are higher than those o the Laser beam welded joints.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2012년도 추계학술대회
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• pp.941-944
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• 2012

마이크로프로세서가 산업현장에서 다양하게 활용됨에 따라 전문계 고교에서 마이크로프로세서의 교육은 매우 중요하지만, 그 복잡성과 난해성 때문에 실제 전문계 교육 현장에서의 마이크로프로세서 교육은 수월치 않다. 본 논문에서는 아두이노를 활용하여, 전문계 고교의 마이크프로세서 교육에 대한 수행 사례와 그 효과를 소개한다. 아두이노는 오픈소스 기반의 마이크로컴퓨터 플랫폼으로, AVR을 기반으로 한 보드와 소프트웨어 개발을 위한 통합 환경(IDE)를 제공한다. 아두이노는, 다수의 디지털 신호 입출력용 핀과 아날로그 전기 신호 입력용 핀을 통해 다양한 센서로부터 값을 받아들여, LED나 모터와 같은 액츄에이터들을 제어함으로써 환경과 상호작용이 가능한 장치를 만들어낼 수 있다. 또한 플래시, 프로세싱, Max/MSP와 같은 소프트웨어들과도 연동할 수 있다. 본 논문에서는 아두이노를 활용하여 마이크로프로세서의 주요 기능(입출력 포트 제어, 외부 인터럽트, 타이머/카운터 인터럽트, 아날로그 디지털 컨버젼, 시리얼 통신)에 대한 이해를 돕도록 실습 과제를 구성하였다. 이는 전문계 학생들에게 기존 완성형 교육용 키트를 활용한 수업에서 배울 수 없었던 전자부품 조합능력 및 창의적인 제품 제작 능력을 기르는데 도움을 줄 것이다.

• 공학교육연구
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• 제13권5호
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• pp.25-28
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• 2010

The objective of this project is to cultivate interest among junior high school students toward Science & Technology. Six simple experiments will be introduced to the participants (junior high school students) of this project which is focusing on the basic principles of engineering including law of motion, free-fall, force, energy, friction and work. Our student team has been assigned to design six set of experiment according to the principles. The experiments are easy to understand and simple to assemble by the students of age 13 to 15. Experimental manuals were written by the members using simple words complete with figure so that all the participants can understand the procedure of each experiment. In order to make sure the manuals are practically working, the experiment sets were tested and the results were compared with actual theory. As a result, we believe that the experiments can be done by the students within less supervision. The students are able to set up the experiments by using some simple equipment around them. By doing this experiments, we can further our understanding and explain better the principles of energy, force and work.

• 한국실천공학교육학회논문지
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• 제2권1호
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• pp.47-51
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• 2010

최근 공학교육의 발전을 촉진하고 실력을 갖춘 공학기술 인력을 배출하기 위해 공학교육인증에 대한 관심이 높아지고 있다. 이 공학교육인증에서는 학생들에게 포트폴리오 작성을 요구하고 있으며, 포트폴리오는 대학의 전 과정을 통해 달성한 학생 자신의 교육적 성과로서 학생 개개인의 교육 관련 활동과 실적물이 포함되어 있다. 특히, 설계교과목에 대한 포트폴리오에는 졸업 시까지 학생이 만든 설계 결과물이 축적되며, 결과물은 학생의 설계능력에 대한 달성도를 평가할 뿐 아니라 취업 또는 진학 시 중요한 자료로 활용될 수 있다. 본 논문에서는 실습교과목, 공학설계, 졸업설계에 대한 포트폴리오의 양식에 대해 설명하고, 이를 이용한 활용법에 대해 소개한다.