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실천공학 교수법 : Maple을 활용한 미분방정식 학습
하준홍 ( Jun Hong Ha ),심재동 ( Jea Dong Shim ) 한국실천공학교육학회 2009 실천공학교육논문지 Vol.1 No.1
In the study of differential equation the most obstacle is that you have to spend lots of times and the plots of solutions are not easy by hand. If we do not solve these kinds of problem, it is difficult to achieve the goal of the object which is the understanding and the practical use of the differential equation. In this paper we explain what should be Maple`s usefulness in the method of removing these obstacles, and introduce the stepwise executing codes of Maple which is developed for student`s easy application.
실천공학 교육 방법론 : STEM교육을 기반으로 한 미분방정식의 교육
하준홍 ( Jun Hong Ha ) 한국실천공학교육학회 2015 실천공학교육논문지 Vol.7 No.1
STEM Education in the US and Korean STEAM are reviewed. The present STEM education focuses on K-12 and it does not concern STEM education in university. In this paper, we define a STEM education that can be made available in university and we establish a way of teaching and learning differential equations based on the STEM education. The class provides students with a chance to explore the capstone design projects that are developed by seniors and do hands-on activities. We introduce and set a Mobius strip with an instant delivery pathway to solve real problems as a symbol of STEM education.
실천공학 교수법 : 함수의 그래프를 이용한 형상의 윤곽 그리기
하준홍 ( Jun Hong Ha ) 한국실천공학교육학회 2010 실천공학교육논문지 Vol.2 No.2
The functions and their graphs are very important parts in mathematical educations. But there seems be a lot of students studying the functions and their graphs without grasping the meaning of them and without interest with them. We present a learning method of how to match functions and their graphs with outlines of various shapes. That is, outlines of the shapes are assumed to be the graphs of the functions and the graphs will be plotted on the screen of a computer with help of the computer algebra system.
실천공학교육 관련 : Pseudo-STEM에 기초한 미분방정식 교육
하준홍 ( Jun Hong Ha ),심재동 ( Jae Dong Shim ) 한국실천공학교육학회 2013 실천공학교육논문지 Vol.5 No.2
In this paper we investigate the history of the education based on STEM which is one of the topics of teaching method of Mathematics and Science oriented to the student, Hand-on education be applying partly to college education and the case of the education of the subject “Mathematics and Science for Engineering” of Japan`s college. The educational method based on STEM make the student to recognize by themselves the necessity of the mathematics in the study of the technological and engineering problem, and furthermore draw a conclusion which is the proper method to change from passive to positive the study attitude for the mathematics. But it is more or less unreasonable to apply directly to college education with not physical fusion but chemical fusion of S (science), T (technology), E (engineering) and M (mathematics). Therefore we make themselves to find T and E considered at graduation works. We propose Pseudo-STEM teaching method linking this recognition obtained through self-activity to the mathematics subject.
하준홍(Ha, Jun-Hong),손수덕(Shon, Su-Deok),이승재(Lee, Seung-Jae) 대한건축학회 2016 大韓建築學會論文集 : 構造系 Vol.32 No.7
In this study, the dynamic unstable phenomenon and critical load variation of the spatial truss under the beating-wave load were researched. For this purpose, a non-linear governing equation of a shallow spatial truss was derived. In addition, a dynamic analysis and a characteristic analysis of the buckling phenomenon were conducted using the numerical method. The analysis model was selected considering the number of free nodes and the rise-span ratio, and the response to the periodic parameter that determines the period of the beating function was analyzed. To compare the results, a analysis for the step load and sinusoidal—wave load were also conducted. Resonance was observed in the analysis results for both the sinusoidal-wave load and the beating-wave load. The patterns of critical load level were similar in the area lower than the natural frequency, but they were different in the area above it. Furthermore, the critical level of the beating-wave load changed more sensitively than the sinusoidal-wave load did and was much lower than the step load.
오창헌 ( Chang Heon Oh ),하준홍 ( Jun Hong Ha ),김남호 ( Namho Kim ),조재수 ( Jae Soo Ch ),엄기용 ( Kiyong Om ) 한국실천공학교육학회 2012 실천공학교육논문지 Vol.4 No.2
IPP (Industry Professional Practice) is an educational model that combines academic study and industrial work through university-industry cooperation. Students would decide suitable career based on their IPP experience that will lead a university graduate to improve their recruitment potential. IPP could also be a key to solve national employment problems as well as a chronic manpower supply and demand mismatch issue between university and industry. This paper discusses about an academic program operation for the IPP implementation that includes operation plan for semester-based quarter system a guideline for new curriculum an academic credit allocation evaluation guideline a capstone design class operation and interim measures.
시분할구간 호모토피 섭동법을 이용한 공간 트러스의 비선형 동적 해석
손수덕(Shon, Su-Deok),하준홍(Ha, Jun-Hong),이승재(Lee, Seung-Jae) 한국소음진동공학회 2012 한국소음진동공학회 논문집 Vol.22 No.9
This study aims to apply multistage homotopy perturbation method(MHPM) to space truss composed of discrete members to obtain a semi-analytical solution. For the purpose of this research, a nonlinear governing equation of the structures is formulated in consideration of geometrical nonlinearity, and homotopy equation is derived. The result of carrying out dynamic analysis on a simple model is compared to a numerical method of 4th order Runge-Kutta method(RK4), and the dynamic response by MHPM concurs with the numerical result. Besides, the displacement response and attractor in the phase space is able to delineate dynamic snapping properties under step excitations and the responses of damped system are reflected well the reduction effect of the displacement.
장기현장실습 제도의 성공적인 운영을 위한 아시안 대학의 코업 프로그램 사례분석
조재수 ( Jae Soo Cho ),하준홍 ( Jun Hong Ha ),엄기용 ( Kiyoung Om ),오창헌 ( Chang Heon Oh ),김남호 ( Namho Kim ) 한국실천공학교육학회 2013 실천공학교육논문지 Vol.5 No.1
This paper presents several case studies of asian colleges`s co-op program for successful operation of KOREATECH IPP (Industry Professional Practice) program. The IPP program is a new educational model that combines academic study and industrial work through university-industry cooperation. The IPP experience will lead the university graduates to improve their employment competencies and will be a key to solve the problems of the labor mismatch between university and industry. We will discuss and analyze the strengths and the weaknesses of the Co-op programs of the Kyoto sangyo university, the Hong Kong polytechnic university and the suranaree university in thailand. Based on these case studies, we summarized several benchmarking points for the successful operation of IPP program.