• Journal of Magnetics
• /
• v.14 no.2
• /
• pp.66-70
• /
• 2009

The dynamic magneto-mechanical behaviors in a type of iron-nickel-based ferromagnetic alloy with constant elasticity were investigated as a function of both the DC bias magnetic field ($H_{dc}$) and the frequency. The rectangular plate-like samples were excited to vibrate at a half-wavelength, longitudinal resonance by an AC magnetic field superimposed with various $H_{dc}$. The experimental results found that the strain coefficient at resonance reached 819.34 nm/A and the effective mechanical quality factor ($Q_m$) was greater than 2000. The ratio of the maximum variation of the Young's modulus over $H_{dc}$ to the value of the Young's modulus at a zero bias field was only ${\sim}0.83%o$ because of the so-called constant elasticity. The resonant strain coefficients and $Q_m$ are strongly dependent on $H_{dc}$, which indicates a promising potential for use in DC and quasistatic magnetic field sensing.

• Journal of Engineering Education Research
• /
• v.22 no.4
• /
• pp.22-31
• /
• 2019

This study aims to elucidate the relationship between physics and mathematics to predict achievement for the college level of engineering courses. For the last 4 years, more than 3,000 engineering college freshmen of this study took the diagnostic tests on three subjects, which were physics, mathematics, and chemistry before enrollment. We studied how strongly these diagnostic scores can predict each general college course grades. The correlation between the physics diagnostic scores and the course grades in physics was .264, which was significantly lower than the correlation between the mathematics scores and the physics grades, .311. This stronger prediction of the mathematical diagnostic scores for the general course grades was not found when predicting the grades in chemistry. We therefore conclude that mathematical preparation can unexpectedly predict future achievement in physics better than physics preparation due to the academic interrelationships between mathematics and physics.

• Journal of Engineering Education Research
• /
• v.17 no.3
• /
• pp.3-7
• /
• 2014

This study was conducted to compare global mindset competency between engineering and non-engineering college students. Participants were 100 engineering and 202 non-engineering college students. Results indicated that engineering college students showed significantly lower mean scores on foreign understanding and self-directed adaptability than non-engineering college students, whereas there were no significant differences on self-ratings of foreign language ability. Hierarchical regression analyses revealed that the incremental validity of global mindset competency factors on global competency was significant. Finally, limitations of the present study and suggestions for further studies were discussed.

• Journal of Engineering Education Research
• /
• v.15 no.6
• /
• pp.34-42
• /
• 2012

Problem solving by homework assignment is a process of practicing what were discussed in classrooms and thus is considered as an essential part of learning procedure in engineering education. We introduced the concept of cooperative learning, Student Teams-Achievement Division(STAD), to improve the students' learning efficiency by in-class problem solving. The instructor explained fundamental concepts, and lecture materials were handed out to compensate for the time of in-class team activity. Brief tests were given after every chapter, and team-based additional credits were given for the improvement comparing the average of previous tests of each student. This attempt of modified STAD was evaluated to have brought about a significant improvement in students' academic achievement, in addition to activating classroom atmosphere.

• Geomechanics and Engineering
• /
• v.17 no.4
• /
• pp.385-392
• /
• 2019

The present fractional-order plasticity models for granular soil are mainly established under the triaxial compression condition, due to its difficult in analytically solving the fractional differentiation of the third stress invariant, e.g., Lode's angle. To solve this problem, a three dimensional fractional-order elastoplastic model based on the transformed stress method, which does not rely on the analytical solution of the Lode's angle, is proposed. A nonassociated plastic flow rule is derived by conducting the fractional derivative of the yielding function with respect to the stress tensor in the transformed stress space. All the model parameters can be easily determined by using laboratory test. The performance of this 3D model is then verified by simulating multi series of true triaxial test results of rockfill.

• Journal of Engineering Education Research
• /
• v.13 no.6
• /
• pp.72-79
• /
• 2010

The purpose of this study was to explore good college instructional practice in the industrial teacher education in order to improve the quality of instruction. The study that what is the good instructional practice have been relatively more researched on elementary and middle school than colleges. Research methods used in this study were an individual interview and focus group interview. Research results and analyses were three directions in good instructional practice to be in teacher's college, engineering college and teacher's graduate school. Based on the result of the study, some recommendations for future researches were made as follows: First, good instructional practice in teacher's college were to be interested in students and be enthusiastic class and practical training. Second, good instructional practice in engineering colleges were class to be a faithful college program for teaching profession orientation and practical training. Third, good instructional practice in teacher's graduate school were class to allow for an academic standard and subjects of special study of each students.

• Journal of Practical Engineering Education
• /
• v.11 no.2
• /
• pp.259-268
• /
• 2019

The purpose of the study was to examine the vocational educational system of Egypt, focusing on the effectiveness of the three consecutive cycle-based curriculum and integrated technical education clusters (ITECs) in order to suggest some implications for innovating the current vocational education system of Korea. The vocational education system of Egypt is similar to that of Korea, in terms of general education to go to university and vocational education to go to labor market. However, the Egyptian system is different from the system of Korea in light of the three consecutive cycle-based curriculum that links secondary vocational education, vocational education of college level, and advanced technical and vocational education. In addition, the Egyptian system has adopted the "cluster" approach which integrates technical secondary school, intermediate technical college, and advanced technical college around one physical area so as to promote vocational education in collaboration with regional industries and to guarantee education quality. In the last part, some potential implications were suggested for upgrading the quality of vocational education of Korea based upon the benchmark results of the Egyptian vocational education system and career development of students.

• Journal of Engineering Education Research
• /
• v.25 no.4
• /
• pp.13-20
• /
• 2022

The purpose of this study is to objectively grasp the effect of the engineering education innovation support project among the national engineering-related financial support projects by dividing the groups according to the participation of support projects from 2018 to 2020 and dividing the university performance. As a result of the research the engineering education innovation support project has been consistently producing excellent results of field-based engineering education such as field-oriented industrial-educational collaboration capstone design, technology commercialization, and development and operation of corporate-linked education. It was found that the results showed that the dropout rate of college were lowered. In the future, it needs to be prepared as a place for new and free trials, innovations, and opportunities so that the engineering education innovation support projects can become the mother of other business groups.

• Journal of Engineering Education Research
• /
• v.14 no.2
• /
• pp.21-29
• /
• 2011

The purpose of this study is to develop the academic and career counseling program for students of engineering college who don't have aptitude in engineering. Therefore we began with analyzing the outcome of Holland career aptitude test from enrolled students of engineering college. The method of this study is first, we classified between students who have aptitude on engineering and who don't. Next, we compared grades of between them. Lastly, we studied the needs of the students who don't have aptitude in engineering. The final result and analysis of study were used for suggestion of develop academic and career counseling program for students of engineering college who don't have aptitude on engineering.

• Journal of Engineering Education Research
• /
• v.20 no.3
• /
• pp.58-76
• /
• 2017

This study was carried out with the aim of suggesting the directions and criteria for the evaluation of engineering college by the media. In order to accomplish the purpose of the research, we compare and analyze items and criteria of the evaluation of the engineering colleges by domestic and foreign major media companies and investigate and analyze opinions of the engineering community on the evaluation on engineering colleges and universities by media, and then suggest direction of improvements of the evaluation including evaluation items. As the methods of study, literature survey, field investigations, and interviews of experts were utilized. The results of this study are as follows. At first, the direction of evaluations should be focused on educational values of institutions, and then evaluation should consider the characteristics of each universities and engineering colleges. Expansion of participation of engineering communities in evaluation process is also necessary and to secure of reliable and public data is highly important. In addition, the weighting factor of educational performance area were proposed to raise and also the factors should be adjusted to reflect the characteristics of engineering colleges.