• 공학교육연구
• /
• 제15권4호
• /
• pp.58-65
• /
• 2012

The purpose of this study was to analyze the effects of accreditation on curriculum in Korean engineering education. To analyze the curriculum, bulletins of three colleges accredited programs and three colleges non-accredited programs from 2002 to 2010 were compared. The conclusions of this study are as follows. First, the accreditation for engineering education has a considerable influence on curriculum by strengthening the concentration areas, setting general education directions to fit engineering needs, and reinforcing major and MSC(math, science and computer) subjects. Secondly, the accreditation for engineering education causes significant changes in the educational objectives and contents. Lastly, it has an indirect influence on the curricula of non-accredited programs, such as increasing the number of MSC credits and accepting engineering design courses. Thus, the process of curriculum improvement is revealed in more global standardized engineering curricula.

• 공학교육연구
• /
• 제18권5호
• /
• pp.51-58
• /
• 2015

This research was conducted to assess the effects of an engineering education accreditation program devised by the University of Seoul on higher education outcomes by comparing and analyzing the evaluation results of engineering accredited students (31) and those who are not accredited (47) with the OECD AHELO (Assessment of Higher Education Learning Outcomes) in 2013. The AHELO assessment tool consisted of 25 multiple-choice questions which evaluated generic skill-learning outcomes, also using contextual surveys to establish the students' backgrounds. The results were evaluated statistically. In the results from the multiple-choice exam for generic skill learning outcomes, accredited students scored 1.35 points higher than non-accredited students. Secondly, according to the contextual survey related to students' university education experience, such as lectures, seminars, group projects, and online tutoring, it was found that accredited students were provided more activities in seminars and group projects. Moreover, for class activities, more of these were provided to accredited students, especially in the areas of assortment-structuralization and teamwork-based activities. Thirdly, according to the contextual survey results related to participation in class, specifically regarding asking questions and participating in discussions, interacting with the professor, and opportunities for study time, there were no recognizable differences between accredited and non-accredited students, However, while accredited students at least had opportunities to gain experience in most areas, there were some areas for which education resources were not provided to non-accredited students. Therefore, for the University of Seoul, our results imply that accredited students may show better performance in the areas of academic accomplishment and in their educational environment as compared to non-accredited students. These results demonstrate that the engineering education accreditation program positively contributes to employment competitiveness while also improving the necessary global standards of higher education outcomes.

• 공학교육연구
• /
• 제14권4호
• /
• pp.11-19
• /
• 2011

본 연구의 목적은 공과대학생을 위한 교수학습 전략에 대한 시사점을 도출하기 위해 공과대학 신입생의 학습양식과 학습전략 수준을 검토하고, 학습양식에 따른 학습전략 활용 정도를 분석하였다. 서울에 소재한 K대학교와 H대학교의 1학년생 273명을 대상으로 분석한 결과, 감각형, 시각형, 숙고형, 순차형이 더 높은 비율을 차지하였다. 학습전략은 3.28점(SD=0.38)으로서 평균 수준이었으며, 상대적으로 초인지 영역의 수준이 가장 높고, 내적관리 영역 수준이 가장 낮은 것으로 나타났다. 한편, 학습양식에 따른 학습전략 수준의 차이를 분석한 결과, 정보처리 차원에서 학습전략의 유의한 차이가 나타났는데 적극적 학습자의 학습전략 수준이 높은 것으로 나타났다. 세부 전략에서는 인지 영역과 내적/외적관리 영역에서 학습양식별 유의한 차이를 보였다. 본 연구 결과에 기초하여 공과대학의 교수전략 및 학습전략에 대한 시사점을 도출하였다.

• Journal of Veterinary Science
• /
• 제22권5호
• /
• pp.59.1-59.13
• /
• 2021

Background: Antimicrobial peptides (AMPs) have been identified as promising compounds for consideration as novel antimicrobial agents. Objectives: This study analyzed the efficacy of cecropin B against Haemophilus parasuis isolates through scanning electron microscopy (SEM) and atomic force microscopy (AFM) experiments. Results: Cecropin B exhibited broad inhibition activity against 15 standard Haemophilus parasuis (HPS) strains and 5 of the clinical isolates had minimum inhibition concentrations (MICs) ranging from 2 to 16 ㎍/mL. Microelectrophoresis and hexadecane adsorption assays indicated that the more hydrophobic and the higher the isoelectric point (IEP) of the strain, the more sensitive it was to cecropin B. Through SEM, multiple blisters of various shapes and dents on the cell surface were observed. Protrusions and leakage were detected by AFM. Conclusions: Based on the results, cecropin B could inhibit HPS via a pore-forming mechanism by interacting with the cytoplasmic membrane of bacteria. Moreover, as cecropin B concentration increased, the bacteria membrane was more seriously damaged. Thus, cecropin B could be developed as an effective anti-HPS agent for use in clinical applications.

• 공학교육연구
• /
• 제21권2호
• /
• pp.7-16
• /
• 2018

The purpose of this study is to develop and implement engineering education program by drawing out the educational needs creative engineering design ability. The importance and current level of creative engineering ability were surveyed and analyzed by using 29 sub - factors of creative engineering design ability presented by Kim Dae young et al(2006). from 234 engineering students in 6 universities. As a result, students recognized that all items of creative engineering design ability were important, and their level was generally recognized. The educational needs for creative ability and creative problem solving ability was high and the educational needs for creative engineering design project was relatively low. Based on these results, it is necessary to develop an educational program to enhance creative engineering design ability by considering learner's perception and professional and industrial recognition.

• 공학교육연구
• /
• 제19권4호
• /
• pp.72-82
• /
• 2016

In Korea, engineering education based on industry demand is highly emphasized; the survey of industry demand or company satisfaction is frequently conducted. Although engineering schools have often attempted and implemented the reform of engineering education, it was found that company satisfaction with college education was always low. In this context, this study aimed to find the cause of the low satisfaction. To this end, the social background for the active survey of industry demand and company satisfaction, and its progress were investigated. The findings of this study showed that the survey of industry demand in Korea has limitations in improving the quality of college education or developing its future demand, contrary to its intention. This industry demand based approach has its historical and social root in the Korea-specific model of the catching-up style industry development and technology innovation. Therefore, it is difficult to establish appropriate academy-industry relations and discover future vision based on this model. This study presents a new way to understand and develop the future-oriented industrial and social demand, not just arguing for the uselessness of the survey of industry demand in engineering education.

• 공학교육연구
• /
• 제24권4호
• /
• pp.30-40
• /
• 2021

The purpose of this study is to verify the effectiveness the IoT program in online, and explore the applicability of the design course in consideration of design elements and realistic constraints for engineering education accreditation in online. For this study, IoT programs developed based on online classes were operated, and the effectiveness as a subject was verified through satisfaction surveys, competency test, and interview of participating students. In addition, by presenting design elements and realistic constraints in a online environment required to apply to engineering design courses, it is expected that they can be used as basic data in developing and operating actual design curriculum.

• Journal of Ginseng Research
• /
• 제44권2호
• /
• pp.222-228
• /
• 2020

Background: 20(S)-ginsenoside-Rg3 (C₄₂H₇₂O₁₃), a natural triterpenoid saponin, is extracted from red ginseng. The increasing use of 20(S)-ginsenoside Rg3 has raised product safety concerns. Methods: In acute toxicity, 20(S)-ginsenoside Rg3 was singly and orally administrated to Kunming mice and Sprague-Dawley (SD) rats at the maximum doses of 1600 mg/kg and 800 mg/kg, respectively. In the 26-week toxicity study, we used repeated oral administration of 20(S)-ginsenoside Rg3 in SD rats over 26 weeks at doses of 0, 20, 60, or 180 mg/kg. Moreover, a 4-week recovery period was scheduled to observe the persistence, delayed occurrence, and reversibility of toxic effects. Results: The result of acute toxicity shows that oral administration of 20(S)-ginsenoside Rg3 to mice and rats did not induce mortality or toxicity up to 1600 and 800 mg/kg, respectively. During a 26-week administration period and a 4-week withdrawal period (recovery period), there were no significant differences in clinical signs, body weight, food consumption, urinalysis parameters, biochemical and hematological values, or histopathological findings. Conclusion: The mean oral lethal dose (LD₅₀) of 20(S)-ginsenoside Rg3, in acute toxicity, is above 1600 mg/kg and 800 mg/kg in mice and rats, respectively. In a repeated-dose 26-week oral toxicity study, the no-observed-adverse-effect level for female and male SD rats was 180 mg/kg.

• 공학교육연구
• /
• 제19권1호
• /
• pp.54-60
• /
• 2016

This paper was built for an activation of a merged education and development of non-subject, new type creative merged education program having effectivities. This program is disciplined a kind of flipped learning and camp program of 2 nights and 3 days. Given a problem which big enough and open-ended problem, multidisciplinary team that composed with engineering and design major students works the capstone design project. For ordinary engineering design process, 'how can we make?' was important. But in this program 'what can we make?' is more serious question. Our program was pursuing an creative idea that can induce innovation. Teaching or interference of professors was minimized and then students solve the problem theirselves by long time and liberal brainstorming. Last products is not real goods and only a proposal for manufacturing. Finally, the results are presented using ppt and board. After not only professors but also students of other teams can ask a question, resolve and comment on that proposal. The benefits of this program are that inner members of university take a whole process from planning and working to last evaluation. Besides economic benefit, they can secure an infrastructure for development of creative merged education program by running for several times and so can improve the program continuously. For an aspect of students, they can respond to recently highlighted creative experiences that required for recruitment.

• 공학교육연구
• /
• 제15권4호
• /
• pp.35-40
• /
• 2012

This study presents an analysis of the current situation (management, approach, adjustment, transportation, and others) of teaching portfolio by examining the teaching portfolio managers (staffs, researchers, teaching assistants, etc.) of 6 universities in the southeast of Korea. The rationale for the study focus is that the existing teaching portfolio either suffers a problem in the transportation, approach, adjustment and/or management or is likely to raise a problem in the future. In order to solve this problem, this study builds a web-based e-teaching portfolio. According to the analysis results, the engineering education system was established in all 6 universities (Ed- note that '6 universities' has already been specified as the study sample). The teaching portfolio was partially digitalized in this system, despite some problems of converting analog data into digital data, which induced difficulties in constructing the overall e-teaching portfolio. Therefore, this study focused on constructing an e-teaching portfolio without developing any additional system by using the existing system positively, and also on determining the appropriate components among the existing teaching portfolio components. Accordingly, in order to convert the analog data into the digital data required for this study, we used a digital camera as the conversion device and converted the teaching portfolio components into those appropriate for the e-teaching portfolio. Finally, we constructed an existing system appropriate for the e-teaching portfolio by using these devices and components.