• Communications of Mathematical Education
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• v.34 no.3
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• pp.201-214
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• 2020

In December 2019, new coronavirus (COVID-19) which was started from Wuhan caused a dramatic changes in college mathematics education around the world from the spring semester 2020. All classes in college was switched to online classes at once. As a result, many efforts were made to keep the quality of mathematics education in college. We have discussed the situation that we did experience and discussed a possible changes that future mathematics education and research can face in the post-corona era (after coronavirus, AC era). Finally, we discussed an evaluation method for student activities that can be used in online class evaluation.

• Proceedings of the Korean Society of Computer Information Conference
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• 2021.07a
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• pp.565-566
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• 2021

최근 펜데믹으로 인하여 대부분의 교육 시스템은 비대면 수업을 통해 수업이 이루어지고 있다. 하지만 비대면 강좌는 대면 강좌와는 다르게 강의자가 수강자의 수업 상태를 파악하는데 제한이 있으며 강좌 수강 태도에 대하여 수강자를 평가하기가 어렵다. 본 논문에서는 비대면 강좌에서 사용할 수 있는 방법 중에서 실시간 화상 강의 수강자의 참여도 추정 시스템을 제안한다. 이 시스템은 기존의 화상 시스템에서 사용하는 장비를 이용하여 수강자의 얼굴, 동공 및 사용자 활동을 실시간으로 측정하여 이를 강의자에게 여러 카테고리 형태로 수업 참여도 측정값을 제공한다. 이를 통해 강의자가 수업 시 수강자들의 수업 참여 여부와 수업 평가 및 향후 수업 개선점을 확인할 수 있도록 한다.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.29 no.4
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• pp.21-27
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• 2021

The paper, in an online learning environment which becomes prolonged for reason of COVID-19, on 80 students belonging to the aviation and aeronautics, proposed more concrete direction for raising effectiveness of online class by analyses of various standpoints regarding the relation between 8 detailed elements of self-initiated learning ability and learning satisfaction. As a result of analyses, first, it turned out that, among detailed elements of self -initiated learning ability, relatively high scores were showed in basic self management ability, grasp of resources for learning, attribution of efforts to results, and selection of learning strategies. Second, in correlation between self-initiated learning ability detailed elements and learning satisfaction and technical statistical analyses, the score of the two elements: learning goal setting and continuance of learning execution is low, so that it is necessary to note the two elements. Third, as to self-initiated learning ability, the average of female students is high and in learning satisfaction, the average of male students was high. Fourth, it was found that the first-class students showed significantly high learning satisfaction compared with the second-class students. Fourth it turned out that, regarding a difference, both of self-initiated learning ability and learning satisfaction were dismissed and thus there is no difference. Fifth, as to the effects of self-initiated learning ability on learning satisfaction, both of a corelation analysis and a regression analysis showed significant results. Accordingly, self-initiated learning ability in online class has a very significant effect on learning satisfaction.

• The Journal of the Korea Contents Association
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• v.21 no.4
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• pp.292-302
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• 2021

The purpose of this study was to use Google Classroom for Cooking Practice Subject. We would like to present a practice class operation method suitable for the current educational environment and conditions. If the Untact Class in the Practice Subject is conducted in the future, we want to cultivate the core competencies and practical skills of the major. In addition, Q Methodology, which can be extracted by type, was applied by analyzing subjective opinions or perception structures for the cooking major students who are currently experiencing the curriculum. The survey period was conducted from March 23 to April 30, 2020 for first-year Cooking Major students taking the Cooking Practice Subject. Type 1 (N=11): Development of cooking training kit, Type 2 (N=7): Special lectures from industry experts, Type 3 (N=7): Development of practice form self-directed learning, respectively. Based on this study, it is expected to contribute to the Q Methodology on the development of the curriculum for the operation of the cooking practice subject, the effectiveness of education, and the application of learning methods.

• Journal of Digital Convergence
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• v.19 no.10
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• pp.63-73
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• 2021

Sudden implementation of online classes in higher education due to Covid19 pandemic implies a lot of worries about academic performance declining. Thus, this paper analyzed a class(CalculusI) taught 100% online which was the same as the offline class before. This class tried to maintain the same quality as the offline one by utilizing various teaching strategies. The result shows the academic achievement level was similar or higher than that of offline class, and so was the students' perception and satisfaction degree. However, this was not just the outcome of online class, but it came from the professor's well-designed teaching plan and smooth operation of the class. It implicates successful teaching methodology is more important factor than such medium difference as online or offline. This study suggests the potential of online classes after the Covid19 pandemic, and expects further studies verify the result in a lot more curricula.

• International Journal of Internet, Broadcasting and Communication
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• v.13 no.4
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• pp.129-134
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• 2021

Since the first semester of 2020, domestic and overseas universities mostly provided untact online classes and limitedly provided face-to-face classes due to COVID-19 in operating courses. The convergence subjects provided in undergraduate courses attach importance to contents-centered, design-based, hands-on education, and field experience. In the situation where online education was not revitalized, instructors in charge of convergence subjects had difficulty in developing online class materials, and students' satisfaction with the classes was not high. Especially, a problem was raised that students taking the convergence subjects that included practice had difficulty in communicating with the instructors. We would investigate the present condition of distance learning in domestic universities, which came suddenly due to the global pandemic of infectious disease and make suggestions for effective distance learning in the coming era of Metaverse by emphasizing the interaction and communication between instructors and learners through an analysis of distance learning of a convergence subject.

• Journal of Industrial Convergence
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• v.20 no.11
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• pp.41-47
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• 2022

This study explored the academic emotions of university freshmen depending on the type of online class(pre-recorded lecture vs. real time online class) that they took during the COVID-19 lockdown. 170 freshmen participated in the survey based on the 'Academic Emotion Questionnaire(AEQ)', and the statistical results are as follows; Firstly, research showed that the participants felt higher positive emotions for pre-recorded lecture than for real time online class, and higher negative emotions for real time online class than for pre-recorded lecture(p < .01). Secondly, participants felt different emotions depending on English level(p < .01). Thirdly, participants felt different emotions depending on their majors(p < .01). Students majoring in science & engineering felt higher positive emotions than those in humanities & social studies in pre-recorded lecture class. Fourthly, participants felt different emotions depending on gender(p < .01). Female students felt higher negative emotions than male students. Finally, the pedagogical implications and suggestions were discussed.

• Korean Journal of Childcare and Education
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• v.19 no.2
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• pp.119-141
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• 2023

Objective: This study aimed to investigate Pre-service early childhood teachers' perceptions and roles regarding young children's free play time. Methods: The study utilized the photovoice method and involved 21 pre-service early childhood teachers who expressed interest in participating. Participants were enrolled in an infants teaching methodology class in B city. The study involved four virtual meetings conducted via untact teams, and the automatic recordings of these meetings were transcribed for analysis. Results: The results revealed that pre-service early childhood teachers recognized young children's free play time as a period to enjoy full freedom, develop as the main agent of their lives, and express their imagination. Furthermore, pre-service early childhood teachers perceived their roles during young children's free play time as a specialist infant observer, a connector between play and learning, and a versatile supporter. Conclusion/Implications: The findings suggest the need for a systematic curriculum to provide pre-service early childhood teachers with a balanced perspective and awareness of the meaning of free play and teacher roles. The study highlights the importance of expanding pre-practice courses for observation of play and field-oriented curriculum for incumbent teachers.

• Proceedings of the Korean Institute of Building Construction Conference
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• 2021.05a
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• pp.189-190
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• 2021

Recently, the spread of intense social distancing and untact culture due to COVID-19 has increased the time spent indoors. In addition, according to the International Cancer Institute, fine dust was classified as a first-class carcinogen, a substance found to be carcinogenic, such as asbestos and benzene. As a result, interest in indoor air quality is increasing, and many studies are underway to reduce air pollutants. This study is a basic experiment of a board made to improve indoor air quality. The basic characteristics of the board, flexural strength and compressive strength, are analyzed and the results of the test are as follows. Experiments have shown that flexural strength and compressive strength tend to decrease as the replacement rate of hydrocarbons increases. It is believed that the strength of the sludge has decreased due to the increase in internal voids due to the increase in non-surface area, volume and diameter of microfiber as it undergoes the carbonation process. In addition, it is believed that the amount of moisture needed for curing during the mixing process was reduced due to the absorption of hydrocarbons.

• Journal of the Korea Society of Computer and Information
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• v.25 no.10
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• pp.269-277
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• 2020

In this paper, we propose an efficient dynamic workload balancing strategy which improves the performance of high-performance computing system. The key idea of this dynamic workload balancing strategy is to minimize execution time of each job and to maximize the system throughput by effectively using system resource such as CPU, memory. Also, this strategy dynamically allocates job by considering demanded memory size of executing job and workload status of each node. If an overload node occurs due to allocated job, the proposed scheme migrates job, executing in overload nodes, to another free nodes and reduces the waiting time and execution time of job by balancing workload of each node. Through simulation, we show that the proposed dynamic workload balancing strategy based on CPU, memory improves the performance of high-performance computing system compared to previous strategies.