• Journal of Science Education
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• v.47 no.3
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• pp.251-262
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• 2023

In this study, we examine other factors that may contribute to the decline in students' academic performance and educational attainment. Many media reports, as well as previous studies, have suggested that virtual learning is the main reason for the decline in students' academic performance. However, the 2020 National Student Achievement Survey, which was conducted in conjunction with the COVID-19 Distance Learning Environment Student Survey, showed that students were highly satisfied with distance learning (70-80%), and the analysis of the National Assessment of Educational Achievement showed that students' academic performance had already been declining year by year since 2017, with a general downward curve. For further confirmation, we analyzed the performance of high school students on mock exams and found that their performance was not normally distributed, but rather a right-skewed U-shaped distribution with a shrinking number of medians and severe polarization. We found that this phenomenon is not simply because of the mode or quality of the virtual classroom, but to a variety of factors, including environmental influences such as care and management at home, changes in investment in private education, increased time spent on online devices while taking virtual classes at the bottom, and increased time spent watching online content, games, and videos that are not related to learning.

• Journal of Korean Library and Information Science Society
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• v.52 no.2
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• pp.357-377
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• 2021

This study aims to suggest the sustainable services for academic library in the New Normal Age, analyzing the online services during the COVID-19 pandemic. For this purpose, this study examined the operation condition of academic libraries' services during the COVID-19, analyzing the untact and online services of 63 libraries of universities which have more than 10,000 students. And this research classified the online services into three types, which are 'collection', 'facilities', 'programs' and examined the library homepage and development plans of academic libraries. This study also looked into the services of Korean public libraries and foreign libraries to suggest the sustainable services for academic library. As a result, this study suggests 'providing online materials for course reserves', 'expansion of research and study curation services to invigorate the use of library materials', 'introducing the smart library system and renovation of library facility and space services', 'planning of online programs through expansion of interaction with users'.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2022.11a
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• pp.180-182
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• 2022

최근 팬데믹의 영향으로 비대면 문화가 확산하였다. 온라인 수업의 경우 시간과 공간에 구애받지 않고, 본인이 원하는 강의를 선택함으로써 학습의 질을 향상할 수 있는 장점이 있다. 이에 비대면 문화가 퍼짐에 따라 교육 온라인 수업의 수요와 중요도가 증가하였다. 따라서, 기업이나 교육단체가 가지는 원격 강의 플랫폼 품질의 중요성이 크다. 온라인 학습 플랫폼 구축을 위해서는 미디어 플레이어가 필수적이다. 인터넷에서 보안의 중요성이 대두됨에 따라, 본 논문에서는 다양한 플랫폼에 적용할 수 있는 HLS 프로토콜 기반 미디어 웹 플레이어를 개발하고자 한다.

• Journal of Creative Information Culture
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• v.7 no.3
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• pp.117-128
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• 2021

The purpose of this study is to develop a test tool to find out the ability of middle and high school students to adapt to untact instruction. As a result of the extraction, a untact instructional adaptability test paper was created with 24 questions of 6 factors: tool use, responsibility, concentration, confidence, adaptability, and cooperation. The results of the analysis of the goodness of the test are as follows. First, the reliability coefficient of the internal consistency of the item was found to be .888 for the entire Chronbach's α, and the reliability range for each domain was .621 to .854, which was sufficiently reliable. Secondly, the results of Construct Validity by confirmatory factor analysis are in the good categories as absolute fit indices RMSEA=.0108 and SRMR=.0794 in the CFA model. It was confirmed that it properly included the characteristics you want to see.

• Journal of Korea Entertainment Industry Association
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• v.15 no.4
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• pp.267-277
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• 2021

Both teachers and learners should participate in non-face-to-face class due to COVID-19. The non-face-to-face class has brought about many problems, where they made adequate preparations for such abrupt situation. This study attempted to understand and improve problems occurring during non-face-to-face midi class. The findings are as follows: First, there were differences in equipment available to contact and non-face-to-face class. Such a problem could be improved by using Reaper, DAW which can be installed and freely utilized without any functional limits, regardless of the types of operating systems. Second, latency could not be reduced, when the screen share function of Zoom was used, since it was impossible to select audio interface's drivers in DAW. This problem was improved by again receiving audio output as input and sending it, from the perspectives of teachers. In addition, learners who used the operating system of Windows and have no audio interfaces usually suffer from latency during practices. The latency can be reduced by installing Asio4all. Third, image degradation and screen disconnection phenomena occurred due to the lack of resource. Two computers were connected by using a capture board and the screen disconnection phenomena could be improved by distributing resources and maintaining high-resolution. The system for allowing non-face-to-face midi class could be successfully established, as one more computer was connected by using Vienna Ensemble Pro and more plug-ins were used by securing additional resources. Consequently, the problems of non-face-to-face midi class could be understood and improved.

• Journal of Digital Convergence
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• v.20 no.2
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• pp.57-62
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• 2022

This study was conducted with the purpose of listening to the explanations of artworks in the non-face-to-face class and confirming the learner's feelings as a result of the class. The proposed system listens to the explanation of the artwork, inputs the learner's emotions with a dedicated key, and expresses the result in music. To this end, the direction of the non-face-to-face art appreciation class model using the emotion key was set, and based on this, a system for non-face-to-face art appreciation was constructed. The learner will use the 'smart device using the emotion key' proposed in this study to listen to the explanation of the artwork and to input the emotion for the question presented. Through the proposed system, learners can express their emotional state in online art classes, and instructors receive the results of class participation and use them in various ways for educational analysis.

• Journal of the Korean Applied Science and Technology
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• v.38 no.2
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• pp.389-398
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• 2021

The purpose of this study is aimed to analyze the changes in major commitment and satisfaction of the 1^st and 2^nd grades university students in health-related departments through the application of un-contact lecture during COVID-19 pandemic. Study subjects were a total of 181 students in the 1^st and 2^nd grades in health-related departments. They participated in the un-contact lectures for 15 weeks through COVID-19 pandemic and the lectures consisted of real-time online lectures and the lectures using video contents based on the guidelines of Ministry of Education. Assessment of major commitment was performed using the major commitment scale and the major satisfaction was performed using the major satisfaction scale. As the results, the statistically significant decrease of major commitment and satisfaction showed after the application of un-contact lectures. Based on these, the application of un-contact lectures acts the students to decrease major commitment and satisfaction. Therefore, in the application of un-contact lectures, appropriate consideration should be needed for the increase of major commitment and satisfaction of 1^st and 2^nd grades university students in health-related departments.

• The Journal of the Convergence on Culture Technology
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• v.9 no.3
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• pp.385-390
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• 2023

The purpose of this study is to identify the antecedents and consequences of perceived fairness of assessment in an online class, such as Google classroom. Based on an extensive literature review, a research model and research questions were designed. We found that the perceived interactivity of contents and social presence were found to be antecedents of perceived fairness of assessment. Further, perceived fairness of assessment was found to have a substantial influence on class satisfaction and achievement.

• 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.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.2
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• pp.57-66
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• 2021

The purpose of this study was to verify whether the Interactive Cinematherapy Course developed based on discussion is still effective for emotional intelligence and empathic ability, even in a college lecture environment where courses are given online due to COVID-19. The subjects were enrolled in the Interactive Cinematherapy Course and experienced either an online (N=139) or offline (N=212) course before and after COVID-19. To the offline course, students were given structural questions and conducted discussions, whereas the online course students were given feedback via e-mail to substitute discussion. The results were as follows. Compared to the offline courses, students in both online/offline courses commonly showed an increase in "Other's emotion appraisal", "Cognitive Empathy", "Perspective taking", "Fantasy", and "Emphatic Concern". The online course students showed an increase in the "Use of emotion", while offline course students showed an increase in "Self emotion appraisal". This shows that online and offline courses do not have a significant difference in effects. In qualitative research, the lecturer's communication ability and concern helped enhance the effectiveness of the Interactive Cinematherapy Course given online. This implies that communication between the lecturer and students and role of the lecturer are more important than the online environment.