• Journal of the Korea Institute of Information and Communication Engineering
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• v.10 no.5
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• pp.871-876
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• 2006

In this thesis, to accurately measure 3D face information using the spatial encoding patterns, the new algorithm to segment the pattern images from initial face pattern image is proposed. If the obtained images is non-homogeneous texture and ambiguous boundary pattern, the pattern segmentation is very difficult. Furthermore. the non-encoded areas by accumulated error are occurred. In this thesis, the FCM(fuzzy c-means) clustering method is proposed to enhance the robust encoding and segmentation rate under non-homogeneous texture and ambiguous boundary pattern. The initial parameters for experiment such as clustering class number, maximum repetition number, and error tolerance are set with 2, 100, 0.0001 respectively. The proposed pattern segmentation method increased 8-20% segmentation rate with conventional binary segmentation methods.

• The Journal of the Korea Contents Association
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• v.21 no.12
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• pp.175-181
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• 2021

The purpose of this study is to improve and develop the quality of non-face-to-face classes according to the types of presence by analyzing the effects of teaching presence and learning presence on the learning satisfaction of the non-face-to-face classes that have been suddenly conducted due to COVID-19. For this purpose, a survey on online classes of H University in Gwangju Metropolitan City was conducted to analyze learning satisfaction, teaching presence (learning design, direct promotion), and learning presence (cognitive presence, social presence). The results of the analysis showed that the learning contents of cognitive presence, which is a sub-factor of learning presence, were understood (=.589, p<.001), the direct promotion (=.420, p<.001), and the learning design (=.397, p<.01), which are the sub-factors of teaching presence, were influential in order.This means that the suddenly changed teaching method should have an attitude to improve the intimacy between the instructor and the fellow learners with positive emotional exchange or interaction. The instructor should try to overcome the limitations of time and space through blended learning that is both online and offline for high quality learning design, but the learning medium and learning method considering the physical fatigue of the learner should be developed.

• Journal of Service Research and Studies
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• v.10 no.3
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• pp.55-66
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• 2020

This study was attempted to demonstrate the service performance of non-face-to-face real-time video lecture service conducted in the coronavirus crisis in early 2020. Lecture service is divided into service production and service delivery from a service system perspective, and its role of lecture service system and the relationship between lecture service benefits and service satisfaction perceived by learners is demonstrated. In order to demonstrate this structural impact relationship, the result of analysis through a questionnaire survey on a total of 268 undergraduate students at G University, showed that the role and level of the non-face-to-face real-time video lecture service system affects the service convenience and service satisfaction. In the additional analysis, the learning orientation learners group perceived the service system level or role in the lecture service and the service benefit itself higher than the relationship orientation learners group. In the past, when a face-to-face class was conducted, learners group who attended a lot of extra curriculum activities perceived the benefits of coronavirus prevention lower than those of a group that did not. In this way, it is necessary to supplement the lecture service system by identifying the role expectation in the lecture service for the high relationship orientation group and the preferring extra curriculum activity group after detail research.

• Journal of Korean Academy of Nursing
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• v.52 no.3
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• pp.278-290
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• 2022

Purpose: This study aimed to identify the mediating effect of learning flow and the moderated mediation effect of digital literacy on the effect of the learning presence of non-face-to-face class experience in nursing students on academic achievement. Methods: Participants were 272 nursing students from six universities in two different cities. A self-report questionnaire was used to measure learning presence, learning flow, digital literacy, and academic achievement. Analysis was performed using SPSS 26.0 and SPSS PROCESS Macro (4.0). Results: The mediating effect of learning flow on the effect of learning presence on academic achievement was 0.42, and the moderated mediation index of digital literacy was 0.17. Learning flow showed a mediating effect on the relationship between learning presence and academic achievement. Digital literacy had a moderated mediation effect on the relationship between learning presence and academic achievement that was mediated by learning flow. Conclusion: The intensity of the mediating effect of nursing students' learning presence on academic achievement through learning flow increases as the level of digital literacy increases. These results suggest that educational programs considering the level of learning presence, learning flow, and digital literacy are required to promote the academic achievement of nursing college students.

• Journal of Engineering Education Research
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• v.24 no.5
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• pp.3-14
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• 2021

This study deals with the case of online-based project learning, which was designed for the purpose of university educational innovation and enhancing learners' competencies required by society, operated during the COVID-19 pandemic. The course was applied Python programming language, team-based project learning, and intensive course system, which is required by our society and companies in the era of the 4th industrial revolution. Also it was operated as a non-face-to-face online class, which would have been operated in an offline class if it had not been for Covid 19 pandemic, to explore the possibilities and educational effects of online learning. To do this, 32 university students participated in online-based project learning during 8 weeks, and then conducted a survey. The survey results were analyzed in terms of i) non-face-to-face online learning, ii) team-based project learning, and iii) application of the intensive course system. Results say that most of the learners were satisfied with the online learning, team-based project learning, and the intensive semester system applied in this course at a high level, and also they clearly presented the reasons. Thereby, it has been confirmed that the learners were already well aware of the pros and cons of each learning method. Based on these results, the implications were discussed.

• Journal of the Korean Society of Radiology
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• v.17 no.6
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• pp.965-975
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• 2023

Education in radiology involves a large portion of practical training, and it is difficult to conduct it through non-face-to-face online education. In this study, we utilized the Metaverse platform, which can replace hands-on education, to implement a practice room that is difficult to access through non-face-to-face classes into a virtual world, and then evaluated the satisfaction of learners after the practice class, the practicality of the Metaverse platform class, and the future orientation of the curriculum. I wanted to find out. Using the metaverse platforms ZEPETO (Build It) and ZEP (ZEP), the S University radiology department lab was implemented into a virtual world and used for students' classes. A total of 50 students were surveyed twice, divided into pre- and post-surveys, and all questions used a 5-point Likert scale. As a result of the study, satisfaction was low at 2.32 for education without using Metaverse virtual space, while education using virtual space was very high at 4.16. As a result of the analysis, the satisfaction level of the new education system and the practicality of the Metaverse platform classes are very high, and it is believed that it will be a more effective education platform when conducting additional education such as app explanations in the future.

• Journal of The Korean Association of Information Education
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• v.21 no.6
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• pp.665-673
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• 2017

This research was performed for learning motivation and learning satisfaction of flipped learning on software education in university class. In order to compare and get the result, this study used 2 groups of experimental group(flipped learning) and comparison group(traditional face to face learning). Consequently an experimental group got more strong learning motivation and learning satisfaction than traditional learning group on software education in non-major class of university. It showed at the same time in factors of learning motivation like concentration, importance of subject, self confidence. and on factors pf learning satisfaction like problem solving, reaction, understanding, interest and relation with lecturer, This study showed that flipped learning method is more effective than face to face traditional learning method for creative or problem solving subject like software education.

• Journal of the Korean Institute of Intelligent Systems
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• v.18 no.1
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• pp.133-138
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• 2008

In this paper, we propose a novel anchor shot detection system, named to MASD (Multi-phase Anchor Shot Detection), which is a core step of the preprocessing process for the news video analysis. The proposed system is composed of four modules and operates sequentially: 1) skin color detection module for reducing the candidate face regions; 2) face detection module for finding the key-frames with a facial data; 3) vector representation module for the key-frame images using a non-negative matrix factorization; 4) one class SVM module for determining the anchor shots using a support vector data description. Besides the qualitative analysis, our experiments validate that the proposed system shows not only the comparable accuracy to the recently developed methods, but also more faster detection rate than those of others.

• Proceedings of the Korean Society of Computer Information Conference
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• 2023.07a
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• pp.651-652
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• 2023

코로나 팬더믹으로 인해 시작된 비대면 수업의 도입은 대학교육시스템에 변화를 가져왔다. 대학은 비대면 수업 운영에 대한 경험 및 학습자 만족도를 기반으로 비대면 수업을 대학 학사 운영에 활용하는 방안을 모색하기 시작하였다. 본 논문은 비대면과 대면이 혼합된 하이브리드 수업 운영에서 학습자들이 다양한 특성의 과목에서 만족한 수업방식과 의견을 조사·분석함으로써 비대면과 대면 수업을 혼합 활용하는 효과적 방안을 모색하는데 필요한 학습자 의견 도출에 그 목적이 있다. 조사 결과, 학습자들은 전반적으로 하이브리드 수업에 만족하고 있고, 과목 특성에 따라 비대면과 대면 수업의 장점을 혼합한 수업에 대한 학습효과를 올바르게 인식하고 있음을 알 수 있고, 수업 맞춤형 하이브리드 수업 운영을 선호하는 것으로 나타났다. 향후 대학은 학습자의 만족도를 높일 수 있는 하이브리드 수업 운영을 위한 제도 등을 마련하여 효과적인 수업 운영 및 활성화를 지원할 필요가 있다고 사료된다.

• Journal of Convergence for Information Technology
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• v.11 no.5
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• pp.176-189
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• 2021

This study was aimed to grasp online learning quality satisfaction in Dental Hygiene students. A survey was conducted targeting finally 228 dental hygiene students at a university in Gangwon Province from February 3, 2021 to February 17. As a result of analysis, the online class satisfaction by good instruction component was lower overall than importance. The learning environment satisfaction was lower than its importance. A difference between importance and satisfaction with online learning by detailed good instruction component showed a relatively big difference in systematic class, online learning environment, ability to convey the class contents. The need for online learning content was high in teaching material and VOD. The class operation type satisfaction was high in a non-real time class. Accordingly, a continuous effort is conceivably necessary for improving quality given the teaching-design establishment of online learning.