• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.484-486
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• 2022

This study compares these two platforms with Gedertown and Zepeto, which have the largest number of users among metaverse that have grown rapidly due to various factors such as COVID-19 pandemic. It focuses on the differences between avatars, usage fees, class rooms, and communication methods. Accordingly, the difference between 2D and 3D of the metaverse platform and the difference in camera use can be seen.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.581-583
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• 2021

Due to the pendemic of Corona 19, the use of mobile services is increasing. However, since anomalies in most mobile devices are recognized by the device's alarm, it is difficult to intuitively determine the problem of the device when a complex failure occurs. To compensate for this, in this study, the Anomaly Score was created by RRCF algorithm to intuitively recognize the problem by combining the alarm and performance information of the equipment, and the effect of detecting 97% of the past failure history was verified.

• Journal of the Korea Society of Computer and Information
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• v.26 no.12
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• pp.213-220
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• 2021

As the coronavirus disease(COVID-19) pandemic is declared and the number of confirmed cases and deaths increases in countries around the world, the world is gripped with fear. Therefore, in this study, psychological factors of infection prevention behaviors of firefighters and maritime police officers were analyzed based on the Health Belief Model. Although there was no significant difference in the COVID-19 prevention behaviors between the two groups, there was a significant positive correlation between the perceived disease infection possibility, perceived severity, and perceived benefits in the general characteristics and the COVID-19 prevention behaviors. There was no significant difference with perceived obstacles. This study is of great significance in that it is the first analysis of firefighters and maritime police officers as a health belief model, and can be used as basic data for the implementation of new infectious disease prevention actions.

• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.611-612
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• 2022

메타버스는 게임 기술을 활용하여 현실의 다양한 현상이나 경제 활동들을 가상의 세계로 구현하고 이를 실세계와 유사하게 동작하도록 다양한 서비스를 제공하는 플랫폼을 일컫는 말로서 최근의 코로나19 펜데믹 상황과 맞물려 주목 받고 있는 게임 확장 기술군의 하나라 할 수 있다. 본 논문에서는 지역 관광 활성화를 위해 지역 대표 관광지의 시그니처(signature) 구조물들과 공간을 메타버스 플랫폼 상에 구현하고 구현된 공간에서 사용자간의 커뮤니케이션을 통해 관광 수요를 촉진시키며, 오프라인 이벤트와의 유기적인 연동을 통해 궁극적인 관광 활성화에 기여하기 위한 온오프라인 연계 메타버스 콘텐츠를 구현한다. 구현된 메타버스 콘텐츠에서는 개인별로 설정된 캐릭터를 활용해 구현된 가상 공간에서 상호작용이 가능하도록 구성하여 가상 공간에서 체득된 정보를 온라인 상에서 자유롭게 교환할 수 있도록 하였다. 본 논문에서 구현된 관광 메타버스 콘텐츠는 샌드박스형 메타버스 플랫홈으로 개발된 디토랜드를 기반으로 한다.

• The Journal of the Korea Contents Association
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• v.22 no.9
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• pp.29-45
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• 2022

This study aims to analyze how the public perceive the climate change in South Korea. The climate change has been highlighted due to its social and environmental impact on future society during decades. In recent, the outbreak of COVID-19 alerted the causal relationship between diseases and the climate change and forced decision-makers to cope with possible future epidemics. Along with the social and political importance of the climate change, the perception and actions of the public also become significant. Thus, this study analyzes the trends in the public perception of climate change before and after the COVID-19, using social media big data from March 1, 2019 through February 28, 2022. The results show that the negative perception dominated the public's perception, but a little positive perception implies that numerous policies on the climate change may help the public convert their negative perception to the positive. This study may help the decision-makers develop future policies and strategies on the climate change and carbon neutrality by considering the demand-side perception, such as South Korean perception.

• Journal of the Korean Society for information Management
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• v.39 no.4
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• pp.307-345
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• 2022

Due to the prolonged COVID-19 pandemic, metaverse has begun to receive attention as a means of providing future services. The importance of metaverse was further emphasized and metaverse platforms are being used by various institutions. Against this background, cases of using the metaverse platform in libraries are increasing. Therefore, the purpose of this study is to investigate domestic and foreign library cases using the metaverse platform and analyze each platform's characteristics and content types according to the metaverse platform's method. Based on the findings, the implication of the current study suggests the future direction of using the metaverse platform in the library.

• The Journal of the Convergence on Culture Technology
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• v.9 no.3
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• pp.311-320
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• 2023

This paper analyzes viewers' perception of investigative journalism before and after COVID-19, and examines the direction of investigative journalism using big data. Based on the previous research set as a social science model, the relationship between words related to big data TV current affairs programs and investigative journalism in this paper was investigated before and after the appearance of COVID-19. We visualized changes in viewers' perception of investigative journalism by analyzing text data obtained through the use of Textom, with TV current affairs programs and investigative journalism as keywords. Data was collected from 2017 to June 2022 and refined for analysis. We visualized connectivity centrality using Ucinet 6.0 and Netdraw, and clustered the number of keywords and their frequency using Concor analysis. Our study found a clear change in viewer perception before and after the pandemic. As an implication of this thesis, big data analysis was conducted with the investigative journalism as the main keyword, and the direction of the investigative journalism was presented based on the analysis. Furthermore, based on previous research, we suggest effective approaches for investigative journalism after the pandemic to better engage viewers.

• Journal of the Society of Disaster Information
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• v.17 no.4
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• pp.722-732
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• 2021

Purpose: Due to the coronavirus infection-19 (COVID) pendemics, all educational institutions were required to provide full non-face-to-face real-time education, and fire officials were required to provide fire-fighting education by applying non-face-to-face education. In this difficult situation, the National Fire Service Academy tries to find the direction of the non-face-to-face real-time education and suggest ways to improve it through a survey of the status of non-face-to-face real-time education conducted by the NFSA to fire officials. Method: A survey was conducted on fire officials under the theme of "Consciousness Survey for Improving the Quality and Specialization of Non-face-to-face Real-Time Remote Education" and an in-depth analysis was conducted based on the results. Result & Conclusion: First, professors or educational operators shall actively utilize remote education programs suitable for educational characteristics by utilizing various programs. Second, a dedicated notebook for non-face-to-face training should be provided to provide an educational environment where all learners can participate in the training without difficulty. Third, in the case of education and training that requires the use of equipment due to the nature of fire officials' education and training, it is necessary to consider it as a non-face-to-face training place by arranging educational equipment at each fire station. Fourth, it is hard to expect a satisfactory educational effect to cope with practical education with theoretical education. Therefore, facilities and programs that enable non-face-to-face real-time hands-on training should be developed. It is worth considering the proper combination of face-to-face education while maintaining the social distance as much as possible until such non-face-to-face training is possible. Fifth, non-face-to-face education is considered to have high eye fatigue due to the light and electromagnetic waves of the computer screen, and as time goes by, the concentration level decreases. Therefore, it is necessary to form an education time to reduce the eye fatigue of learners and increase concentration through proper class and rest time. Finally, professors should operate a learner participation-oriented education that allows professors and learners to interact rather than one-sided knowledge transfer education. In addition, technical problems of non-face-to-face remote education should be thoroughly prepared through preliminary system checks to ensure that education is not disrupted.

• The Korean Journal of Applied Statistics
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• v.35 no.6
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• pp.755-764
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• 2022

This paper is concerned with power transformations in estimating GARCH volatility. To handle a semi-parametric case for which the exact likelihood is not known, quasi-likelihood (QL) rather than maximum-likelihood method is investigated to best estimate GARCH via maximizing the information criteria. A power transformation is introduced in the innovation generating QL estimating functions and then optimum power is selected by maximizing the profile information. A combination of two different power transformations is also studied in order to increase the parameter estimation efficiency. Nine domestic stock prices data are analyzed to order to illustrate the main idea of the paper. The data span includes Covid-19 pandemic period in which financial time series are really volatile.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2022.10a
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• pp.493-495
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• 2022

This video is based on the newly emerged next-generation Media 360 VR. With the development of technology, digital content has developed and the opening of the COVID-19 pandemic untact era, people have found content that they can enjoy without going directly. 360 VR is a next-generation media that allows users to enjoy content in a three-dimensional manner as if they went to the site without having to go to the site. Using this, we would like to study the effective creation of local promotional videos.