• The Journal of the Korea Contents Association
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• v.22 no.8
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• pp.329-338
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• 2022

As the non-face-to-face economic situation developed due to the COVID-19 pandemic, untact stock groups appeared in the stock market. This study proposed the Korea COVID-19 fear index following the spread of infectious diseases in the COVID-19 pandemic situation and analyzed the influence on the untact stock and contact stock returns. The results of the empirical analysis are as follows. First, as a result of the Granger causality analysis using the Korea COVID-19 fear index, significant causality was found in the return of contact stocks such as Korean Air, Hana Tour, CJ CGV, and Paradise. Second, as a result of stock price prediction based on the LSTM model, Kakao, Korean Air, and Naver's prediction performance was high. Third, the investment performances of the Alexander filter entry rule using the predicted stock price were high in Naver futures and Kakao futures. This study can find a difference from previous studies in that it analyzed the influence of the spread of the COVID-19 pandemic on untact and contact stocks in the COVID-19 situation where the non-face-to-face economy is in full swing.

• Journal of the Korea Convergence Society
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• v.12 no.12
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• pp.281-286
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• 2021

This study is a basic study on COVID-19 and human quality of life. The purpose of the study is to reveal what changes are made in people's lives after a disaster and to provide basic data for crisis intervention research to effectively improve life satisfaction after a disaster to all subjects living in this era. As a result of the study, changes in life before and after COVID-19 differed depending on the subject. COVID-19 is certainly a major disaster for our society. In order to wisely cope with such a disaster situation, it can be said that a crisis intervention program is urgently needed. It can be said that a program is required to immediately focus on the crisis situation according to the target and evaluate the current difficulties to understand the client's response to the situation and relieve their feelings such as anger and anxiety.

• Journal of the Korean Society of Earth Science Education
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• v.13 no.3
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• pp.317-329
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• 2020

The purpose of this study is to investigate how elementary science specialized teachers operate and how they have a perception of the science class in the COVID-19 situation. The number of participants in the study is 21 who are dedicated to science subjects in 2020. 21 teachers were given an open survey of science classes and future directions in the COVID-19 situation, and 8 out of 21 teachers were interviewed in-depth on how and why they did so. As a result of the study, first, the science classes before and after COVID-19 of primary science teachers were different. Under the COVID-19 situation, teachers identified the characteristics of online and offline classes and operated them in a way that was specific to their characteristics. Second, there was a common perception of teachers' classes on the basis of this science class operation style, which is that science classes should be operated as activities, that I would like to have classes that suit my taste as long as the policy allows, and that online classes cause students to lose motivation and widen their educational gap.

• Genomics & Informatics
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• v.20 no.2
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• pp.22.1-22.9
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• 2022

The rise of newer coronavirus disease 2019 (COVID-19) variants has brought a challenge to ending the spread of COVID-19. The variants have a different fatality, morbidity, and transmission rates and affect vaccine efficacy differently. Therefore, the impact of each new variant on the spread of COVID-19 is of interest to governments and scientists. Here, we proposed mathematical SEIQRDVP and SEIQRDV3P models to predict the impact of the Omicron variant on the spread of the COVID-19 situation in South Korea. SEIQEDVP considers one vaccine level at a time while SEIQRDV3P considers three vaccination levels (only one dose received, full doses received, and full doses + booster shots received) simultaneously. The omicron variant's effect was contemplated as a weighted sum of the delta and omicron variants' transmission rate and tuned using a hyperparameter k. Our models' performances were compared with common models like SEIR, SEIQR, and SEIQRDVUP using the root mean square error (RMSE). SEIQRDV3P performed better than the SEIQRDVP model. Without consideration of the variant effect, we don't see a rapid rise in COVID-19 cases and high RMSE values. But, with consideration of the omicron variant, we predicted a continuous rapid rise in COVID-19 cases until maybe herd immunity is developed in the population. Also, the RMSE value for the SEIQRDV3P model decreased by 27.4%. Therefore, modeling the impact of any new risen variant is crucial in determining the trajectory of the spread of COVID-19 and determining policies to be implemented.

• Korean journal of aerospace and environmental medicine
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• v.31 no.3
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• pp.68-72
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• 2021

As the number of passengers using aircraft increases around the world, there may be more medical measures needed within the aircraft. These medical measures may also include measures against serious situations such as cardiopulmonary resuscitation (CPR). However, since the environment is different from the hospital in the aircraft, it may be difficult to cope with such a situation. Moreover, such in-flight CPR may become more difficult at a time when the proportion of out-ofhospital CPR is decreasing due to the recent COVID-19 pandemic. In this paper, I would like to summarize how in-flight CPR is performed and review the main discussions on CPR in the COVID-19 pandemic, and finally suggest how to perform a safe CPR in the COVID-19 situation.

• The Journal of Korean Society for School & Community Health Education
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• v.23 no.4
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• pp.1-15
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• 2022

Objectives: The purpose of this study was to examine the mediating effect of Stress coping method in the relationship between Covid-19 stress and academic burnout of university students in the long-lasting Covid-19 situation. Methods: The subjects of this study were 323 college students and data were collected by on-line questionnaire survey. The collected data was analyzed using SPSS 23.0 and t-test, ANOVA, multiple linear regression analysis were conducted. Also mediation analysis was performed according to the Baron & Kenny method. Results: The results were as follows. First, students with high Covid-19 stress had high academic burnout by regression analysis. Second, in the stress coping method, the active coping method lowered academic burnout, and the passive coping method increased academic burnout. Third, the active coping method showed a partial mediating effect in the relationship between Covid-19 stress and the academic burnout(p<.01). Conclusions: In order to help college students cope with academic burnout caused by Covid-19 stress, it is recommended to guide students to use active coping method through counseling and education. Ultimately, it is necessary to support students to use various coping methods according to their situation appropriately.

• Journal of the Korean Society for Library and Information Science
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• v.55 no.3
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• pp.303-319
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• 2021

This study sought to find out the status of medical libraries in Korea that provide information services related to the Covid-19 situation, and how the librarian's perception of the Covid-19 situation, the main body of the library's information provision, affects the provision of related information services. For this purpose, we checked the website for Covid-19 information service. In order to understand the degree of awareness of Covid-19, Grunig's Situational Theory was applied to classify four types of librarians according to the degree of problem recognition, constraint recognition, and involvement recognition, and to analyze how the three perceptions affect Covid-19 related information services. As a result, only 25 out of 144 korean medical libraries provided information services related to Covid-19. The librarian, the main agent of the library's information provision, found that the problem recognition and involvement recognition in the Covid-19 situation were high, constraint recognition were low, and the level of information service was very active. And only constraint recognition has been shown to have a significant impact on providing Covid-19 related information services. Further research when future sources are available and follow-up research on how librarians' perceptions affect library operations are also proposed.

• International Journal of Computer Science & Network Security
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• v.23 no.10
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• pp.179-187
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• 2023

The outbreak of COVID-19 had affected almost every part of the world and caused disastrous results, the number of reported COVID-19 cases in past few months have reached to more than 29 million patients in the world globally. This pandemic has adversely affected all the activities of life, ranging from personal life to overall economic development. Due to the current situation, routinely turned to online resources, and people have relied on technology more than they have been before. Since cybercriminals are an opportunist and they utilized this entirely, by targeting the online services for all sectors of life. This fortnight online dependency of the community over the internet opened several easy doors for the cybercriminals. This causes exponential attacks over internet traffic during this epidemic situation. The current Covid-19 pandemic situation appeared at once, and no one was ready to prevail this. However, there is an urgent need to address the current problem in all means. . KSA is among one of the countries most affected by these CA and is a key victim for most cyber-crimes. Therefore, this paper will review the effects of COVID-19 on the cyber-world of KSA in various sectors. We will also shed light on the Saudi efforts to confront these attacks during COVID -19. As a contribution, we have provided a comprehensive framework for mitigating cybersecurity challenges.

• Journal of the Korea Convergence Society
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• v.13 no.1
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• pp.489-498
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• 2022

This study was conducted to identify factors that affect the job satisfaction of nurses at local hub hospital in the COVID-19 situation. Data were collected from 230 nurses working at 4 local hub hospital in C-do through a questionnaire. Using SPSS/WIN statistics 25.0, the data was analyzed by t-test, ANOVA, Pearson Correlation, and Multiple Linear Regression. Factors that were significant to the job satisfaction of nurses at local hub hospital were self-efficacy(t=3.003, p=.003), G local hub hospital(t=2.739, p=.007), and job burden(t=-4.291, p<.001) which showed 44.1% of the explanation. In conclusion, in order to increase job satisfaction of nurses at local hub hospitals in the COVID-19 situation, it is necessary to develop a convergence program that improves self-efficacy, and policy support is needed to lower the job burden.

• Journal of Digital Convergence
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• v.20 no.3
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• pp.265-273
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• 2022

The purpose of this study is to take a look the situation of social enterprises under CIVID-19 Pandemic and to suggest future directions. The COVID-19 pandemic which started at the end of 2019, has influenced the various areas of our society, such as health, economic, social and networking. The virus is spread through human respiratory, and it is working as a disability factor in human focused social economy. Under the COVID-19 pandemic situation, Social entrepreneurs are being constrained in financial aspects. In the process of continuing pandemic, the size of the social economy has been expanded and cleaning & health businesses are showing economic performance. This is to tell the fact that social economy is solving COVID-19 issues based on a reciprocity and solidarity. To create a sustainable ecosystem for the social economy, we should select and promote universal and concrete future directions at the economic and social safety net building level rather than to respond to COVID-19.