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This chapter focuses on how ‘governmobility, ' governing through (im)mobilities, is a factor in South Korea's efforts to manage the COVID-19 pandemic and contain its spread. The case of South Korea articulates the practices of governmobility and technological self-governance without recourse to the extreme measure of a lockdown to protect its citizens. The technological self-governance discussed here, unlike social and political governance, is not only constituted by an internalized regulation of im/mobilities but more specifically those mobilities enacted through communication technologies facilitating collective relations. This chapter argues that the technological self-governance that enables people to adjust to their new reality and continue with their daily lives is instrumental to maintaining governmobility. The discussion also demonstrates that, though communication technology supports the technological self-governance, compliance would have proved inadequate without the ingrained mentality to rally during national crises. The South Korea government, assured that its citizens would cooperate, adapted that same technology for surveillance to trace individuals conceivably exposed to the virus in their campaign to isolate only those people at risk. The chapter concludes by discussing place-remaking strategies including flexible places and smart city planning. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2022.
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Due to COVID-19, universities have shifted to offer online learning for their students from traditional face-to-face learning. Despite various efforts made by university administrators for their students' online learning during the COVID-19 pandemic, not much has been identified about how students perceived online learning and what factors affected their online learning engagement and outcomes. Examining students' motivation, self-efficacy, and anxiety as key factors for their online learning engagement and outcomes, this study conducted a self-administered online survey with college students in three countries: the U.S., South Korea, and Colombia. This study used SEM to test hypotheses and conducted a multi-group analysis to find differences among students. The findings indicated that students' self-efficacy and anxiety significantly impacted their online learning engagement, influencing online learning outcomes. Although students were highly engaged in online learning, their perceived online learning was not so effective and rigorous compared to face-to-face learning.
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Purpose: The no-contact and economic downturn caused by COVID-19 have further grown the used market. The second-hand trading industry has established itself as a popular consumption culture, leading to exponential growth in the size of the market. This study aims to identify the types of shopping motivation for used products targeting Korean consumers, and to examine the relationship between shopping motivations for second-hand transactions, consumption values, and re-use intentions. Research design, data and methodology: The first study was conducted on 63 used trading platform users and the second study was conducted on 441 used trading platform users to identify the types of consumers' motivation for shopping for used products. Results: As a result of the first study, the shopping motivation types of Korean used product consumers were classified into convenience motivation, economic motivation, hedonistic motivation, information Acquisition motivation, and free time utilization motivation. As a result of the second study, it was found that convenience motivation had the greatest influence on functional values and hedonic motivation had the greatest influence on emotional values, and that functional values had a great influence on platform reuse intentions. Conclusions: This study provides practical implications for the establishment of marketing strategies for used trading platforms and academic implications for research related to used trading © This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://Creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted noncommercial use, distribution, and reproduction in any medium, provided the original work is properly cited
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Purpose: To provide a dynamic view on accommodation choice behaviors during the pandemic, this study aims to examine the impact of recent trends on prospective travelers' preferences for hotels and Airbnb. Design/methodology/approach: The paper adopts a mixed methods approach that incorporates three independent studies (experimental analysis, online search pattern analysis and an econometric event study) to understand customer decision-making behaviors. Findings: The findings indicate that travelers prefer Airbnb entire flats/apartments to hotels when the pandemic is trending upward. This result externally validates travelers' preference toward Airbnb during periods of high risk. Interestingly, when the trends go downward, however, the same behavioral pattern was not identified. Research limitations/implications: This study provides important empirical insights into how the evolution of health crises influence customer decision-making for hotels and Airbnb. Future research needs to consider the role of socio-demographic factors in accommodation selection behaviors and examine how travelers react to cleanliness levels between Airbnb and hotels. Originality/value: As one of initial studies that empirically examine Airbnb customers' decision-making behaviors in the context of the COVID-19 pandemic's trends, this study provides a dynamic view on how the evolution of the pandemic influences accommodation choice behaviors. © 2023, Emerald Publishing Limited.
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The COVID-19 pandemic has caused considerable changes in our lives. It has influenced our society, education, economy, and environment as well as our lifestyle. We have got used to wearing face masks daily. Working or studying from home is not an unusual thing anymore. On the other hand, some that we used to regard as normal, such as travelling abroad, have become less normal in this era. These changes subsequently influenced the acoustic environment in our community. Countries have closed their borders, set travel restrictions, and ordered their residents to stay home. Due to the reduced number of travelling, recent studies have noticed changes in traffic noise exposure. In addition, people gather less (e.g. at pubs or social events) during the pandemic, which also has an impact on the acoustic environment in our community. This paper provides a review of the literature on the effects of the COVID-19 pandemic on community noise. Based on the review, this paper concludes with suggestions for future research directions to create a better acoustic environment in the post-COVID era. © 2022 Internoise 2022 - 51st International Congress and Exposition on Noise Control Engineering. All rights reserved.
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Background Against the problem of declining physical activity among youth after COVID-19, this study has developed a design-led intervention that promotes physical activity using a smartphone service for families with children in upper grades of elementary school. The objective of this research is to evaluate the effectiveness of design elements constituting the intervention program via testing the service against a family with children in upper grades of elementary school. Methods Through forming a multidisciplinary team between the Department of Design and the Department of Children and Families, the study developed a strategy to instigate a constructive behavioral change to help family members become more physically active at home. The strategy used information, empowerment, and motivation as a driver of stimuli. A 13-day home user test was conducted to examine its effectiveness and to identify its limitations for future enhancements. Results Through the home user test, it was achievable to confirm an increase in actual physical activity as well as beneficial improvements in the perception of regulating physiological activity into habits. It was observed that motivation was internalized through family-level behavior intervention, parental role modeling through feed-forward information, reinforcing the importance of physical activity in children and adolescents, and experiencing a sense of accomplishment and self-efficacy from achieving their daily goals. Conclusions Based on theoretical considerations for motivation and the maintenance of changed behavior, a service that combines various intervention elements, is presented in this paper. This resulted in an understanding of the theoretical background and anticipated impacts on the future development of such smartphone-based services for tackling social issues such as sedentary behavior. Through this study, both children and their parents would be better equipped to make positive contributions to building a healthy community. © 2023, Archives of Design Research. All rights reserved.
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The medical field has undergone many changes since the start of the coronavirus disease 19 (COVID-19) pandemic. In small-and medium-sized hospitals that lack negative pressure facilities for operating rooms, it is impossible to operate on patients infected with COVID-19. As a result, many patients requiring emergency surgery experience serious complications or die. The authors performed intravenous regional anesthesia (IVRA) and emergency surgery in an isolation room on three patients who needed prompt surgical management for upper extremity arterial injuries but could not enter the operating room due to COVID-19 infection. Anesthesia was successful in all cases. A minor anesthetic complication occurred in one patient, who recovered spontaneously. IVRA is a relatively safe and easy method for anesthesia. More-over, since the tourniquet is inflated before anesthesia, it is well-suited for patients with arterial injury. The method is simple and therefore easy to perform in an isolation room where space and manpower are limited. IVRA can be a good option in emergency surgery for upper extremity artery injury. © 2023 Korean Wound Management Society.
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This study aims to comparatively analyze domestic travel intentions and actual travel behaviors in the Korean market. Using mixed methods, Study 1 found that the perceived health risk is the determinant factor for explaining domestic travel intentions. The moderating roles of age demonstrated that seniors intend to travel less since they are more sensitive to the health risk. Study 2 confirmed that seniors traveled less than younger travelers during the pandemic. Unexpectedly, females traveled more than males during the pandemic. Lastly, the types of destinations (indoor vs. outdoor destinations) also influenced travel behaviors;seniors, preferred outdoor destinations to indoor destinations. © 2023 Asia Pacific Tourism Association.
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OBJECTIVE: There is a lack of pediatric studies that have analyzed trends in mean body mass index (BMI) and the prevalence of obesity and overweight over a period that includes the mid-stage of the COVID-19 pandemic. Thus, we aimed to investigate trends in BMI, overweight, and obesity among Korean adolescents from 2005 to 2021, including the COVID-19 pandemic. SUBJECTS AND METHODS: We used data from the Korea Youth Risk Behavior Web-based Survey (KYRBS), which is nationally representative of South Korea. The study included middle- and high-school students between the ages of 12 and 18. We examined trends in mean BMI and prevalence of obesity and/or overweight during the COVID-19 pandemic and compared these to those of pre-pandemic trends in each subgroup by gender, grade, and residential region. RESULTS: Data from 1,111,300 adolescents (mean age: 15.04 years) were analyzed. The estimated weighted mean BMI was 20.48 kg/m2 (95% CI, 20.46-20.51) between 2005 and 2007, and this was 21.61 kg/m2 (95% CI, 21.54-21.68) in 2021. The prevalence of overweight and obesity was 13.1% (95% CI, 12.9-13.3%) between 2005 and 2007 and 23.4% (95% CI, 22.8-24.0%) in 2021. The mean BMI and prevalence of obesity and overweight have gradually increased over the past 17 years; however, the extent of change in mean BMI and in the prevalence of obesity and overweight during the pandemic was distinctly less than before. The 17-year trends in the mean BMI, obesity, and overweight exhibited a considerable rise from 2005 to 2021; however, the slope during the COVID-19 pandemic (2020-2021) was significantly less prominent than in the pre-pandemic (2005-2019). CONCLUSIONS: These findings enable us to comprehend long-term trends in the mean BMI of Korean adolescents and further emphasize the need for practical prevention measures against youth obesity and overweight.
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COVID-19 , Overweight , Adolescent , Humans , Child , Body Mass Index , Pandemics , Obesity , Republic of KoreaABSTRACT
Purpose: This study aims to examine whether investors react differently to the crisis during the COVID-19 pandemic based on chief executive officer (CEO) gender. Design/methodology/approach: This study is based on a sample of publicly listed companies in Korea. The study uses the ordinary least squares regression and propensity score matching approach to address the research question. The dependent variable used in the regressions is the cumulative abnormal returns over 30, 60 and 90 days after the first COVID-19 case was confirmed in Korea. Findings: The results show that cumulative abnormal returns over 30, 60 and 90 days after the first COVID-19 case are less negative for firms led by women CEOs compared to firms led by men CEOs. This is consistent with the prediction that investors favor firms with women CEOs in times of high uncertainty. Originality/value: This study adds to the growing literature on the stock market during the COVID-19 pandemic. It provides empirical evidence that the effect of the pandemic on stock market performance differs by management characteristics such as CEO gender. © 2022, Emerald Publishing Limited.
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This paper critically reviews whether the hierarchical system or intercrisis learning can be sufficient to understand Korea's COVID-19 responses. Our case study suggests that a Korean response system is a hybrid form that uses a hierarchical structure together with a network approach. To unveil theoretical models of how learning may occur and evolve during a crisis, we employ a policy learning model combining the network perspective and the four Cs model (cognition, communication, coordination, and control). We analyse the change in government manuals, response policies, and agenda streams observed in government documents. This analysis reveals far more complex interactions among actors and policies, both flexible and rigid at different phases of COVID-19. On top of policy learning, we conclude that it is necessary to rediscover the power of citizen voluntary responses and collaboration among actors of the response network through value change.
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As COVID-19 is still spreading globally, the narrow ship space makes COVID-19 easier for the virus to infect ship passengers. Tracking close contacts remains an effective way to reduce the risk of virus transmission. Therefore, indoor positioning technology should be developed for ship environments. Today, almost all smart devices are equipped with Bluetooth. The Angle of Arrival (AoA) using Bluetooth 5.1 indoor positioning technology is well suited for ship environments. But the narrow ship space and steel walls make the multipath effect more pronounced in ship environments. This also means that more noises are included in the signal. In the Uniform Rectangular Array (URA) type receiving antenna array, elevation and azimuth angles are two important parameters for the AoA indoor positioning technology. Elevation and azimuth angles are unstable because of the influence of noise. In this paper, a Self-Learning Mean Optimization Filter (SLMOF) is proposed. The goal of SLMOF is to find the optimal elevation and azimuth angles as a way to improve the Bluetooth 5.1 AoA indoor positioning accuracy. The experimental results show that the Root Mean Square Error (RMSE) of SLMOF is 0.44 m, which improves the accuracy by 72% compared to Kalman Filter (KF). This method can be applied to find the optimal average in every dataset.
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Currently, the most effective way to reduce transmission of COVID-19 is to differentiate between close contacts. Location points of close contact are essential for differentiation. As a major mode of transportation, ships provide a vehicle for virus transmission. Timely detection location of close contacts inside a ship can prevent the spread of viruses. Location-based services can be provided for ship passengers. Bluetooth is widely available in many wearable devices. The Bluetooth 5.1 angle of arrival (AoA) indoor positioning algorithms can provide a certain indoor positioning accuracy for ship passengers. The two most essential parameters in Bluetooth 5.1 AoA indoor positioning are elevation angle and azimuth angle. Elevation and azimuth are often not accurate enough due to noise, which increases indoor positioning errors. As a result, this paper proposes a mean optimization filter for ship environments, which combines the box plot method to improve Bluetooth 5.1 AoA indoor positioning accuracy, with an RMSE of 0.34 m. © 2022 Copyright for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).
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In an uncertain and escalating risk period resulting from the prolonged pandemic crisis, this study aimed to identify the dimensional nature of online travel agencies' (OTAs) website credibility, and empirically investigate the effects of its components on attitude and behavioral intentions. This study was conducted by collecting 559 questionnaires from mainland Chinese OTA users in the middle of the COVID-19 pandemic. The data analyses showed that OTA website credibility comprised six components. Other proposed paths, with the exception of four, were significant at the .05 or .001 level. Interestingly, the paths between content credibility and attitude toward the OTA and between content credibility and loyalty to the OTA were not significant. However, overall, it was confirmed that OTA website credibility determined attitude toward the OTA and loyalty to the OTA, which led to behavioral intention.
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Purpose: This study aims to examine whether investors react differently to the crisis during the COVID-19 pandemic based on chief executive officer (CEO) gender. Design/methodology/approach: This study is based on a sample of publicly listed companies in Korea. The study uses the ordinary least squares regression and propensity score matching approach to address the research question. The dependent variable used in the regressions is the cumulative abnormal returns over 30, 60 and 90 days after the first COVID-19 case was confirmed in Korea. Findings: The results show that cumulative abnormal returns over 30, 60 and 90 days after the first COVID-19 case are less negative for firms led by women CEOs compared to firms led by men CEOs. This is consistent with the prediction that investors favor firms with women CEOs in times of high uncertainty. Originality/value: This study adds to the growing literature on the stock market during the COVID-19 pandemic. It provides empirical evidence that the effect of the pandemic on stock market performance differs by management characteristics such as CEO gender. © 2022, Emerald Publishing Limited.
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Since the first advent of SARS-CoV-2 in December 2019, Coronavirus disease (COVID-19) is still affecting the world. In the pandemic situation of the novel infectious disease, early detection of COVID-19 infection and severity for febrile respiratory patients is critical for efficient management of the medical system delivery system with limited medical personnel and facilities. Thus, we propose early triage exploiting data-driven strategical methods and machine learning techniques using the data of 5,628 admitted patients provided by Korea Central Disease Control Headquarters and 50 confirmed cases in Korea University Ansan Hospital. We proved validity of our data-driven strategies with machine learning models accuracy by doing 200 experiments and find out the features that affect COVID-19 through various feature selection in each medical inspection step. As a result, Stage 5 shows the results of blood test could affect to classify critical and severe cases obtaining precision of 0.2, 0.03 higher than without blood test results. But Stage 3 without blood test results achieved the highest accuracy of 0.88 showing possibility of early triage system without blood test. In conclusion, our triage system, based on data-driven strategies and machine learning techniques, can help in early detection and triage of COVID-19 patients. © 2022 IEEE.
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In this study, we evaluated the functionality of water extracts from the fruit of Actinidia polygama (APF) in macrophages. The APF is a medicinal plant belonging to Actinidiaceae, it has been reported to exert anti-inflammatory, analgesic and hypouricemic activities. However, the potential mechanism for the immune activation of the APF is still insufficient. So, we evaluated whether APF exerts immune activation activities and elucidated its potential mechanism in macrophages. The APF dose-dependently increased the production of immunomodulators in macrophages. The inhibition of Toll-like receptor 4 (TLR4) blocked APF-mediated production of immunomodulators in RAW264.7 cells. In addition, APF-mediated production of immunomodulators was attenuated by MAPKs and NF-kappa B inhibition in RAW264.7 cells. Also, we analyzed the sugars content of the APF. The contents of glucose, galactose and fructose were 3597, 904, 7582 mg/L, respectively. These results suggest that the APF may have great potential for the development of immunomodulatory drugs.
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During the novel coronavirus (COVID-19) pandemic, some hotels have engaged in corporate social responsibility (CSR) activities to help overcome the crisis. Given that most existing research examines the impact of hotel CSR on a single stakeholder, how hotel CSR activities in a crisis are perceived by multiple stakeholders is unknown. Drawing on the concept of strategic philanthropy, this study examines the impact of hotel CSR activities during the pandemic, such as providing accommodations to healthcare workers, on hotel firms' market value and prospective hotel customers' booking behavior. Adopting mixed-methods approach, this study finds negative impacts of hotel CSR for strategic philanthropy on firm market value and customer booking behavior. The study result indicates that the value of hotel CSR depends on the nature and environmental contexts of CSR. Specific theoretical and practical implications are provided.