• 한국융합학회논문지
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• 제12권12호
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• pp.281-286
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• 2021

본 연구는 COVID-19와 인간의 삶의 질에 대한 기초연구이다. 재난 후 사람들의 삶에 어떠한 변화가 있는지를 밝히고, 이를 토대로 이 시대를 살아가는 모든 대상에게 효과적으로 재난 이후 삶의 만족도를 향상시키기 위한 위기개입 연구의 기초자료를 제공하는 것이 연구의 목적이다. 본 연구는 COVID-19를 경험한 성인 3명을 대상으로 질적연구를 실시 하였다. 연구결과 COVID-19 이전과 이후 삶의 변화는 대상에 따라 달랐다. COVID-19는 분명 우리 사회에 큰 재난이다. 이러한 재난 상황을 슬기롭게 대처하기 위해서는 위기 개입프로그램이 절실하다고 할 수 있다. 대상에 따른 위기 상황에 즉각적으로 초점을 맞추고 현재 어려움을 평가하여 상황에 대해 클라이언트가 느끼는 반응을 파악하여 그들의 분노와 불안 등의 감정을 해소할 수 있는 프로그램이 요청된다고 할 수 있다.

• 한국정보시스템학회지:정보시스템연구
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• 제30권3호
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• pp.21-45
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• 2021

Purpose This paper analyzed the impacts of domestic stock market by a global pandemic such as COVID-19. We investigated how the overall pattern of the stock market changed due to the impact of the COVID-19 pandemic. In particular, we analyzed in depth the pattern of stock price, as well, tried to find what factors affect on stock market index(KOSPI) in the healthcare industry due to the COVID-19 pandemic. Design/methodology/approach We built a data warehouse from the databases in various industrial and economic fields to analyze the changes in the KOSPI due to COVID-19, particularly, the changes in the healthcare industry centered on bio-medicine. We collected daily stock price data of the KOSPI centered on the KOSPI-200 about two years before and one year after the outbreak of COVID-19. In addition, we also collected various news related to COVID-19 from the stock market by applying text mining techniques. We designed four experimental data sets to develop decision tree-based prediction models. Findings All prediction models from the four data sets showed the significant predictive power with explainable decision tree models. In addition, we derived significant 10 to 14 decision rules for each prediction model. The experimental results showed that the decision rules were enough to explain the domestic healthcare stock market patterns for before and after COVID-19.

• 한국IT서비스학회지
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• 제20권5호
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• pp.1-9
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• 2021

Since the first confirmed case in January 2020, Coronavirus disease 2019(COVID-19) has brought many changes to our society, and Korea is no exception. Some changes are direct and immediate such as restrictions on overseas travel and social distancing, but the others are indirect and slowly adapted such as lifestyle changes impacting industries and businesses. IT service sector is tremendously influenced by COVID-19. IT service is used extensively in response to COVID-19 taking advantage of its non-face-to-face characteristics. In that sense, the industry is positively affected and in some sense invigorated, giving birth to new kind of services. This special issue focuses on introducing how the IT services are affected, what kind of transformations are undergoing, and how these are expedited after COVID-19. This special issue expands and extends the case research section by collecting new IT service case studies concerning these topics. After competitive review process, 11 studies are selected for this special issue which deals with four different but closely related aspects: (1) evolutions of private IT services, (2) transformations in public IT services, (3) impacts in the hospitality and tourism industry, and (4) changes of people's behavior along with COVID-19. The first set reports on the evolution of private IT services that have created terms such as foodtech and edutech as we enter a rapid non-face-to-face situation. The second set consists of studies dealing with the evolution of public IT services. Evolution and rapid response to non-face-to-face appear to be no exception in the public sector. The third includes studies of hospitality and tourism which is most strongly affected by COVID-19. The last set deals with the behavioral changes of users such as technostress in telecommuting. Lessons learned through best practices and key problems identified in these studies may help us to actively respond to the coming waves of changes incurred by COVID-19 in our society as well as in the IT service industry.

• Journal of Korean Biological Nursing Science
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• 제23권4호
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• pp.318-329
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• 2021

Purpose: This study was conducted to identify factors affecting COVID-19 vaccination and associated side effects among health care workers in a small and medium-sized hospital. Methods: In May 2021, 301 workers out of a total of 670 working in a small and medium-sized hospital in Gyeonggi-do, were surveyed. The small and medium-sized hospital treats patients with COVID-19. Health care workers across different medical institutions responded with self-reported internet questionnaires. Factors influencing COVID-19 vaccination were analyzed via logistic regression. Results: Out of 301 subjects, 89.0% showed an intention to inoculate, and 85.7% were vaccinated against COVID-19. The most frequent reason for vaccination was responsibility as a medical worker. The fear of adverse reactions was the most frequent reason for non-vaccination. Adverse reactions after inoculation occurred in 70.9% of cases, and 30.6% were referred for treatment of adverse reactions. The factors ultimately influencing COVID-19 vaccination were vaccination intention, previous side effects from other vaccinations, occupation, and age. Conclusion: In order to improve the effectiveness of COVID-19 vaccination, a systematic approach is required to determine the risk factors associated with the young age of the administrative staff/personnel, subjects with a history of side effects associated with other vaccines, and health care workers who do not intend to be vaccinated. It is important to develop strategies to improve immunization. In addition, accurate and essential information regarding the side effects of vaccination is needed, along with appropriate education and publicity.

• 산업경영시스템학회지
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• 제44권4호
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• pp.154-168
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• 2021

COVID-19 has been spreading all around the world, and threatening global health. In this situation, identifying and isolating infected individuals rapidly has been one of the most important measures to contain the epidemic. However, the standard diagnosis procedure with RT-PCR (Reverse Transcriptase Polymerase Chain Reaction) is costly and time-consuming. For this reason, pooled testing for COVID-19 has been proposed from the early stage of the COVID-19 pandemic to reduce the cost and time of identifying the COVID-19 infection. For pooled testing, how many samples are tested in group is the most significant factor to the performance of the test system. When the arrivals of test requirements and the test time are stochastic, batch-service queueing models have been utilized for the analysis of pooled-testing systems. However, most of them do not consider the false-negative test results of pooled testing in their performance analysis. For the COVID-19 RT-PCR test, there is a small but certain possibility of false-negative test results, and the group-test size affects not only the time and cost of pooled testing, but also the false-negative rate of pooled testing, which is a significant concern to public health authorities. In this study, we analyze the performance of COVID-19 pooled-testing systems with false-negative test results. To do this, we first formulate the COVID-19 pooled-testing systems with false negatives as a batch-service queuing model, and then obtain the performance measures such as the expected number of test requirements in the system, the expected number of RP-PCR tests for a test sample, the false-negative group-test rate, and the total cost per unit time, using the queueing analysis. We also present a numerical example to demonstrate the applicability of our analysis, and draw a couple of implications for COVID-19 pooled testing.

• The Korean Journal of Pain
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• 제35권1호
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• pp.14-21
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• 2022

The coronavirus disease 2019 (COVID-19) pandemic, which has been rampant since the end of 2019, has evidently affected pain management in clinical practice. Fortunately, a COVID-19 vaccination program is currently in progress worldwide. There is an ongoing discussion that pain management using steroid injections can decrease COVID-19 vaccine efficacy, although currently there is no direct evidence to support this statement. As such, the feeling of pain in patients is doubled in addition to the co-existing ill-effects of social isolation associated with the pandemic. Thus, in the COVID-19 era, it has become necessary that physicians be able to provide high quality pain management without negatively impacting COVID-19 vaccine efficacy. Steroids can alter the entire process involved in the generation of adaptive immunity after vaccination. The period of hypophysis-pituitary-adrenal axis suppression is known to be 1 to 4 weeks after steroid injection, and although the exact timing for peak efficacy of COVID-19 vaccines is slightly different for each vaccine, the average is approximately 2 weeks. It is suggested to avoid steroid injections for a total of 4 weeks (1 week before and after the two vaccine doses) for the double-shot vaccines, and for 2 weeks in total (1 week before and after vaccination) for a single-shot vaccine. This review focuses on the basic concepts of the various COVID-19 vaccines, the effect of steroid injections on vaccine efficacy, and suggestions regarding an appropriate interval between the administration of steroid injections and the COVID-19 vaccine.

• 보건행정학회지
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• 제32권3호
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• pp.304-316
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• 2022

Background: As prevention of coronavirus disease 2019 (COVID-19) transmission in healthcare settings has become a critical component in its effective management, COVID-19 specific infection prevention and control (IPC) guidelines were developed and implemented by numerous countries. Although largely based on the current evidence-base, guidelines show much heterogeneity, as they are influenced by respective health system capacities, epidemiological risk, and socioeconomic status. This study aims to analyze the variations and concurrences of these guidelines to draw policy implications for COVID-19 response and future guidelines development. Methods: The contents of the COVID-19 IPC guidelines were analyzed using the categories and codes developed based on "World Health Organization guidelines on core components." Data analysis involved reviewing, appraising and synthesizing data from guidelines, which were then arranged into categories and codes. Selection of countries was based on the country income level, availability of COVID-19 specific IPC guideline developed at a national or district level. Results: The guidelines particularly agreed on IPC measures regarding application of standard precautions and providing information to patients and visitors, monitoring and audit of IPC activities and staff illnesses, and management of built environment/equipments. The guidelines showed considerable differences in certain components, such as workplace safety measures and criteria for discontinuation of precautions. Several guidelines also contained unique features which enabled a more systematic response to COVID-19. Conclusion: The guidelines generally complied with the current evidence-based COVID-19 management but also revealed variances stemming from differences in local health system capacity. Several unique features should be considered for benchmark in future guidelines development.

• 대한한방내과학회지
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• 제43권4호
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• pp.779-793
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• 2022

Objectives: The purpose of this study was to report on the cases and prescriptions of non-face-to-face care performed to alleviate COVID-19 symptoms and to present their results. Methods: This study was conducted on 63 COVID-19 patients who visited the Ilsan Hamsoa Korean Medicine Clinic from January 24 to June 11, 2022. We retrospectively analyzed all 63 patient charts and amassed COVID-19-related symptoms and their changes according to clinical characteristics and outcomes. Results: All 63 COVID-19 patients complained of symptoms, such as coughing, sore throat, sputum, fever, headache, myalgia, rhinorrhea, nasal obstruction, postnasal drip, and voice change. In total, 30 patients were administered Eunma-san, 6 patients were administered Eungyo-san plus Mahaenggamseok-tang, 10 patients were administered Galgeunhaegi-tang, 7 patients were administered Eungyo-san, 6 patients were administered Maekmundong-tang, and 4 patients were administered Jugyeopseoggo-tang. Improvements in symptoms due to herbal medicine included the disappearance of COVID-19 fever (22 cases) within 3.59±4.2 days, sore throat (32 cases) within 4.37±2.98 days, and cough (36 cases) within 4.86±3.1 days. Conclusion: Various herbal medicine prescriptions were effective COVID-19 treatments, indicating that herbal medicines may be alternative treatment options for COVID-19. However, the evidence should be supplemented with better designed prospective research on individual prescriptions.

• 디지털융복합연구
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• 제20권2호
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• pp.175-184
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• 2022

본 연구는 COVID-19 불안감이 식생활 라이프스타일에 미치는 영향과 라이프스타일에 따른 드론 음식배달 서비스 태도에 미치는 영향을 조사하였다. 356명 중국 소비자를 대상으로 한 설문조사 연구결과는 첫째, COVID-19 불안감은 건강 지향형, 안전 지향형, 편의 지향형 라이프스타일과 정(+)의 관계가 있었다. 둘째, 건강 지향형, 유행 지향형, 편의 지향형의 경우 드론 음식배달 서비스의 안정성, 신속성, 부합성 인식과 긍정적인 관계가 있는 것으로 나타났다. 미각 지향형 라이프스타일은 서비스 안정성 인식, 안전 지향형 라이프스타일은 안정성 및 신속성 인식과 긍정적인 관계가 있는 것으로 나타났다. 셋째, 서비스의 인식된 안정성, 신속성, 부합성은 서비스 이용의도를 높이는 것으로 나타났다. 본 연구 결과는 COVID-19 불안감이 식생활 라이프스타일과 연관되어 드론 음식 배달서비스에 대한 소비자 태도에 영향을 미친다는 것을 보여준다.

• Journal of Ginseng Research
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• 제46권2호
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• pp.175-182
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• 2022

Coronavirus disease 2019 (COVID-19) not only targets the respiratory system but also triggers a cytokine storm and a series of complications, such as gastrointestinal problems, acute kidney injury, and myocardial ischemia. The use of natural products has been utilized to ease the symptoms of COVID-19, and in some cases, to strengthen the immune system against COVID-19. Natural products are readily available and have been regularly consumed for various health benefits. COVID-19 has been reported to be associated with the risk of thromboembolism and deep vein thrombosis. These thrombotic complications often affects mortality and morbidity. Panax ginseng, which has been widely consumed for its various health benefits has also been reported for its therapeutic effects against cardiovascular disease, thrombosis and platelet aggregation. In this review, we propose that P. ginseng can be consumed as a supplementation against the various associated complications of COVID-19, especially against thrombosis. We utilized the network pharmacology approach to validate the potential therapeutic properties of P. ginseng against COVID-19 mediated thrombosis, the coagulation pathway and platelet aggregation. Additionally, we aimed to investigate the roles of P. ginseng against COVID-19 with the involvement of platelet-leukocyte aggregates in relation to immunity-related responses in COVID-19.