• 대한간호학회지
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• 제52권3호
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• pp.291-307
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• 2022

Purpose: The aims of study were to identify the main keywords, the network structure, and the main topics of press articles related to nurses that have appeared in media reports. Methods: Data were media articles related to the topic "nurse" reported in 16 central media within a one-year period spanning July 1, 2019 to June 30, 2020. Data were collected from the Big Kinds database. A total of 7,800 articles were searched, and 1,038 were used for the final analysis. Text network analysis and topic modeling were performed using NetMiner 4.4. Results: The number of media reports related to nurses increased by 3.86 times after the novel coronavirus (COVID-19) outbreak compared to prior. Pre- and post-COVID-19 network characteristics were density 0.002, 0.001; average degree 4.63, 4.92; and average distance 4.25, 4.01, respectively. Four topics were derived before and after the COVID-19 outbreak, respectively. Pre-COVID-19 example topics are "a nurse who committed suicide because she could not withstand the Taewoom at work" and "a nurse as a perpetrator of a newborn abuse case," while post-COVID-19 examples are "a nurse as a victim of COVID-19," "a nurse working with the support of the people," and "a nurse as a top contributor and a warrior to protect from COVID-19." Conclusion: Topic modeling shows that topics become more positive after the COVID-19 outbreak. Individual nurses and nursing organizations should continuously monitor and conduct further research on nurses' image.

• Journal of Trauma and Injury
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• 제36권3호
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• pp.172-179
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• 2023

Purpose: Out-of-hospital traumatic cardiac arrest (TCA) often has a poor prognosis despite rescue efforts. Although the incidence and mortality of out-of-hospital cardiac arrest have increased, bystander cardiopulmonary resuscitation (CPR) has decreased in some countries during the COVID-19 pandemic. In the prehospital setting, immediate treatment of cardiac arrest is required without knowing the patient's COVID-19 status. Because COVID-19 is usually transmitted through the respiratory tract, airway management can put medical personnel at risk for infection. This study explored whether on-scene treatments involving CPR for TCA patients changed during the COVID-19 pandemic in Korea. Methods: This retrospective study used data from emergency medical services (EMS) run sheets in Gangwon Province from January 2019 to December 2021. Patients whose initial problem was cardiac arrest and who received CPR were included. Data in 2019 were classified as pre-COVID-19 and all subsequent data (from 2020 and 2021) as post-COVID-19. Age, sex, possible cause of cardiac arrest, and treatments including airway maneuvers, oropharyngeal airway (OPA) or i-gel insertion, endotracheal intubation (ETI), bag-valve mask (BVM) ventilation, intravenous (IV) line establishment, neck collar application, and wound dressing with hemostasis were investigated. Results: During the study period, 2,007 patients received CPR, of whom 596 patients had TCA and 367 had disease-origin cardiac arrest (DCA). Among the patients with TCA, 192 (32.2%) were pre-COVID-19 and 404 (67.8%) were post-COVID-19. In the TCA group, prehospital treatments did not decrease. The average frequencies were 59.7% for airway maneuvers, 47.5% for OPA, 57.4% for BVM, and 51.3% for neck collar application. The rates of ETI, i-gel insertion, and IV-line establishment increased. The treatment rate for TCA was significantly higher than that for DCA. Conclusions: Prehospital treatments by EMS workers for patients with TCA did not decrease during the COVID-19 pandemic. Instead, the rates of ETI, i-gel insertion, and IV-line establishment increased.

• Journal of Korean Neurosurgical Society
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• 제65권2호
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• pp.269-275
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• 2022

Objective : The coronavirus disease 2019 (COVID-19) pandemic is affecting the characteristics of patients with head injuries. This study aimed to evaluate the effect of the COVID-19 pandemic on patients with head injuries at a regional emergency medical center in South Korea. Methods : From April 2019 to November 2020, 350 patients with head injuries were admitted to our hospital. The study period was divided into the pre-COVID-19 (n=169) and COVID-19 (n=181) eras (10 months each). Patients with severe head injuries requiring surgery (n=74) were categorized into those who underwent surgery (n=41) and those who refused surgery (n=33). Results : Head injuries in pediatric patients (<3 years) were more frequent in the COVID-19 era than in the pre-COVID-19 era (8.8% vs. 3.6%, p=0.048). More patients refused surgery in the COVID-19 era than in the pre-COVID-19 era (57.9% vs. 30.6%, p=0.021). Refusal of surgery was associated with old age (67.7±14.5 vs. 52.4±19.1, p<0.001), marital status (married, 84.8% vs. 61.0%, p=0.037), unemployment (42.4% vs. 68.3%, p=0.034), COVID-19 era (66.7% vs. 39.0%, p=0.021), and lower Glasgow coma scale scores (6.12±3.08 vs. 10.6±3.80, p<0.001). Multivariable logistic regression analysis revealed that refusal of surgery was independently associated with old age (adjusted odds ratio [OR], 1.084; 95% confidence interval [CI], 1.030-1.140; p=0.002), COVID-19 era (adjusted OR, 6.869; 95% CI, 1.624-29.054; p=0.009), and lower Glasgow coma scale scores (adjusted OR, 0.694; 95% CI, 0.568-0.848; p<0.001). Conclusion : We observed an increased prevalence of head injuries in pediatric patients (<3 years) during the COVID-19 pandemic. Additionally, among patients with severe head injuries requiring surgery, more patients refused to undergo surgery during the COVID-19 pandemic.

• 대한소아치과학회지
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• 제50권3호
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• pp.318-333
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• 2023

이 연구의 목적은 코로나 바이러스 감염증(Coronavirus Disease 2019, COVID-19) 시기의 12세 이하 아동에서 발생한 치과 외상의 변화 여부를 분석해 보는 것이다. 세계보건기구에서 COVID-19를 공식적으로 팬데믹으로 선포한 시점인 2020년 3월을 COVID-19의 기시점으로 설정하였다. 2018년 3월부터 2020년 2월까지를 COVID-19 이전 시기의 대상자를 Pre-COVID-19 군, 2020년 3월부터 2022년 3월까지를 COVID-19 이후 시기의 대상자를 COVID-19 군으로 분류하였다. 전자의무기록을 통해 외상과 관련한 정보들을 수집하였다. COVID-19 발생 전후 외상 환자 수는 유의미하게 감소하였다. COVID-19 기간 동안 남·여 비율과, 연령 구간의 분포 순서는 유의한 차이가 없었다. 영구치의 COVID-19 군에서 스포츠로 인한 외상 발생보다는 개인 이동 수단에 의한 외상의 비율이 높아졌다. COVID-19 군에서 치수 침범이 있는 치관 파절 비율이 치수 침범이 없는 치관 파절 비율보다 증가하였고 유의미하였다. 미취학 아동보다 학령기 아동에서 COVID-19에 의한 외상 패턴 변화가 뚜렷하게 관찰되었다. COVID-19와 같은 팬데믹 상황에서는 환경의 변화로 인해 호발하는 진단명이 변할 수 있다는 점을 알 수 있었다.

• The Journal of Asian Finance, Economics and Business
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• 제8권9호
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• pp.143-154
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• 2021

This study aims to explore the dynamic conditional correlation (DCC) between ten Asian stock indexes, the US stock index, and Bitcoin by using the dynamic conditional correlation model. The time span of the daily data is between January 2015 to May 2021, the total observation is 1,116. DCC(1,1)-EGARCH(1,1) with multivariate t and normal distributions for the DCC and EGARCH models, respectively, outperforms other models by the goodness of fit values. Except for Bitcoin, we discovered that the majority of the securities' volatilities have a very high volatility persistence. Furthermore, the negative shocks/news have more impact on the volatilities than positive shocks/news in most of the cases, except the stock index of China and Bitcoin. Most of the correlation pairs exhibit higher correlation during the COVID-19 pandemic compared to the pre-COVID-19, except Hong Kong-The US and Malaysia-Indonesia. Moreover, the correlation between Asian stock indexes during the COVID-19 pandemic is statistically higher than the pre-COVID-19 pandemic. However, there are a few instances where the Hong Kong stock index and a few countries are identical. The result of correlation size shows the connectedness between Asian stock markets, which are well-connected within the region, especially with South Korea, Singapore, and Hong Kong.

• 한국컴퓨터정보학회논문지
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• 제27권10호
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• pp.211-222
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• 2022

본 연구는 코로나 이전과 코로나 이후의 강의평가를 비교 분석하여, 코로나 이후 시대에 대학수업에서 고려해야 되는 사항은 무엇인지를 도출하고자 하였다. 이를 위해 서울시 소재 A대학의 4개년도 자료를 이용하였고, 코로나 이전은 2018년~2019년까지, 코로나 이후는 2020년~2021년까지 자료를 이용하였다. 연구결과에 의하면, 교양의 경우에는 "과제"가 코로나 이전과 이후와 상관없이 빈도 및 연결중심성(DC)이 가장 가장 높은 단어로 나타났으나, 전공에서는 "이해"가 가장 중요한 단어로 나타났다. 에코 네트워크의 분석결과, "동영상" 및 "비대면수업"의 경우에는 어렵다고 느끼고 있으며, 교수와 학생간의 "상호작용"이 중요하다고 생각하고 있었다. 결론적으로 코로나 이후의 교양 수업에서는 과제에 대한 비중을 낮추고, 학생과의 상호작용을 높이는 것이 중요하며, 전공의 경우에는 비대면 수업보다는 대면수업으로 운영하고, 동영상도 어렵지 않게 내용을 구성하는 것이 필요하다는 것을 확인하였다.

• International Journal of Computer Science & Network Security
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• 제21권3호
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• pp.206-211
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• 2021

Internet users are increasingly invited to express their opinions on various subjects in social networks, e-commerce sites, news sites, forums, etc. Much of this information, which describes feelings, becomes the subject of study in several areas of research such as: "Sensing opinions and analyzing feelings". It is the process of identifying the polarity of the feelings held in the opinions found in the interactions of Internet users on the web and classifying them as positive, negative, or neutral. In this article, we suggest the implementation of a sentiment analysis tool that has the role of detecting the polarity of opinions from people about COVID-19 extracted from social media (tweeter) in the Arabic language and to know the impact of the pre-processing phase on the opinions classification. The results show gaps in this area of research, first of all, the lack of resources when collecting data. Second, Arabic language is more complexes in pre-processing step, especially the dialects in the pre-treatment phase. But ultimately the results obtained are promising.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제38권2호
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• pp.93-120
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• 2024

수학 교육에서의 온라인 교육은 COVID19를 전후로 다양한 측면에서 변화하였다. 본 연구는 COVID19를 전후로 2017년부터 2023년까지 발간된 수학 교육 분야에서의 온라인 교육에 관한 98편의 논문을 대상으로 체계적 문헌 고찰을 수행하였다. 본 연구는 먼저 문헌에 나타난 온라인 교육과 관련된 여러 유사 용어들의 정의들을 대상으로 내용 분석을 진행하였다. 이후, 코로나 전, 코로나, 포스트 코로나 시대 별로 온라인 수학 교육의 연구 동향을 탐색하였으며, 온라인 교육의 효과에 대한 문헌들에 대해서는 추가적인 비교 분석을 진행하였다. 그 결과, 첫째, 온라인 교육과 유사한 용어들의 정의와 각 용어들 간의 차이점 및 위계를 정리할 필요성을 확인하였고 이에 대한 논의를 제시하였다. 둘째, 코로나를 계기로 교사에 대한 온라인 교육의 연구가 급격히 활발해졌으며 교사의 전문성이 강조되고 있음을 확인하였다. 셋째, 코로나 전에는 블렌디드와 플립트 러닝에 대한 연구가 많았지만 코로나 시대와 포스트 코로나 시대에는 실시간 쌍방향 수업에 대한 연구가 많은 비중을 차지하고 있었다. 마지막으로, 온라인 교육이 학업성취도에 미치는 영향은 문헌 별로 연구 배경과 모델에 따라 다양하게 나타났으며, 이에 따른 해석에는 주의가 필요함을 확인하였다. 본 논문은 이와 같은 연구 결과를 토대로 앞으로 수학 교육에서의 온라인 교육에 관한 연구 방향을 제시하였다.

• Journal of Preventive Medicine and Public Health
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• 제56권3호
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• pp.231-237
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• 2023

Objectives: This study aimed to identify risk factors associated with coronavirus disease 2019 (COVID-19) mortality in pre-elderly and elderly individuals in Jakarta, Indonesia. Methods: We employed a case-control study design, utilizing secondary data from the Epidemiology Surveillance, Immunization Prevention, and Disease Control Sections of the DKI Jakarta Provincial Health Office, collected from December 2020 to January 2021. The study included 188 cases and an equal number of controls. Cases were COVID-19 patients confirmed to have died, as reported by hospitals and communities and subsequently verified by healthcare workers. Control subjects were patients who completed a 14-day isolation period and had been officially declared recovered by healthcare professionals. The dependent variable was the mortality of COVID-19 patients in the January 2021 period. The independent variables consisted of demographic data (age and sex), clinical symptoms (cough, runny nose, anosmia, diarrhea, headaches, abdominal pain, muscle pain, and nausea/vomiting), and comorbidities (hypertension, heart disease, and diabetes). Multivariate analysis was conducted using multiple logistic regression. Results: The multiple logistic regression analysis revealed several factors associated with COVID-19 fatalities in Jakarta: age of 60 years or older (odds ratio [OR], 4.84; 95% CI, 3.00 to 7.80), male (OR, 2.38; 95% CI, 2.41 to 3.68), dyspnea (OR, 3.93; 95% CI, 2.04 to 7.55), anosmia (OR, 0.13; 95% CI, 0.04 to 0.46), and heart disease (OR, 4.38; 95% CI, 1.04 to 18.46). Conclusions: The control and prevention of COVID-19 among elderly individuals require particular vigilance. When a COVID-19 case is detected within this demographic, prompt treatment and medication administration are crucial to mitigate the presenting symptoms.

• Journal of Preventive Medicine and Public Health
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• 제56권5호
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• pp.413-421
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• 2023

Objectives: This study explored the effect of the coronavirus disease 2019 (COVID-19) pandemic on psychosocial stress in prime working-age individuals in Korea, focusing on gender inequalities. We hypothesized that the impact of COVID-19 on mental health would differ by age and gender, with younger women potentially demonstrating heightened vulnerability relative to men. Methods: The study involved data from the Korea Community Health Survey and included 319 592 adults aged 30 years to 49 years. We employed log-binomial regression analysis, controlling for variables including age, education, employment status, marital status, and the presence of children. The study period included 3 phases: the period prior to the COVID-19 outbreak (pre-COVID-19), the early pandemic, and the period following the introduction of vaccinations (post-vaccination). Results: The findings indicated that women were at a heightened risk of psychosocial stress during the early pandemic (relative risk [RR], 1.01; 95% confidence interval [CI], 0.98 to 1.05) and post-vaccination period (RR, 1.07; 95% CI, 1.04 to 1.10) compared to men. This pattern was prominent in urban women aged 30-34 years (pre-COVID-19: RR, 1.06; 95% CI, 1.02 to 1.10; early pandemic: RR, 1.16; 95% CI, 1.08 to 1.25; post-vaccination period, RR, 1.22; 95% CI, 1.14 to 1.31). Conclusions: The COVID-19 pandemic has exerted unequal impacts on psychosocial stress among prime working-age individuals in Korea, with women, particularly those in urban areas, experiencing a heightened risk. The findings highlight the importance of addressing gender-specific needs and implementing appropriate interventions to mitigate the psychosocial consequences of the pandemic.