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1.
Curr Psychol ; : 1-22, 2021 Aug 11.
Article in English | MEDLINE | ID: covidwho-2327420

ABSTRACT

Motivated from the shortage of the existing research studies on impacts of dangerously contagious diseases on firms' financial performance, this study sheds light on the impacts of Coronavirus (Covid-19) outbreak on financial performance upon on the quarterly data of 126 Chinese listed firms across 16 industries. Overall, the Covid-19 outbreak reduced Chinese listed firms' financial performance proxied by the revenue growth rate, ROA, ROE, and asset turnover. This outbreak's negative effects on Chinese firms' profitability were much smaller than that on their revenue growth rates. While this outbreak's negative effects on financial performance of Chinese listed firms were bigger for those that were seriously affected by this pandemic like airlines, travel, and entertainment (ATE), this pandemic's effects were positive for the medicine industry. In the meanwhile, Chinese listed firms that located in high-risk regions suffered a bigger financial loss during the outbreak, and especially there was a strong Hubei effect. The corporate culture and CSR moderated the inverse relationship between this outbreak and Chinese firms' financial performance. Findings of this study contribute to enrich the existing literature on impacts of the Covid-19 outbreak on firms' financial performance worldwide and suggest helpful practical and theoretical implications.

2.
Renewable Energy ; 211:802-808, 2023.
Article in English | ScienceDirect | ID: covidwho-2316944

ABSTRACT

Using daily data from the beginning of 2018 to the end of 2022 and the Seemingly Unrelated Regression method, this paper sought to determine the relationship between green and non-green cryptocurrency indices as representative of blockchain technologies on three green bond indices in two periods before the outbreak of COVID-19 and the corona period. The preliminary results confirmed that by spreading the coronavirus, the sensitivity of the green bond market has increased to the gold index. In addition, the green cryptocurrency index (Cardano) significantly impacts green bonds more during the Corona era. The negative effect of the Bitcoin index on the index of green bonds in the Corona era is less than its adverse effect in the pre-corona period. Developing green cryptocurrencies and linking cryptocurrencies and digital green financing are two significant recommended policy implications for scholars and policymakers.

3.
Frontiers in public health ; 10, 2022.
Article in English | EuropePMC | ID: covidwho-1981328

ABSTRACT

A major emphasis is the dissemination of COVID-19 across the country's many regions and provinces. Using the present COVID-19 pandemic as a guide, the researchers suggest a hybrid model architecture for analyzing and optimizing COVID-19 data during the complete country. The analysis of COVID-19's exploration and death rate uses an ARIMA model with susceptible-infectious-removed and susceptible-exposed-infectious-removed (SEIR) models. The logistic model's failure to forecast the number of confirmed diagnoses and the snags of the SEIR model's too many tuning parameters are both addressed by a hybrid model method. Logistic regression (LR), Autoregressive Integrated Moving Average Model (ARIMA), support vector regression (SVR), multilayer perceptron (MLP), Recurrent Neural Networks (RNN), Gate Recurrent Unit (GRU), and long short-term memory (LSTM) are utilized for the same purpose. Root mean square error, mean absolute error, and mean absolute percentage error are used to show these models. New COVID-19 cases, the number of quarantines, mortality rates, and the deployment of public self-protection measures to reduce the epidemic are all outlined in the study's findings. Government officials can use the findings to guide future illness prevention and control choices.

4.
Protein Cell ; 13(8): 602-614, 2022 08.
Article in English | MEDLINE | ID: covidwho-1777862

ABSTRACT

The nucleocapsid (N) protein of SARS-CoV-2 has been reported to have a high ability of liquid-liquid phase separation, which enables its incorporation into stress granules (SGs) of host cells. However, whether SG invasion by N protein occurs in the scenario of SARS-CoV-2 infection is unknow, neither do we know its consequence. Here, we used SARS-CoV-2 to infect mammalian cells and observed the incorporation of N protein into SGs, which resulted in markedly impaired self-disassembly but stimulated cell cellular clearance of SGs. NMR experiments further showed that N protein binds to the SG-related amyloid proteins via non-specific transient interactions, which not only expedites the phase transition of these proteins to aberrant amyloid aggregation in vitro, but also promotes the aggregation of FUS with ALS-associated P525L mutation in cells. In addition, we found that ACE2 is not necessary for the infection of SARS-CoV-2 to mammalian cells. Our work indicates that SARS-CoV-2 infection can impair the disassembly of host SGs and promote the aggregation of SG-related amyloid proteins, which may lead to an increased risk of neurodegeneration.


Subject(s)
Amyotrophic Lateral Sclerosis , COVID-19 , Amyloidogenic Proteins/metabolism , Amyotrophic Lateral Sclerosis/genetics , Animals , Cytoplasmic Granules/metabolism , Mammals , SARS-CoV-2 , Stress Granules
5.
Front Psychol ; 12: 780992, 2021.
Article in English | MEDLINE | ID: covidwho-1662616

ABSTRACT

The effect of COVID-induced public anxiety on stock markets, particularly in European stock market returns, is examined in this research. The search volumes for the notion of COVID-19 gathered by Google Trends and Wikipedia were used as proxies for COVID-induced public anxiety. COVID-induced public anxiety was shown to be linked with negative returns in European stock markets when a panel data method was used to a sample of data from 14 European stock markets from January 2, 2020 to September 17, 2020. Using an automated trading system, we used this finding to suggest investment methods based on COVID-induced anxiety. The findings of back-testing indicate that these techniques have the potential to generate exceptional profits. These results have significant consequences for government officials, the media, and investors.

6.
Front Public Health ; 9: 723084, 2021.
Article in English | MEDLINE | ID: covidwho-1450848

ABSTRACT

The Covid-19 outbreak has spread over the world, limiting population and trade, causing job losses, and forcing businesses to close. The study's goal is to look at Covid-19's pandemic and consumer survival as a mediator for the future of running a business when FMCG companies are doing well. The researchers employed a basic random sampling strategy to do a layered transverse evaluation of samples. EFA, CFA, and SEM are used to choose data collection techniques for participants at Covid-19. According to the data, Malaysia has resulted in job losses, business growth, and customer satisfaction retention, as well as an increase in unemployment, company closures, and a drop in overall GDP. The impact of the Covid-19 epidemic on survival, production, and GDP has been demonstrated. Incorporating technology into all aspects of a company's working practices reveals the necessity and capacity of the organization to adapt to new scenarios.


Subject(s)
COVID-19 , Commerce , Consumer Behavior , Humans , Pandemics , SARS-CoV-2
7.
Front Public Health ; 9: 710743, 2021.
Article in English | MEDLINE | ID: covidwho-1450846

ABSTRACT

This research described Chinese listed firms' COVID-19 Outbreak and financial performance using corporate culture (CC) and corporate social responsibility (CSR) evidence. The epidemic's impact on Chinese companies' profits was much less than the impact on their sales growth rates. Although the COVID-19 has had a more significant negative impact on the financial performance of Chinese listed companies in sectors that are more severely impacted, such as travel and entertainment, we believe that the financial performance of the medical industry has improved as a result of the outbreak. Meanwhile, Chinese listed companies in high-risk areas experience more significant financial losses during the epidemic, and the Hubei impact is hefty weight. Corporate social responsibility moderated the inverse relationship between this epidemic and Chinese firms' economic success. This research enhances the current literature on the effects of the COVID-19 on financial success and practical, realistic, and theoretical consequences in companies worldwide.


Subject(s)
COVID-19 , Organizational Culture , China/epidemiology , Disease Outbreaks , Humans , SARS-CoV-2 , Social Responsibility
8.
Front Public Health ; 8: 627001, 2020.
Article in English | MEDLINE | ID: covidwho-1058478

ABSTRACT

This article tests five major economies of the world, United Kingdom, Japan, Brazil, Chin and lastly, India, for the changes in the monetary policy decisions that have been implemented following the Covid-19 outbreak. The assessment was undertaken in the form of an event study analysis, further substantiated with a regression analysis conducted for exploring the significance of CPI and real GDP in predicting the policy interest rates in the economy. The results of the event study analysis presented that the abnormal changes in the interest rates were statistically significant in the case of the United Kingdom, Brazil, and China, while the abnormal changes were found to be statistically insignificant in the case of India and Japan.


Subject(s)
COVID-19/economics , COVID-19/epidemiology , Economics/statistics & numerical data , Health Policy/economics , Pandemics/economics , Pandemics/statistics & numerical data , Public Policy/economics , Brazil/epidemiology , China/epidemiology , Humans , India/epidemiology , Japan/epidemiology , SARS-CoV-2 , United Kingdom/epidemiology
9.
Pacific-Basin Finance Journal ; : 101463, 2020.
Article in English | ScienceDirect | ID: covidwho-919561

ABSTRACT

This study explores whether investor sentiment, driven by Coronavirus-related news (CRNs) and economic-related announcements (ERAs) associated with the Coronavirus outbreak, is priced in medical stock portfolios in China, Hongkong, Korea, Japan, and U.S. We find that the CNRs and ERAs do not trigger irrational investment behaviours towards medical stocks. CRNs exert significant and positive effects on the five markets' medical portfolios. ERAs also pose positive and significant effects on five markets' medical portfolios. Furthermore, ERAs have stronger effects on the institutional investor sentiment than the individual investor sentiment. Total effects of CRNs and ERAs on five markets' medical stock portfolios are positive and significant, meaning the optimistic investor sentiment on the medical industry, which plays the critical role in preventing this unprecedented infectious disease.

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