Dissecting returns of non-fungible tokens (NFTs): Evidence from CryptoPunks

We use transaction data on CryptoPunks to dissect the factors affecting the returns of non-fungible tokens (NFTs). Our results show that trading volume in the short period before a trader buys (sells) CryptoPunk relates negatively (positively) to the returns on NFTs, suggesting that when market trading volume is at a high level, NFT owners are better off on the sell side, and investors interested in NFTs should avoid joining the herd. Turnover of a token tends to harm its returns. Finally, both traders' willingness to purchase and trading experience have a positive impact on NFT returns within short-term investment horizons. © 2023 Elsevier Inc.

[Health management of breast cancer patients outside the hospital during the outbreak of 2019 novel coronavirus disease].

The outbreak of 2019 novel coronavirus disease (COVID-19) is spreading rapidly. In order to prevent cluster outbreaks, the government strengthened the management and control of personnel mobility, which had a great impact on the examination and treatment of breast cancer patients. This paper discusses how to realize scientific health management of breast cancer patients outside the hospital based on the existing epidemic situation, characteristics of breast cancer patients and public health safety factors. The breast cancer patients should synthetically consider the epidemic prevention situation of inhabitance, the disease stage and previous therapeutic schedule to decide the next therapeutic schedule. If necessary, after professional discussion and communication between doctors and patients online or offline, the hospital visiting time should be delayed through seeking alternative treatment schemes, and psychological counseling for patients should be paid attention to at the same time.

Using focus group interviews to investigate the willingness of medical personnel to voluntarily participate in COVID-19 group tasks in a one government quarantine facility in north Taiwan

Objectives: The Taiwan Centers for Disease Control have established government quarantine facilities (GQF) to prevent the community spread of COVID-19. Medical personnel are frontline workers who must have contact with individuals in quarantine and are thus at higher risk of infection. As a reference for future recruitment, this study investigated why some medical personnel volunteer to care for individuals in GQF. Methods: The researchers used purposive sampling to recruit participants from a GQF in northern Taiwan. Focus group interviews were administered. The consistency of the interview outline content was 91%. After the interviews, content analysis was performed to examine and summarize the data. The data were coded before comparison, categorization and summarization, producing various core categories. Results: A total of 12 participants voluntarily attended our interviews, compromising 4 men and 8 women, with an average age of 48.1 ±6.4 years and an average length of service in GQF of 82.1 ± 77.1 days. Our study results revealed four aspects and six reasons that affect the voluntary participation of medical personnel in epidemic prevention tasks. The first aspect was meeting safety needs, and the reasons included sufficient personal protective equipment, complete standard operating procedures, and orientation training and in-service education and training. The second aspect was meeting the needs of love and belonging, and the reason included a good working atmosphere. The third aspect was meeting the need for self-esteem, and the reason included Taiwan's previous SARS epidemic prevention experience. Finally, the fourth aspect was meeting the need for selfrealization, and the reason was based on the humanistic concern. Conclusions: At the time of the coronavirus outbreak, various countries reported insufficient medical personnel or personnel unwilling to participate in epidemic prevention work. Our results revealed that if the environment met the Maslow's hierarchy of needs, it can attract medical personnel to volunteer in GQF tasks. In formulating policies, the needs must be met at all levels, so that medical staff would be willing to participate in epidemic prevention work. © 2021 Chinese Public Health Association of Taiwan. All rights reserved.

Age-stratified analysis of SARS-CoV-2 infection and case fatality rate in China, Italy, and South Korea.

OBJECTIVE: We aimed to compare the characteristics of coronavirus disease (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in China, Italy, and South Korea. MATERIALS AND METHODS: Detailed national epidemiological information of COVID-19 was retracted from the latest statistics reports from China, Italy, and South Korea. Population-based analysis of the age distribution among confirmed cases was conducted and their crude case fatality ratio in each c RESULTS: The age distributions among COVID-19 cases were relatively similar between China and Italy with primarily elderly populations infected, which were considerably different from that in South Korea with primarily younger individuals infected. Most deaths occurred among elderly individuals who were older than 60 years in both Italy (98.0%) and South Korea (87.9%), consistent with the previous data from China (81.0%). CONCLUSIONS: Most deaths occurred among elderly individuals who were over 60 in China, Italy, and South Korea. South Korea's data suggest that younger individuals might be more susceptible to SARS-CoV-2 infection, which might be fully under detected in China and Italy.