ABSTRACT
Restrictions during the COVID-19 pandemic significantly affected people's opportunities to engage in activities that are meaningful to their lives. In response to these constraints, many people, including older adults, turned to digital technologies as alternative ways to pursue meaningful activities. These technology-mediated activities, however, presented new challenges for older adults' everyday use of technology. In this paper, we investigate how older adults used digital technologies for meaningful activities during COVID-19 restrictions. We conducted in-depth interviews with 40 older adults and analyzed the interview data through the lens of self-determination theory (SDT). Our analysis shows that using digital technologies for meaningful activities can both support and undermine older people's three basic psychological needs for autonomy, competence, and relatedness. We argue that future technologies should be designed to empower older adults' content creation, engagement in personal interests, exploration of technology, effortful communication, and participation in beneficent activities. © 2023 ACM.
ABSTRACT
The COVID-19 lockdown contributes to the improvement of air quality. Most previous studies have attributed this to the reduction of human activity while ignoring the meteorological changes, this may lead to an overestimation or underestimation of the impact of COVID-19 lockdown measures on air pollution levels. To investigate this issue, we propose an XGBoost-based model to predict the concentrations of PM2.5 and PM10 during the COVID-19 lockdown period in 2022, Shanghai, and thus explore the limits of anthropogenic emission on air pollution levels by comprehensively employing the meteorological factors and the concentrations of other air pollutants. Results demonstrate that actual observations of PM2.5 and PM10 during the COVID-19 lockdown period were reduced by 60.81% and 43.12% compared with the predicted values (regarded as the period without the lockdown measures). In addition, by comparing with the time series prediction results without considering meteorological factors, the actual observations of PM2.5 and PM10 during the lockdown period were reduced by 50.20% and 19.06%, respectively, against the predicted values during the non-lockdown period. The analysis results indicate that ignoring meteorological factors will underestimate the positive impact of COVID-19 lockdown measures on air quality. © 2023 by the authors.
ABSTRACT
The SARS-CoV-2 virus is still a challenge because of its diversity and mutations. The binding interactions of the angiotensin converting enzyme 2 (ACE2) receptor and the spike protein are relevant for the SARS-CoV-2 virus to enter the cell. Consequently, it is important and helpful to analyze binding activities and the changes in the structure of the ACE2 receptor and the spike protein. Surface enhanced Raman spectroscopy is able to analyze small concentrations of the proteins without contact, non-invasively and label-free. In this work, we present a SERS based approach in the visible wavelength range to analyze and study the binding interactions of the ACE2 receptor and the spike protein. SERS measurements of the ACE2 receptor, the spike protein and the ACE2-spike complex were performed. Additionally, an inhibitor was used to prevent the spike protein from binding to ACE2 and to compare the results. The analysis of the measured SERS spectra reveals structural differences and changes due to binding activities. Thus, we show that the performed SERS based approach can help for rapid and non-invasive analysis of binding interactions of the ACE2-spike complex and also of protein binding in general. © 2023 SPIE.
ABSTRACT
On the verge of the expiry of land contracts, it is theoretically and practically important to explore the willingness and motivations of farmers to stabilize the land contract relationship, with regards to protecting their land contract rights, addressing potential contradictions during the land contract extension, and maintaining the stability of contracted land. Using China Land Economic Survey Data in 2020, this paper explores the impact of differences in areas per capita of household contracted land on farmers' willingness to stabilize land contract relationship. The findings show that most farmers support the stability of land contract relationship;the smaller areas per capita of contracted land are occupied by households than the average in the village, the weaker of the farmers' willingness to stabilize the land contract relationship. The difference between the areas per capita of contracted land ownership of a household and the average in the village has a greater impact on the willingness to stabilize land contract relationship for middle-and low-income farmers, while the development of land transfer market does not increased the willingness. Affected by the COVID-19 pandemic, the land plays a more important role of employment security, which reduces farmers' willingness to stabilize the land contract relationship. Furthermore, the promotion of socialized agricultural service has also mitigated the willingness of farmers o stabilize the land contract relationship.
ABSTRACT
This study was conducted with the aim of empirically analyzing the impacts of the pandemic of the Covid-19 on the Quebec tourism industry, with a particular focus on the outdoor sector, given that the latter seems to have been a form of escape in several countries and for many citizens. Based on a quantitative approach and a self-administered survey in the summer of 2020 (n = 1210), this study made it possible to analyze the organizational situation of this industry, the tourism performance of the organizations surveyed, their human resources concerns, their short- and medium-term development prospects, as well as the structural and organizational elements where the organizations are the most vulnerable. Overall, it can be seen that the outdoor sector, thanks to its 40 intrinsic characteristics, stands out very positively in this industry, in particular in contrast to organizations located in large urban centers that depend on clients from outside Quebec.
ABSTRACT
The aim of this study is to determine the motivation of high school students to participate in physical activity and their eating attitude levels during the COVID-19 period as well as to examine the relationship between the two variables. In addition, it was also determined whether the motivation for participate in physical activity and eating attitudes differ according to gender, weekly exercise, spending time with technology, family communication times, and participation in exercise during and before the pandemic. A total of 576 high school students, including 406 girls and 170 boys, participated in the study. "Motivation Scale for Participation in Physical Activity (MSPPA)", "Eating Attitude Test (EAT-40)" and "Personal Information Form (KBF)" were used as data collection tools. Data were evaluated using correlation, multiple linear regression, MANOVA and t-test analysis techniques. It was concluded that the motivation of the students to participate in physical activity was moderate, and they did not have eating disorders. It was observed that physical activity motivation did not predict eating attitude, but there were positive and low relationships between sub-factors in relational dimension. According to gender, it was determined that the eating attitudes of female students were more positive than male students. It has been found that the motivation to participate in physical activity is higher for those who exercise before and during the pandemic than those who do not. Consequently, it can be said that during the COVID-19 process, high school students' motivation to participate in physical activity is at a moderate level, and their eating attitudes are generally not at the level of behavioral disorders.
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In this paper has been proposed a methodology for ensuring the financial security of enterprises in the context of recession caused by the COVID-19 pandemic. Based on pre-crisis data related to the new coronavirus infection pandemic and multi-component modeling of the dynamics of industrial production in the Republic of Uzbekistan during the "corona crisis,"this study seeks to identify the dynamics of growth by economic activity type and recovery rate in order to identify areas of state support for industrial production. In this paper has been investigated issues of financial security management of textile enterprises. On the basis of secondary statistics, the growth of textile production in the regions of the Republic of Uzbekistan in 2008-2020 was analyzed and the factors influencing it were identified. By the author have been presented the main tasks and conditions for the financial security of enterprises, as well as developed scientific and practical recommendations for eliminating factors affecting the financial security of textile enterprises. © 2022 Owner/Author.
ABSTRACT
The Covid-19 pandemic forced the world population to incorporate prevention activities into their daily lives to preserve people's physical health. In Colombia, the national government, through resolutions and decrees, regulated quarantine and preventive isolation in order not to saturate health services and intensive care units, which were not prepared to respond to the disease. In this sense, this article analyzed the habits of physical activity, well-being, and quality of life in preventive isolation - Covid-19 in Bogota, Colombia. A cross-sectional descriptive quantitative study was conducted on a sample of 1,775 people with an average age of 43.5+or-25.5 years, of which 50.9% (n=903) corresponded to women and 49.1% (n=872) to men. It was found that due to the confinement the consumption of coffee and alcoholic beverages increased, as well as a decrease in physical activity. In addition, manifestations of anxiety, depression and feelings of loneliness were identified, which directly affected people's well-being and quality of life. It is expected that this type of research will contribute to the understanding of the impact of the contingency measures taken by the different nations to curb Covid-19 infections on people's health.
ABSTRACT
Some of the simplest affordances of study abroad became unavailable when students stayed stateside because of the pandemic-induced disruptions to international travel. These ranged from touring city and historical/cultural landmarks, having spontaneous and chance interactions with locals, participating in the performance of traditions and practices, visiting homes, engaging in "domestic" activities with host families and local peers, and developing a sense of community with other fellow students. This paper reports on three alternate, virtual cultural activities that were launched during the pandemic between a U.S. university and its study abroad partner institution in Morocco in order to help compensate for the health disruption. Survey responses, cultural products, and reflections from 118 participants were collected for this study over two Arabic summer intensive programs at the stateside university. The study explores the effectiveness of these activities in promoting intercultural competence and student engagement during this period and speculates on how they can be integrated into the regular programming post-pandemic in order to further enhance immersion.
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PurposeThis study aims to focus on the preparation and characterization of the silver nanowire (AgNWs), as well as their application as antimicrobial and antivirus activities either with incorporation on the waterborne coating formulation or on their own.Design/methodology/approachPrepared AgNWs are characterized by different analytical instruments, such as ultraviolet-visible spectroscope, scanning electron microscope and X-ray diffraction spectrometer. All the paint formulation's physical and mechanical qualities were tested using American Society for Testing and Materials, a worldwide standard test procedure. The biological activities of the prepared AgNWs and the waterborne coating based on AgNWs were investigated. And, their effects on pathogenic bacteria, antioxidants, antiviral activity and cytotoxicity were also investigated.FindingsThe obtained results of the physical and mechanical characteristics of the paint formulation demonstrated the formulations' greatest performance, as well as giving good scrub resistance and film durability. In the antimicrobial activity, the paint did not have any activity against bacterial pathogen, whereas the AgNWs and AgNWs with paint have similar activity against bacterial pathogen with inhibition zone range from 10 to 14 mm. The development of antioxidant and cytotoxicity activity of the paint incorporated with AgNWs were also observed. The cytopathic effects of herpes simplex virus type 1 (HSV-1) were reduced in all three investigated modes of action when compared to the positive control group (HSV-1-infected cells), suggesting that these compounds have promising antiviral activity against a wide range of viruses, including DNA and RNA viruses.Originality/valueThe new waterborne coating based on nanoparticles has the potential to be promising in the manufacturing and development of paints, allowing them to function to prevent the spread of microbial infection, which is exactly what the world requires at this time.
ABSTRACT
The pandemic of the coronavirus disease 2019 has shown weakness and threats in various fields of human activity. In turn, the World Health Organization has recommended different preventive measures to decrease the spreading of coronavirus. Nonetheless, the world community ought to be ready for worldwide pandemics in the closest future. One of the most productive approaches to prevent spreading the virus is still using a face mask. This case has required staff who would verify visitors in public areas to wear masks. The aim of this paper was to identify persons remotely who wore masks or not, and also inform the personnel about the status through the message queuing telemetry transport as soon as possible using the edge computing paradigm. To solve this problem, we proposed to use the Raspberry Pi with a camera as an edge device, as well as the TensorFlow framework for pre-processing data at the edge. The offered system is developed as a system that could be introduced into the entrance of public areas. Experimental results have shown that the proposed approach was able to optimize network traffic and detect persons without masks. This study can be applied to various closed and public areas for monitoring situations. © 2022 Copyright for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).
ABSTRACT
The COVID-19 pandemic had a significant impact on medical care and medical education in Peru. In response, the Peruvian American Medical Society (PAMS), a charitable medical organization based in the USA, pursued its medical and educational missions in Peru by adopting virtual learning technology. We developed closer collaborative relationships with several medical schools and the Peruvian Association of Medical Schools (ASPEFAM) while offering a faculty panel of twenty-four members to provide lectures and multidisciplinary webinars in Spanish. We conducted 19 webinars including COVID -19 and non-COVID-19 related topics that over the last two years attracted 14,489 participants from 23 countries. They were the foundation for twenty publications in Peruvian medical journals. Our clinical investigations competition was positively received as was our pilot project on research mentorship. The COVID -19 pandemic had a positive effect on the educational mission of PAMS in Peru.
ABSTRACT
This article is based on qualitative and quantitative data collected from teachers and pupils in Danish schools in June 2020, as schools reopened following closures in the spring due to the COVID-19 pandemic. It investigates the transformations in school life that took place in this period in response to strict official guidelines to prevent the spread of infection, transformations both in school learning environments and in teaching activities. Using factor and cluster analyses and logistic regression, it explores the relation between teaching environment and pupils' emotional, social, and academic wellbeing, identifying correlations between key factors in the environment and the three dimensions of wellbeing. The study contributes both to understanding and dealing with the crisis in which education systems in the Nordic countries have found themselves in and adds relevant knowledge on themes of importance for education in the future.
ABSTRACT
Outdoor Recreation (OR) provides the benefits of physical activity and traditional leisure placed in an outdoor environment. Motivation, self-efficacy, and autonomy can increase depending on the physical and social environment. This study explored the relationship between self-efficacy and autonomy on OR behaviors and identified barriers and facilitators to OR during the COVID-19 pandemic. Survey information was collected from 995 U.S. adults (93.6% white, 64.0% female) regarding OR behaviors, changes in OR during COVID-19, and OR self-perceptions. Significant positive correlations existed between autonomy and self-efficacy (r = 0.138, p < 0.01), and self-efficacy and pre/post pandemic OR behaviors 2020 (r = 0.158, p < 0.01), (r = 0.129, p < 0.01) respectively. Qualitative data implied barriers and facilitators to OR as: social, mental health, and increased or changed OR/physical activity. Implications from this research are beneficial to OR and health professionals to promote overall physical and mental well-being for OR participants.
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Understanding what factors play a role in people's decisions to travel during a pandemic is important to public health officials and to stakeholders in the travel and tourism industry in the United States (US) and worldwide. This study examines factors influencing people's decisions to cancel/postpone recreational travel within the US amidst the COVID-19 pandemic. Our conceptual framework extends the Expected Utility model, commonly used in economics to model decisions under risk and uncertainty, to incorporate subjective norms and perceived behavioral control from the Theory of Planned Behavior. Our results suggest that risk perceptions, subjective norms, and concerns over transmitting COVID-19 to others play a significant role in the decision to cancel and postpone recreational travel. Results also suggest that perceived behavioral control may be less relevant to travel decisions when traveling involves elevated health risks.
ABSTRACT
Closures of schools in the advent of COVID-19 all around the world have affected nearly about 87% of students in different aspects of life. The importance of school life and its impact on the social and psychological well-being of an adolescent has left a deep and evident impression. As per the Indian population statistics, we embrace the largest adolescent population in the world. The COVID-19 pandemic had a significant impact on the lives of millions around the world. The authors through an exhaustive survey specially designed to relate the present mental state and well-being have analyzed the critical phase. 315 participants that consisted of both males and females take up the survey. 'What we analyzed is the fact regarding the association between Stress anxiety and Depression among the Adolescent in Covid - 19 situation.' . © 2023 IEEE.
ABSTRACT
SARS-CoV-2 is a new threat to public health due to its increased transmissibility and immune evasion. Angiotensin-converting enzyme 2 (ACE2) plays a critical role in SARS-CoV-2 infection as its serve as the virus's major entry receptor in humans. Vaccines have been authorized for emergency use to control the current pandemic and they have greatly reduced the spread of SARS-CoV-2 and mortality rates, nevertheless this coronavirus has shown the ability to endure crucial mutations that increases its infectivity which makes it likely that the virus will continue to mutate and disseminate. There is a need to find and introduce alternative and effective methods of controlling SARS-CoV-2. Notably, low-level laser therapy (LLLT) is a method of exposing cells or tissue to low levels of red and near infrared light which has a high success rate for treatment of other ailments. The aim of the study is to determine for the first time, the effects of LLLT on SARS-CoV-2 infected HEK293/ACE2 cells and compare them to uninfected ones. Both infected and uninfected HEK293/ACE2 cells were irradiated at a wavelength of 640 nm, at different doses. Then, the effects of laser irradiation on the cells and the virus were evaluated using luciferase, cytotoxicity, and cell viability assays. Preliminary results showed that irradiated uninfected cells had no changes in cell viability and cytotoxicity, while there were changes in irradiated infected cells. In addition, laser irradiation caused cell membrane damage in infected cells. Lastly, uninfected irradiated cells showed no luciferase activity while laser irradiation reduced luciferase activity in infected cells. © 2023 SPIE.
ABSTRACT
The COVID-19 pandemic has influenced various aspects of people's lives;for instance, restrictions during the pandemic have forced people to think about sports participation and physical activity in new ways. There has been growing interest in technological interventions to support exercise-related behavioural changes in daily life;in particular, exergames designed to induce full-body movement offer alternatives to physical activity. Since Taiwan has a high rate of ownership of exergame-related equipment, it is worth examining players' perceptions of using exergames for exercise. This study utilised a Means-End Chain analysis with in-depth laddering interviews to investigate Taiwanese perceptions of certain attributes of exergames as most likely to produce desired consequences in accordance with their values. The findings provide researchers and practitioners interested in the use of technology for exercise with valuable implications of Means-End Chain theory and structuration theory and suggestions for exergame design and promotion.
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The COVID-19 pandemic has shifted many business activities to non-face-to-face activities, and videoconferencing has become a new paradigm. However, conference spaces isolated from surrounding interferences are not always readily available. People frequently participate in public places with unexpected crowds or acquaintances, such as cafés, living rooms, and shared offices. These environments have surrounding limitations that potentially cause challenges in speaking up during videoconferencing. To alleviate these issues and support the users in speaking-restrained spatial contexts, we propose a text-to-speech (TTS) speaking tool as a new speaking method to support active videoconferencing participation. We derived the possibility of a TTS speaking tool and investigated the empirical challenges and user expectations of a TTS speaking tool using a technology probe and participatory design methodology. Based on our findings, we discuss the need for a TTS speaking tool and suggest design considerations for its application in videoconferencing. © 2023 ACM.
ABSTRACT
This study aims to make an investigation on the relationship between ecotourism motivation (EM), satisfaction (SA), place attachment (PA), and environmentally responsible behavior intention (ER) based on the analysis of camping tourism andstudy the mediating roles of SA and PA in the relationship between EM and ER. A questionnaire-based survey was conducted on 400 camping tourists who visited the Yunnan Province of China within the last year. The distribution of survey questionnaires range from 12 February 2023–24 February 2023. The results reveal that EM positively influences SA, PA, and ER, whereas, although SA positively impacts PA, it does not significantly affect ER. In contrast, PA positively affects ER. Furthermore, PA has a positive mediating impact on the relationship between EM and ER, whereas, SA does not significantly mediate this relationship. Finally, SA and PA act as chain mediators between EM and ER. The findings contribute to the tourism literature by shedding light on the complex relationships between EM, SA, PA, and ER in the context of camping tourism, thereby, enhancing tourist satisfaction and promoting environmentally responsible behavior, thus, contributing to the growth of a sustainable camping industry.