scholarly journals How a school holiday led to persistent COVID-19 outbreaks in Europe

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Björn Thor Arnarson
Keyword(s):  
Herd Immunity ◽  
European Regions ◽  
Large Outbreak ◽  
Winter School ◽  
Using Data ◽  
The Impact ◽  
Over Time

AbstractThis paper investigates the role of large outbreaks on the persistence of Covid-19 over time. Using data from 650 European regions in 14 countries, I first show that winter school holidays in late February/early March 2020 (weeks 8, 9 and 10) led to large regional outbreaks of Covid-19 in the spring with the spread being 60% and up-to over 90% higher compared to regions with earlier school holidays. While the impact of these initial large outbreaks fades away over the summer months, it systematically reappears from the fall as regions with school holidays in weeks 8, 9 and 10 had 30–70% higher spread. This suggests that following a large outbreak, there is a strong element of underlying (latent) regional persistence of Covid-19. The strong degree of persistence highlights the long-term benefits of effective (initial) containment policies, as once a large outbreak has occurred, Covid-19 persists. This result emphasizes the need for vaccinations against Covid-19 in regions that have recently experienced large outbreaks but are well below herd-immunity, to avoid a new surge of cases.

scholarly journals The Impact of Exploitation and Exploration on Export Sales Growth: The Moderating Role of Domestic and International Collaborations

2020 ◽  
Vol 28 (4) ◽  
pp. 1-20
Author(s):  
Carlos M.P. Sousa ◽  
Rebecca Yu Li ◽  
Xinming He
Keyword(s):  
Time Lags ◽  
Sales Growth ◽  
Short Term ◽  
International Collaborations ◽  
Exploitation And Exploration ◽  
The Impact ◽  
Moderating Role ◽  
Over Time

This study examines the short- and long-term implications of the impact of exploitation and exploration on export sales growth. It also explores the moderating role of external collaborations by differentiating between domestic collaborations and international collaborations. The authors tested their conceptual model with data from the U.K. Community Innovation Survey (2010–2016). Using different time lags for exploitation and exploration, the findings indicate that the impact varies over time. Specifically, they reveal that the effect of exploitation is negative in the long term but positive in the short term, while exploration has no significant effect in the short term but a positive influence on export sales growth in the long term. Similarly, the moderating effect of domestic and international collaborations has been found to vary over time. The authors conclude with a discussion of the theoretical and practical implications.

Covid-19 In Man: A Very Dangerous Affair.

2021 ◽  
Vol 21 ◽  
Author(s):  
Giuseppe Lisco ◽  
Vito A. Giagulli ◽  
Giovanni De Pergola ◽  
Anna De Tullio ◽  
Edoardo Guastamacchia ◽  
...  
Keyword(s):  
Poor Prognosis ◽  
Metabolic Diseases ◽  
Systemic Disease ◽  
Public Health Issue ◽  
Immune System Dysfunction ◽  
Data Support ◽  
Systemic Spread ◽  
The Impact

Background: The novel pandemic of Coronavirus disease 2019 (COVID-19) has becoming a public health issue since March 2020 considering that more than 30 million people were found to be infected worldwide. Particularly, recent evidences suggested that men may be considered as at higher risk of poor prognosis or death once the infection occurred and concerns surfaced in regard of the risk of a possible testicular injury due to SARS-CoV-2 infection. Results: Several data support the existence of a bivalent role of testosterone (T) in driving poor prognosis in patients with COVID-19. On one hand, this is attributable to the fact that T may facilitate SARS-CoV-2 entry in human cells by means of an enhanced expression of transmembrane serine-protease 2 (TMPRSS2) and angiotensin-converting enzyme 2 (ACE2). At the same time, younger man with normal testicular function compared to women of similar age are prone to develop a blunted immune response against SARS-CoV-2, being exposed to less viral clearance and more viral shedding and systemic spread of the disease. Conversely, low levels of serum T observed in hypogonadal men predispose them to a greater background systemic inflammation, cardiovascular and metabolic diseases, and immune system dysfunction, hence driving harmful consequences once SARS-CoV-2 infection occurred. Finally, SARS-CoV-2, as a systemic disease, may also affect testicles with possible concerns for current and future testicular efficiency. Preliminary data suggested that SARS-CoV-2 genome is not normally found in gonads and gametes, therefore sex transmission could be excluded as a possible way to spread the COVID-19. Conclusion: Most data support a role of T as a bivalent risk factor for poor prognosis (high/normal in younger; lower in elderly) in COVID-19. However, the impact of medical treatment aimed to modify T homeostasis for improving the prognosis of affected patients is unknown in this clinical setting. In addition, testicular damage may be a harmful consequence of the infection even in case it occurred asymptomatically but no long-term evidences are currently available to confirm and quantify this phenomenon. Different authors excluded the presence of SARS-CoV-2 in sperm and oocytes, thus limiting worries about both a potential sexual and gamete-to-embryos transmission of COVID-19. Despite these evidence, long-term and well-designed studies are needed to clarify these issues.

scholarly journals Long-term changes in the plant ecology of an African savanna landscape and the implications for ecosystem theory and conservation management

2021 ◽  
Vol 10 (1) ◽  
Author(s):  
David Western ◽  
Victor N. Mose ◽  
David Maitumo ◽  
Caroline Mburu
Keyword(s):  
Human Impact ◽  
National Parks ◽  
Conservation Management ◽  
Plant Ecology ◽  
Ecological Resilience ◽  
Pasture Production ◽  
Ecosystem Theory ◽  
The Impact

Abstract Background Studies of the African savannas have used national parks to test ecological theories of natural ecosystems, including equilibrium, non-equilibrium, complex adaptive systems, and the role of top-down and bottom-up physical and biotic forces. Most such studies have excluded the impact of pastoralists in shaping grassland ecosystems and, over the last half century, the growing human impact on the world’s rangelands. The mounting human impact calls for selecting indicators and integrated monitoring methods able to track ecosystem changes and the role of natural and human agencies. Our study draws on five decades of monitoring the Amboseli landscape in southern Kenya to document the declining role of natural agencies in shaping plant ecology with rising human impact. Results We show that plant diversity and productivity have declined, biomass turnover has increased in response to a downsizing of mean plant size, and that ecological resilience has declined with the rising probability of extreme shortfalls in pasture production. The signature of rainfall and physical agencies in driving ecosystem properties has decreased sharply with growing human impact. We compare the Amboseli findings to the long-term studies of Kruger and Serengeti national parks to show that the human influence, whether by design or default, is increasingly shaping the ecology of savanna ecosystems. We look at the findings in the larger perspective of human impact on African grasslands and the world rangelands, in general, and discuss the implications for ecosystem theory and conservation policy and management. Conclusions The Amboseli study shows the value of using long-term integrated ecological monitoring to track the spatial and temporal changes in the species composition, structure, and function of rangeland ecosystems and the role of natural and human agencies in the process of change. The study echoes the widespread changes underway across African savannas and world’s rangelands, concluding that some level of ecosystem management is needed to prevent land degradation and the erosion of ecological function, services, and resilience. Despite the weak application of ecological theory to conservation management, a plant trait-based approach is shown to be useful in explaining the macroecological changes underway.

The Role of UBI in Mitigating the Effects of Psychosocial Stressors: A Review and Proposal

2021 ◽  
pp. 003329412110051
Author(s):  
Rashmi Gupta ◽  
Jemima Jacob ◽  
Gaurav Bansal
Keyword(s):  
Role Stress ◽  
Psychosocial Stressors ◽  
Basic Income ◽  
Economic Stability ◽  
The Past ◽  
Individual Outcomes ◽  
Long Term Impact ◽  
The Impact

Psychosocial stressors and social disadvantages contribute to inequalities in opportunities and outcomes. In the current paper, we use an epidemiological perspective and highlight the role stress plays on individuals by reviewing the outcomes of major stressors such as poverty and unemployment. We further analyzed the psychological and physical cost of these stressors and their long-term impact. We examined the role of universal basic income and closely looked at income experiments that were implemented in the past, in terms of their effectiveness in enhancing the community as well as individual outcomes and propose the UBI as a tool for alleviating the impact of these stressors. At a time when a major pandemic (e.g., COVID-19) threatens economic stability and health globally, we believe the UBI is relevant now, more than ever.

scholarly journals Camp stability predicts patterns of hunter–gatherer cooperation

2016 ◽  
Vol 3 (7) ◽  
pp. 160131 ◽  
Author(s):  
Daniel Smith ◽  
Mark Dyble ◽  
James Thompson ◽  
Katie Major ◽  
Abigail E. Page ◽  
...  
Keyword(s):  
Real World ◽  
Ecological Context ◽  
Hunter Gatherers ◽  
Ecological Conditions ◽  
Resource Transfers ◽  
Experimental Games ◽  
Using Data ◽  
Over Time ◽  
Do So

Humans regularly cooperate with non-kin, which has been theorized to require reciprocity between repeatedly interacting and trusting individuals. However, the role of repeated interactions has not previously been demonstrated in explaining real-world patterns of hunter–gatherer cooperation. Here we explore cooperation among the Agta, a population of Filipino hunter–gatherers, using data from both actual resource transfers and two experimental games across multiple camps. Patterns of cooperation vary greatly between camps and depend on socio-ecological context. Stable camps (with fewer changes in membership over time) were associated with greater reciprocal sharing, indicating that an increased likelihood of future interactions facilitates reciprocity. This is the first study reporting an association between reciprocal cooperation and hunter–gatherer band stability. Under conditions of low camp stability individuals still acquire resources from others, but do so via demand sharing (taking from others), rather than based on reciprocal considerations. Hunter–gatherer cooperation may either be characterized as reciprocity or demand sharing depending on socio-ecological conditions.

Gender, mobility and contact

2021 ◽  
Vol 7 (2) ◽  
pp. 142-167
Author(s):  
Catherine E. Travis ◽  
Inas Ghina
Keyword(s):  
Older Women ◽  
High Mobility ◽  
Spontaneous Speech ◽  
Social Changes ◽  
Change Over Time ◽  
Aceh Province ◽  
Rural Variety ◽  
The Impact ◽  
Over Time

Abstract We examine variation in a rural variety of Acehnese spoken in Aceh Province, to better understand the impact of long-term contact with Indonesian and increasing urbanization. The Great Aceh variety is characterized by variable realization of word-final (t) as a dental vs. glottal stop. Analyses of over 2,000 tokens of this variable from a corpus of spontaneous speech from 35 speakers indicate that the variability is relatively stable among men, and among women of high mobility, measured in terms of education, occupation, and time spent outside Great Aceh. Women with low mobility produce the lowest rates of [t̪], and in this group we observe a higher rate of [t̪] by younger than older women, suggesting change over time. We thus find both stability – among those who have long enjoyed high levels of mobility – and change – among those most affected by recent social changes, namely low-mobility women.

The Sexual Experience of Married Middle-Aged Women as a Source of Mental Wellbeing: Perceptions, Challenges and Coping Mechanisms

2021 ◽  
Vol 30 (1) ◽  
pp. 181-203
Author(s):  
Tal Braverman-Uriel ◽  
Tal Litvak-Hirsch
Keyword(s):  
Quantitative Research ◽  
Sexual Experience ◽  
Women's Leadership ◽  
Mental Wellbeing ◽  
Structured Interviews ◽  
Significant Development ◽  
And Coping ◽  
The Impact

The impact of sexuality on mental wellbeing in women in long-term relationships has only been partially investigated. Emphasis has been on quantitative research studies that do not capture the breadth of the field. The present study looked at how and to what extent women maintain sexual desire in long-term relationships, and how sexuality affects their mental wellbeing. The study used a qualitative narrative approach and included semi-structured interviews with approximately 20 Israeli women aged 40–55 from similar socioeconomic backgrounds and in longstanding, permanent relationships. The findings indicate significant development over the years in the perception of the role of sexuality and its impact on mental wellbeing. The path to good sexuality can and should follow women’s leadership and initiative. Such women have the desire to make an impact, willingness to make an effort, and even an actual ability to exert influence. The interviewees’ tools, strategies, insights and ways of coping can serve as models for other women seeking better sexuality in a long-term relationship.

scholarly journals Has erosion globally increased? Long-term erosion rates as a function of climate derived from the impact crater inventory

2018 ◽  
Author(s):  
Stefan Hergarten ◽  
Thomas Kenkmann
Keyword(s):  
Time Scale ◽  
Impact Crater ◽  
Regional Effect ◽  
Tropical Zone ◽  
Erosion Rates ◽  
Continental Scale ◽  
River Loads ◽  
The Impact

Abstract. Worldwide erosion rates seem to have increased strongly since the beginning of the Quaternary, but there is still discussion about the role of glaciation as a potential driver and even whether the increase is real at all or an artefact due to losses in the long-term sedimentary record. In this study we derive estimates of average erosion rates on the time scale of some tens of million years from the terrestrial impact crater inventory. This approach is completely independent from all other methods to infer erosion rates such as river loads, preserved sediments, cosmogenic nuclides and thermochronometry. Our approach yields average erosion rates as a function of present-day topography and climate. The results confirm that topography accounts for the main part of the huge variation of erosion on Earth, but also identifies a significant systematic dependence on climate in contrast to several previous studies. We found a fivefold increase in erosional efficacy from the cold regimes to the tropical zone and that temperate and arid climates are very similar in this context. Combining our results to a worldwide mean erosion rate we found that erosion rates on the time scale of some tens of million years are at least as high as present-day rates and suggest that glaciation has a rather regional effect with a limited impact at the continental scale.

Mending Broken Hearts

2012 ◽  
Vol 53 (1) ◽  
pp. 33-49 ◽  
Author(s):  
Ellen L. Idler ◽  
David A. Boulifard ◽  
Richard J. Contrada
Keyword(s):  
Medical Records ◽  
Lower Risk ◽  
Adult Mortality ◽  
Men And Women ◽  
Never Married ◽  
The Social ◽  
Using Data ◽  
Long Term Mortality

Marriage has long been linked to lower risk for adult mortality in population and clinical studies. In a regional sample of patients ( n = 569) undergoing cardiac surgery, we compared 5-year hazards of mortality for married persons with those of widowed, separated or divorced, and never married persons using data from medical records and psychosocial interviews. After adjusting for demographics and pre- and postsurgical health, unmarried persons had 1.90 times the hazard of mortality of married persons; the disaggregated widowed, never married, and divorced or separated groups had similar hazards, as did men and women. The adjusted hazard for immediate postsurgical mortality was 3.33; the adjusted hazard for long-term mortality was 1.71, and this was mediated by married persons’ lower smoking rates. The findings underscore the role of spouses (both male and female) in caregiving during health crises and the social control of health behaviors.

scholarly journals Environment and Potential Affecting Investment Decision for Accommodation Business: Case of Less Visited Area in Samut Songkhram and Phatthalung Province

2021 ◽  
Vol 58 (2) ◽  
pp. 1706-1717
Author(s):  
Krisada Sungkhamanee, Piyadhida Sungkhamanee
Keyword(s):  
Financial Literacy ◽  
Investment Decision ◽  
Investment Decisions ◽  
Business Case ◽  
Potential Factors ◽  
Short Term Investment ◽  
The Impact ◽  
Moderating Role

Investment decisions have great importance in different sectors of various countries and these decisions are the basis on which the outcomes of the investments are based. However, there might be certain factors that might lead to the incorrect long term and short term investment decisions. In this regard, the current study has been conducted with the core motive to explore the impact casted by the environment and potential factors i.e. salience and overconfidence on the long term investment decisions for accommodation business along with the moderation of a variable i.e. financial literacy. To fulfill this objective, the researcher has collected data from the investors of accommodation businesses in Thailand. The collected data has been subjected to different statistical techniques and tools for analysis purpose and the results have been obtained. The results obtained by the analysis of the collected data indicate that salience and overconfidence have significant impact on the long term investment decision. In addition, the moderating role of financial literacy has also been found as significant in the study. The results suggest that the investors of the accommodation business must consider the aspects of salience and overconfidence before taking any long term investment decision to avoid failure of the investment decision.    

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