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ScienceDaily: Science & Society News |
| Posted: 20 Oct 2021 12:04 PM PDT A new analysis spanning 10,000 years of history and ten major world regions has identified world population size, major technological advances, and geographical connectivity as key drivers of the evolution of military technology prior to the Industrial Revolution. |
| COVID-19 vaccination strategies: When is one dose better than two? Posted: 19 Oct 2021 09:01 AM PDT While most of the COVID-19 vaccines are designed as a two-dose regimen, some countries have prioritized vaccinating as many people as possible with a single dose before giving out an additional dose. In a new study, researchers illustrate the conditions under which a "prime first" vaccine campaign is most effective at stopping the spread of the COVID-19 virus. The team found the vaccine waning rate to be a critically important factor in the decision. |
| Simulation illustrates how COVID-19 social distancing creates pedestrian 'traffic jams' Posted: 19 Oct 2021 09:01 AM PDT Researchers examine the dynamics of social distancing practices, common defense against the spread of COVID-19, through the lens of particle-based flow simulations. The study models social distance as the distance at which particles, representing pedestrians, repel fellow particles and sheds light on the relationship between social distancing and pedestrian flow dynamics in corridors by illustrating how adherence to social distancing protocols affects two-way pedestrian movement in a shared space. |
| Targeted interventions to contain pandemics, minimize societal disruption Posted: 19 Oct 2021 09:01 AM PDT Nonpharmaceutical interventions, such as isolation, quarantines, and lockdowns, have been implemented in an effort to contain the pandemic, but these are often disruptive and costly. In a new article, researchers identify new and sustainable interventions to contain outbreaks while minimizing the economic and social costs. They built a data-driven mobility model to simulate COVID-19 spreading in Hong Kong, by combining synthetic population, human behavior patterns, and a viral transmission model, and found that by controlling a small percentage of grids, the virus could be largely contained. |
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