Scientists modified the existing SIR class pandemic prediction model. The model becomes more accurate, as the reduction of individuals in contact during the pandemic is objectively present in society. Moreover, the modification creates the possibility for scenario modelling.
CATONSVILLE, MD, February 25, 2021 - Short notice versus no advance notice makes a huge difference when it comes to employee scheduling in the restaurant industry. New research in the INFORMS journal Management Science finds checks for parties handled by servers who were asked (with no advance notice) to stay longer than their scheduled shift dropped by 4.4%, on average.
According to Childs' team's study, while a mosquito ingests the parasite in a "blood meal" by biting an infected person, it typically takes about 10 to 14 days -- known as the "extrinsic incubation period" or EIP -- until the parasites appear in the mosquito's salivary glands where it can then be transmitted to another human.
A team of researchers concludes that a game-theory approach may offer new insights into both the spread and disruption of viruses, such as SARS-CoV-2. Its work applies a "signaling game" to an analysis of cellular processes in illuminating molecular behavior.
Astronomers have tested a method for reconstructing the state of the early Universe by applying it to 4000 simulated universes using the ATERUI II supercomputer at the National Astronomical Observatory of Japan (NAOJ). They found that together with new observations the method can set better constraints on inflation, one of the most enigmatic events in the history of the Universe. The method can shorten the observation time required to distinguish between various inflation theories.
Policymakers at all levels of government are racing to vaccinate hundreds of millions of people to save lives and blunt the deadly COVID-19 pandemic. New research published in the INFORMS Journal on Applied Analytics provides a simulated model for drive-through clinics that can be used for mass COVID-19 vaccinations based on the successful use of such a clinic to address H1N1.
A research professor gives a "shout out" to comedian Stephen Colbert. His motivation? Colbert previously referred to mathematical equations as the devil's sentences and an unnatural commingling of letters and numbers - the worst being the quadratic equation - an infernal salad of numbers, letters and symbols. In response, the professor suggests that mathematics education needs to be enlivened so that students will recognize that this discipline is not merely a necessary evil, but a vibrant, exciting and fascinating subject.
Researchers from Skoltech have surveyed the newest known 30-meter deep gas blowout crater on the Yamal Peninsula, which formed in the summer of 2020. They piloted the drone used for crater surveillance; that was the first time a drone flew inside the crater for "underground aerial survey" 10 to 15 meters below ground, running the risk of losing the aircraft.
Researchers from the University of Copenhagen have developed an algorithm that can identify patients who may have been wrongly diagnosed. With the help of digital disease history, the algorithm is able to register disease trajectories that differ so much from normal trajectories that there may be a misdiagnosis. The algorithm has been developed on the basis of data from several hundreds of thousands of COPD patients.
More than one-third of the Corn Belt in the Midwest - nearly 30 million acres - has completely lost its carbon-rich topsoil, according to University of Massachusetts Amherst research that indicates the U.S. Department of Agriculture has significantly underestimated the true magnitude of farmland erosion.