New research finds seating assignments on airplanes can reduce the spread of COVID-19
2021-03-24
(Press-News.org) >
CATONSVILLE, MD, March 24, 2021 - COVID-19 has been shown to spread on airplanes by infected passengers, so minimizing the risk of secondary infections aboard aircraft may save lives. New research in the INFORMS journal Service Science uses two models to help solve the airplane seating assignment problem (ASAP). The models can lower the transmission risk of COVID-19 more so than the strategy of blocking the middle seats, given the same number of passengers.
"Blocking the middle seat on an airplane may provide limited benefit in reducing the risk of transmission of COVID-19. Rather, other health protocols are better supported at preventing the transmission of the virus," said Sheldon Jacobson, Founder Professor of computer science at the University of Illinois Urbana-Champaign.
The study, "Airplane Seating Assignment Problem," was conducted by Jacobson, John Pavlik and Ian Ludden, all from the University of Illinois Urbana-Champaign, alongside Edward Sewell from Southern Illinois University Edwardsville.
The researchers introduce two variations of a seating assignment model to optimize how each plane should seat passengers depending on the plane's size and how seats are distributed on the aircraft.
The two models are called vertex packing risk minimization (VPR) and risk-constrained vertex packing (RCV). To determine which to use to solve ASAP, you match the specific airplane being filled using the best-known disease transmission risks, then solve the instance to generate an optimal seating solution.
"Every seat on the airplane corresponds to a single vertex in the graph. Edges between vertices represent the risk of transmitting a disease between each pair of seats. If either seat in a pair is empty, then there is no risk of transmitting a disease, and hence VPR and RCV are closely related to the vertex packing problem," continued Jacobson.
"Given an undirected graph modeling an airplane seating assignment problem instance with appropriate risks on the edges, the solution to VPR is an optimal configuration of seats to minimize the risk of transmission for a fixed number of passengers on the airplane. Similarly, the solution to RCV is the maximum number of passengers and corresponding seat configuration given a maximum acceptable total risk of transmission."
INFORMATION:
About INFORMS and Service Science
INFORMS is the leading international association for operations research and analytics professionals. Service Science, one of 17 journals published by INFORMS, is a premier academic journal that covers state-of-the-art research, education, practice and breakthroughs in the service science industry that focus on people's satisfaction and success. More information is available at http://www.informs.org or @informs.
Contact:
Ashley Smith
443-757-3578
asmith@informs.org
ELSE PRESS RELEASES FROM THIS DATE:
2021-03-24
SARS-CoV-2, the virus responsible for the COVID-19 pandemic, arrived one year ago and turned our lives upside-down.
While worldwide vaccination programs are currently ongoing, we do not yet know for how long the vaccine will provide immune protection against infection, and if the currently approved vaccines can provide protection against the emerging virus variants.
In addition, it appears that vaccines cannot prevent illness for people who have already been infected. In contrast to vaccines, there are currently no effective drugs that act against the virus SARS-CoV-2.
New research by Associate Professor Jasmin Mecinovic and co-workers from the Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, now presents a compound that might provide a basis for the ...
2021-03-24
Decarbonizing the economy and achieving the transition from fossil fuels to renewable energies is one of the most urgent global challenges of the 21st century. Hydrogen can play a key role in this process as a promising climate-neutral energy vehicle. Yet, the so-called green hydrogen economy requires that hydrogen production be based exclusively on renewable energy. In addition, it should ideally not use expensive and rare metal catalysts, whose production has severe environmental consequences. To address this challenge, ITQB NOVA researchers Inês Cardoso Pereira and Mónica Martins are working on an innovative technology to produce hydrogen from light using non-photosynthetic microorganisms.
Hydrogen offers exciting new possibilities as an energy vehicle, ...
2021-03-24
The Event Horizon Telescope (EHT) collaboration, a multinational team of over 300 scientists including two astrophysicists from the University of the Witwatersrand (Wits University), has revealed today a new view of the massive object at the centre of the M87 galaxy: how it looks in polarised light.
This is the first time astronomers have been able to measure polarisation, a signature of magnetic fields, this close to the edge of a black hole. The observations are key to explaining how the M87 galaxy, located 55 million light-years away, is able to launch energetic jets from its core.
"We are now seeing the next crucial piece of evidence to understand how magnetic fields behave around black holes, and how activity in this very compact region of space can drive powerful ...
2021-03-24
The Event Horizon Telescope (EHT) collaboration, who produced the first ever image of a black hole, has today revealed a new view of the massive object at the centre of the Messier 87 (M87) galaxy: how it looks in polarised light. This is the first time astronomers have been able to measure polarisation, a signature of magnetic fields, this close to the edge of a black hole. The observations are key to explaining how the M87 galaxy, located 55 million light-years away, is able to launch energetic jets from its core.
"We are now seeing the next crucial piece of evidence to understand ...
2021-03-24
A new study from the University of Bergen (UiB) shows that the way young people view their bodies have a great impact on their BMI.
In a two-year follow up study among 1225 Norwegian adolescents in their early teens, professor Eivind Meland and his team examined how body mass index, self-esteem and self-rated health were mutually impacted and influenced by body dissatisfaction.
"We revealed that positive self-image and self-esteem protected against weight gain", professor emeritus Meland says.
The girls had in general lower body confidence than boys, the study shows.
Body dissatisfaction
The eager to be thinner, dieting, and wanting to change something with the body all impaired self-rated health ...
2021-03-24
A new study shows that when people replace their old couch with a new one that has no added flame retardants, levels of the harmful chemicals in household dust drop significantly. Replacing the foam inside the couch cushions is also just as effective. The findings confirm that choosing healthier furniture without flame retardants can make a big difference in people's--especially children's--everyday exposures to these toxic chemicals.
"We've long suspected that couches are a major source of toxic chemicals in dust. Now, for the first time, we have evidence demonstrating the positive impacts of replacing old furniture containing flame retardants," ...
2021-03-24
What is the world made of? This question, which goes back millennia, was revisited by theoretical physicist Steven Weinberg from the University of Texas in Austin, TX, USA in the first of an international seminar series, 'All Things EFT'. Weinberg's seminar has now been published as an article in the journal EPJ H.
And Weinberg is well placed to discuss both Effective Field Theories (EFTs) and the nature of the Universe, as he shared the 1979 Nobel Prize for Physics for developing a theory to unify the weak and electromagnetic interactions between elementary particles. This fed into the development of the ...
2021-03-24
Ruptures of the carotid artery (cervical artery dissection) are the most common cause of stroke in people under 50 years of age, with an annual incidence of 2-3 cases per 100,000 persons. Salicylic-acid preparations (acetylsalicylic acid: aspirin, Aspegic) and blood-thinning medication (anticoagulants) are used for treatment. The multicenter therapy study "Biomarkers and Antithrombotic Treatment in Cervical Artery Dissection (TREAT-CAD, NCT02046460)" investigated whether dissections - tears in the wall of vessels supplying blood to the brain - can be treated with aspirin or whether more complex blood thinning (anticoagulation) ...
2021-03-24
Copepods are tiny crustaceans about the size of a grain of rice, but they are one of the most important parts of the Earth's aquatic ecosystems. Their behavior and interaction with the environment, however, remains a relative mystery. Now, a recent paper published in the Journal of Experimental Biology sheds new light on how these miniature marvels move and cluster in the ocean.
Researchers from Bigelow Laboratory of Ocean Sciences and the Georgia Institute of Technology found that the copepods gather around small vortexes in the ocean, a finding which could have significant implications for the food web.
"We're getting at a mechanism that helps us understand how the ecosystem ...
2021-03-24
Chemists from RUDN University found out that fluorine and fluoroalkyl groups increase the efficiency of catalysts in metathesis reactions that are used in the pharmaceutical industry and polymer chemistry. The team also identified fluorine-containing compounds that can simplify the purification of the catalyst from the reaction product, making it reusable. The results of the study were published in the Russian Chemical Reviews journal.
Many medicinal drugs and polymers are based on olefins, organic compounds with a double bond between carbon atoms. To obtain useful substances from them, scientists used the metathesis reaction. In the course of metathesis, ...
LAST 30 PRESS RELEASES:
[Press-News.org] New research finds seating assignments on airplanes can reduce the spread of COVID-19