Results 51 to 60 of about 96,285 (183)

Testing Modeling Assumptions in the West Africa Ebola Outbreak [PDF]

open access: yes, 2016
The Ebola virus in West Africa has infected almost 30,000 and killed over 11,000 people. Recent models of Ebola Virus Disease (EVD) have often made assumptions about how the disease spreads, such as uniform transmissibility and homogeneous mixing within ...
Burghardt, Keith   +5 more
core   +3 more sources

Country differences in transmissibility, age distribution and case-fatality of SARS-CoV-2: a global ecological analysis

open access: yesInternational Journal of Infectious Diseases, 2022
Objectives The first COVID-19 pandemic waves in many low-income countries appeared milder than initially forecasted. We conducted a country-level ecological study to describe patterns in key SARS-CoV-2 outcomes by country and region and explore ...
Caroline Favas   +4 more
doaj   +1 more source

Realistic assumptions about spatial locations and clustering of premises matter for models of foot-and-mouth disease spread in the United States [PDF]

open access: yes, 2020
Spatially explicit livestock disease models require demographic data for individual farms or premises. In the U.S., demographic data are only available aggregated at county or coarser scales, so disease models must rely on assumptions about how ...
Burdett, Christopher L.   +8 more
core   +1 more source

Design, Experiment, and Improvement of a Quasi-Zero-Stiffness Vibration Isolation System

open access: yesApplied Sciences, 2020
This paper proposes a new kind of quasi-zero-stiffness (QZS) isolation system that has the property of low-dynamic but high-static stiffness. The negative stiffness was produced using two magnetic rings, the magnetization of which is axial.
Shuai Wang   +4 more
doaj   +1 more source

Epidemics in Networks of Spatially Correlated Three-dimensional Root Branching Structures

open access: yes, 2011
Using digitized images of the three-dimensional, branching structures for root systems of bean seedlings, together with analytical and numerical methods that map a common 'SIR' epidemiological model onto the bond percolation problem, we show how the ...
C. A. Gilligan   +14 more
core   +2 more sources

Development of a vibration isolation system using an air suspension with automatic damping adjustment mechanism

open access: yesNihon Kikai Gakkai ronbunshu, 2023
In this study, we develop a vibration isolation system using an air suspension with a variable length slit restriction, clarify its dynamic characteristics and build a system that automatically adjusts an equivalent damping coefficient and an equilibrium
Yuki TAKANAMI   +2 more
doaj   +1 more source

The Effects of Evolutionary Adaptations on Spreading Processes in Complex Networks

open access: yes, 2019
A common theme among the proposed models for network epidemics is the assumption that the propagating object, i.e., a virus or a piece of information, is transferred across the nodes without going through any modification or evolution.
Carley, Kathleen M.   +4 more
core   +1 more source

Hemagglutinin Stability and Its Impact on Influenza A Virus Infectivity, Pathogenicity, and Transmissibility in Avians, Mice, Swine, Seals, Ferrets, and Humans

open access: yesViruses, 2021
Genetically diverse influenza A viruses (IAVs) circulate in wild aquatic birds. From this reservoir, IAVs sporadically cause outbreaks, epidemics, and pandemics in wild and domestic avians, wild land and sea mammals, horses, canines, felines, swine ...
Charles J. Russell
doaj   +1 more source

Lost in transmission…? [PDF]

open access: yesPhilosophical Transactions of the Royal Society B: Biological Sciences, 2017
Parasites and pathogens (hereafter referred to collectively as parasites) can have devastating consequences for the individuals they infect, with Ebola and Zika being (at the time of writing) only the most recent examples in a very long list.
Joanne Lello, Andy Fenton
openaire   +5 more sources

Highly Pathogenic Avian Flu A(H5N1): State of Affairs in 2009–2012 and Forecast of Its Pandemic Potential

open access: yesПроблемы особо опасных инфекций, 2013
Avian flu is an infectious viral disease in birds that still retains its positions in some parts of Asia and Africa. This review contains summarization and analysis of facts regarding the current situation on highly pathogenic avian flu A-type subtype ...
A. M. Shestopalov   +5 more
doaj   +1 more source

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