Results 11 to 20 of about 571,701 (244)
A generalized differential equation compartmental model of infectious disease transmission
Infectious Disease Modelling, 2021 For decades, mathematical models of disease transmission have provided researchers and public health officials with critical insights into the progression, control, and prevention of disease spread. Of these models, one of the most fundamental is the SIR
Scott Greenhalgh, Carly Rozins
doaj +1 more source
Alexandria Engineering Journal, 2021 In this paper, we present a numerical scheme and mathematical analysis for the famous three-dimensional quadratic autonomous self-govern system that happens to be chaotic with the coexistence of multi-scroll attractors.
D. Mathale +2 more
doaj +1 more source
Task-Driven Adaptive Statistical Compressive Sensing of Gaussian Mixture Models [PDF]
, 2012 A framework for adaptive and non-adaptive statistical compressive sensing is developed, where a statistical model replaces the standard sparsity model of classical compressive sensing.
Carin, Lawrence +3 more
core +3 more sources
Age- and bite-structured models for vector-borne diseases
Epidemics, 2015 The biology and behaviour of biting insects is a vitally important aspect in the spread of vector-borne diseases. This paper aims to determine, through the use of mathematical models, what effect incorporating vector senescence and realistic feeding ...
K.S. Rock, D.A. Wood, M.J. Keeling
doaj +1 more source
Dynamics of COVID-19 epidemics: SEIR models underestimate peak infection rates and overestimate epidemic duration [PDF]
, 2020 Compartment models of infectious diseases, such as SEIR, are being used extensively to model the COVID-19 epidemic. Transitions between compartments are modelled either as instantaneous rates in differential equations, or as transition probabilities in ...
Grant, Alastair
core +1 more source
Coupling Nonlinear Sigma-Matter to Yang-Mills Fields: Symmetry Breaking Patterns [PDF]
, 2008 We extend the traditional formulation of Gauge Field Theory by incorporating the (non-Abelian) gauge group parameters (traditionally simple spectators) as new dynamical (nonlinear-sigma-model-type) fields.
Aldaya V +9 more
core +5 more sources
The Rate-Controlled Constrained-Equilibrium Approach to Far-From-Local-Equilibrium Thermodynamics
Entropy, 2012 The Rate-Controlled Constrained-Equilibrium (RCCE) method for the description of the time-dependent behavior of dynamical systems in non-equilibrium states is a general, effective, physically based method for model order reduction that was originally ...
Hameed Metghalchi +3 more
doaj +1 more source
Eulerian-Lagrangian Analysis of Multiphase Flow in Urea Prilling Process with Phase Changing
Chemical Engineering Transactions, 2013 The objective of this work is the mathematical formulation of a prilling tower taking into account the solidification of the urea droplets, calculated by a shrinking unsolidified core model. The multiphase gas- liquid flow was modelled using the Eulerian-
G.A.N. Ricardo +3 more
doaj +1 more source
Typicality vs. probability in trajectory-based formulations of quantum mechanics [PDF]
, 2007 Bohmian mechanics represents the universe as a set of paths with a probability measure defined on it. The way in which a mathematical model of this kind can explain the observed phenomena of the universe is examined in general.
Bruno Galvan +16 more
core +1 more source
European Physical Journal C: Particles and Fields, 2022 This work belongs to the context of the standard-model extension, in which a Lorentz symmetry violation is induced by a bumblebee field as it acquires a nonzero vacuum expectation value.
F. P. Poulis, M. A. C. Soares
doaj +1 more source