Results 51 to 60 of about 9,263,823 (399)
Numerical simulations of sunspots [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractThe origin, structure and evolution of sunspots are investigated using a numerical model. The compressible MHD equations are solved with physical parameter values that approximate the top layer of the solar convection zone. A three dimensional (3D) numerical code is used to solve the set of equations in cylindrical geometry, with the numerical ...
Alistair Rucklidge +2 more
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Numerical simulation of electrocardiograms
, 2012 This chapter presents a concise overview of various mathematical and numerical problems raised by the simulation of electrocardiograms (ECGs). A model for the propagation of the electrical activation in the heart and in the torso is proposed. Some of its mathematical properties are analyzed.
Boulakia, Muriel +3 more
openaire +6 more sources
Numerical Simulation of Baroclinic Jovian Vortices [PDF]
, 1994 We examine the evolution of baroclinic vortices in a time-dependent, nonlinear numerical model of a Jovian atmosphere. The model uses a normal-mode expansion in the vertical, using the barotropic and first two baroclinic modes.
GRAINGER, R +4 more
core +3 more sources
Role of vector resistance and grafting infection in Huanglongbing control models
Infectious Disease Modelling, 2023 Citrus huanglongbing (HLB) is one of the most devastating diseases affecting citrus almost worldwide due to the lack of a cure. To better understand the impact of insecticide resistance and grafting infection on the spread of HLB disease, a vector-borne ...
Shuimei Tang +3 more
doaj
Improved Bayesian Network-Based Risk Model and Its Application in Disaster Risk Assessment
International Journal of Disaster Risk Science, 2018 The application of Bayesian network (BN) theory in risk assessment is an emerging trend. But in cases where data are incomplete and variables are mutually related, its application is restricted. To overcome these problems, an improved BN assessment model
Ming Li, Mei Hong, Ren Zhang
doaj +1 more source
A fast direct numerical simulation method for characterising hydraulic roughness [PDF]
Journal of Fluid Mechanics, 2015 We describe a fast direct numerical simulation (DNS) method that promises to directly characterise the hydraulic roughness of any given rough surface, from the hydraulically smooth to the fully rough regime.
D. Chung +4 more
semanticscholar +1 more source
Threshold Dynamics of a Huanglongbing Model with Logistic Growth in Periodic Environments
Abstract and Applied Analysis, 2014 We analyze the impact of seasonal activity of psyllid on the dynamics of Huanglongbing (HLB) infection. A new model about HLB transmission with Logistic growth in psyllid insect vectors and periodic coefficients has been investigated.
Jianping Wang +3 more
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Plants, 2023 Ageratum conyzoides (A. conyzoides) is commonly found or intentionally planted in citrus orchards due to its ability to provide habitat and breeding grounds for the natural enemies of citrus pests. This study aims to expand from a switching Huanglongbing
Ying Wang +3 more
doaj +1 more source
Numerical simulation of "an American haboob" [PDF]
Atmospheric Chemistry and Physics, 2013 Abstract. A dust storm of fearful proportions hit Phoenix in the early evening hours of 5 July 2011. This storm, an American haboob, was predicted hours in advance because numerical, land–atmosphere modeling, computing power and remote sensing of dust events have improved greatly over the past decade.
Matthew R. Kumjian +14 more
openaire +6 more sources
Mathematical and Computational Applications, 2020 In this paper, we introduce a novel localized collocation solver for two-dimensional (2D) phononic crystal analysis. In the proposed collocation solver, the displacement at each node is expressed as a linear combination of T-complete functions in each ...
Zhuo-Jia Fu +3 more
doaj +1 more source