Zobrazeno 1 - 10
of 137
pro vyhledávání: '"Stockie, John M."'
We implement a data assimilation framework for integrating ice surface and terminus position observations into a numerical ice-flow model. The model uses the well-known shallow shelf approximation (SSA) coupled to a level set method to capture ice mo
Externí odkaz:
http://arxiv.org/abs/2201.12235
Autor:
Zarrinderakht, Maryam, Konrad, Isabell, Wilmot, Timothy R., Perkins, Timothy D., Berg, Abby K. van den, Stockie, John M.
Sap exudation is the process whereby trees such as sugar (Acer saccharum) and red maple (Acer rubrum) generate unusually high positive stem pressure in response to repeated cycles of freeze and thaw. This elevated xylem pressure permits the sap to be
Externí odkaz:
http://arxiv.org/abs/2106.02802
We present a question bank consisting of over 250 multiple-choice and true-false questions covering a broad range of material typically taught in an introductory undergraduate course in numerical analysis or scientific computing. The questions are id
Externí odkaz:
http://arxiv.org/abs/2005.12837
Publikováno v:
In Journal of Computational Physics 1 February 2023 474
Akademický článek
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Publikováno v:
Pure and Applied Geophysics 178(3):757-776, 2021
We present a cost-effective method for model calibration and solution of source inversion problems in atmospheric dispersion modelling. We use Gaussian process emulations of atmospheric dispersion models within a Bayesian framework for solution of in
Externí odkaz:
http://arxiv.org/abs/1806.05744
Publikováno v:
SIAM Journal on Applied Mathematics 78(4):2028-2056, 2018
We develop a 3D porous medium model for sap flow within a tree stem, which consists of a nonlinear parabolic partial differential equation with a suitable transpiration source term. Using an asymptotic analysis, we derive approximate series solutions
Externí odkaz:
http://arxiv.org/abs/1706.05557
Publikováno v:
IMA Journal of Applied Mathematics, 82(4):726-762, 2017
The study of tree sap exudation, in which a (leafless) tree generates elevated stem pressure in response to repeated daily freeze-thaw cycles, gives rise to an interesting multi-scale problem involving heat and multiphase liquid/gas transport. The pr
Externí odkaz:
http://arxiv.org/abs/1610.09796
Autor:
Hosseini, Bamdad, Stockie, John M.
Publikováno v:
Computers & Fluids, 154:27-43, 2017
We propose a numerical algorithm for solving the atmospheric dispersion problem with elevated point sources and ground-level deposition. The problem is modelled by the 3D advection-diffusion equation with delta-distribution source terms, as well as h
Externí odkaz:
http://arxiv.org/abs/1607.03518
Autor:
Hosseini, Bamdad, Stockie, John M.
Publikováno v:
Atmospheric Environment, 141:122-138, 2016
A new method is proposed for estimating the rate of fugitive emissions of particulate matter from multiple time-dependent sources via measurements of deposition and concentration. We cast this source inversion problem within the Bayesian framework, a
Externí odkaz:
http://arxiv.org/abs/1602.09053