Zobrazeno 1 - 10
of 64
pro vyhledávání: '"Isaac, Tobin"'
Autor:
Go, Jinwoo, Isaac, Tobin
The ranking of experiments by expected information gain (EIG) in Bayesian experimental design is sensitive to changes in the model's prior distribution, and the approximation of EIG yielded by sampling will have errors similar to the use of a perturb
Externí odkaz:
http://arxiv.org/abs/2205.09914
Autor:
Bruer, Grant, Isaac, Tobin
We examine the prospect of learning ice sheet damage models from observational data. Our approach, implemented in CRIKit (the Constitutive Relation Inference Toolkit), is to model the material time derivative of damage as a frame-invariant neural net
Externí odkaz:
http://arxiv.org/abs/2204.09748
Autor:
Isaac, Tobin
A rule for constructing interpolation nodes for $n$th degree polynomials on the simplex is presented. These nodes are simple to define recursively from families of 1D node sets, such as the Lobatto-Gauss-Legendre (LGL) nodes. The resulting nodes have
Externí odkaz:
http://arxiv.org/abs/2002.09421
Autor:
Isaac, Tobin
We develop a finite element discretization for the weakly symmetric equations of linear elasticity on tetrahedral meshes. The finite element combines, for $r \geq 0$, discontinuous polynomials of $r$ for the displacement, $H(\mathrm{div})$-conforming
Externí odkaz:
http://arxiv.org/abs/1802.02976
Autor:
Isaac, Tobin Gregory
Projecting the ice sheets' contribution to sea-level rise is difficult because of the complexity of accurately modeling ice sheet dynamics for the full polar ice sheets, because of the uncertainty in key, unobservable parameters governing those dynam
Externí odkaz:
http://hdl.handle.net/2152/31372
Autor:
Egan, Raphael, Guittet, Arthur, Temprano-Coleto, Fernando, Isaac, Tobin, Peaudecerf, François J., Landel, Julien R., Luzzatto-Fegiz, Paolo, Burstedde, Carsten, Gibou, Frederic
Publikováno v:
In Journal of Computational Physics 1 March 2021 428
Autor:
Müller, Andreas, Kopera, Michal A., Marras, Simone, Wilcox, Lucas C., Isaac, Tobin, Giraldo, Francis X.
Numerical weather prediction (NWP) has proven to be computationally challenging due to its inherent multiscale nature. Currently, the highest resolution NWP models use a horizontal resolution of about 10km. In order to increase the resolution of NWP
Externí odkaz:
http://arxiv.org/abs/1511.01561
Autor:
Isaac, Tobin, Knepley, Matthew G.
PETSc's DMPlex interface for unstructured meshes has been extended to support non-conformal meshes. The topological construct that DMPlex implements---the CW-complex---is by definition conformal, so representing non- conformal meshes in a way that hi
Externí odkaz:
http://arxiv.org/abs/1508.02470
The Morton- or z-curve is one example for a space filling curve: Given a level of refinement L, it maps the interval [0, 2**dL) one-to-one to a set of d-dimensional cubes of edge length 2**-L that form a subdivision of the unit cube. Similar curves h
Externí odkaz:
http://arxiv.org/abs/1505.05055
The majority of research on efficient and scalable algorithms in computational science and engineering has focused on the forward problem: given parameter inputs, solve the governing equations to determine output quantities of interest. In contrast,
Externí odkaz:
http://arxiv.org/abs/1410.1221