84 citations · 93 across the 11 of their papers we have counts for
11 papers
Kernel manifolds: nonlinear-augmentation dimensionality reduction using reproducing kernel Hilbert spaces
Alejandro N. Diaz, Jacob T. Needels, Irina K. Tezaur +1
This paper generalizes recent advances on quadratic manifold (QM) dimensionality reduction by developing kernel methods-based nonlinear-augmentation dimensionality reduction. QMs,…
Spatio-temporal Multivariate Cluster Evolution Analysis for Detecting and Tracking Climate Impacts
Warren L. Davis, Max Carlson, Irina Tezaur +3
Recent years have seen a growing concern about climate change and its impacts. While Earth System Models (ESMs) can be invaluable tools for studying the impacts of climate change,…
Random Forest Regression Feature Importance for Climate Impact Pathway Detection
Meredith G. L. Brown, Matt Peterson, Irina Tezaur +2
Disturbances to the climate system, both natural and anthropogenic, have far reaching impacts that are not always easy to identify or quantify using traditional climate science ana…
In-situ data extraction for pathway analysis in an idealized atmosphere configuration of E3SM
Andrew Steyer, Luca Bertagna, Graham Harper +3
We propose an approach for characterizing source-impact pathways, the interactions of a set of variables in space-time due to an external forcing, in climate models using in-situ a…
Fundamentally New Coupled Approach to Contact Mechanics via the Dirichlet-Neumann Schwarz Alternating Method
A. Mota, D. Koliesnikova, I. Tezaur +1
Contact phenomena are essential in understanding the behavior of mechanical systems. Existing computational approaches for simulating mechanical contact often encounter numerical i…
Explicit synchronous partitioned scheme for coupled reduced order models based on composite reduced bases
Amy de Castro, Pavel Bochev, Paul Kuberry +1
This paper formulates, analyzes, and demonstrates numerically a method for the partitioned solution of coupled interface problems involving combinations of projection-based reduced…
The Schwarz alternating method for the seamless coupling of nonlinear reduced order models and full order models
Joshua Barnett, Irina Tezaur, Alejandro Mota
Projection-based model order reduction allows for the parsimonious representation of full order models (FOMs), typically obtained through the discretization of certain partial diff…
A Novel Partitioned Approach for Reduced Order Model -- Finite Element Model (ROM-FEM) and ROM-ROM Coupling
Amy de Castro, Paul Kuberry, Irina Tezaur +1
Partitioned methods allow one to build a simulation capability for coupled problems by reusing existing single-component codes. In so doing, partitioned methods can shorten code de…
Performance portable ice-sheet modeling with MALI
Jerry Watkins, Max Carlson, Kyle Shan +6
High resolution simulations of polar ice-sheets play a crucial role in the ongoing effort to develop more accurate and reliable Earth-system models for probabilistic sea-level proj…
Preconditioned Least-Squares Petrov-Galerkin Reduced Order Models
Payton Lindsay, Jeffrey Fike, Irina Tezaur +1
This paper introduces a methodology for improving the accuracy and efficiency of reduced order models (ROMs) constructed using the least-squares Petrov-Galerkin (LSPG) projection m…
Minimal subspace rotation on the Stiefel manifold for stabilization and enhancement of projection-based reduced order models for the compressible Navier-Stokes equations
Maciej Balajewicz, Irina Tezaur, Earl Dowell
For a projection-based reduced order model (ROM) of a fluid flow to be stable and accurate, the dynamics of the truncated subspace must be taken into account. This paper proposes a…