## Invited Presentations

** On Neumann-type Boundary Conditions for Nonlocal Models**, Workshop on Theoretical and Applied Aspects for Nonlocal Models, Banff International Research Station for Mathematical Innovation and Discovery, Banff, Canada, July 18, 2022.

** On Neumann-type Boundary Conditions for Nonlocal Models**, 9th U.S. National Congress on Theoretical and Applied Mechanics, Austin, Texas, June 21, 2022.

**Research and Opportunities in the Mathematical Sciences at Sandia National Laboratories**, Joint Mathematics Meetings (JMM 2022), Virtual, April 8, 2022.

**On Neumann-type Boundary Conditions for Nonlocal Models**, Mechanistic Machine Learning and Digital Twins for Computational Science, Engineering & Technology (MMLDT-CSET), San Diego, California (virtual), September 27, 2021.

**nPINNS: Nonlocal Physics-Informed Neural Networks**, 16th U.S. National Congress on Computational Mechanics, Chicago, Illinois, (virtual) July 29, 2021.

**Computational Aspects of Nonlocal Models**, Center for Nonlinear Analysis, Department of Mathematical Science, MCS, Carnegie Mellon University, Virtual, April 13, 2021.

**nPINNS: Nonlocal Physics-Informed Neural Networks**, SIAM Conference on Computational Science and Engineering, Virtual, March 4, 2021.

**nPINNS: Nonlocal Physics-Informed Neural Networks**, One Nonlocal World, Virtual, January 23, 2021.

**On Neumann-type Boundary Conditions for Nonlocal Models**, The 5th Annual Meeting of SIAM Central States Section, Ames, Iowa, October 19, 2019.

**On Neumann-type Boundary Conditions for Nonlocal Models**, 9th International Congress on Industrial and Applied Mathematics, Valencia, Spain, July 16, 2019.

**Subsurface Applications for Peridynamics**, SIAM Conference on Computational Science and Engineering, Spokane, Washington, February 27, 2019.

**Subsurface Applications for Peridynamics**, Workshop on Dynamics, Control, and Numerics for Fractional PDEs, San Juan, Puerto Rico, December 6, 2018.

**Solving Real-World Problems with Mathematics and Computing**, Department of Mathematics Colloquium, University of Nebraska-Lincoln, Lincoln, Nebraska, November 30, 2018.

**Domain Decomposition Methods: Origins and Applications to Multiscale Modeling**, Department of Mathematics Continuum Mechanics Seminar, University of Nebraska-Lincoln, Lincoln, Nebraska, November 29, 2018.

**Subsurface Applications for Peridynamics**, 13th World Congress on Computational Mechanics, New York, New York, July 24, 2018.

**Subsurface Applications for Peridynamics**, 6th European Conference on Computational Mechanics, Glasgow, United Kingdom, June 12, 2018.

**Computational and Mathematical Aspects of Nonlocal Models**, Center for Shock Wave-processing of Advanced Reactive Materials, University of Notre Dame, South Bend, Indiana, April 17, 2018.

**A Multi-Time-Step Method for Partitioned Time Integration of Peridynamics**, Recent Trends in Pure and Applied Mathematics, "1 Decembrie 1918" University, Alba Iulia, Romania, August 2, 2017.

**A Multi-Time-Step Method for Partitioned Time Integration of Peridynamics**, 14th US National Congress on Computational Mechanics, Montreal, Canada, July 17, 2017.

**Computational and Mathematical Aspects of Nonlocal Models**, Center for Computational & Applied Mathematics, Purdue University, West Lafayette, Indiana, April 24, 2017.

**A Multi-Time-Step Method for Partitioned Time Integration of Peridynamics**, SIAM Conference on Computational Science and Engineering, Atlanta, Georgia, March 2, 2017.

**Nonlocal Models and Peridynamics**, Applied Mathematics Seminar, Department of Mathematics, The George Washington University, Washington, DC, October 18, 2016.

**A Multi-Time-Step Method for Partitioned Time Integration of Peridynamics**, USACM Conference on Isogeometric Analysis and Meshfree Methods, La Jolla, California, October 11, 2016.

**A Massively Parallel Scalable Implicit SPH Solver**, SIAM Conference on Nonlinear Waves and Coherent Structures, Philadelphia, Pennsylvania, August 10, 2016.

**Computational and Mathematical Aspects of Nonlocal Models**, Department of Mathematics Colloquium, University of Nebraska-Lincoln, Lincoln, Nebraska, February 26, 2016.

**Nonlocal Models and Peridynamics**, Applied Mathematics & Statistics Department Seminar, Colorado School of Mines, Golden, Colorado, January 29, 2016.

**A Massively Parallel Scalable Implicit SPH Solver**, Joint Mathematics Meetings, Seattle, Washington, January 7, 2016.

**A Multi-Time-Step Method for Partitioned Time Integration of Peridynamics**, poster presentation, Workshop on Nonlocal Models in Mathematics, Computation, Science, and Engineering, Oak Ridge National Laboratory, Oak Ridge, Tennessee, October 27, 2015.

**A Multi-Time-Step Method for Partitioned Time Integration of Peridynamics**, 1st Pan-American Conference on Computational Mechanics, Buenos Aires, Argentina, April 28, 2015.

**A Multi-Time-Step Method for Partitioned Time Integration of Peridynamics**, Conference on Recent Developments in Continuum Mechanics and PDEs, Lincoln, Nebraska, April 18, 2015.

**Quadrature Methods for Peridynamics**, SIAM Conference on Analysis of Partial Differential Equations, Orlando, Florida, December 7, 2013.

**Peridigm: A New Paradigm in Computational Peridynamics**, SIAM Conference on Analysis of Partial Differential Equations, Orlando, Florida, December 7, 2013.

**Peridigm: A New Paradigm in Computational Peridynamics**, Workshop on Nonlocal Damage and Failure: Peridynamics and Other Nonlocal Models, San Antonio, Texas, March 11, 2013.

**Peridigm: A New Paradigm in Computational Peridynamics**, Joint Mathematics Meetings, San Diego, California, January 10, 2013.

**Peridigm: A New Paradigm in Computational Peridynamics**, ASME 2012 International Mechanical Engineering Congress & Exposition, Houston, Texas, November 14, 2012.

**Solving Real-World Problems with Mathematics and Computing**, 6th Annual Pi Mu Epsilon Lecture, University of Nebraska-Lincoln, Lincoln, Nebraska, November 9, 2012.

**Computational Peridynamics**, Dept. of Mathematics Continuum Mechanics Seminar, University of Nebraska-Lincoln, Lincoln, Nebraska, November 8, 2012.

**Peridigm: A New Paradigm in Computational Peridynamics**, 10th World Congress on Computational Mechanics, Sao Paulo, Brazil, July 11, 2012.

**Computational Peridynamics**, Workshop on Nonlocal Continuum Models for Diffusion, Mechanics, and Other Applications, The Statistical and Applied Mathematical Sciences Institute (SAMSI), RTP, North Carolina, June 29, 2012.

**A New Approach for a Nonlocal, Nonlinear Conservation Law**, Workshop on Nonlocal Continuum Models for Diffusion, Mechanics, and Other Applications, The Statistical and Applied Mathematical Sciences Institute (SAMSI), RTP, North Carolina, June 28, 2012.

**Computational Peridynamics**, Workshop on Peridynamics, Dissipative Particle Dynamics and the Mori-Zwanzig Formulation, Brown University, Providence, Rhode Island, April 10, 2012.

**Peridynamics for Material Failure**, Los Alamos National Laboratory, Los Alamos, New Mexico, April 5, 2012.

**Computational Peridynamics**, Dept. of Mathematics, Temple University, Philadelphia, Pennsylvania, March 26, 2012.**Computational Materials Modeling with Peridynamics**, 6Lab Meeting: Engineering & Materials at Extreme Conditions, Barcelona, Spain, October 26, 2011.

**Computational Peridynamics**, International Center for Numerical Methods in Engineering (CIMNE), Universitat Politécnica de Catalunya , Barcelona, Spain, October 24, 2011.

**A New Peridynamic-Inspired Approach to Nonlocal Advection**, 2011 AMS Fall Central Section Meeting, Lincoln, Nebraska, October 14, 2011.

**A New Approach to Nonlocal Advection**, 11th US National Congress on Computational Mechanics, Minneapolis, Minnesota, July 26, 2011.

**Computational Peridynamics**, SIAM Conference on Computational Science and Engineering, Reno, Nevada, February 28, 2011.

**Computational Peridynamics**, Mini-Workshop: Mathematical Analysis for Peridynamics, Mathematisches Forschungsinstitut Oberwolfach, Oberwolfach, Germany, January 17, 2011.

**Computational Peridynamics**, ExxonMobil Research and Engineering Company, Annandale, New Jersey, November 5, 2010.

**Peridynamics as an Upscaling of Molecular Dynamics**, 16th US National Congress on Theoretical and Applied Mechanics (USNCTAM), State College, Pennsylvania, June 27-July 2, 2010.

**Atomistic-to-Continuum Coupling Methods Based on Domain Decomposition**, 16th US National Congress on Theoretical and Applied Mechanics (USNCTAM), State College, Pennsylvania, June 27-July 2, 2010.

**Atomistic-to-Continuum Coupling Methods Based on Domain Decomposition**, SIAM Conference on Mathematical Aspects of Materials Science, Philadelphia, Pennsylvania, May 23-26, 2010.

**Mesoscale Simulations with Microscale Tools: Peridynamics in a Molecular Dynamics Code**, 2010 LAMMPS Users Workshop, Computer Science Research Institute, Sandia National Laboratories, Albuquerque, New Mexico, February 25, 2010.

**Mesoscale Simulations with Microscale Tools: Peridynamics in a Molecular Dynamics Code**, IAMCS Workshops on Computational and Mathematical Challenges in Material Science and Engineering: Multi-Scale Materials Modeling — Nano-Scale to Macro-Scale Materials Modeling and Hybrid Theories, Institute for Applied Mathematics and Computational Science, Texas A&M University, College Station, Texas, December 2, 2009.

**Peridynamics for Multiscale Materials Modeling**, Workshop on scale transitions in space and time for materials, Lorentz Center, Leiden, Netherlands, October 21, 2009.

**Towards Multiscale Materials Modeling with Peridynamics**, Dept. of Engineering Mechanics, University of Nebraska-Lincoln, Lincoln, Nebraska, October 6, 2009.

**Molecular dynamics at larger scales: Peridynamics as an upscaling of molecular dynamics**, 10th US National Congress of Computational Mechanics, Columbus, Ohio, July 18, 2009.

**Mesoscale Simulations with Microscale Tools: Peridynamics in a Molecular Dynamics Code**, The 2009 Joint ASCE-ASME-SES Conference on Mechanics and Materials, Virginia Tech, Blacksburg, Virginia., June 27, 2009.

**Towards Multiscale Materials Modeling With Peridynamics**, Center for Computation and Technology, Louisiana State University, Baton Rouge, Louisiana., November 14, 2008.

**Molecular dynamics at larger scales: Peridynamics as an upscaling of molecular dynamics**, Fourth International Conference on Multiscale Materials Modeling, Tallahassee, Florida, October 27-31, 2008.

**Mesoscale Simulations with Microscale Tools: Peridynamics in a Molecular Dynamics Code**, SIAM Conference on Mathematical Aspects of Materials Science, Philadelphia, Pennsylvania, May 11-14, 2008.

**The Fast Solution of Sequences of Linear Systems via Subspace Recycling**, School of Computational Science, Florida State University, Tallahassee, Florida, October 13, 2007.

**Analysis of Krylov-subspace recycling for sequences of linear systems**, 6th International Congress on Industrial and Applied Mathematics, Zurich, Switzerland, July 17, 2007.

**Connecting Domain Decomposition and Atomistic-to-Continuum (AtC) Coupling**, Oak Ridge National Laboratories, Oak Ridge, Tennessee, May 1-2, 2007.

**Connections Between Domain Decomposition and Atomistic-to-Continuum (AtC) Coupling**, Department of Mathematics, Virginia Tech, Blacksburg, Virginia, October 4-6, 2006.

**Relating Atomistic-to-Continuum Coupling and Domain Decomposition**, 7th World Congress on Computational Mechanics, Los Angeles, California, July 16-22, 2006.

**Fast Solution of Long Sequences of Linear Systems in Computational Mechanics**, 7th World Congress on Computational Mechanics, Los Angeles, California, July 16-22, 2006. (Filled in for Eric de Sturler, who was unable to attend.)

**Analysis of Krylov Subspace Recycling for Sequences of Linear Systems**, SIAM Conference of Computational Science and Engineering, Orlando, Florida, February 12-15, 2005.

**Recycling Krylov Subspaces for Sequences of Linear Systems**, Annual Computational Science and Engineering Research Symposium, University of Illinois at Urbana-Champaign, Urbana, Illinois, April 27, 2004.

**Robust Preconditioners and Solvers for Ill-Conditioned Equations from Nonlinear Finite Element Analysis**, Annual Computational Science and Engineering Research Symposium, University of Illinois at Urbana-Champaign, Urbana, Illinois, April 25, 2003.

## Contributed Presentations

**Peridynamics for material failure**, NECDC 2012, Lawrence Livermore National Laboratory, Livermore, California, October 24, 2012.

**Peridynamics for multiscale materials modeling**, Applied Mathematics Principal Investigators Meeting, Argonne National Laboratory, Argonne, Illinois, October 15, 2008.

**Relating atomistic-to-continuum coupling and domain decomposition**, 6th International Congress on Industrial and Applied Mathematics, Zurich, Switzerland, July 20, 2007.

**The Fast Solution of Sequences of Linear Systems via Subspace Recycling**, Seventh Biennial Tri-Laboratory Engineering Conference, Albuquerque, New Mexico, May 7-10, 2007.

**Analysis of Krylov Subspace Recycling for Sequences of Linear Systems**, 7th IMACS International Symposium on Iterative Methods in Scientific Computing, Toronto, Canada, May 5-6, 2005.

**Recycling Krylov Subspaces for Sequences of Linear Systems**, Midwest Numerical Analysis Day, University of Wisconsin-Milwaukee, Malwaukee, Wisconsin, April 24, 2004.

**Improved Krylov Methods and A Framework for the Analysis of Preconditioners for Ill-Conditioned Equations Arising from Nonlinear Finite Element Analysis**, 2003 International Conference On Preconditioning Techniques For Large Sparse Matrix Problems In Scientific And Industrial Applications, Napa, California, October 27-29, 2003.