Applied and Computational Math Seminar

The Applied and Computational Mathematics seminar combines lectures by our faculty, students and visitors from other departments of George Mason University and other institutions. This series serves the purpose of fostering research collaborations and keeping us informed of the recent advances in the field. Questions and suggestions on possible contributions should be addressed to Dan Anderson, Harbir Antil, or Igor Griva.

Unless noted otherwise, talks will be on Fridays from 1:30pm - 2:30pm.

In-person: Exploratory Hall, Room 4106.

Fall 2024

Tuesday, September 10 (11am) - Johnson Center Meeting Room F

Cellular pattering in plants: Who is the master of a cell's fate?

Nicholas Russell, Max Planck Institute of Plant Breeding Research

September 20 (10am) - Virtual

Recent Advances in PINNs and Deep Neural Operators

Prof. George Karniadakis, The Charles Pitts Robinson and John Palmer Barstow Professor
of Applied Mathematics and Engineering, Brown University; Also @MIT & PNNL

September 27

Uncertainty quantification in flow cytometry using a cell sorter

Amudhan Krishnaswamy Usha (NIST)

October 4

Optimizing cancer treatment strategies through mathematical models

Anne Talkington, NIST and University at Buffalo

October 11 at 10am - (joint with CMAI Colloquium)

Optimal quantum control for multi-qubit operations via time-parallel multiple-shooting

Dr. Stefanie Günther, Lawrence Livermore National Laboratory

October 18

Pattern Formation and Noise-Induced Transitions in High Dimensional Inhomogeneous Neural Networks

James MacLaurin, NJIT

October 25 at 10am - (joint with CMAI Colloquium)

Control and Machine Learning

Dr. Enrique Zuazua

[1] Friedrich Alexander Universität Erlangen Nürnberg - Alexander von Humboldt Professorship, Germany [2] Fundación Deusto, Bilbao [3] Universidad Autónoma de Madrid

November 15

Abstract posted soon

Melinda Kleczynski, NIST

Past Seminars

January 26at 10am - (joint with CMAI Colloquium)

Computational methods and dimension reduction for kinetic transport equations

Yingda Cheng, Virginia Tech

February 9 at 10am - (joint with CMAI Colloquium)

Computational strategies for state constraints in PDE-constrained optimization under uncertainty

Thomas Surowiec, Simula Research Laboratory

February 16 at 10am - (joint with CMAI Colloquium)

A deep learning strategy for solving physics-based Bayesian inference problems

Deep Ray, University of Maryland

February 23

Self-organized sacrifice: the death of vegetation patches during dry spells

Arnd Scheel, University of Minnesota

March 15

High-order implicit low-rank time integrators for advection-diffusion and Fokker-Planck models

Joseph Nakao, Swarthmore College

March 22 at 10am - (joint with CMAI Colloquium)

Exponentially-convergent simulations of extreme-mass-ratio binary black hole systems: A discontinuous Galerkin method for the Teukolsky equation with singular source terms

Scott Field, UMass Dartmouth

April 5

An investigation of tipping mechanisms in a carbon cycle model

Katherine Slyman, Brown University

April 26

Quantifying Fairness—Metric Based Approaches to Shape Comparison in Electoral Redistricting

Ranthony Clark, Duke University

Monday, July 15 - 3:30pm - 4:30pm

A scenario of learning dynamics by reservoir computing

Masato Hara, Kyoto University

September 15 at 10am (joint with CMAI Colloquium)

Sample Size Estimates for Risk-Neutral Semilinear PDE-Constrained Optimization

Johannes Milz, Georgia Tech

September 22 at 10am (joint with CMAI Colloquium)

Transport Equations, Compositional Sparsity, and Model Classes for High-Dimensional Approximation

Wolfgang Dahmen, University of South Carolina

September 29

Spectral minimal partitions, nodal deficiency and the Dirichlet-to-Neumann map

Jeremy Marzuola, University of North Carolina at Chapel Hill

October 6 at 10am (joint with CMAI Colloquium)

Towards efficient and robust methods for immiscible incompressible multiphase flows with variable density

Loic Cappanera, University of Houston

October 20 at 10am (joint with CMAI Colloquium)

PDE system identification using transport models

Gustavo Kunde Rohde, University of Virginia

October 27

Hydrodynamic quantum analogs

John Bush, MIT

November 3 at 10am (joint with CMAI Colloquium)

Predicting the Weather, 4d-Var, Hybrid Tangent Linear Models, A.I. and JEDI

Christian Sampson, Joint Center for Satellite Data Assimilation

November 10

Validated numerics via the FFT

Jay Mireles James, Florida Atlantic University

November 17 at 10am (joint with CMAI Colloquium)

Fractional derivatives: Fourier, elephants, memory effects, viscoelastic materials, and anomalous diffusions

Pablo Raul Stinga, Iowa State University

Friday, January 27 at 10am (joint with CMAI Colloquium)

Towards the computational design of smart nanocarriers

Annalisa Quaini, University of Houston

Friday, February 10 at 10am (joint with CMAI Colloquium)

Accuracy Controlled Data Assimilation for Parabolic Problems

Wolfgang Dahmen, University of South Carolina

Friday, February 24 at 10am (joint with CMAI Colloquium)

How to Train Better: Exploiting the Separability of Deep Neural Networks

Elizabeth Newman, Emory University

Friday, March 3

A simple model for radiating solitary waves

Doug Wright, Drexel University

Friday, March 10 at 10am (joint with CMAI Colloquium)

Using Hamilton Jacobi PDEs in Optimization

Samy Wu Fung, Colorado School of Mines

Friday, April 7 at 10am (joint with CMAI Colloquium)

Graph-Structured Optimization: Properties, Algorithms, and Software

Victor Zavala, University of Wisconsin

Friday, April 21 at 10am (joint with CMAI Colloquium)

Recent advances in mixed-integer PDE constrained optimization: regularization, stationarity, and algorithms

Paul Manns, Technical University Dortmund, Germany

Friday, April 28

Auxiliary functions as Koopman observables: Data-driven polynomial optimization for dynamical systems

Jason Bramburger, Concordia University

Friday, September 9 at 10am - Joint with CMAI Colloquium

Optimal multiclass classification and prevalence estimation with applications to SARS-CoV-2 antibody assays

Rayanne Luke, NIST

Thursday, September 15 at 10am - NOTE SPECIAL DAY & TIME - Joint with CMAI Colloquium

Geometric convergence in regularization of inverse problems

Jose A. Iglesias, University of Twente, Netherlands

Wednesday, October 5 at 10:30am - NOTE SPECIAL DAY & TIME

Identification of tipping points due to bifurcation and noise

Blake Barker, BYU

Friday, October 21

Removing Bias and Quantifying Uncertainty in Fluorescence Produced by PCR

Rob De Jaco, National Institute of Standards and Technology

Friday, November 11

Separating Flow Cytometry Populations: A Probabilistic Approach

Danielle Middlebrooks, NIST

Friday, November 18

Optimal Time-Dependent Classification for Diagnostic Testing

Prajakta Bedekar, NIST/Johns Hopkins University

February 18

Supervised Optimal Transport

Yanxiang Zhao, George Washington University

March 11

Computational methods for the study of rare events

Maria Cameron, University of Maryland

April 8

A Dynamical Systems Approach for Most Probable Escape Paths in Non-Gradient Systems

Emmanuel Fleurantin, George Mason University

April 22 at 10am

Integrating Machine-Learned Surrogate Models with Simulations

Bethany Lusch, Argonne National Laboratory

Date	Name	Affiliation	Title
Friday, October 22 In-person and on Zoom	Jake Roberts	NIST	Approximating the Generalized Singular Value Expansion
Friday, October 29 In-person and on Zoom	Leah Shaw	William and Mary	Blue crab population model and seasonal disease spread
Friday, November 5 Zoom	Giovanni Fantuzzi	Imperial College, London	Global minimization of integral functionals via polynomial optimization
Friday, November 12 - Zoom	Mary Pugh	University of Toronto	Using Adaptive Time-Steppers to Explore Stability Domains
Friday, November 19 - Zoom	Kevin Church	McGill University	Validated integration for state-dependent delay equations

Date	Name	Affiliation	Title
Friday, January 24	Jonathan Jaquette	Brandeis University	Rigorous numerics for nonlinear heat equations in the complex plane of time
Friday, January 31	Mahdi Hashemi	George Mason University	Machine learning for smart cities
Friday, February 7	Traian Iliescu	Virginia Tech	Data-Driven Variational Multiscale Reduced Order Models
Friday, February 14	Ratna Khatri	George Mason University	Role of Nonlocal operators in Inverse Problems and Deep Learning
Friday, February 21	Noel Walkington	Carnegie Mellon University	Numerical Approximation of Parabolic SPDE's
Friday, February 28	Oleksandr Misiats	VCU	Patterns around us: a calculus of variations prospective
Friday, March 6	Weiwei Hu	University of Georgia	Boundary control of optimal mixing via flow advection
Thursday/Friday, April 2/3	East Coast Optimization Meeting (ECOM) 2020 - POSTPONED
Friday, April 10	Akwum Onwunta	University of Maryland	TBA
Friday, April 24	Pablo Stinga	Iowa State University	TBA

Fall 2019

Date	Name	Affiliation	Title
Friday, September 6	Jose Francisco Rodrigues	Universidade de Lisboa	Nonlocal evolution transport densities
Friday, September 13	Carlos Rautenberg	George Mason University	Spatially Distributed Parameters in Image Processing: From Total Variation to Fractional Models
Friday, September 20	No Seminar Today
Friday, October 4	Armin Schikorra	University of Pittsburgh	Self-repulsive curvature energies for curves and surfaces: regularity theory and relation to harmonic maps
Friday, October 11	Lauren Childs	Virginia Tech	Modeling malaria development in mosquitoes: How fast can mosquitoes pass on infection?
Friday, October 18	David Marchette	Naval Surface Warfare Center	Spectral Graph Embedding for Clustering
Thursday, October 24 (Special Joint CDS, Math, and Physics Seminar, Exploratory Hall 3301, 1:00-2:30pm)	Mason Porter	UCLA Dept. of Mathematics	Topological Data Analysis of Spatial Complex Systems
Friday, October 25	Yuliya Gorb	University of Houston and National Science Foundation	Asymptotic Analysis of Singularities in Media with Inhomogeneities
Friday, November 1	Ryan Evans	National Institute of Standards and Technology	Transport Phenomena in Field Effect Transistors
Friday, November 8	Matt Holzer	George Mason University	Stability and Dynamics of Invasion Fronts in Spatially Extended Systems
Friday, November 15	SIAM Faculty Symposium
Friday, November 22	Bedrich Sousedik	UMBC	Spectral stochastic finite elements for two nonlinear problems
Friday, December 6	Elena Queirolo	Rutgers University	Bifurcations in ODEs and a PDE

Summer 2019

Date	Name	Affiliation	Title
Thursday, May 30 (Special Time: 10am-11am; Location, Exploratory Hall: 4106)	Andrea N. Ceretani	Universidad Nacional de San Martin, Argentina	Heat conducting fluids in domains with open boundaries.
Wednesday, June 5 (Special Time: 10am-11am; Location, Exploratory Hall: 4106)	Tianyi Shi	Cornell University	Numerical tensor-train ranks and tensor displacement structure
Wednesday, June 19 (Special Time: 10am-11am; Location, Exploratory Hall: 4106)	Soeren Bartels	Albert-Ludwigs-University Freiburg	Approximating gradient flow evolutions of self-avoiding inextensible curves and elastic knots

Spring 2019

Date	Name	Affiliation	Title
Feb. 1	Yoshitaka Saiki	Hitotsubashi University	Machine-learning construction of a model for a macroscopic fluid variable using the delay-coordinate of a scalar observable
Feb. 15	Bjorn Sandstede	Brown University	Geometry and analysis of localized structures
Mar. 8	Animesh Biswas	Iowa State University	Fractional Powers of Parabolic Operators and Master Equation
Mar. 15	Spring Break (No Seminar)
Mar. 22	Serkan Gugercin	Virginia Tech	Model reduction: A systems-theoretic perspective
April 5	East Coast Optimization Meeting
April 12	Heyrim Cho	University of Maryland	Mathematical model of Hematopoietic cell differentiation from single-cell gene sequencing data
April 19	Wujun Zhang	Rutgers University	A rate of convergence of numerical optimal transport problem with quadratic cost

Fall 2018

Date	Name	Affiliation	Title
Aug. 31	Lise-Marie Imbert-Gerard	University of Maryland	Wave propagation in inhomogeneous media: An introduction to Generalized Plane Waves
Sept. 7	Ana Maria Soane	United States Naval Academy	Computational analysis of problems on domains with small holes
Sept. 21	Andrei Draganescu	UMBC	Multigrid preconditioning for PDE-Constrained optimization: two new applications
Sept. 28	Mahamadi Warma	University of Puerto Rico, Rio Piedras	Controllability of space-time fractional diffusive and super-diffusive equations
Oct. 12	GMU/SIAM Faculty Symposium
Oct. 19	Jie Xu	George Mason University	Efficient Stochastic Simulation Optimization Algorithms and Their Applications
Nov. 2	Gopal Srinivasan	IIT Bombay, India	The gamma function - an eclectic tour
Nov. 9	Sui Tang	Johns Hopkins University	Learning interaction laws in high dimensional agent-based dynamics from observations
Nov. 16	Harbir Antil	George Mason University	Fractional PDEs: control, applications, and beyond
Nov. 30	Tonatiuh Sanchez-Vizuet	NYU	An adaptive HDG solver for Dirichlet boundary value problems in curved domains: an application to plasma equilibrium

Spring 2018

Date	Name	Affiliation	Title
Jan. 26	Dimitris Ntogkas	Univeristy of Maryland, College Park	Non-Conforming FEM for Large Bending Deformations with Isometry Constraint
Feb. 2	Harbir Antil	George Mason University	Controlling the Magnetic Force: Basic Strategies and Applications to Magnetic Drug Targeting
Feb. 9	Patrick O'Neil	Lead Data Scientist, Spaceflight Industries	Analyzing the Microstructure of Flexible Sandstone using Topological Data Analysis
Feb. 16	Francisco J. Sayas	University of Delaware	Waves in viscoelastic media
Feb. 23	Johannes Pfefferer	Technical University Munich, Germany	Error estimates for normal derivatives on boundary concentrated meshes
Mar. 2	Shuddho Das	NYU	Koopman spectra in reproducing kernel Hilbert spaces
Mar. 30	Mahamadi Warma	University of Puerto Rico	Elliptic problems associated with the fractional Laplace operator
Apr. 6	Paul Patrone	NIST	The power of similarity solutions and scaling methods: measuring microfluidic flow-rates we can't even model
Apr. 13	Juan Pablo Borthagaray	University of Maryland, College Park	Finite elements for fractional diffusion: towards nonlinear problems
Apr. 27 (Joint CAGS and Applied Math Seminars, 12:30-1:30pm)	Stephan Wojtowytsch	Carnegie Mellon University	Diffuse Interfaces and Topology: A Phase-Field Model for Willmore's Energy
Apr. 27 (Joint CAGS and Applied Math Seminars, 1:30-2:30pm)	Yang Kuang	Arizona State University	Mathematical Models of Prostate Cancer Patients Undergoing Intermittent Androgen Deprivation Therapy

Fall 2017

Date	Name	Affiliation	Title
Sept. 1	Arun Moorthy	National Institute of Standards and Technology	Exploring questions in life science using mathematics - a collection of problems and solutions
Sept. 8 (In Cooperation with AWM and SIAM GMU chapters)	Ratna Khatri, Lucas Bouck and Marilyn Vazquez	George Mason University	SIAM/AWM Student talks
Sept. 15	Mahamadi Warma	University of Puerto Rico	Analysis of the null controllability of space-time fractional diffusion equations
Sept. 22	Carlos Rautenberg	Humboldt University, Berlin	Optimal Parameter Selection for a Weighted Total Variation Model in Image Reconstruction
Sept. 29	Mahmoud Lababidi	DigitalGlobe	Convolution Networks for Object detection in Satellite Imagery
Oct. 27	Christian Glusa	Sandia National Labs	Adaptive FEM for the fractional Laplacian: a priori and a posteriori error estimates, efficient implementation and multigrid solver
Nov. 10	John Harlim	Penn State University	Estimating parameters of Ito diffusion using the fluctuation dissipation theory response statistics
Nov. 17	Dmitriy Leykekhman	University of Connecticut	Best approximation of the Galerkin solution for elliptic and parabolic problems in L-infinity.
Dec. 1	Claudio Torres	Universidad Tecnica Federico Santa Maria	A brief overview of a 2D coupled grain growth model and a 3D implicit-transition method for grain growth.

Spring 2017

Date	Name	Affiliation	Title
Feb. 3	John P. Nolan	American University	Probabilistic and numerical aspects of stable distributions
April 7	Bourama Toni	Virginia State University	Nash Limit Cycles in the dynamics of America socio-cultural evolution: A game - theoretical approach
April 14	Jason Hindes	Naval Research Lab	Pattern Formation and Fluctuations in Complex Networks
April 21	Konstantin Mischaikow	Rutgers University	A Combinatorial Algebraic Topological Approach to Nonlinear Dynamics
April 28	Harbir Antil	George Mason University	Fractional Operators with Inhomogeneous Boundary Conditions: Analysis, Control, and Discretization
THURSDAY, May 4, 1pm-2pm, Exploratory Hall Room 3301 (NOTE SPECIAL DATE, TIME and ROOM)	Scott Field	University of Massachusetts - Dartmouth	Fast recovery of far-field time-domain signals from near-field data

Fall 2016

Date	Name	Affiliation	Title
Aug. 23 (TUESDAY!)	Johannes Pfefferer	Technical University Munich	Finite element error estimates for Dirichlet boundary control problems in polygonal domains
Sept. 2	Pablo Stinga	Iowa State University	Extension problem for fractional powers of parabolic operators and applications
Sept. 16	Muruhan Rathinam	UMBC	Convergence, stability and robustness of multidimensional opinion dynamics in continuous time
Sept. 23	Xiaofeng Ren	George Washington University	The spectrum of the torus profile to a geometric variational problem with long range interaction
Oct. 7	Ryan Evans	NIST	Measuring Reaction Rate Constants With Optical Biosensors
Oct. 21	Mahamadi Warma	University of Puerto Rico	What are the Three Classical Boundary Conditions for the Fractional Laplace Operator?
Nov. 18	Dominick Gallo	University of Trier	Optimal control of fractional PDEs
Dec. 2	Jacek Cyranka	Rutgers University	Computer proof of heteroclinic connection in one-dimensional Ohta Kawasaki diblock copolymer model

Spring 2016

Date	Name	Affiliation	Title
Feb. 12	John Shebalin	NASA/GMU	Large-Scale Coherent Structure in Magnetohydrodynamic Turbulence
Feb. 19	Pablo Venegas	University of Maryland	Optimal Control of Magnetic Nanoparticles
Mar. 11 (Spring break) 1:30pm-2:20pm	Kaushik Dayal	Carnegie Mellon University	Multiscale Atomistics for Defects in Electronic Materials
Mar. 11 (Spring break) 2:30pm-3:20pm	Carlos Rautenberg	Humboldt University, Berlin	A Robust Approach to Optimal Sensor Placement
Mar. 14 (MONDAY, special date and time 11:00am-12:00)	Kelly Mcquighan	Boston University	Towards Metastability in the Burgers Equation with Periodic Boundary Conditions
Mar. 25	Longfei Li	RPI	A stable partitioned FSI algorithm for incompressible flow and deforming beams
April 8	Scott McCalla	Montana State University	Modeling crime and gangs
April 15	Javed Siddique	Penn State, York	Mathematical Modeling of Tear film dynamics
April 22	Kevin Hall	NIH	The calculus of calories: quantitative physiology of human metabolism and body weight dynamics

Fall 2015

Date	Name	Affiliation	Title
Sept. 11	Harbir Antil	GMU	Finite Horizon Model Predictive Control of Electrowetting on Dielectric with Pinning
Sept. 18	Howard Elman	Univeristy of Maryland	Reduced Basis Collocation Methods for Partial Differential Equations with Random Coefficients
Sept. 25	David Shirokoff	NJIT	Convex relaxations in material science and approximate global minimizers
Oct. 9	Ivan Egorov	GMU	An Approach to Deterministic Optimal Control Synthesis Based on the Generalized Method of Characteristics
Oct. 16	Kevin Hall	NIH	The calculus of calories: quantitative physiology of human metabolism and body weight dynamics
Oct. 23	Drew Kouri	Sandia National Laboratory	A Data-Driven Approach to PDE-Constrained Optimization under Uncertainty
Oct. 30	Thomas Seidman	UMBC	The dynamics of Cosserat rods with soft lateral contact
Nov. 6	Mahamadi Warma	University of Puerto Rico	Some Recent Progress on the Controllability of Fractional Super Diffusion Equations
Nov. 13	Andrew Barker	LLNL	Algebraic multigrid for the de Rham complex
Nov. 20	Johannes Pfefferer	GMU	Finite element error estimates for semilinear elliptic Neumann boundary control problems in polygonal domains
Dec. 4	Helen Li	Brown Univerisity	Blended atomistic-to-continuum hybrid methods for modeling crystalline materials
Dec. 11	Suddhasattwa Das	University of Maryland	A Low Dimensional Paradigm for High Dimensional Chaos

Spring 2015

Date	Name	Affiliation	Title
Jan. 30	Junping Wang	National Science Foundation	Weak Galerkin Finite Element Methods for PDEs
Feb. 6	Richard Otis	Penn State University	Global energy minimization of multi-component phases with internal degrees of freedom
Feb. 20	Anton Gagin	NIST	Accounting for Unknown Systematic Errors in Crystal Structure Refinements: A Bayesian Statistics Approach
Feb. 27	Tyrus Berry	GMU/Penn State	Data-driven forecasting without a model and with a partially known model
Mar. 6	David Shirokoff	NJIT	A simple, efficient and accurate method for computing the order-disorder phase transition in double well energy functionals
Mar. 20 - NOTE SPECIAL TIME 10:30am-11:30am	Paul Carter	Brown University	Pulses with oscillatory tails in the FitzHugh-Nagumo system
Mar. 27	FINITE ELEMENT CIRCUS
Apr. 3	Denis Ridzal	Sandia National Laboratory	Optimization-based models and algorithms for the feature-preserving solution of transport equations
Apr. 10	William Kalies	Florida Atlantic University	Lattice Structures in Dynamics
Apr. 17	Michael Mascagni	Florida State University/NIST	Monte Carlo Methods and Partial Differential Equations: Algorithms and Implications for High-Performance Computing
Apr. 24	Ronald Hoppe	University of Houston/University of Augsburg	Equilibrated A Posteriori Error Estimators for Interior Penalty Discontinuous Galerkin Approximations of Second and Fourth Order Elliptic Problems

Fall 2014

Date	Name	Affiliation	Title
Aug. 29	Francisco Javier Sayas	University of Delaware	Transient transmission problems with integral methods
Sept. 5	Michael Nielan	Pittsburgh	Finite element methods for elliptic problems in non--divergence form
Sept. 12	Thomas Surowiec	Humboldt University of Berlin	Solving optimal control problems governed by variational inequalities of the first and second kind via non-smooth analysis and bundle-free implicit programming approaches
Sept. 19	Yanxiang Zhao	George Washington University	Periodic migration in a physical model of cells on micropatterns
Oct. 3	SIAM Graduate Symposium - No Seminar this week
Oct. 17	Patrick Shipman	Colorado State	Self-Assembled Nanoscale Patterns Produced by Ion Bombardment of Binary Compounds
Nov. 7	Ignacio Tomas	University of Maryland	PDE models for Ferrofluids and their Numerical Analysis
Nov. 14	Zichao Di	Argonne National Laboratory	Optimization Approach for Tomographic Inversion from Multiple Data Modalities
Nov. 21	John Gemmer	Brown University	Isometric Immersions and Pattern Formation in Thin Elastic Sheets
Dec. 5	Konstantin Mischaikow	Rutgers University	A combinatorial approach to dynamics applied to switching networks

Spring 2014

Date	Name	Affiliation	Title
Jan. 31	Enrique Otarola	University of Maryland	A PDE Approach to Numerical Fractional Diffusion
Feb. 21	Hector Corrada Bravo	University of Maryland	Cell-specific methylation pattern reconstruction using minimum cost network flow algorithms
Mar. 28	Jeff Snider/Diego Torrejon	George Mason University	Graduate Student Web Event
Apr. 4	Ricardo Nochetto	University of Maryland	Discrete Geometric Gradient Flows
Apr. 11	Gunay Dogan	NIST	Shape Optimization for Image Analysis
Apr. 25	Kevin Carlberg	Sandia	Reduced-order modeling in uncertainty quantification: modeling and controlling error
May 2 (Special Time: 11am-12pm)	Sean Colbert-Kelly	NIST	A Generalized Ginzburg-Landau model in a Planar Geometry

Fall 2013

Date	Name	Affiliation	Title
Sept. 6	Dan Cranston	Virginia Commonwealth University	Boundedness of Solutions to Reciprocal Max-Type Difference Equations
Sept. 20	Lois Curfman McInnes	Argonne National Laboratory	Hierarchical Krylov Methods and Nested Krylov Methods for Extreme-Scale Computing
WEDNESDAY, Oct. 16 (Exploratory Hall, Room 3301, 1:30-2:30pm)	Danny Sorensen	Rice University	Discrete Emprirical Interpolation for Nonlinear Model Reduction
Oct. 18	Muruhan Rathinam	UMBC	Moment Growth Bounds on Markov Processes on Non-negative Integer Lattices
Oct. 25	Shawn Walker	LSU	A New Mixed Formulation For a Sharp Interface Model of Stokes Flow and Moving Contact Lines
Nov. 1	Saurabh Jain	Johns Hopkins University	Optimal Control Problems in Computational Anatomy
Nov. 8	Jay Mireles James	Rutgers University	Computer assisted proof of connecting orbits in dynamical systems by the projected boundary approach
Nov. 22	Claire Monteleoni	George Washington University	Climate Informatics: Recent Advances and Challenge Problems for Machine Learning in Climate Science
Dec. 6	Andreas Meister	University of Kassel	Flow Fields at all Speeds: Analysis, Numerics and Simulation

Spring 2013

Date	Name	Affiliation	Title
Feb. 1	Brenton LeMesurier	College of Charleston	Airy-like pulses in models of large molecular chains, and conservative numerical methods for quasi-linear Hamiltonian systems
Feb. 8	Scott Field	Department of Physics, University of Maryland	A Generalized Discontinuous Galerkin Scheme for Accurate Modeling of Binary Black Holes
Feb. 15	Wujun Zhang	University of Maryland	Convergence and quasi optimality of adaptive hybridizable discontinuous Galerkin methods
Feb. 22	Bill Rand	University of Maryland	Trust and Influence in Social Media
Mar. 1	Sivan Leviyang	Georgetown University	Big Data and HIV Modeling
Mar. 8	Claudio Torres	George Mason University	Modeling materials coarsening: insights from a vertex code
Mar. 29	Hantaek Bae	University of California, Davis	Regularity and decay estimates of dissipative equations
Apr. 5	Greg Byrne	George Mason University	Differential Dynamical Systems: Biofluids and Chaos in Higher Dimensions
Apr. 12	Tanushree Luke	George Mason University	Exact Collective Dynamics for a Heterogeneous Network of Theta Neurons
Apr. 19	Jean-Philippe Lessard	Universite Laval	Computation of solutions of nonlinear differential equations using Chebyshev series and rigorous numerics
Apr. 26	Wilfrid Gangbo	Georgia Institute of Technology	A variational problem involving a polyconvex integrand
May 3	Jeff Snider	George Mason University	Thermodynamic equilibrium phase diagram calculation

Fall 2012

Date	Name	Affiliation	Title
Sep. 7	Abner Salgado	University of Maryland	FEM for TV Flow without Regularization
Sep. 14	Inga Maslova	American University	Wavelet Transform Boundary Conditions for Improved Forecasting Model
Sep. 17 (Monday) [in The Hub (formerly SUBII), Meeting Room 5]	Steven Wise	University of Tennessee	A Mixed Discontinuous Galerkin, Convex Splitting Scheme for a Modified Cahn-Hilliard Equation
Sep. 21	Maria Cameron	University of Maryland	Computing Transition Paths in Stochastic Systems
Sep. 28	Gary Friedman	Drexel University	On multi-stability and its evolution in biological networks and cells
Oct. 5	Asha Nurse	National Institute of Standards and Technology	Bubble motion and size variation during thermal migration with phase change
Oct. 12	Huzefa Rangwala	George Mason University	An integrated machine learning framework for analyzing protein-ligand interaction data
Oct. 19	Victor Yakovenko	University of Maryland	Statistical Mechanics of Money, Income, Debt, and Energy Consumption
Oct. 26	Kara Maki	Rochester Institute of Technology	Settling Dynamics of the Contact Lens
Nov. 2	Amarda Shehu	George Mason University	Of Protein Structures and Motions: Probabilistic Search and Optimization
Nov. 9	Sebastien Motsch	University of Maryland	Mathematical modeling of self-organized dynamics
Nov. 12 (Monday) [in Johnson Center, Room A]	Karen Wilcox	Massachusetts Institute of Technology	Model reduction for systems with high-dimensional parameter spaces
Nov. 16	Maria Gualdani	George Washington University	Factorization of non-symmetric operators and exponential h-theorem
Nov. 30			TBA
Dec. 7	Quan Deng	University of Delaware	Tear film dynamics in a moving domain

Spring 2012

Date	Name	Affiliation	Title
Feb. 24	J. Barkley Rosser	James Madison University	Complex Ecologic-Economic Dynamics (SPECIAL ROOM: Science and Tech 1, Room 206)
Mar. 2	Michael Minion	University of North Carolina	Temporal Parallelization for Partial Differential Equations
Mar. 9	Marian Mrozek	Jagiellonian University	Towards the understanding of the homological persistence of maps
Mar. 30	Matthew Hendrey	George Mason University	Modeling the U.S. Housing Bubble (SPECIAL ROOM: Science and Tech 1, Room 206)
Apr. 3	Andy Dorsett	Wolfram Research	Mathematica 8 in Education and Research (Special Time and Room: 12:30-1:45, Research 1, Room 163)
Apr. 6	Andrew Corrigan	Naval Research Lab	A hybrid-grid compressible flow solver for large-scale supersonic jet noise simulations on multi-GPU clusters
Apr. 13	Harbir Lamba	George Mason University	Far-from-Equilibrium Dynamics in Economic and Financial Systems
Apr. 20	Michael Gratton	Metron, Inc.	Modeling Foams
May 4	Victoria Booth	University of Michigan	Dynamics of sleep-wake regulation (SPECIAL ROOM AND TIME: 11am in Science and Tech 1, Room 206

Fall 2011

Date	Name	Affiliation	Title
Sept. 9	Hans Kaper	Georgetown University and Argonne National Lab	Mathematics and Climate: A New Partnership
Sept. 23	Carson Chow	National Institutes of Health	The dynamics of obesity
Sept. 30	Andrei Draganescu	UMBC	Multigrid preconditioners for linear systems arising in PDE optimization
Oct. 7	Zach Trautt	George Mason University	Grain Boundary Properties From Atomistic Simulations
Oct. 14	Sivan Leviyang	Georgetown University	Stochastic Models of HIV Infection
Oct. 21	Nick Gewecke	University of Delaware	Dynamics of Mushy Layers
Oct. 28	Ira Schwartz	NRL	The Dynamical Geometry of Epidemic Extinction
Nov. 4	SIAM Faculty Research Symposium	George Mason University	SIAM Student Chapter Event (SPECIAL TIME)
Nov. 11	John Mallet-Paret	Brown University	Recent Progress in Delay-Differential Equations
Nov. 18	Burt Tilley	WPI	Thermocapillary Control of Thin Fluid Sheets
	Svetlana Roudenko	George Washington University	TBA (SPECIAL TIME: 3:30 Joint with Math Colloquium)
Dec. 2	Annalisa Calini	College of Charleston/National Science Foundation	Integrable dynamics of closed vortex filaments: finite-gap solutions and their linear stability
Dec. 9	Juan Sabuco	Universidad Rey Juan Carlos, Madrid, Spain	Partial Control of Chaotic Systems

Spring 2011

Date	Name	Affiliation	Title
Jan. 20 (THURSDAY 1PM)	Eliot Fried	McGill University	Wrinkling of a stretched thin sheet
Jan. 28	David Richeson	Dickinson College	Obtaining entropy bounds for nonhyperbolic dynamical systems via symbolic dynamics
Feb. 4	Konstantina Trivisa	Mathematics University of Maryland	On the Mathematical Analysis of Fluid Mixtures
Feb. 11	G. Scott Cochran	George Mason University	Homology Computations of Nodal Domains - Error Estimates, Validation, and Applications
Feb. 18	Robert Axtell	George Mason University	Some Open Mathematical Problems in Computational Social Science
Feb. 25	Konstantin Mischaikow	Rutgers University	Computing Homology via Preprocessing by Morse Coreduction
Mar. 4	Markus Hilpert	Johns Hopkins University	Incorporation of Dynamic Contact Angle into Models for Two-Phase Flow in Porous Media
Mar. 11	Andrew Samuelson	George Mason University	Mathematical Modeling and Analysis for Fluid-Structure Interaction Applications to Aneurysms
Mar. 25	Bonita Saunders	NIST	Numerical Grid Generation Applied to Interactive Complex Function Visualization in the NIST Digital Library of Mathematical Functions
Apr. 1	William Ott	University of Houston	Searching for SRB measures
Apr. 8	Jonathan Bell	UMBC	Cable Theory on Graphs: A Synopsis of Some Forward and Inverse Problems
Apr. 15 (SPECIAL TIME: 3:30PM)	Andrew Bernoff	Harvey Mudd College	Langmuir Layers: Exploring a (nearly) Two-dimensional Fluid Experiment (Joint with Math Colloquium)
Apr. 22	David Saylor	FDA	Predicting Microstructure Evolution in Drug Eluting Coatings
Apr. 29	Nathalia Peixoto	George Mason University	Brain in a cup: attempts at deciphering the meaning of spikes

Fall 2010

Date	Name	Affiliation	Title
Sep. 10	Chi-Kwong Li	Mathematics College of William and Mary	Quantum Computing and Matrix Analysis
Sep. 17	Tyrus Berry	Mathematical Sciences George Mason University	Convergence of periodically-forced rank-type equations
Sep. 24	Qi Wang	Mathematics and Nano-Center U. South Carolina	Kinetic models for complex fluid systems: modeling and simulations
Oct. 1	Evelyn Sander	Mathematical Sciences George Mason University	The Dynamics of Nucleation in Stochastic Cahn-Morral Systems
Oct. 8	Paul So	Physics and Krasnow Institute George Mason University	The emergence of macroscopic chaos and crisis in a network of globally coupled phase oscillators
Oct. 15	Lou Pecora	Naval Research Lab	Regularization of Tunneling Rates in Two-dimensional Systems with Quantum Chaos
Oct. 22	Daniel Wheeler	NIST	Phase Field Modeling of Dissolutive Wetting
Oct. 29	Zafer Boybeyi	Department of Atmospheric, Oceanic and Earth Sciences George Mason University	Global to Local Scale Atmospheric Modeling Using Solution Adaptive Modeling Technique
Nov. 5	Chad Topaz	Mathematics Macalester College	Biological aggregation patterns and social interactions
Nov. 12	Rich McLaughlin	Mathematics UNC	Passive scalar advection in parallel shear flows: WKBJ mode sorting on intermediate times and the evolution of skewness
Nov. 19	Susan Minkoff	Mathematics UMBC	Sniffing for Leakage: Trace Gas Sensors and Carbon Sequestration
Dec. 3	John Spouge	NIH	Markov renewal-success processes with a time lag

Spring 2010

Date	Name	Affiliation	Title
Feb. 12	John Spouge	NIH, Nat. Center of Biotechnology Information	CANCELLED (to be rescheduled) A Rigorous Statistical Theory for Detecting Repeats In Biological Sequences
Feb. 19	James Benson	NIST	Mathematical Modeling in Cryobiology
Feb. 26	Bart Oldeman	Concordia University	Numerical continuation of orbit segments with application to the three body problem and a biological model
Mar. 5	Dongbin Xiu	Mathematics Purdue University	Uncertainty Analysis for Complex Systems: Algorithms and Data
Mar. 19	Diana Thomas	Mathematics Montclair State University	The Problem of Adherence to Diets - A Mathematical Perspective
Mar. 26	Kathleen Hoffman	Mathematics UMBC	Modeling Lamprey Locomotion Central Pattern Generator (CPG)
Apr. 2	John Spouge	NIH, Nat. Center of Biotechnology Information	A Rigorous Statistical Theory for Detecting Repeats In Biological Sequences
Apr. 9	Weining Kang	Mathematics UMBC	Performance Analysis of Many-server Queues with Reneging
Apr. 16	Tanya Kostova Vassilevska	NSF	Genotype Dominance in the Molecular Quasispecies Model
Apr. 23	Songqing Chen	Computer Science GMU	Towards Mobile Internet Accesses
Apr. 30	Snezhana Abarzhi	U. Chicago	12:30pmThe effect of heterogeneities and noise on pattern formation and chaos development

Fall 2009

Date	Name	Affiliation	Title
Sep. 18	Igor Griva	Mathematics & CDS George Mason University	Convergence properties of primal-dual interior- and exterior-point methods for nonlinear constrained optimization.
Sep. 25	Andrew Corrigan	CDS George Mason University	Meshless methods using adaptive and symmetric kernels
Oct. 2	Murahan Rathinam	Mathematics UMBC	Modeling trader behavior and its effect on stock price dynamics
Oct. 9	Jonathan Guyer	NIST	FiPy: An Open Source Finite Volume PDE Solver implemented in Python
Oct. 16	Simone Bianco	Mathematics College of William and Mary	Epidemics with multistrain interactions: cross immunity and antibody-dependent enhancement
Oct. 23	Dongbin Xiu	Mathematics Purdue University	CANCELLED
Oct. 30	Pak-Wing Fok	Mathematics University of Delaware	Reconstruction of bond potentials from multiple rupturing time data
Nov. 6	Junping Wang	NSF	A maximum value principle for finite element approximations
Nov. 13	Valerie Coffman	NIST	OOF: An Image-Based Finite Element Solver for Materials Science
Nov. 20	Jean-Philippe Lessard	Rutgers University and IAS	A priori estimates and validated continuation for equilibria of high dimensional PDEs
Dec. 4	Aaron Lott	NIST	Fast Solvers for Models of Fluid Flow with Spectral Elements

Spring 2009

Date	Name	Affiliation	Title
Jan. 23	Joyce Lin	Mathematics University of North Carolina, Chapel Hill	A Falling Sphere Through Strongly Stratified Fluid at Low Reyolds Number
Jan. 30	Diane O'Leary	Mathematics University of Maryland	Validating Approximate Solutions to Ill-Posed Problems
Feb. 6	Janusz Wojtusiak	Machine Learning and Inference Laboratory George Mason University	Selected Aspects of the Learnable Evolution Model
Feb. 13	Hans Engler	Mathematics Georgetown University	On second order differential equations with asymptotically small dissipation
Feb. 20	Brian Hunt	Mathematics University of Maryland	Determining the initial conditions for a weather forecast
Feb. 27	Andy Bernoff	Harvey Mudd College	(CANCELLED)Domain Evolution and Relaxation in Langmuir Films
Mar. 6	Hans Kaper	Argonne National Lab	Reduction Methods for Systems of Differential Equations
Mar. 20	John Pelesko	Mathematics University of Delaware	Soap Films in Electric Fields
Apr. 3	Qiang Du	Mathematics Pennsylvania State University	Diffuse interface modeling of some interface problems involving elastic energy contributions
Apr. 10	Dionisios Margetis	Mathematics University of Maryland	Kinetic Aspects of Crystal Surface Evolution: Modeling and Analysis
Apr. 17	Peter Bates	Mathematics Michigan State University	The motion of particles driven by Allen-Cahn dynamics on the boundary of a smooth domain
Apr. 24	Ashwin Vaidya	Mathematics University of North Carolina Chapel Hill	A Mathematical Theory of Fluid-Solid Interaction with Application to Particle Sedimentation

Fall 2008

Date	Name	Affiliation	Title
Sep. 12	Robert Allen	Mathematics George Mason University	Turing Instabilities in Reaction-Diffusion Equations
Sep. 19	Stanislaus Maier-Paape	RWTH Aachen, Germany	Computer assisted proofs of heteroclinic connections
Sep. 26	James Warren	NIST	Phase field modeling of wetting, nucleation and more
Oct. 3	Gabriel Prajitura	Mathematics College of Brockport, SUNY	Linear chaos
Oct. 10	Dmitry Golovaty	Mathematics University of Akron	A Ginzburg-Landau-type model of carbon nanotubes
Oct. 17	Howard Sheng	Computational Sciences George Mason University	Computational approaches toward the structure and formation of metallic glasses
Oct. 24	David Levermore	Mathematics University of Maryland	Dispersive Corrections to the Compressible Navier-Stokes System
Oct. 31	Frank Baginski	Mathematics George Washington University	Structural Analysis of Thin Compliant Pneumatic Envelopes
Nov. 7	Jim Yorke	Mathematics University of Maryland	Period-doubling Cascades galore - explaining a phenomenon we see in dynamical systems
Nov. 14	Ed Scheinerman	Applied Mathematics & Statistics Johns Hopkins University	Random Threshold Graphs
Nov. 21	Björn Sandstede	Applied Mathematics Brown University	Localized patterns in the Swift-Hohenberg equation
Dec. 5	Harbir Lamba	Mathematics George Mason University	Modeling Imperfect Financial Markets

Spring 2008

Date	Name	Affiliation	Title
Jan. 25	Rainald Löhner	Comp. Fluid Dynamics George Mason University	Adaptive Unstructured Embedded/Immersed Methods
Feb. 1	Edward W. Swim	Mathematics US Military Academy	Nonlinear fluid-structure interaction models for biologically inspired elastic membrane wings
Feb. 8	Drew LaMar	Applied Sciences College of William and Mary	Periodic Orbit Continuation in Multiple Time Scale Systems
Feb. 15	Edwin Fuller	NIST	Mesoscale Computer Simulations: from exploding ceramics to tumor ablation
Feb. 22	Xiaofeng Ren	Mathematics George Washington University	Droplet solutions of a 2D free boundary problem from diblock copolymer morphology
Feb. 29	Yekaterina Epshteyn	Mathematics Carnegie Mellon University	New Discontinuous Galerkin Methods for the Chemotaxis Model and Closely Related Biomedical Problems
Mar. 7	Tianyu Zhang	Mathematics Florida State University	Phase-Field Models for Biofilm Growth, Expansion, and Biofilm-Flow Interaction
Mar. 21	Lili Ju	Mathematics University of South Carolina	2:30pm: 3D open shape correspondence through topologically consistent triangulations
Apr. 4	Konstantin Mischaikow	Mathematics Rutgers University	Building a Database for the Global Dynamics of Multi-Parameter Systems
Apr. 11	Walter Villanueva	NIST	Diffuse-interface Simulations of Some Capillary-Driven Flows
Apr. 18	David Saylor	FDA	Microstructure-Based Modeling of Controlled Drug Release Coatings
Apr. 25	Stephen Davis	Mathematics Northwestern University	Dynamics and stability of foams

Fall 2007

Date	Name	Affiliation	Title
Sept. 7	Dan Anderson	Mathematics George Mason University	Liquid Droplets Dynamics: Variations on a Theme
Sept. 21	Maria Emelianenko	Mathematics George Mason University	Microstructure Evolution: Recent Progress and Open Questions
Sept. 28	Padmanabhan Seshaiyer	Mathematics George Mason University	Modeling, Analysis and Simulation of Coupled Problems in Science and Engineering
Oct. 5	Yuri Mishin	Physics George Mason University	Atomic structure and dynamics of grain boundaries
Oct. 12	Tom Wanner	Mathematics George Mason University	Homological Analysis of Complicated Random Patterns
Oct. 19	Harbir Lamba	Mathematics George Mason University	The Efficient Numerical Solution of Stochastic Differential Equations
Oct. 26	Alfa Heryudono	Mathematics University of Delaware	Numerical computations for the tear film equations in a blink cycle with spectral collocation methods.
Nov. 2	Alexandra Landsman	NRL	Some synchronization phenomena of nonlinear oscillators-Theory and Examples.
Nov. 9	Domenico Napoletani	Mathematics George Mason University	Augmented Sparse Reconstruction of Protein Signaling Networks
Nov. 16	Dmitri Klimov	Bioinformatics and Comp. Biology George Mason University	Mechanical dissociation of amyloid fibrils
Nov. 30	Alina Alexeenko	School of Aeronautics and Astronautics Purdue University	Thermally Driven Microflows: Phenomena and Modeling Approaches
Dec. 7	Ernest Barreto	Physics and Krasnow Institute George Mason University	Synchronization in interacting populations of oscillators

Applied and Computational Math Seminar