# Past Events

**Dec 2:** Matthew Derr, Ph.D. R'10, Directer in the Center for Machine Learning at Capital One

Title: *There and Back Again: Reflections Along One Spider’s Journey*

Abstract: Come hear Dr. Matt Der, a 2010 Math & CS alumnus, reflect on his journey and lessons learned from UR, to UC San Diego and Google, to Richmond-based startup Notch, to Capital One ... and finally fulfill his dream of returning to UR as a Math & CS colloquium speaker.

**Nov 18**: Heather Russell, Assistant Professor of Mathematics, University of Richmond

Title: *A Graph Coloring Reconfiguration System*

Abstract: A reconfiguration system provides a convenient framework for studying the structure of the set of all solutions to a given problem. In this talk, we will explore one such system related to graph coloring. In particular, we will focus on the current work being done by our UR research group exploring connectivity properties of graph coloring reconfiguration systems. We will also demonstrate software the group has developed to aid in visualization and conjecture testing. No prior knowledge of graphs is necessary. We will begin with the definition of a graph and give lots of examples along the way! (This work is joint with Drs. Prateek Bhakta and Sara Krehbiel as well as UR students Rachel Morris, Aalok Sathe, Wesley Su, and Maxine Xin.)

**Oct 22** Note this is a Tuesday, 4:30 pm, Jepson Hall 109

Gretchen Matthews, Professor of Mathematics, Virginia Tech

Title: *The Amazing Cryptography Race *

Abstract: How do we store private information? How do we communicate information securely? Answers to these questions are changing as computational capabilities change. Addressing them is vital not only to our national security but also our everyday existence, impacting commerce, healthcare, and the ways we interact with one another. Quantum computing poses a threat to current encryption schemes, such as RSA and elliptic curve cryptography, which underpin nearly all digital transactions. Public key encryption as we know it succumbs to Shor’s Algorithm, making a replacement necessary. For this reason, the National Institute of Standards and Technology (NIST) has issued a call for cryptosystems which are post-quantum secure, meaning are resilient in the face of quantum algorithms. We share modernizations of McEliece’s 1978 code-based cryptosystems which are based on polynomials and provide robust post-quantum security for classical information.

**Sep 23: **Jonathan Jedwab, Professor of Mathematics, Simon Fraser University

Title: *New Constructions of Difference Matrices*

Abstract: "Difference matrices are a type of combinatorial design that is closely connected to many other objects from design theory and algebra, including orthogonal arrays, transversal designs, mutually orthogonal Latin squares, and orthogonal orthomorphisms. The study of difference matrices has received renewed interest following the recent discovery that they can be used to construct linking systems of difference sets and so provide new examples of linked symmetric designs and cometric association schemes.

I shall show that there are special examples of difference matrices in abelian groups that can be concisely encoded using a much smaller matrix. This is analogous to the use of a generator matrix to represent a linear code in coding theory. I shall show that several of the principal previous constructions of difference matrices can be stated and proved much more simply in terms of these smaller matrices. I shall then present four examples of difference matrices in abelian groups having twice as many rows as the best previously known, each of which gives rise to a new infinite family of examples."

Joint work with Koen van Greevenbroek.

**Sept 2 Spotlight on Student Research**

Researchers: Maggie Dong, Steven "Rumo" Zhang, Andre Shannon, Nathan Lyell, & Ziheng "Bill" Shen.

*Frames and Applications*

Mentor, Dr. William Ross

Researchers: Kartikey Sharma, Jackson McAtee, Scarlett Sun, Jackman Liu, Connor Kissane, & Calvin Reedy

*Error Correcting Codes from Difference Sets*

Mentor, Dr. James Davis

Researcher: Vadim Kudlay

*Simulation Visualization in R*

Mentor, Dr. Barry Lawson

Researchers: Tengjie Tang & Ran Yan

*Population Biology, Pest Management, and Cooperative Games*

Mentor, Dr. Michael Kerckhove

**Sept 16 Spotlight on Student Research**

Researchers: Jing Dong, Stephen Owen, Max Wallach, & Wenqi Xiao

*Crafting Adversarial Examples for Automatic Voice Processing Systems*

Mentor, Dr. Doug Szajda

Researchers: Matthew Robinson & Yichang “Sam” Xu

*Modeling the Dynamic of C.difficile Infection in the Human Colon*

Mentor, Dr. Lester Caudill

Researcher: Rachel Morris

*Constructing Phylogenetic Networks*

Mentor, Dr. Heather Russell

Researchers: Ahsan Suheer Ahmad & Mahad Bhatti

*Mining Arguments in Twitter: Recognizing Premise Tweets for Claim Hashtags*

Mentor, Dr. Jon Park

Researchers: Aalok Sathe & Wesley Su

*Coloring graphs: Computation and Visualization*

Mentor, Dr. Prateek Bhakta

# 2018–19 Colloquium Series

**April 15:** **Raymond Cheng,** Old Dominion University, Department of Mathematics & Statistics

**Title**: **A Fun Exercise in Probability**

**Abstract:** We'll look at several dramatically different approaches to solving a simple problem involving coin tosses.

**April 22:** **Honors Students** take Center Stage. Join us as computer science honors students **Tuan Le**, **David Qin**, and **Hanglin "Jojo" Zhou** present their theses.

**April 1: Greg Morrisett,**Cornell, Dean of Computing and Information Sciences

**Title: Securing Software through Proof Engineering**

**Abstract:** The computers upon which we all depend, from laptops to servers to cell phones to embedded controllers, run software that is full of bugs. Today, attackers find it relatively easy to exploit these bugs to gain access and control of these computers. Is there anything we can do to substantially change this landscape? One promising approach is based on machine-checked proofs of safety, correctness, and/or security. I’ll discuss some of the recent research advances that show why we think this is a promising approach, and what challenges still remain.

**March 18: Larry Leemis**, 2019 Gaines Chair in Mathematics and Professor of Mathematics at the College of William & Mary

**Title:** *A Probability Calculator, Football Field Position, and Confidence Intervals*

**Abstract: ** This talk considers three topics in stochastic modeling. The first is using a computer algebra system to perform probability calculations. The second is how to visualize a mixed type random variable (part discrete and part continuous), illustrated by the field position in football after a kickoff. The third considers ongoing work in finding a confidence interval for the Bernoulli parameter and finding a confidence region for the parameters in a two-parameter univariate probability distribution.

**March 4: Emily Dodwell,**AT&T Labs

**Title:** **From Theory to Practice: A Machine Learning Use Case for Advertising at AT&T**

**Abstract:** Emily Dodwell, a Senior Inventive Scientist in the Data Science and AI Research Organization at AT&T Labs, will present a recent project to develop a machine learning-based media targeting strategy for television advertising campaigns. Emily will discuss the computational challenges inherent in the scale of training data, potential solutions her team considered to tackle the business problem, as well as theoretical intuition for the final two machine learning algorithms they chose to compare for implementation.

**January 28: Laura Ellwein-Fix, **Virginia Commonwealth University, Department of Mathematics

**Title: Parameter Identifiability of a Respiratory Mechanics Model in an Idealized Preterm Infant**

**Abstract: ** The complexity of mathematical models describing respiratory mechanics has grown in recent years to integrate with cardiovascular models and incorporate nonlinear dynamics, but has rarely been studied in the context of patient-specific observable data. This study investigates parameter identification of a previously developed nonlinear respiratory mechanics model tuned to the physiology of 1 kg preterm infant, using local deterministic sensitivity analysis, subset selection, and gradient-based optimization. The model consists of 4 differential state equations with 34 parameters to predict airflow and dynamic pulmonary volumes and pressures generated under six simulation conditions. The relative sensitivity solutions were calculated with finite differences and a sensitivity ranking was created for each parameter and simulation. Subset selection found independent parameters that could be estimated for all six simulations. The combined analysis produced a subset of 6 independent sensitive parameters identifiable with observable data. Optimizations performed using pseudo-data with perturbed nominal parameters estimated parameters within 5% of nominal values on average, demonstrating the feasibility of studying patient-specific infant data with these methods.

**November 26: Neal Bushaw,** Virginia Commonwealth University, Department of Mathematics

**Title: Turán Numbers and their Variants**

**Abstract: ** Among the oldest questions in extremal graph theory lies a gem: For an n-vertex graph, how many edges can a graph possibly have while avoiding a particular subgraph? This problem dates back to the 1930s, and when it was answered (for complete graphs) by Pál Turán in the 1940s, the 'Turán Number' was born; given a graph G and a natural number n, we define the Turán Number as the maximum number of edges among all n vertex graphs with no subgraph isomorphic to G. This problem not only has application within graph theory, but within other areas of mathematics and science.

In this general audience talk we'll talk about the history of graph theory in general, and this question specifically, as well a simple variation which leads to my own research ('What if instead of forbidding all copies of G, we allow one or two or ten?'). No graph theory background will be assumed -- I'll start by defining a graph, and build everything from there.

**November 14: David Mimno,** Cornell University, Information Science, Computing and Information Science ****Special Wednesday Session****

**Title:** **Putting the Data in Data Science**

**Abstract: "**One of the most powerful conceptual tools in computing is abstraction. If you can recognize a class of problems that all share the same form, you can apply the same solution over and over. But this same power is also dangerous. We are tempted to put all of our attention on algorithms and treat data sets as interchangeable. I will describe several case studies in which small variations in input data can have surprisingly large impacts on the resulting outputs. I argue that data care -- far from being a trivial or menial task -- is often the most impactful part of a data science process."

**November 12**: **Juraj Foldes,** University of Virginia, Department of Mathematics

**Title:** **Statistical Solutions of Differential Equations**

**Abstract:** Many mathematical models possess very complicated or chaotic dynamics with solutions being extremely sensitive to parameters. In such situation, it is not feasible to follow one solution, but it is more practical to look at statistical properties of solutions. Famous complex systems arise in fluid dynamics, where two dimensional turbulent flows for large Reynold’s numbers can be approximated by solutions of incompressible Euler’s equation. As time increases, the solutions of Euler’s equation are increasing their disorder; however, at the same time, they are limited by the existence of infinitely many invariants. Analogously as the equilibrium statistical states are obtained in thermodynamics, we assume that the dynamics tend to limit profiles which maximize an entropy given the values of conserved quantities. These profiles, described by methods of Statistical Mechanics, are solutions of non-usual variational problems with infinite number of constraints. We will show how to analyze the problem and we will derive symmetry properties of entropy maximizers on symmetric domains. This is a joint work with Vladimír Šverák (University of Minnesota).

**November 9**: **Evgenia Smirni,** College of William and Mary, Computer Science Department **** Special Friday Session in Business School Room 114 at 4:00 PM ****

**Title: Getting a PhD in Computer Science: Myths and Facts**

**Abstract:** A PhD in Computer Science can open doors to incredible career opportunities in academia or industry, such as corporate university R&D jobs, faculty positions, hi-tech startups, and senior-level product development, to name a few. However, enrolling in a graduate program is an impactful decision with life-changing consequences, and as a result, must be taken with as much information as possible. In fact, CS juniors and seniors may have numerous questions regarding a PhD: “Why should I get a PhD?”, or “How will a PhD help my career?”, or “Where should I get my PhD from?”, or "How are my Ph.D. studies going to be funded?". This talk is designed to especially answer such questions.

This talk will provide students with critical information on getting a graduate degree in CS, and the benefits of doing so at William & Mary. First, I will describe what a CS PhD entails, and demystify the myths and facts about getting a PhD. I will also discus the factors one must consider when selecting a PhD program. I will then provide information on William & Mary (W&M), and specifically, the research strengths of the Computer Science department at W&M. Towards the end, students will have an idea on what it is like to get a PhD in CS, and specifically, what it would be like to get a PhD at W&M CS.

**November 5**: **Doron Levy,** University of Maryland, Department of Mathematics

**Title**:**The Role of the Immune Response in Chronic Myelogenous Leukemia**

**Abstract:** Targeted drugs have significantly improved treatment of chronic myelogenous leukemia (CML). Yet, most patients are not cured for undetermined reasons. In this talk we will describe our work on modeling the immune response to CML, the goal being to harness the immune response to better improve therapies. Along the way, we will discuss some our results on cancer vaccines, drug resistance, and cancer stem cells. We will also emphasize the necessity of integrating a mixed bag of mathematical tools in order to address complex biological problems.

**October 29**: **Lincoln Mullen,** George Mason University, Department of History & Art History ****LOCATION CHANGED TO JEPSON 118****

**Title: Finding Biblical Quotations in Historical Newspaper Corpora**

**Abstract:** "America's Public Bible" is interactive work of digital scholarship that identifies quotations of the Bible in U.S. newspapers. This talk will explain how the project works from a computational perspective, including the challenges of finding quotations, working with historical corpora, and creating the website. It will also discuss how those computational methods connect to research questions in American religious history and religious studies. The site enables a disciplined serendipity that turns up new and unusual examples that one would be unlikely to find with more traditional methods, but which also rigorously contextualizes those examples. This method helps researchers make better evaluations of whether the phenomena under study are typical or unusual.

**October 22**: **Zerotti Woods,** University of Georgia, Department of Mathematics

**Title**: *The Effects of Ill Conditioning in Neural Network*

**Abstract:** "Deep Neural Networks have shown much success in solving problems in a diverse set of applications (i.e. computer vision, computational biology, finance, etc). Although we have proof about universal approximation of these networks the problem of training them is known to be very difficult. The ill conditioning of the hessian has been shown to be one of the sources of this difficulty. In this talk we will discuss problems and neural network architecture that causes a ill conditioned hessian. I will also discuss how this can interplay with analysis of high frequency telemetry data taken from a malaria infection on Non Human Primates."

**October 8: Dominique Guillot,**University of Delaware, Department of Mathematical Sciences

**Title:** **Positivity Preserver Problems**

**Abstract: "**Determining which transformations map the set of positive semidefinite matrices into itself is a classical problem that continues to attract a lot of attention. I will give a historical account of matrix positivity and of operations that preserve it, and will discuss several applications of positivity preservers in geometry, combinatorics, and statistics. The talk should be accessible to anyone with a basic knowledge of linear algebra and calculus."

**September 10: Student Summer Research Presentations II**

Stephen Owen, Berke Nuri, Abhishek Shilpakar (Doug Szajda, mentor); Sophie Borchart, Palmer Robins, Jonathan Rodriguez (Jory Denny, mentor); Caleb Brooks, Aaqil Zakarya (Jory Denny, mentor); Basil Arafat (Jory Denny, mentor); Jojo Zhou (Jory Denny, mentor); Michael Bonifonte (Lewis Barnett, mentor); Hammed Hassan (Lewis Barnett, mentor)

**September 3: Student Summer Research Presentations I**

Diksha Kataria, Xinxuan Zhang, Shiyi Wang, Alamby He (Paul Kvam, mentor); Salar Ather (Taylor Arnold, mentor); Shuzhi Zeng & Nayzaw Aung Win (Lester Caudill, mentor); Maxine Xin (Prateek Bhakta, mentor); Sinan Kivanc (Prateek Bhakta, mentor); Miles Clikeman (Heather Russell, mentor)

September 4: Student Research Presentations

Team mentored by Jory Denny: Ryan Jennings, Tracy Nguyen, Are Oelsner

Team mentored by Jory Denny: David Qin and Aaqil Zakarya

Team mentored by Bill Ross: Raymond Cao, Tongzhou Wang

Team mentored by Mike Kerckhove: Devin Chen and Finnegan Hu

Team mentored by Mike Kerckhove: Hassan Naveed and Ran Yan

September 18: Student Research Presentations

Team mentored by Lewis Barnett: Guanlin He, Ruojing Jia, Yuetong Li, Lillie Mucha, and Tianchang Yang

Team mentored by Lewis Barnett: Thang Le and Bilawal Saikh

Mentored by Doug Szajda: Alec Justice

Mentored by Doug Szajda: Rachel Culpepper

Team mentored by Doug Szajda: Nicholas Wan and Rishabh Jain

Mentored by Prateek Bhakta: Michael Del Casino

October 9: Dr. Rachel Cummings, Georgia Institute of Technology

The Price of Privacy: Experimental Evidence for the Value of Privacy

October 30: Craig Larson, Associate Professor, Department of Mathematics and Applied Mathematics, Virginia Commonwealth University

The Graph Brain Project

November 13: Suzanne Robertson, Assistant Professor, Department of Mathematics and Applied Mathematics, Virginia Commonwealth University

Modeling and Control of Enzootic West Nile virus Transmission: Incorporating Avian Stage-dependent Vector Exposure

November 27: Robin Givens '06, Professor of Computer Science, Randolph Macon College

Sensor Placement Problems: Mixed-Weight OLD-sets

February 28: Ryan Cordell, Assistant Professor of English, and David Smith, Assistant Professor of Computer & Information Science, Northeastern University

Speculative Bibliography: Probabilistic Texts, Page Maps, and Propagation Networks

March 5: Bernadette Mullins, Professor of Mathematics, Chair of Wadsworth Area, Birmingham-Southern College

The Josephus Problem

March 19: Peter Hastings, Associate Professor, School of Computing, DePaul University

Identifying Causal Structure in Scientific Explanatory Essays

March 26: Jyh-Ming Lien, Associate Professor, Department of Computer Science, George Mason University

Making Shapes Easily Foldable

April 23: Student Research: David Clayton, Format Transforming Encryption

Mentor: Dr. Doug Szajda

August 29: Student Research Presentations

Team mentored by Dr. Kathy Hoke and Dr. Joanna Wares: Shuyi Chen, Tatum Dam, Devika Jhunjhunwala, Sinong Li, Quinn McDonough, Harrison Wenzel, Tianyuan (Patty) Zhang, Xinyi (Julie) Zhu, Chong Hui (Devin) Chen, Camryn Travis

Team mentored by Dr. Paul Kvam: Tongyu (Stephanie) Wang and Zezhong Chen

Team mentored by Dr. Michael Kerckhove: Ying Wu, Yiwen Wang, Xiaoting (Cecelia) Sun, Joshua Hayes, Nasheya Rahman, Solomon Quinn

August 30: Student Research Presentations **
** Team mentored by Dr. Lester Caudill: Ashley Alex and Rachel Lantz

Mentored by Dr. James Davis: David Clayton

Mentored by Dr. Arthur Charlesworth: Anh Tran

Team mentored by Dr. Doug Szajda: Salar Ather, Joseph Mugisha, Rachel Culpepper, Renae Taylor, Tanner Bina, Alec Justice, & Yunwen "Nicholas" Wan

September 2: Brett Csorba ’14, Information Security Software Engineer at GE, and Jake Kurzer ’10, Lead Software Engineer at Leidos

Title: System and Method for Determining String Similarity

October 3: **Patrick G. Traynor**, R'02, associate professor of computer and information science and engineering, University of Florida

Title: Who Do I Think You Are? Challenges and Opportunities in Telephony Authentication

October 5: All About Computer Science Internships

Presenters: Kevin Chen, Dinc Ciftci, and Kelly Farley

October 17: Ami Radunskaya, visting professor of mathematics from Pomona College

Title: Of Mice and Math

October 24: Christian Fong, Stanford Graduate School of Business

Title: Limited Obstruction with Monopoly Agenda Setting

November 4: Gieri Simonett, professor of mathematics, Vanderbilt University

Title: Moving Surfaces in Geometry and Physics

November 7: Bill Ross, professor, Richardson Chair of Mathematics, University of Richmond

Title: Matrices and the Shadows of Plato’s Cave

November 14: Nathan Alexander, assistant professor of teacher education, University of San Francisco

Title: Inclusive Pedagogies in STEM+C

November 21: Ami Radunskaya, visiting professor of mathematics from Pomona College

Title: The Sound of Chaos

January 30: Eric Brunvand, associate professor, School of Computing, University of Utah

Title: A Tale of Two Rendering Algorithms: Ray Tracing, Rasterization, and their Supporting Hardware

March 20: Ivan Blank, associate professor of mathematics, Kansas State University

Title: The Obstacle Problem and Connections to Mean Value Theorems in Elliptic PDEs

March 22: Sara Krehbiel, assistant professor of computer science, University of Richmond

Title: Privacy and Randomness: Defense Against the Dark Arts

March 27: Barry Lawson, professor of computer science, and Malcolm Hill, professor of biology, University of Richmond

Title: An Agent-Based Simulation Model of Sponge: Algae Symbiotic Relationships * *

April 10: Sommer Gentry, professor of mathematics, United States Naval Academy

Talk title: Faster, Safer, Healthier: Adventures in Operations Research

April 17: Student Research Presentations

David Clayton, Almost Difference Sets

Gi Heung “Robin” Kim, Differential Privacy for Growing Databases

April 19: Student Research Presentations

Greg Hamilton, Quantum Groups and Knot Invariants

Anh Tran, Toward a Scientific Investigation of Convolutional Neural Networks

Fiona Lynch, Differential Equations Models of Single- and Multi-Organ Tissue Damage

August 31: Math Summer Research Presentations

Presenters: Ashley Alex, Sam Bell, Matthew Brinard, Becky Chen, Zezhong Chen, David Clayton, John Clikeman, Nicole Devine, Becca Funke, Mark (Minuk) Kim, Fiona Lynch, Sami Malik, David Painter, Alexandru Pana, Nasheya Rahman, Utaipon Tantipongpipat, Shiv Toolsidass, Edison (Zhixiang) Wang, Sihan Wang, Tongyu (Stefanie) Wang, Ningxi Wei, Bannong Zhang

September 7: Computer Science Summer Research Presentations

Presenters: Hadi Abdullah, Alex Beman, Guanyu (Robin) Chen, Andy Choi, Dinc Ciftci, Michael Dombrowski, Omar Farooq, Will Gross, Yuxuan (Jennifer) He, John Keto, Dong (David) Kim, Robin Kim, Kyong Lee, Christian Olaya, Lingmiao Qiu, Anh Tran, Radha Venkatesan

September 14: Internships Panel

Presenters: Georgi Lekov, Amy Shick, and Jackson Taylor

October 5: Dr. C. Allen Butler Daniel H. Wagner Associates, Inc.

Title: Bayes' Theorem-Making Rational Decisions in the Face of Uncertainty

November 2: Dr. Isabelle Chalendar, Maître de Conférence in the Institut Camille Jordanat the University of Lyon I

Title:Phragman-Lindelof Principles and Applications

February 29: Dr. Oliver Dasbach, Louisiana State University, Mathematics

Title: Dimers and Knot Theory

March 14: Dr. Jonathan Jedwab, Simon Fraser University, Mathematics

Title: What is a Research Mathematician?

March 25: Dr. Margaret Martonosi, Princeton University, Computer Science

Title: Internet of Things: The History, The Hype, and The Hope

March 28: Dr. Jana Gevertz, The College of New Jersey, Mathematics & Statistics

Title: Using Mathematics to Understand Anti-Cancer Drug Resistance at Metastatic Sites

April 11: Dr. Mohammed Abouzaid, '02, Columbia University, Mathematics

Title: Polynomials, Polyhedra, and Algebraic Varieties

April 18: Honors Students Presentations

Presenters: Becca Funke, Jackson Taylor, and John Clikeman

April 20: Honors Students Presentations

Presenters: Minuk "Mark" Kim & Uthaipon "Tao" Tantipongpipat

September 1: Student Summer Research Presentations-Mathematics

Presenters include:

Hilary Briggs, Cathy Shi, Xiwen Zhou, Weizhi Wu, Melisa Quiroga-Herra, Amber Young (Mentors Dr. Kathy Hoke & Dr. Joanna Wares)

Tedi Aliaj, Sam Bell, John Clikeman, Hayu Gelaw, Uthaipon Tantipongpipat (Mentor Dr. Jim Davis)

Fiona Lynch (Mentor Dr. Lester Caudill)

Yi Guo and Zezhong Chen (Mentor Dr. Bill Ross)

Ningxi Wei and Xinchun Liu (Mentor Dr. Della Dumbaugh)

September 8: Student Summer Research Presentations-Computer Science

Presenters include:

Ahn Tran (Mentor: Dr. Charlesworth)

Marie Fernandez (Mentor: Dr. Lawson)

Francisco Cuevas and Lingmiao Qui (Mentor: Dr. Shaw)

Jennifer He, Andy Choi, Hadi Abdullah, Omar Farooq, John Keto, Alex Beman (Mentor: Dr. Szajda)

October 27: Dr. Craig Larson, Assistant Professor of Mathematics and Applied Mathematics, Virginia Commonwealth University

November 3: Dr. John Conway, Professor of Mathematics, George Washington University

Title: Matrices and Topology

November 10: Dr. Laura Miller, Associate Professor of Mathematics at University of North Carolina-Chapel Hill, Department of Applied Math and Biology

Title: The Fluid Dynamics of Jellyfish Swimming and Feeding

Title: An Agent-Based Modeling Approach to Reducing the Transmission of Multidrug-Resistant Organisms in Healthcare Facilities

March 23: AfterMaths: Perspectives on Education & Careers

Erin Abouzaid, W ‘02

Chief Investment Officer, Stony Brook Foundation

James Tripp, R’01

Technical Director, Department of Defense

March 30: Dr. Edward Saff, Professor of Mathematics, Director of Center for Constructive Approximation, Vanderbilt University**
** Title: Minimal Energy, Soccer Balls, and Bagels

April 6: Dr. Ryan Vinroot, Assistant Professor of Mathematics, College of William and Mary

Title: Counting in Finite Vector Spaces

April 13: Taylor Applebaum '13 and Keefer Taylor '13, Software Engineers at Google

April 24: Dr. Della Dumbaugh, Professor of Mathematics, University of Richmond

Title: It's possible: The Biography of a Book

September 9: Student Summer Research Presentations

Students: Becca Funke, Ningxi Wei, John Clikeman, and Gavin McGrew (Faculty Mentor: Dr. James Davis)

Title: Constructions of Bent functions on 8 variables

Students: Natalie Pollard and Jackson Taylor (Faculty Mentor: Dr. Barry Lawson)

Topic: Investigating the "Consistent Programmer Hypothesis".

Students: Erin Geoghan, Kevin Erb, Richuan Hu (Faculty Mentor: Dr. James Davis)

Title: Difference sets in groups of order 256

September 16: Student Summer Research Presentations

Student: Jocelyn Xue (Faculty mentor: Dr. William Ross)

Title: Smashing Algebras of Toeplitz Matrices

Student: Josh Fagan (Faculty mentor: Dr. Arthur Charlesworth)

Title: Deep Neural Nets Containing Restricted Boltzmann Machines

Student: Georgi Lekov (Faculty mentor: Dr. Kelly Shaw)

Title: Software Optimization: Determining the Best Processor Architecture for an Application

Student: Nicholas Taylor (Faculty mentor: Dr. Lewis Barnett)

Title: Identifying Bird Species from Digital Images

September 23: Deloitte Consulting

Presenters:

Maria Nazareth, Senior Manager - Information Systems Management

Adam McCann, Specialist Master - Information Systems Management

Supporting Presenters:

Pete Holland, Consultant, UR Class of 2010 – Business Administration (Finance and Economics)

Sarah Gehrke, Consultant, UR Class of 2011 – Political Science; Economics

Danielle Taylor, Analyst, UR Class of 2013 – Chemistry; Leadership Studies

Title: A Data Driven Future - Deloitte Analytics

September 30: Student Summer Research Presentations

Student: Beknazar Abduvaliev (Faculty Mentor: Dr. Michael Kerckhove)

Title: Mathematical Models of Bounded Rationality.

Student: Nianchen Han (Faculty Mentor: Dr. Joanna Wares)

Title: “Collectivism” or “Individualism”? The Differential Equation Model vs the Agent Based Model

Student: Uthaipon (Tao) Tantipongpipat (Faculty Mentor: Dr. James Davis)

Title: Ebert's Hat Game with More Than Two Colors

October 28: Van Nall, professor of mathematics at UR

Title: Topology and Dynamical Systems

November 4: Karen Saxe, AAAS/AMS Congressional Science and Technology Policy, professor of mathematics at Macalester College

Title: A Mathematical Adventure through the Census, Reapportionment, and Re-districting

November 11: How to land and succeed in an internship at Google or Goldman and Sachs

Taylor Applebaum and Andreea Iovan will talk about their experiences this summer as a Software Engineering Intern at Google and Technology Analyst Intern at Goldman Sachs.

November 18: Ann Oberg, professor of biostatistics at the Mayo Clinic

February 13: Duo Jiang, University of Chicago

Title: Linking genes to diseases: how statistics come into the game

February 24: Dr. Karen Parshall, UVA

Title: Toward Algebra as a General Problem-Solving Technique: Renaissance Developments from Rafael Bombelli to François Viète

March 3: Judy Kennedy, professor of mathematics at Lamar University

March 26: Jim Yorke

April 14: Judy Kennedy, professor of mathematics at Lamar University

April 21: Jocelyn Xue and Hershey He

Title: Algebras of Toeplitz operators and matrices

September 4: Dr. James A. Davis, Professor of Math and Computer Science (University of Richmond)

Topic: Patent Lawsuit of the Century (Apple vs. Samsung): A Personal Story

September 10: Student Summer Research Presentations

Student presenters include Andreea Iovan (CMSC/MATH), Brett Csorba (CMSC), Dayton Steele (MATH), and Garrett Steele (MATH).

October 1: Mary Ann Horn, National Science Foundation & Vanderbilt University

Topic: Using Mathematical Modeling to Understand the Role of Diacylglycerol (DAG) as a Second Messenger

October 8: Student Summer Research Presentations

"Detecting Malicious Javascript," Taylor Applebaum, Tyler Barnett, Nunzio Cicone, Mark Dacek, Nick Daniel, Richuan Hu, Tyler Morgan, Nate Swanson, and Victor Yang

"Turing Patterns via Agent-Based Models," Josh Armstrong, Josh Fagan, Kirstin Ladas, Gavin McGrew, and Rosa Romano

November 6: Raymond Cheng, Old Dominion University

Title: Mate Search Strategies

November 12: Michael Dorff, Brigham Young University

Title: Shortest paths, soap films, and mathematics

February 11: Jim Cogdell, Ohio State University

Title: Zeta Functions!

February 18: Mike Pohl, Google

Title: Do Cool Things That Matter: Detecting Adversarial Ads in the Wild

March 4: Dr. Tihomir Kostadinov, UR Department of Geography and the Environment

Title: A 3-D Earth Orbit Model: Visualization and Analysis of Milankovitch Cycles and Insolation

April 1: Professors Jim Davis and Bill Ross (UR Department of Mathematics and Computer Science)

Title: Almost True: Two Tales of Failure in Mathematics

April 17: Student Honors Thesis Presentations

Natalie Clark: "Mathematical Models of Plasmid Dynamics"

Dayton Steele: "Power Distribution in the European Union"

April 22: Student Honors Thesis Presentations

Taylor Applebaum: "Difference Sets"

Gage Holden: "PyAM: Investigating Analogic Reasoning"

September 19: Employee Panel, Capital One

October 17: David Sherman, University of Virginia (math)

October 24: Richard Hammack, Virginia Commonwealth University (math)

November 4: Reza Sarhangi, Professor, Department of Mathematics, Towson University

November 7: Avis Cohen, The Institute for Systems Research at the University of Maryland, College Park

November 14: Josh Ducey, James Madison University

November 22: Evamaria Terzi, Boston University

November 28: Andrew White, University of North Carolina-Chapel Hill

January 30: David Evans, UVA Department of Computer Science

Title: Computing Cooperatively with People You Don't Trust

February 13: Ross Gore, UVA Department of Computer Science

Title: Statistical Debugging for Scientific Exploration Software

February 20: Stephen R. Wassell, Sweet Briar College Department of Mathematical Sciences

Title: Edge-length ratios between dual Platonic solids

February 29: Ken W. Smith, Sam Houston State University Department of Mathematics & Statistics

September 6: Student Summer Research Reports

“Application of Wavelet Transforms,” Patty Laverty, Will Lambdin, Sadia Gado Alzouma

“Data Communication in Single-Chip Multi-Processors,“ Toma Pigli

“Graphics-Based, Event-Driven Simulation Programming,“ Emily Nelson

“Streamlining Homology Assignment Using Maximum Likelihood Phylogenies,” Gage Holden, Rachael Gunn

September 13: Student Summer Research Reports

“Game Theory and Network Defense,” Linghan Song, Winston West

“Coding Theory: Second Order Nonlinearity,” Matt Der, Alex Martin, Gavin McGrew, Kate Pitchford, Taryn Smith, Francesco Spadaro, Joshua Wilson, Kathryn Utz

“From Graphs to Determinants to Matrices,” Samantha Campbell, Yiran Duan, Max Grinchenko, Hristiyan Hristov,

“Choosing Courses through a Collaborative Recommendation System,” Keefer Taylor

September 20: Andreas Hartmann, Université Bordeaux and Gaines Visiting Professor at the University of Richmond

Title: Signals, Interpolation and Sampling

October 4: Andreas Hartmann, Université Bordeaux and Gaines Visiting Professor at the University of Richmond

Title: Interpolating infinitely many values

October 13: Holly Gaff, Virginia Modeling, Analysis, and Simulation Center, Old Dominion University

Title: Modeling Control of Tick-Borne Diseases

October 27: Jennifer Steele, York University

Title: Stereotype threat: What is it? Can it be overcome? And what does it mean for women – and men – pursuing careers in math and science?

November 3: Frédéric Gaunard, Université Bordeaux

Title: Control Theory and links with Paley-Wiener Spaces

November 8: Frédéric Brechenmacher, CNRS - Institut de Mathématiques de Jussieu, Paris & Laboratoire de Mathématiques Lens. Univ. Lille-North of France

Title: The 1874 Controversy between Camille Jordan and Leopold Kronecker

March 14: Katybeth Lee, Career Development Center and Dr. Mike Kerckhove, Associate Professor of Mathematics, University of Richmond

Title: Pi Day Celebration: When Will I Use Math?

March 21: Eve Torrence, Randolph-Macon College

Title: Plugging the Holes in Lewis Carroll's Condensation Method

March 28: Mike Pohl, Google

Title: Detecting Adversarial Advertisements in the Wild

April 11: Eric Marland, Appalachian State University

Title: The Value of Carbon: A Hoppameleon Study

April 18: Jeff Zheng, '11

Title: Rank One Perturbations of Self-Adjoint Operators and Applications

September 7: Summer 2009 Research Students

September 28: Stephan Garcia, Pomona College, Claremont, California

Title: Hidden Symmetries in Everyday Operators

October 19: Sara Sprenkle, Washington and Lee University, Lexington, Virginia

Title: Customized Oracles to Automatically Detect Faults in Web Applications

November 5: Andy Dorsett, Wolfram Research, Inc.

Title: Mathematica

January 18: LURE Summer 2010 Research Informational Meeting

February 15: Alex Dugas, University of Richmond, Richmond, Virginia

Title: Representations, Quivers and Dynkin Diagrams

March 1: Barry Cobb and Atin Basu Choudhary, Virginia Military Institute, Lexington, Virginia

Title: A Decision Analysis Approach to Solving the Signaling Game

March 15: Rebecca Weber, Dartmouth College, Hanover, New Hampshire

Title: What is Computability Theory?

March 22: Kim Hazelwood, University of Virginia, Charlottesville, Virginia

Title: A Case for Runtime Adaptation Using Cross-Layer Approaches

March 16: Raina Robeva, Sweet Briar College

Title: Mathematical Models for Systems Biology and Gene Regulation

March 25: David Nicol, University of Illinois, Urbana-Champaign

Title: Tradeoffs Between Model Abstraction, Execution Speed, and Accuracy in Simulation

March 30: Paul Huray, University of South Carolina

Title: Signal Integrity: The secret to making computers more reliable, faster and cooler

Monday, April 13: Simon Levy, Washington and Lee University

Title: Hyperdimensional Cognitive Computing: A New Approach to Some Very Old Problems

Tuesday, April 21: Hannah Callender, University of Minnesota, Institute for Mathematics & Its Applications

Title: Adventures in Biomath: From Cell Signaling to Motility