The Department of Mathematics and Computer Science has a very active Colloquia series, bringing in speakers in mathematics, computer science, data science, business, and pedagogy. All are welcome. Keep an eye here or on our facebook page for announcements of upcoming talks. Several of the presentations can be found on our youtube page as well!
March 20, 2017
Presenter: Daniel Foreman, Education Technology Consultant, Fuel Education, LLC
Title: Innovating Education: The Noble Path Less Chosen
Abstract: Today’s society is riding the fourth wave of the industrial revolution and what the future holds for us is unclear. One glaring issue in a society that changes rapidly with the advent of ubiquitous and powerful technology, is our educational system. Historically the public education system has been slow to embrace change. However, with the advent of new technologies and educational systems we must innovate and update with all diligent speed to ensure we meet the needs of current students as they move to become the leaders of our country. Now is the time for innovation and action to prepare our population for a rapidly shifting economy and social infrastructure. The educational technology sector is riding a wave of exploding investment and for individuals willing to take on the challenge the opportunities are endless.
February 20, 2017
Presenter: Brian Ervin '08, E.E. Ph.D. Candidate University of Cincinnati & Bioinformaticist at WPAFB
Title: x,y,z in all the wrong places: Computational neuroscience, graph theory, and bioinformatics.
Abstract: Explore what exists after graduating from Wittenberg's Math and Computer Science department. Entering the world of academic engineering research was dizzying, but I was always able to find solid ground in the underlying mathematics. This talk will introduce some research fields that I have worked in throughout my time in grad school, including signal processing, machine learning, genomics, parallel computing, and computational neuroscience.
February 6, 2017
Presenter: Dr. Edward White, Professor of Statistics, Air Force Institute of Technology
with Alex Gutman (Senior Statistician at P&G), Captain Gregory Brown (Chief of Cost Analysis for the Special Operations Forces & Personnel Recovery Division, WPAFB) AND Captain Caitlin Oviatt (Master's student in Logistics and Supply Chain Management)
Title: Statistics in the Real World
Abstract: Dr. White and his colleagues will discuss the practical application of, not only statistics, but also related “soft skills” in various fields of study, research and business. Most jobs in statistics involve more than just the numbers. To be successful requires the ability to communicate with clients, both verbally and in writing, and interpret their needs. It requires thinking beyond the numbers, being proactive and persistent and often, working as part of a team. The presenters will focus on sharing their personal experience to focus on what undergraduate students should be doing in and beyond the typical statistics classroom setting to ensure future success
January 23, 2017
Presenter: Dr. Doug Andrews, Professor of Statistics, Wittenberg
Abstract: R is a free, open-source programming language and environment for statistical computation and graphics. After a quick overview of R’s history and culture, I’ll demo some of R’s simpler capabilities – for basic math (including vectors and matrices), basic stat work, simulation, scraping data from internet sources, interactive graphics, documenting reproducible workflow, creating presentations, and data wrangling. Because R is a good tool for the emerging interdisciplinary field of data science, expect shameless plugs for Witt’s proposed new program in Data Science as well.
December 5, 2016
Presenter: Dr. Dan Pritikin, Professor of Mathematics, Miami University
Title: Math Sing-Alongs
Abstract: Bring your sense of humor and your best singing voice for this Math/CS colloquium with a “twist”. Dr. Dan will lead us in song with some famous pop hits - only the words have been changed to "parody lyrics" with mathematical content (something like Weird Al Yankovic material). Hopefully this will provide some needed stress relief prior to the final week of classes and final exams.
November 21, 2016
Presenter: Erin O'Brien
Title: Intelligence Analysis & Cyber Security at ATIC
Abstract: National defense, global security, the impact of technological and military advances in other nations, cyber security, and law enforcement analysis are focus areas of the Advanced Technical Intelligence Center (ATIC). Recruitment for the 2017 Analyst Boot Camp and Cyber Analysis Data Security programs is underway. Each program includes 10 weeks of classroom training with subject matter experts in the fields of intelligence analysis and cyber security. Following classroom training, students complete a 5-week experiential learning internship working real-world analytic projects. ATIC is seeking students pursuing degrees in: all STEM areas, computer science, foreign languages, political science, psychology, forensic accounting, criminal justice. This session will discuss how these training programs can complement your degree and create a pathway to a career as an intelligence analyst, cyber security analyst, or law enforcement analyst. Here is a link to get more information about the Intelligence Community and career opportunities throughout a few of the agencies: https://www.intelligencecareers.gov/
November 7, 2016
Presenter: Dr. Louis DeBiasio, Assistant Professor of Mathematics, Miami University
Title: What is the chromatics number of a graph?
Abstract: We will answer the question above, discussing everything from compiling computer programs, scheduling meetings, coloring maps, solving Sudoku puzzles, to “the fundamental theorem of extremal graph theory."
September 26, 2016
Presenter: Dr. Thomas Bitterman, Assistant Professor of Computer Science, Wittenberg
Title: Neural Nets and Deep Learning
Abstract: This talk covers the basics of neural nets and introduces one approach to deep learning. An introduction to the functioning of neural nets is provided, including coverage of weights and activation functions. The backpropagation learning algorithm for neural nets is described, and a mathematical basis is provided. Coverage concludes with a glimpse at the use of multi-layer neural nets to implement deep learning.
September 12, 2016
Presenter: Dr. William Higgins, Associate Professor of Mathematics, Wittenberg
Title: Trees for Values of the Span and Icaps for L(2,1) - Colorings
Abstract: An L(2,1)-coloring of a graph is a labeling of the vertices using non-negative integers so that labels of adjacent vertices differ by at least 2 and distance two vertices differ in label. An example is shown below. We define the invariants Span (related to the highest color used) and Icaps (related to the number of colors used) for L(2,1) colorings. We determine if there exist trees for each pair of possible values of Span and Icaps. This work was done (in collaboration with colleagues) while on leave at California Lutheran University.
May 2, 2016
Presenter: Stephen Stuthers, Wittenberg University
Title: Big Data Development @ Wittenberg
Abstract: In big data development, the vast amount of daily data that is generated by businesses offer significant opportunities for real-time results, allowing for faster and better informed decisions. using a C# ASP.NET model, I was able to develop real-time dashboards for Wittenberg's administration, faculty and staff.
Presenters: Kevin Egan, Wittenberg University
Title: Data Analysis of Springfield Promise Neighborhood
Abstract: Stat consulting service for Springfield Promise Neighborhood, determine the effectiveness of Promise Neighborhood on Lincoln Elementary students' growth and achievement scores. Comparisons made on students KRA, DRA, and OAA state testing. Using Springfield Promise Neighborhood exposure to determine the impact on learning outcomes.
Presenters: Carrie Kubasta, Wittenberg University
Title: Injury Patterns Among Witt Student- Athletes
Abstract: Data analysis was used in order to provide one of Wittenberg's own athletic trainers with some insights into the injuries she sees among her student-athletes. The goal here is to hopefully indicate areas where certain sports may need to focus more on injury prevention.
Presenters: Thomas Chuna, Wittenberg University
Title: Braiding with Matrices
Abstract: A look at hte injectivity of the Burau representation. The Burau representation is a map from the Braid group to the General Linear Group. We will consider if different hair braids are mapped ot hte same matrix when we evaluate the representation at a rood of unity.
February 22, 2016
Presenters: Dr. Doug Ward, Miami University
Title: Nonsmooth Analysis: Or, What Do You Set Equal to Zero When the Derivative Doesn't Exist?
Abstract: Many problems of optimization can be solved with the help of differential calculus. Optimization problems also provide a motivation for extending the calculus to cover functions that are not differentiable everywhere. In this talk, I will describe a generalization of the concept of derivative that is used in studying optimization problems.
February 8, 2016
Presenters: Bob Weishaar & Vadim Filimonov - Motorists Insurance
Title: The Actuarial Profession: Analytics in the Insurance Industry
Abstract: The use of analytics is rapidly expanding across all industries, and the insurance industry is no exception. One path to attaining and demonstrating competence in the field is by earning a designation from the Casualty Actuarial Society. In this presentation we provide an overview of the actuarial profession, including the skills needed, the types of problems being solved, and the steps to accreditation.
January 25, 2016
Presenter: Flavia Sancier-Barbosa
Title: Risk and War: Is a Good Offense the Best Defense?
Abstract: In this talk, we compare probabilities of conquering territories in the board games "Risk" and "War" (War is a variant of the famous game Risk). A rich set of mathematical and statistical tools are used, such as Markov Chains and Order Statistics. The conquering probabilities offer insight on whether aggressive or conservative strategies work best in each game.
November 9, 2015
Presenter: Emily Dennett, Assistant Professor of Mathematics, Central Ohio Technical College
Title: Collaboration and Technology in the Mathematics Classroom
Abstract: Throughout history collaboration and using technology has been an important part of mathematical discovery. However, students learning math often feel it is a solitary study of processes that have been set for many years. Emily Dennett, Assistant Professor of Mathematics at Central Ohio Technical College, is using collaboration and technology to bring life to her classroom and help her students more deeply understand mathematics. Emily will discuss how she has "flipped" her classes and why she believes helping students to collaborate and use technology is vital in mathematics education.
September 21, 2015
Presenter: Moez Ben-Azzouz
Title: A Mathematical Model of Animal Skin Patterns
Abstract: In this talk we will take a look at an early foray in mathematical biology conducted by a famous mathematician in the 1950s, the secret author will be revealed during the talk. We will explore the mathematical model in detail and discuss how well it described the formation of pattern and structure in nature, particularly in animal skin. Finally we will revel the model's impact on the field of developmental biology.
August 31, 2015
Presenter: Dr. Brian Shelburne
Title: Balanced Ternary Notation
Abstract: There is base 10 and base 2 and base 17 (hexadecimal) notation but why not base 3 (ternary) and in particular balanced ternary notation? We'll examine what balanced ternary notation is and how to add, subtract, multiply, divide and take square roots. There is some evidence that balanced ternary notation is the most efficient of numbering systems, the so called "Goldilocks" of numbering systems, in that "base 2 is too small" and "base 10 is too big" so "base 3 is just right"!
May 4, 2015 - Student Projects
Presenter: Margo Morton
Title: Mouse Analysis Software in Java
Abstract: Peromyscus mice are ubiquitous across North America, and are used widely in ecological research. However these species live in the same geographic areas and can be difficult to distinguish even by trained biologists. Morphological identification and genetic sequencing are two current methods of distinguishing these mice, but a third method, computer classification may provide the rigor and accuracy ecologists desire. Mouse analysis software was developed to take an image of a mouse, and run a four-point analysis of fur color, tail to to body ratio, ear to body ratio, and dorsal-ventral tail gradient in order to get a species classification. This software has been shown to decrease the implicit bias in morphological classification, and improves upon previous classification methods.
Presenter: Victor Glasgo
Title: A Geometric Analy7sis of Chord Progressions
Abstract: We are able to represent pitches numerically and can then examine relationships among them. My research sought to define a distance function in order to minimize voice leading distances between chords. My research also included creating visual representations of the results in two and three dimensions.
Presenter: Tiffany Puff
Title: Application of Graph Theory to Cave Exploration
April 22, 2015 (WEDNESDAY)
Presenter: Dr. Jeffrey Weeks
Title: Visualizing Four Dimensions
Abstract: An introduction to a method for learning to visualize 4-dimensional space. Participants will work on some 4D visualization exercises in small groups, and present a few solutions using interactive 4D graphics software. The exercises range from elementary to advanced, so everyone from first-year undergraduates on up should find something they like.
April 6, 2015
Presenter: Eric Mann ('14), Android Developer- Marxent Labs LLC
Title: Mobile Application Development: A Team Effort
Abstract: Developing a mobile application for any platform for a company is a task for more than a single person. It takes a project manager to oversee everything is going correctly and to stay in contact with the customer. There are designers and UI/UX experts to create the interface for the application and make sure it stays usable and functions correctly. Developers then write the application to the standards of the customer, designers, and UI/UX experts. Everything must also be done in a specific timeline. The fun doesn't end there, however. Maintenance is always occurring to send out updates to keep the app functioning correctly and stay fresh where the entire process is repeated
February 23, 2015
Presenter: Steve Dennett ('07), Manager Crew Resource Planning - NetJets, Inc.
Title: From Algorithms to Aviation: Problem Solving in the Private Aviation Industry
Abstract: NetJets Inc., a Berkshire Hathaway company, is the worldwide leader in private aviation services. With more than 700 aircraft, 3,800 crewmembers, 325 thousand flights per year and constantly changing demands from our clients, complex business problems requiring creative solutions emerge on a daily basis. NetJets employs analysts throughout the business to tackle these problems, which often have mathematical, statistical and computer science based solutions. In this talk we will discuss two such problems, one using graph theory to optimize crew pairings and another employing statistics to identify aircraft with short term reliability issues
February 9, 2015
Presenter: Dr. Doug Andrews
Title: Error Bars: A Statistical Folk Remedy
Abstract: Error bars are visual representations of certain kinds of intervals. Use of such error bars is a relatively recent development that emerged outside the statistical mainstream. This talk will describe the different types of error bars in use, the tasks for which they’re used, why they don’t really mean what most users think they mean, and what stat tools work better for each of those tasks. The highlight of the talk, however, will be a joke by Dr. Ray Dudek (possibly in absentia).
January 26, 2015
Presenter: Dr. Bill Higgins
Title: The Mathematics of Fairness
Abstract: The settlement of an estate among heirs, division of property following a divorce, subdivision of land among competing claimants and dividing cake or candy among children are all problems of fair division. In this talk, we’ll discuss how to define fairness and present some “fair-division schemes” developed by Polish mathematician Hugo Steinhaus and others to tackle such problems.
December 8, 2014 - Student Senior Projects:
Presenter: Harley Shugart
Title: Intrusion Detection in Mobile Wireless Ad Hoc Networks
Abstract: We study the use of different movement patterns for intruder detection using sensors in a mobile wireless ad hoc network to address the shortcomings of a random movement pattern for intruder detection and interception. Previous research has shown that a random movement pattern has a high intruder detection rate, but the sensors are unable to work together to intercept an intruder because one sensor does not know the location of another. We propose that through the implementation of a synchronized pseudo random movement pattern a comparable detection rate to a random movement pattern can be achieved.
Presenter: Hieu Dang
Title: Application of the Implicit Function Theorem on Comparative Statics Analysis
Abstract: Comparative statics analysis is a widely used technique in economics to predict and test the outcome of an economic policy. Basically, the technique is concerned with the comparison of different equilibrium, before and after a change in some exogenous variables. In this presentation, I will briefly introduce the Implicit Function Theorem, which is the main theory behind the technique. In addition, I will also apply the theorem to carry out a comparative statics analysis of the Investment Saving – Liquidity Preference Money Supply (IS-LM) model.
Presenter: Emily Bast, Sarah Cummings, MaryAnn White (Noyce Interns at PNNL)
Title: Internsthips at the Pacific Northwest National Labratory
Abstract: Three Wittenberg Noyce Scholars will talk briefly about what the Noyce Scholarship, what their time at PNNL looked like, and individually give a brief overview of each of their projects.
November 24, 2014:
Presenter: Wendy Smiseck, Director of Career Services
Title: Networking and Job Seeking - Connecting Your Way
Abstract: There is some truth to the old phrase, “It’s not what you know, it’s who you know.” In today’s job market, while all jobs are posted there are pipelines to those jobs – contacts. Connecting with Wittenberg alumni as well as with others in your field is the key to finding meaningful employment (and internships) in a global market. Learn more about how to use LinkedIn and other forms of online networking to build your contacts and working relationships to better aid you in finding great opportunities.
November 10, 2014:
Presenter: Visiting Asst. Professor Alyssa Armstrong
Title: An Introduction to Lie ALgebra & Representation Theory
Abstract: Lie theory was developed in the 19th century to study the symmetries that arise in nature. It was found that a Lie algebra was an accessible tool for studying these symmetries, and mathematicians began classifying all finite-dimensional Lie algebras. The field of representation theory stemmed from studying the structure of a Lie algebra by representing their elements as matrices. I will give a brief introduction to Lie algebras and their representation theory through the examination of sl(2,C), the set of 2x2 traceless matrices. Exposure to matrices and vector spaces is the only recommended background to understand these concepts within Lie theory; however I will review some of the recommended theory during the talk.
October 31 – Nov 1, 2014 – Ohio Section Mathematical Assn of America Fall Conference
October 22 (Wednesday) 2014: Advising SMACCM (Pizza!!)
October 6, 2014:
Presenter: Visiting Asst. Professor Becca Winarski
Title: Braid Groups and Mapping Class Groups
Abstract: Braid groups and mapping class groups have been studied since the 1920s. Elements of braid groups can be visualized as strands of strings passing over each other like a braid in someone's hair. An element of the mapping class group is represented by a continuous map of a surface to itself. The descriptions of these groups may seem completely different, but there are some surprising parallels. In fact, it turns out that braid groups can be described as mapping class groups and vice versa.
September 22, 2014:
Presenter: Matthew Maloney - Case Western Reserve
Title: Operations Research and Supply Chain – How Quantitative Skills can better prepare you for your future career.
Abstract: Matthew Maloney is Director of Operations Research and Supply Chain Master’s Program at Case Western Reserve University. Matt works with students on professional and personal development and with corporate partners to help students find internships and practical experience, as well as permanent jobs. Matt will discuss the quantitative skills and experience that corporate America looks for in new college graduates.
September 8, 2014:
Presenter: Professor Brian Shelburne
Title: A Brief Introduction to Julia and Mandelbrot Sets
Abstract: One of the invited speakers for the MAA meeting to be held at Wittenberg later this fall is Robert Devaney of Boston University who is known for his work in chaotic dynamical system. One of his talks is titled ”The Fractal Geometry of the Mandelbrot Set”. It might be useful for learn a bit about the Mandelbrot before hearing Professor Devaney.