Student Colloquium talk by Professor Michael A. Robert, University of the Sciences

**Title: **Mathematics of Outbreaks: Exploring Infectious Disease Transmission and Control with Mathematical Models

**Abstract: **Mathematical models have long been used to study the spread of infectious diseases. From smallpox to influenza to Zika virus, mathematical models help us understand how infectious diseases spread and how we can potentially control their spread. Models are also powerful tools for making predictions about how infectious diseases may emerge and spread in the future. In this talk, I will introduce mathematical models developed to study infectious diseases, and I will discuss my recent work in using mathematical models to study the spread and control of dengue fever and Zika virus, two diseases transmitted by mosquitoes. Dengue fever is found throughout tropical regions of the world and impacts millions of people each year. In recent years, dengue has begun to spread into more temperate areas of the world. Zika virus first emerged in 2015 and spread rapidly throughout the world, infecting millions of people. The recent rapid spread of both viruses is the result of a number of factors including an increasingly connected world and a rise in global surface temperatures caused by climate change. I will discuss how I utilize mathematical models to understand how these two factors play a role in transmission of dengue and Zika. I will specifically discuss how human movement and temperature variation impact the potential for the spread of dengue and Zika in certain U.S. cities and how the potential for emergence of the viruses may change if global surface temperatures continue to rise. I will also briefly discuss how models are being used to plan control strategies for infectious diseases, including strategies involving the release of genetically modified mosquitoes to help control mosquito-borne diseases.

Best of luck to all participants!

John Steiner Gold Exam Announcement

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Student Colloquium talk by Professor Matthew Mizuhara ’12 of The College of New Jersey

**Title: **An Orchestra without a Conductor: The Mathematics of Synchronizing Fireflies

**Abstract: **In Amphawa, Thailand trees are lined with thousands of fireflies spontaneously flashing in near perfect unison. However, there is no “leader” driving this coordination. The Kuramoto model, a non-linear system of differential equations, describes the firefly flashes. Using numerical simulations, we can capture this spontaneous emergence of synchronization and explore other, new patterns which can arise. No background in differential equations is required to enjoy this talk!

Students take a cultural journey to China as they flow through the exquisite movements of traditional watersleeve dance.

Posted by BucknellU on Friday, February 8, 2019

Yili Wang ’21, who is majoring in Applied Mathematical Sciences, is featured in this video about the “Cool Class” DANC 200: Art of Chinese Watersleeve.

]]>Student Colloquium talk by Professor Lucas Waddell of Bucknell University

**Title: **Using Genetic Algorithms for U.S. Army Robot Design

**Abstract: **In recent years, Operations Research practitioners have increasingly utilized nature-inspired algorithms (NIAs) to solve real-world, large-scale optimization problems. One of the most popular NIAs is the Genetic Algorithm (GA), which is based on ideas from Darwin’s theory of evolution. This talk will provide an introduction to GAs through the lens of a project that Lucas worked on for the U.S. Army during his time as an Operations Research Analyst at Sandia National Laboratories.

As part of Professor Flynt’s Foundation Seminar titled **Sports, Statistics and Society**, groups of first-year students acted as consultants, performing sports analytics for different Bucknell athletic teams. Students worked with Baseball, Field Hockey, Men’s and Women’s Basketball, and Football. Each coach developed a set of questions that they were interested in having the students analyze and gave students full access to their team data. The group of students working with the football team worked very closely with Offensive Coordinator, Coach Bobby Acosta, spending time in the football coaching suite, looking at game video, and taking stats for the team up in the box at several practices. Their analysis of practice data helped inform play calling for the offense in the last couple games of the season. The project was featured in this segment during the TV broadcast of the final game versus Fordham on November 17th.

**Moderator: **Nate Mattis ’19

**Presenters:**

- Hannah Bokma ’20, Teaching Experience for Undergraduates, Brown University
- Nate Lesnevich ’19, Undergraduate Research (Pure Mathematics), Bucknell University
- Christina Sweeney ’19, Data Analytics, Slalom Consulting
- Xeniya Tsoktoyeva ’19, Finance, PNC Bank
- Yili Wang ’21, Undergraduate Research (Applied Mathematics), Bucknell University

**Abstract: **There are many exciting summer opportunities for students in the mathematical sciences! These range from internships with financial companies to research experiences at other universities to leadership development programs. In this week’s colloquium, a panel of your peers will tell you their experiences. What did they enjoy about their experiences? When did they apply? There will also be ample time for questions and answers. These varied opportunities, as well as being terrific fun, are also immensely valuable as you begin to think about your careers after Bucknell.

Student Colloquium talk by Professor Dick Forrester of Dickinson College

**Title: **Assigning Students to Schools to Minimize Socioeconomic Variation between Schools: An Introduction to Optimization Modeling

**Abstract: **Numerous studies have found that a student’s academic achievement is as much determined by the socioeconomic composition of their school as their own socioeconomic status. In this talk we provide a methodology for assigning students to schools so as to balance the socioeconomic compositions of the schools while taking into consideration the total travel distance. Our technique utilizes a bi-objective general 0-1 fractional program that is linearized into a mixed 0-1 linear program which can be submitted directly to a standard optimization package. If you didn’t understand that last sentence, don’t worry, the purpose of this talk is to introduce you to optimization modeling. As a test case for our approach we analyze data from the Greenville County School District in Greenville, South Carolina.

Student Colloquium talk by Professor Liz Stanhope of Lewis and Clark College (Visiting Professor at Bucknell University)

**Title: **Listening to Orbifolds and Orbigraphs

**Abstract: **Spectral geometry is a lively area of mathematical research motivated by the question `Can you hear the shape of a drum?’ My work in spectral geometry has been to study the spectral properties of objects called *orbifolds*. Questions in spectral geometry have useful analogs in graph theory. Because of this we’ll discuss how to make sense of the concept of orbifold in the setting of spectral graph theory.

Student Colloquium talk by Professor Ken Field of Bucknell University

**Title: **Bioinformatics and the Challenges of Visualizing Big Data

**Abstract: **Bioinformatics and next generation sequencing have revolutionized biology and medicine. The increasing affordability of next generation sequencing has made it possible to use whole-genome and whole-transcriptome approaches to answer questions in the lab, the field, and the clinic. However, working with these large datasets presents several computational and statistical challenges. As an example, we will discuss the importance of data exploration and multiple testing corrections. In addition, visualizing complex multi-dimensional data is also difficult and we will discuss approaches using interactive data displays and virtual reality.