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Department of Mathematics

Applied Mathematics and Computation Seminars

Methane bubbles frozen in the ice of Lake Baikal

The AMC seminar is devoted to general topics in applied mathematics and computation. We welcome an interdisciplinary audience and speakers: faculty, researchers, and graduate students from mathematics, geosciences, computer science, engineering, atmospheric sciences, and other disciplines, to attend and present research talks in their fields as well as reaching across multiple fields. Both technical, tutorial, and expository presentations are welcome.

Attendees are encouraged to join the mailing list by sending an email to the organizer (M. Peszynska).

Students attending regularly are encouraged to sign up for (an appropriate section of) seminar credit under MTH 607. Non-OSU participants from outside academe are also encouraged to write an email to the organizers and provide their names and affiliation.

See below for upcoming seminars or access the seminar archive.

Organizers

Malgorzata Peszynska and Ralph E. Showalter.

Timing

Meetings are Fridays at noon.

NO seminar today: attend CASCADE RAIN on April 27 instead

N/A

Speaker: N/A

All are invited to attend CASCADE RAIN meeting hosted on April 27 by Portland State University. Information and (free) registration link are at https://sites.google.com/pdx.edu/rain2024OSU SIAM student chapter is organizing carpool: please contact the president Tyler Fara if interested. Read more.

Fast-spreading pathogens affecting small populations: Why does FMDV persist in African Buffalo populations?

STAG 112

Speaker: Ricardo Reyes Grimaldo

ABSTRACT: The rise of interactions between wildlife and humans increases the need to understand the relationship between different ecological and epidemiological processes within and among different interacting populations. Foot-and-mouth disease viruses (FMDV) are among the most infectious pathogens known to man, and Wild buffalo (Syncerus caffer) act as a reservoir host for FMDV in the sub-Saharan region of the African continent. Because of the impact on international livestock trade that Foot-and-mouth disease can cause, and its ubiquitous characteristic of persisting in wild populations of African buffalo while remaining highly contagious, raises the question of how this pathogen persists in the wild. In this talk, we will discuss current modeling work concerning the propagation of FMDVs in their reservoir host, through a modified McKendrick–von Foerster equation solved through the Crank-Nicolson method. We consider the dynamics for the loss of acquired immunity, its role in the… Read more.

TBA

STAG 112

Speaker: Mark Raleigh

Read more.

Digital Twins for Time Dependent Problems

STAG 112

Speaker: Juan Restrepo

ABSTRACT: A digital twin is a set of algorithms that connect the virtual world to the physical worl in a fully bi-directional way: for example, a predictive digital twin will use physics models, machine learned models, constraints as well as observations to make forecasts. A digital twin used as a controller would yield a virtual prescription, taking into account observations, that prescribes changes in the real world aimed at obtaining a certain desired real world outcome. I will describe ongoing work on developing a digital twin that will become central to an artificial intelligence framework for large scale electric grid resilience via adaptation. BIO: Juan M. Restrepo is a Distinguished Member of the R&D staff and the section head of the mathematics in computation section at Oak Ridge National Laboratory. His research concerns foundational aspects of machine learning and the development of new artificial intelligence algorithms for science. He is a Fellow of the Society of… Read more.

TBA

STAG 112

Speaker: Solomon Yim

Read more.

TBA

STAG 112

Speaker: Eleanor Jenkins

Read more.