shadow_tr

Research Seminars: Probability and Statistics


Old web pages: Spring 2017

Fall  2017

Time & Location: All talks are on Wednesdays in Gibson Hall 414 at 3:00 PM unless otherwise noted.
Organizer: Gustavo Didier

 

September 13

Topic: A hop, skip, and jump-diffusion through some models of intracellular transport

Chris MilesUniversity of Utah, Mathematics Department (Host: Scott McKinley)

Abstract: The movement of cargo within cells by small teams of molecular motors is a critical ingredient of many cellular functions. Both at the individual motor and ensemble levels, stochasticity is fundamentally unavoidable and diverse in its manifestation. Thus, fully elucidating the behavior of these systems requires disentangling a variety of noises at different temporal and spatial scales, providing a rich platform for not only biological intrigue, but also mathematical. In this talk, I'll briefly discuss some of my work modeling motor systems. The first project, inspired by motor stepping dynamics, provides some mathematical results on statistics of general jump-diffusion processes with state dependent jump rates. The second, a collaboration with experimentalists, attempts to unravel underlying sources of diffusive noise in observed transport data. Lastly, I'll mention how these projects relate to on-going work modeling transport by a curious type of motor incapable of taking many steps.


September 20

Long-term dynamics of particles undergoing active transport

Veronica CiocanelMathematical Biosciences Institute (Host: Scott Mckinley)

Abstract:

In many developing organisms, such as frog oocytes, mRNAs and other proteins get transported to specific cell locations to ensure that healthy asymmetric cell division can occur. The dynamics often include diffusion, bidirectional transport, and stationary states, and may be influenced by the spatial distribution of filaments inside the cell. To determine the long-term displacement of the particles, we derive their effective velocity and diffusion using dynamical systems techniques for certain PDE systems. We also outline an alternative (and potentially equivalent) stochastic approach for deriving these large-time transport quantities using renewal reward theory.


September 27

Topic

Speakerinstitution

Abstract: TBA


October 4

Topic

Speakerinstitution

Abstract: TBA


October 11

Topic

Speakerinstitution

Abstract: TBA


October 18

Topic

Speakerinstitution

Abstract: TBA


October 25

Topic

Speakerinstitution

Abstract: TBA


November 1

Topic

Speakerinstitution

Abstract: TBA


November 8

Topic

Speakerinstitution

Abstract: TBA


November 15

Topic

Speakerinstitution

Abstract: TBA


November 22

Topic

Speakerinstitution

Abstract: TBA


November 29

Topic

Speakerinstitution

Abstract: TBA


December 6

Topic

Speakerinstitution

Abstract: TBA


December 13

Topic

Speakerinstitution

Abstract: TBA


Mathematics Department, 424 Gibson Hall, New Orleans, LA 70118 504-865-5727 math@math.tulane.edu