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Tue Sep 24, 2019

ACMS Statistics Seminar: Chunfeng Huang

3:30 PM - 4:30 PM
154 Hurley

Chunfeng Huang
Indiana Univ.- Bloomington

3:30 PM
154 Hurley Hall

Intrinsic Random Functions on the Sphere

Global-scale phenomena, of which there are a multitude of important applications ranging from climate science to epidemiology, can be viewed as random processes on the sphere. Many popular methods are based on the assumption that the underlying process is stationary, requiring rotation invariance. This assumption is often deemed unrealistic in practice. In this talk, I introduce a class of non-stationary processes, the intrinsic random functions (IRFs) on the sphere. We show that low frequency truncation plays an essential role. Based on this, we develop methods to estimate the degree of non-stationarity for processes on the sphere, which are demonstrated through simulation studies. In addition, IRF based kriging is constructed and shown to be equivalent to the spline smoothing formula in the corresponding reproducing kernel Hilbert space.

Posted In: Statistics Seminar

Thu Sep 26, 2019

ACMS Applied Math Seminar: Hye-Won Kang

3:30 PM - 4:30 PM
108 Crowley Hall

Hye-Won Kang
University of Maryland, Baltimore County
 

3:30 PM
108 Crowley Hall

"Stochastic Modeling of Multiscale Biochemical Networks"

Stochastic effects may play an important role in mathematical modeling of biological and chemical processes in case the copy number of some component involved in the system is small. This talk will present the recent work on stochastic modeling of biochemical networks. First, I will introduce a continuous-time Markov chain model for chemical reaction networks when the systems are well stirred. The relationship between the stochastic and deterministic models will be considered. This model is extended to describe reaction and diffusion in the spatially distributed systems. Next, multiscale algorithms for stochastic simulation of reaction-diffusion processes will be introduced, that couple different modeling schemes for better efficiency of the simulation. The algorithms apply to the systems including the region with a few molecules where a continuous-time Markov chain model is used and the region with a large number of molecules where stochastic partial differential equations(SPDEs) are applied.

Posted In: Applied Math Seminar

Fri Sep 27, 2019

ACMS Colloquia: Alberto Cairo, School of Communication, University of Miami

2:30 PM - 4:00 PM
Hesburgh - 107 Carey Auditorium

Alberto Cairo

Alberto Cairo, School of Communication, University of Miami, will give a colloquium titled, "How Visualization Can Mislead Us - And What We Can Do About It " at 2:30 PM in 107 Carey Auditorium.

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Posted In: ACMS Colloquia

Mon Sep 30, 2019

ACMS Colloquia: Jonathan Rubin, Department of Mathematics, University of Pittsburgh

4:30 PM - 5:30 PM
127 Hayes-Healy Center

Jonathan Rubin

Jonathan Rubin, Department of Mathematics, University of Pittsburgh, will give a colloquium titled, “Think fast: transient dynamics in neuroscience, and mathematical methods for identifying and analyzing transients" at 4:30 PM in 127 Hayes-Healy Center.

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Posted In: ACMS Colloquia

Tue Oct 8, 2019

ACMS Informational Session

5:00 PM - 6:00 PM
Hurley Hall Globe Area

Are you interested in learning more about the Applied and Computational Mathematics and Statistics (ACMS) or Statistics major? Would you like to meet our faculty and discuss the many opportunities for students with the ACMS/STAT major? Then join us at the ACMS Informational Session!

 

Pizza and Sub sandwiches will be served!…

Posted In: Student Events

Wed Oct 16, 2019

ACMS Colloquia: Joachim Rosenthal, Institute of Mathematics, University of Zurich

4:30 PM - 5:30 PM
127 Hayes-Healy Center

Joachimrosenthal


Joachim Rosenthal, Institute of Mathematics, University of Zurich, will give a colloquium titled, “Overview of Post-Quantum Cryptography with an Emphasis on Code based Systems" at 4:30 PM in 127 Hayes-Healy Center.

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Posted In: ACMS Colloquia

Mon Mar 30, 2020

ACMS Colloquia: Mikyoung Jun, Department of Statistics, Texas A & M University

4:30 PM - 5:30 PM
127 Hayes - Healy Center

No Image Available Monogram

Mikyoung Jun, Department of Statistics, Texas A & M University, will give a colloquium titled, "TBA " at 4:30 PM in 127 Hayes - Healy Center.

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Posted In: ACMS Colloquia

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