Comet Calendar, The Official Event Calendar for UT Dallas en-us This week's events for Natural Sciences & Mathematics at UT Dallas Chemistry Seminar - Synthesis of Bioinspired Polymers and Their Application in Protein Drug Delivery Friday, Apr 18
(12 p.m. - 1 p.m.)

Spring 2014 Chemistry Seminar Series

Dr Heather Maynard from UCLA will be our speaker this Friday, Apr 18 2014

The title of her talk is "Synthesis of Bioinspired Polymers and Their Application in Protein Drug Delivery"

Statistics Colloquium by Peng Wei Friday, Apr 18
(2 p.m. - 3 p.m.)

Peng Wei

Assistant Professor, Division of Biostatistics, School of Public Health

University of Texas Health Science Center at Houston

Functional data analysis approach to detecting gene by longitudinal environmental exposure interaction

Most complex diseases are likely the consequence of the joint actions of genetic and environmental factors. Identification of gene-environment (GxE) interactions not only contributes to a better understanding of the disease mechanisms, but also improves disease risk prediction and targeted intervention. In contrast to the large number of genetic susceptibility loci discovered by genome-wide association studies, there have been very few successes in identifying GxE interactions which may be partly due to limited statistical power and inaccurately measured exposures.  While existing statistical methods only consider interactions between genes and static environmental exposures, many environmental factors, such as air pollution and diet, change over time, and cannot be accurately captured at one measurement time point. Here we propose a powerful functional logistic regression (FLR) approach to model the time-varying effect of longitudinal environmental exposure and its interaction with genetic factors on disease risk. Capitalizing on the powerful functional data analysis framework, our proposed FLR model is capable of accommodating longitudinal exposures measured at irregular time points and contaminated by measurement errors.  We use simulations to show that the proposed method can control the Type I error and is more powerful than alternative ad hoc methods. We demonstrate the utility of this new method using data from a case-control study of pancreatic cancer to identify the windows of vulnerability of lifetime body mass index (BMI) on the risk of pancreatic cancer as well as genes which may modify this association.


Sponsored by the Department of Mathematical Sciences


Geosciences Seminar Friday, Apr 18
(3:30 p.m. - 4:30 p.m.)

The Department of Geosciences is pleased to announce the upcoming seminar and invite you to join us on Friday, April 18 2014 at 3:30 p.m. in ROC 2.103.  Our distinguished guest speaker will be Dr. Mousumi Roy from University of New Mexico.  The title of his presentation will be: "How Cenozoic Magmatic Patterns in the Western US and their Relation to Evolution of the Colorado Plateau".

Admission is free and refreshments will be served after the seminar in ROC 2.301, the Geosciences Office.  We hope you will plan to attend.

Experiments with spin-orbit coupled Bose-Einstein condensates:Simulating condensed matter Hamiltonians with ultracold atoms Wednesday, Apr 23
(4 p.m. - 5:15 p.m.)

Prof. Peter Engels,

Washington State University

The simulation of condensed matter Hamiltonians using ultracold quantum gases has emerged as a highly active field of research. In this context the generation of artificial gauge fields is a powerful tool allowing the study of charged particle physics with neutral atoms. In our lab at WSU we have implemented a Raman dressing scheme realizing an artificial gauge potential and spin-orbit coupling for a BEC. Spin-orbit coupled BECs display intriguingly rich physics. Examples of these include parallels to the Zitterbewegung of free electrons predicted by the Dirac equation, the presence of a Dicke-type phase transition, and, when combined with an optical lattice, interesting bandstructures that we have probed in our experiments. In this talk I will highlight the underlying ideas of spin-orbit coupled BECs as well as recent results of our ongoing investigations.