Title:  Universal wave patterns

Abstract:  A feature of solutions of a (generally nonlinear) field

theory can be called "universal" if it is independent of side conditions like initial data. I will explain this phenomenon in some detail and then illustrate it in the context of the sine-Gordon equation, a fundamental relativistic nonlinear wave equation. In particular I will describe some recent results (joint work with R. Buckingham) concerning a universal wave pattern that appears for all initial data that crosses the separatrix in the phase portrait of the simple pendulum.  The pattern is fantastically complex and beautiful to look at but not hard to describe in terms of elementary solutions of the sine-Gordon equation and the collection of rational solutions of the famous inhomogeneous Painlev\'e-II equation.

Title:  Automating and Stabilizing the Discrete Empirical Interpolation Method for Nonlinear Model Reduction

Abstract:  The Discrete Empirical Interpolation Method (DEIM) is a technique for model reduction of nonlinear dynamical systems.  It is based upon a modification to proper orthogonal decomposition which is designed to reduce the computational complexity for evaluating reduced order nonlinear terms.  The DEIM approach is based upon an interpolatory projection and only requires evaluation of a few selected components of the original nonlinear term.  Thus, implementation of the reduced order nonlinear term requires a new code to be derived from the original code for evaluating the nonlinearity.  I will describe a methodology for automatically deriving a code for the reduced order nonlinearity directly from the original nonlinear code.  Although DEIM has been effective on some very difficult problems, it can under certain conditions introduce instabilities in the reduced model.  I will present a problem that has proved helpful in developing a method for stabilizing DEIM reduced models.

Film viewing of The Murder of Emmett Till followed by a panel discussion. 

Emancipation, New Sensibility, and the Challenge of a New Era: Theory, Practice, and Pedagogy. 

Sessions all day Thursday, Friday & Saturday in the UK Student Center with scholars and students from around the world.

TITLE: Square roots of divergence form operators on L^p spaces

ABSTRACT: An abstract is available online at

http://www.ms.uky.edu/~kott/PDEseminarf13/Haller-Dintelmann.pdf

"Davis Bottom: Rare History, Valuable Lives" reveals the fascinating history of a working-class neighborhood established in Lexington after the Civil War. Davis Bottom is one of about a dozen ethnic enclaves settled primarily by African-American families who migrated to Lexington from the 1860s to the 1890s in search of jobs, security and opportunity. 

The documentary is part of the Kentucky Archaeology and Heritage Series, produced by Voyageur Media Group, Inc. for the Kentucky Archaeological Survey and the Kentucky Heritage Council. The series is distributed by Kentucky Educational Television (KET) to viewers, teachers and students throughout the state. Wednesday's advance screening, part of the first-ever Kentucky Archaeology Month activities, is free and open to the public.

The UK Appalachian Center, Appalachian Studies, and the Graduate Appalachian Research Community (GARC) seek to promote interdisciplinary dialogue on issues in Appalachia. We are proud to follow up our first four successful symposia with the 2014 UK Appalachian Research Symposium and Arts Showcase.

Invisible War (2011), an Academy Award-nominated documentary, will be shown for free this Saturday morning, April 20, 2013,  at 10 AM at the Kentucky Theater.  This film documents the lives of women and men who have been sexually assaulted while serving in the U.S. military.  Several of the survivors have roots in Kentucky, and some of them will be at the screening to answer questions.  Come out, see the film, hear their stories.

Sponsored by UK Arts and Sciences, Anthropology, English, History, WRD (Writing, Rhetoric, and Digital Media), American Studies and the Center for research on Violence Against Women (CRVAW)

A celebration of Kate Black's contributions as an Appalachian Studies Archivist and Scholar