1997
1997 Texas Partial Differential Equations Seminar
University of North Texas, Denton

Saturday April 19, 1997. (In order of presentation)
 Alfonso Castro: Univ. of North Texas; Nonradial signchanging solutions to a dirichlet problem in thin annuli.
 John M. Neuberger: Mississippi State Univ.; A signchanging solution of a semilinear elliptic boundary value problem beyond the first eigenvalue.
 Dana M. Bedivan: Univ. of Texas at Arlington; Least squares methods for optimal shape problems.
 Goong Chen: Texas A&M Univ.; Chaotic vibrations of the wave equation due to the interaction of energy pumping and Van Der PoL boundary conditions.
 Jianxin Zhou: Texas A&M Univ.; Some new regularity results on the Stokes' equation.
 Ratnasingham Shivaji: Mississippi State Univ.; A multiplicity result for a class of superlinear semipositone problems.
 John Mooney: Glasgow Caledonian Univ. An implicit Douglas algorithm for a nonlinear singular parabolic quenching problem.
 Thomas Hagen: Virginia Polytechnic Institute; On the wellposedness of an initialboundary value problem for a class of semilinear parabolic differential equations.
 Paul Uhlig: Rice Univ. Where best to hold a drum fast.
 Panayotis Panayotaros: Univ. of Texas at Austin; Numerical simulation of water waves on the sphere.

Sunday April 20, 1997. (In order of presentation)
 John Albert: Univ. of Oklahoma; Concentration compactness and stability of solitary waves.
 Maeve McCarthy: Rice Univ.; The shape of the tallest column.
 Andras Balogh: Texas Tech Univ.; Local feedback regularization of the threedimensional NavierStokes equation on bounded domains.
 Malgorzata Peszynska: Univ. of Texas at Austin; A transport model with adsorption hysteresis.
 Sudhasree Gadam: Univ. of North Texas; Nonexistence of positive solutions for a Neumann problem.
 Ruediger Landes: Univ. of Oklahoma; Test functions for elliptic systems and maximum principles.
 Marianna Shubov: Texas Tech Univ. Spectral properties of the threedimensional spherically symmetric damped wave equation and applications to control theory.
 Victor I. Shubov: Texas Tech Univ.; Dynamics of boundary controlled convectionreactiondiffusion equations.
 Joseph Iaia: Univ. of North Texas; Positive solution curves in semipositone problems with concaveconvex type nonlinearities.