Thomas W. La Point, Major Professor Barney J. Venables, Committee Member Kent D. Chapman, Committee Member Kenneth E. Banks, Committee Member Michael A. Lewis, Committee Member Samuel F. Atkinson, Chair of the Department of Biological Sciences Sandra L. Terrell, Dean of the Robert B. Toulouse School of Graduate Studies BIOACCUMULATION OF TRICLOCARBAN, TRICLOSAN, AND METHYL-TRICLOSAN IN A NORTH ...

In this section we introduce a framework to study optimal linear capital taxation. We first focus on a two-period model, define the concept of intertemporal wedge and derive optimal capital taxes using the Atkinson Stiglitz result. We then move to an infinite horizon model with aggregate uncertainty and derive optimal taxes. Finally, we study a model with capitalists and workers and show that o...

about the ability of salamanders to regenerate truncated limbs. This project has benefitted from reviews by Linda Atkinson, Robert Gibbs, Charles Hallahan, and Lorin Kusmin of ERS, and Paul Siegel of the Census Bureau. Mistakes and errors of judgment are the author’s alone. The views and opinions expressed in this paper do not necessarily reflect the views of the Economic Research Service or th...

Using bijections between pattern-avoiding permutations and certain full rook placements on Ferrers boards, we give short proofs of two enumerative results. The first is a simplified enumeration of the 3124, 1234avoiding permutations, obtained recently by Callan via a complicated decomposition. The second is a streamlined bijection between 1342-avoiding permutations and permutations which can be...

We introduce the notion of sink-stable sets of a digraph and prove a min-max formula for the maximum cardinality of the union of k sink-stable sets. The results imply a recent min-max theorem of Abeledo and Atkinson [1] on the Clar number of bipartite plane graphs and a sharpening of Minty’s coloring theorem [18]. We also exhibit a link to min-max results of Bessy and Thomassé [3] and of Sebő [...

This paper reports a simulation study comparing and evaluating the performance of different linguistic phylogeny reconstruction methods on model datasets for which the true trees are known. UPGMA performed least well, then (in ascending order) neighbor joining, the method of Gray & Atkinson and finally maximum parsimony. Weighting characters greatly improves the accuracy of maximum parsimony an...