I am the chair of the membership committee the Association for Symbolic Logic (ASL).
To become a member go to the ASL website.
Please direct any questions on membership to me.
In earlier papers (1994-2003) I have investigated degree structures using model theoretic methods.
See Coding
Methods in Computability Theory and Complexity Theory for a summary.
In recent years (2002-2008) I have studied the interplay of computability and randomness.
Randomness and computability: Open questions. Version of June 30, 2007 with list of results obtained so far.
Published in Bull. Symb. Logic. 12 no 3 (2006) 390-410.
Joint with Joe Miller.
2) Algebra and automatic structures.
I apply logical methods especially to groups, and study structures that can be described
by automata, or via Borel relations.
See my survey papers: Describing Groups. Bull. Symb. Logic. 13 no 3 (2007), 305-339
Borel Structures: a brief survey   (with A. Montalban). To appear in EMU proceedings.