I am Professor at the Department of Applied Mathematics and Statistics of the University of California Santa Cruz, where I have been part of the faculty since the Fall of 2001. I am currently the Head of the Statistics Group of AMS and Associate Chair. I was the Graduate Director of the program in Statistics and Stochastic Modeling until July 2007. I was a founding member of the Center for Statistics and Mathematical Software as well as of the Department of Scientific Computing and Statistics of Universidad Simón Bolívar, Caracas, Venezuela. I worked at USB from 1987 to 2002, reaching the level of Full Professor.
I am an Associate Editor for Bayesian Analysis, and Technometrics. I have ongoing collaborations with researchers from different institutions, including MIT, NCAR, Univ. of New Mexico, LANL, LLNL, Univ. Simón Bolívar, Univ. de Lisboa and Univ. of Rio de Janeiro. I have supervised the graduate work of nine students and I am currently supervising two more.