Marcílio Castro de Matos received a B.S. (1988) and an M.S. (1994) in electrical engineering from the Instituto Militar de Engenharia (IME) and a doctoral degree (2004) from the Pontificia Universidade Catolica do Rio de Janeiro. He served from 1989 to 1999 as a military engineer at the Brazilian Army Test Center and at IME as a signal-processing professor from 1999 to 2010. He was a visiting scholar at the University of Oklahoma from January 2008 to January 2010. He is currently co-principal investigator of the Attribute-Assisted Seismic Processing & Interpretation Research Consortium at the University of Oklahoma and is the principal of SISMO Signal Processing Research, Training & Consulting. His research interests include applied seismic analysis, digital signal processing, spectral decomposition, and seismic pattern recognition.