Assistant Professor of Archaeology and Archaeometry in Tabriz Islamic Art University.
Professor of history and Vice-president for Research, University of Erfurt, Germany.
Professor of computer engineering, University of California, Santa Cruz, USA.
Doctor of science, eesearcher in the Department of Ttheoretical astrophysics at the Ioffe Institute and Pulkovo Observatory, Russia.
Research Director, Instituto de Fisica Rosario (IFIR), CONICET-UNR, Argentina. Director of the Physical chemistry at interface and nanostructures laboratory.