university of California,

The Ohio State University

Professor for Physiks, INPHYNI, University Côte d'Azur, Nice, France

Research Scientist, Institute of High Performance Computing, Singapore

Professor of Physics, Missouri University of Science and Technology

Professor, Department of Mechanical Engineering, University of Peloponnese, Greece

Full Professor, Politecnico di Torino

Louisiana State University

Professor of Geophysics, University of Bergen; UC Santa Cruz;Jilin University