Federal Reserve Bank of Philadelphia

Professor of Telecommunications, University "Federico II" of Napoli

Professor in Electrical and Computer Engineering, Technical University of Crete, Greece

Chair Professor of Applied Mathematics, The Hong Kong Polytechnic University

Associate Professor of Computer Science, Pennsylvania State University

‎Professor, Liaoning Technical University

Professor@Tongji University

Gyeongsang National University

Professor, Dep. of Mathematics, Universidade Federal de Minas Gerais

Professor, Department of Mathematics, Graphic Era Hill University Dehradun