1. Department of Business Administration, Faculty of Management, Kharazmi University, Tehran, Iran
2. Department of Tourism, College of Arts and Social Science, Sultan Qaboos University, Muscat, Oman
3. Department of Management, Marketing and Tourism, University of Canterbury, Christchurch, New Zealand
4. Visiting Professor & Docent, Geography, University of Oulu, Oulu, Finland
5. Guest Professor, Department of Service Management and Service Studies, Lund University, Helsingborg, Sweden
6. Visiting Professor, Department of Organization and Entrepreneurship, School of Business and Economics, Linnaeus University, Kalmar, Sweden
7. Visiting Professor, Centre for Research and Innovation in Tourism, Taylor's University, Subang Jaya, Malaysia