I am Mohammed Zedan Salem (an associate professor in marketing) at the University College of Applied Sciences-UCAS, Gaza, Palestine. I will give lectures in the field of demarketing, solid waste management, packaging, SMS advertising, and the role of efficiency and effectiveness in decision making. In addition to that, I will progress the joint research projects with my colleagues Prof. Dr. Ralf Wagner and Katharina Raab (two of our joint researches are currently under review at the international journals indexed in Thomson Reuters with high impact factors, and the third paper will send it to a journal as soon as possible). I would like to exploit the chance to thank the University of Kassel for giving me the chance to come here. Maybe the words will not help me in expressing my feelings and my admiration to thank you.