This photo was taken in Bandung on 5 December 2012. I was given a cake by the students of TI 3103 System Modeling course of which I lectured in the first semester of 2012/2013. Most of them were also my students in TI 3105 Operations Research II course. They knew that by the end of the week I would go to the Netherlands to pursue my doctoral education. Thanks students, a surprise was always a nice thing. Sorry I was still far from perfect of being a good lecturer, but I promise to achieve that. When I get my PhD you will probably have just started your career as industrial engineers. I hope you all good success always!