Not to forget about my former and current employer Mercer Management Consulting who showed flexibility and provided resources which made this dissertation project much easier. Thanks to my advisor Wolfgang Krenz, my team leader Thomas Kautzsch, and my doctoral colleague Jan Burgard. Finally, and most importantly, my thanks go to my family. Without them, I wouldn’t be where I am; evidently, I wouldn’t be at all without my parents. For this reason, I guess it is suited to dedicate this work to Ute and Fredy Frankenberger. Not only for their constant sup- port during this dissertation, but for the.
