Andreas Dressel

The provided articles do not mention Andreas Dressel. Therefore, it's impossible to provide a summary about him based on the given information. The articles discuss the opening of new university buildings in Hamburg, the implementation of tariff loyalty in Hamburg's contract awarding processes, and the potential for Hamburg to bid for the Olympics. Without further context or articles mentioning Andreas Dressel, his role or relevance to these topics cannot be determined. More information is needed to understand who Andreas Dressel is and why he might be newsworthy.