We revisit a service provider's problem to match supply and demand via an online appointment system such as a doctor in the health care sector. We identify in a survey that an extensive set of available appointments leads to significantly less demand because customers infer a lower quality of...

Planning stability or its counterpart, planning nervousness, is a challenging issue for many companies as well as for scientists who try to analyze and explain this phenomenon. Research in this area mainly concentrates on the field of production and materials planning where current replanning...