Responding to true emergencies in the shortest possible time saves lives, prevents permanent injuries and reduces suffering. Most covering models consider an emergency cover if an ambulance is available within a given time or distance threshold. From a modeling perspective, shorter or longer...

Small and medium-sized enterprises (SMEs) face more serious challenges to their survival than do larger firms. To succeed, SMEs must establish and maintain credibility in the marketplace to attract the resources required for survival. Most co-opt legitimacy by mimicking the cues that signal...