This dissertation consists of three papers which are aimed at extending consumer search theory by relaxing some of the informational assumptions and by inquiring into the incentives of firms to share information. The first paper analyses firm's incentives to share information in search markets....

Part I: Sources of uncertainty, risk, and imprecision -- Sources of Uncertainty in Location Analysis -- Risk, hazard and exposure time in Hazmat Location and Routing -- Customer related uncertainties in Facility Location Problems -- Part II: Models that protect against acts of nature, attackers,...