A pre-pack is a collection of items used in retail distribution. By grouping multiple units of one or more stock keeping units (SKU), distribution and handling costs can be reduced; however, ordering flexibility at the retail outlet is limited. This paper studies an inventory system at a retail...

Ticket queues are prevalent in service industries. They enhance customer satisfaction by eliminating physical lines, but may compromise efficiency (i.e., service completion probability). Existing studies offer mixed results on the cause and magnitude of such inefficiency. These results, however,...

We study an order promising problem in a multiclass, available-to-promise (ATP) assembly system in the presence of <i>pseudo orders</i>. A pseudo order refers to a tentative customer order whose attributes, such as the likelihood of an actual order, order quantity, and confirmation timing, can change...

Queueing systems managed by ticket technology are widely used in service industries as well as government offices. Upon arriving at a ticket queue, each customer is issued a numbered ticket. The number currently being served is displayed. An arriving customer balks if the difference between his...