-
作者：Bramson, Maury; D'Auria, Bernardo; Walton, Neil
作者单位：University of Minnesota System; University of Minnesota Twin Cities; Universidad Carlos III de Madrid; University of Manchester
摘要：We consider a family of discrete time multihop switched queueing networks where each packet moves along a fixed route. In this setting, BackPressure is the canonical choice of scheduling policy; this policy has the virtues of possessing a maximal stability region and not requiring explicit knowledge of traffic arrival rates. BackPressure has certain structural weaknesses because implementation requires information about each route, and queueing delays can grow super-linearly with route length....
-
作者：Soh, Seung Bum; Gurvich, Itai
作者单位：Sejong University
摘要：Call centers attribute different values to different customer segments. These values are reflected in quality-of-service targets. The prevalent target service factor (TSF) formulation requires, for example, that 80% of VIP customers wait less than 20 seconds while setting the target to 30 seconds for non-VIP customers. The call center must determine the staffing level together with a prioritization rule that meets these targets at minimal cost. In practice, because of the underlying complexity...
-
作者：Cohen, Maxime C.; Leung, Ngai-Hang Zachary; Panchamgam, Kiran; Perakis, Georgia; Smith, Anthony
作者单位：New York University; City University of Hong Kong; Massachusetts Institute of Technology (MIT)
摘要：Sales promotions are important in the fast-moving consumer goods (FMCG) industry due to the significant spending on promotions and the fact that a large proportion of FMCG products are sold on promotion. This paper considers the problem of planning sales promotions for an FMCG product in a grocery retail setting. The category manager has to solve the promotion optimization problem (POP) for each product, i.e., how to select a posted price for each period in a finite horizon so as to maximize t...
-
作者：Dai, J. G.; Shi, Pengyi
作者单位：Cornell University; Purdue University System; Purdue University
摘要：We analyze a time-varying M-peri/Geo(2timeScale)/N queueing system. The arrival process is periodic Poisson. The service time of a customer has components in different time scales: length of stay (LOS) in days and departure time (h(dis)) in hours. This queueing system has been used to study patient flows from the emergency department (ED) to hospital inpatient wards. In that setting, the LOS of a patient is simply the number of days she spends in a ward, and her departure time h(dis) is the di...
