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作者：Chan, Carri W.; Dong, Jing; Green, Linda V.
作者单位：Columbia University; Northwestern University
摘要：In order for a patient to be discharged from a hospital unit, a physician must first perform a physical examination and review the pertinent medical information to determine that the patient is stable enough to be transferred to a lower level of care or be discharged home. Requiring an inspection of a patient's readiness for discharge introduces an interesting dynamic where patients may occupy a bed longer than medically necessary. Motivated by this phenomenon, we introduce a queueing system w...
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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....
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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...
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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...
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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...
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作者：Mookerjee, Radha; Kumar, Subodha; Mookerjee, Vijay S.
作者单位：University of Texas System; University of Texas Dallas; Texas A&M University System; Texas A&M University College Station; Mays Business School
摘要：This study provides an approach to manage an ongoing Internet ad campaign that substantially improves the number of clicks and the revenue earned from clicks. The problem we study is faced by an Internet advertising firm (Chitika) that operates in the Boston area. Chitika contracts with publishers to place relevant advertisements (ads) over a specified period on publisher websites. Ad revenue accrues to the firm and the publisher only if a visitor clicks on an ad (i.e., we are considering the ...
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作者：Correa, Jose; Harks, Tobias; Kreuzen, Vincent J. C.; Matuschke, Jannik
作者单位：Universidad de Chile; University of Augsburg; Maastricht University; Technical University of Munich
摘要：Public transit systems in major urban areas usually operate under deficits and therefore require significant subsidies. An important cause of this deficit, particularly in the developing world, is the high fare evasion rate mainly due to an ineffective control policy or the lack of it. In this paper we study new models for optimizing fare inspection strategies in transit networks based on bilevel programming. In the first level, the leader (the network operator) determines probabilities for in...
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作者：Ruddell, K.; Philpott, A. B.; Downward, A.
作者单位：University of Auckland
摘要：Supply function equilibrium models are used to study electricity market auctions with uncertain demand. We study the effects on the supply function equilibrium of a tax, levied by the system operator, on the observed surplus of producers. Such a tax provides an incentive for producers to alter their offers to avoid the tax. We consider these incentives under both strategic and price-taking assumptions. The model is extended to a setting in which producers are taxed on the benefits accruing to ...
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作者：Bertsimas, Dimitris; Misic, Velibor V.
作者单位：Massachusetts Institute of Technology (MIT); Massachusetts Institute of Technology (MIT); University of California System; University of California Los Angeles
摘要：The majority of approaches to product line design that have been proposed by marketing scientists assume that the underlying choice model that describes how the customer population will respond to a new product line is known precisely. In reality, however, marketers do not precisely know how the customer population will respond and can only obtain an estimate of the choice model from limited conjoint data. In this paper, we propose a new type of optimization approach for product line design un...
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作者：Ali, Ozden Gur; Akcay, Yalcin; Sayman, Serdar; Yilmaz, Emrah; Ozcelik, M. Hamdi
作者单位：Koc University; Koc University; Koc University; Koc University; Yapi Kredi Bank
摘要：We propose a novel approach to cross-selling investment products that considers both the customers' and the bank's interests. Our goal is to improve the risk-return profile of the customer's portfolio and the bank's profitability concurrently, essentially creating a win-win situation, while deepening the relationship with an acceptable product. Our cross-selling approach takes the customer's status quo bias into account by starting from the existing customer portfolio, rather than forming an e...
