-
作者：Mak, Vincent; Rapoport, Amnon; Gisches, Eyran J.; Han, Jiaojie
作者单位：University of Cambridge; University of California System; University of California Riverside; University of Arizona; Zhongnan University of Economics & Law
摘要：Whereas theoretical studies on dynamic pricing typically assume that consumers are either fully strategic or fully myopic, systematic empirical investigations into how consumers behave under dynamic pricing contexts are relatively rare. Focusing on scarce products, we constructed and experimentally tested a two-stage model in which a firm sells a seasonal good under exogenous inventory constraints to a market of strategic buyers. In our experiment, subjects assigned the role of buyers made pur...
-
作者：Wang, Wen-Ya; Gupta, Diwakar
作者单位：California State University System; San Jose State University; University of Minnesota System; University of Minnesota Twin Cities
摘要：Inpatient staffing costs are significantly affected by nurse absenteeism, which is typically high in U. S. hospitals. We use data from multiple inpatient units of two hospitals to study which factors, including unit culture, short-term workload, and shift type, explain nurse absenteeism. The analysis highlights the importance of paying attention to heterogeneous absentee rates among individual nurses. We then develop models to investigate the impact of demand and absentee rate variability on t...
-
作者：Li, Qing; Yu, Peiwen
作者单位：Hong Kong University of Science & Technology; Fudan University
摘要：We apply the concept of multimodularity in three stochastic dynamic inventory problems in which state and decision variables are economic substitutes. The first is clearance sales of perishable goods. The second is sourcing from multiple suppliers with different lead times. The third is transshipment under capacity constraints. In all three problems, we establish monotone optimal polices with bounded sensitivity. Multimodularity proves to be an effective tool for these problems because it impl...
-
作者：Kim, Song-Hee; Whitt, Ward
作者单位：Columbia University
摘要：Service systems such as call centers and hospitals typically have strongly time-varying arrivals. A natural model for such an arrival process is a nonhomogeneous Poisson process (NHPP), but that should be tested by applying appropriate statistical tests to arrival data. Assuming that the NHPP has a rate that can be regarded as approximately piecewise-constant, a Kolmogorov-Smirnov (KS) statistical test of a Poisson process (PP) can be applied to test for a NHPP by combining data from separate ...
-
作者：Erenay, Fatih Safa; Alagoz, Oguzhan; Said, Adnan
作者单位：University of Waterloo; University of Wisconsin System; University of Wisconsin Madison; University of Wisconsin System; University of Wisconsin Madison
摘要：Millions of Americans undergo colonoscopy screening for colorectal cancer (CRC) prevention and surveillance every year. The efficiency of colonoscopy operations depends on how often patients are screened, which is a complex and controversial decision, as reflected by the discrepancy between clinical practice and guidelines. We develop a partially observable Markov decision process to optimize colonoscopy screening policies for the objective of maximizing total quality-adjusted life years. Our ...
-
作者：Mumbower, Stacey; Garrow, Laurie A.
作者单位：University System of Georgia; Georgia Institute of Technology
摘要：In this paper we describe a database of online airline prices collected from a major online travel agent and a low-cost carrier. The database provides detailed pricing data for all nonstop flights offered in a market. Data are provided for 42 domestic U. S. markets across a 28-day booking horizon for 21 departure dates. Each of the 42 markets is served by one or more low-cost carriers. These data can be used to investigate the evolution of prices and price dispersion for monopoly, duopoly, and...
-
作者：Klosterhalfen, Steffen T.; Minner, Stefan; Willems, Sean P.
作者单位：BASF; Technical University of Munich; Boston University
摘要：Many real-world supply networks source required materials from multiple suppliers. Existing multiechelon inventory optimization approaches either restrict their scope to multiple supply sources in two-echelon systems or single suppliers in multiechelon systems. We develop an exact mathematical model for static dual supply in a general acyclic N-echelon network structure, which builds on the guaranteed-service framework for safety stock optimization. It is assumed that the suppliers are allocat...
-
作者：Zhan, Dongyuan; Ward, Amy R.
作者单位：University of Southern California
摘要：In a call center, agents may handle calls at different speeds, and also may be more or less successful at resolving customers' inquiries, even when only considering customers calling with similar requests. One common measure of successful call resolution is whether or not the call results in the customer calling back. This presents a natural trade-off between speed and quality, where speed is defined as the average time before an incoming call is answered (the average waiting time) and quality...
-
作者：Agrawal, Anupam; Van Wassenhove, Luk N.; De Meyer, Arnoud
作者单位：University of Illinois System; University of Illinois Urbana-Champaign; INSEAD Business School; Singapore Management University
摘要：In this paper, we explore how firms can better manage their sourcing by developing relationships not only with their suppliers but also with their suppliers' suppliers. We detail an empirical case study explaining how the firm developed relationships with its suppliers and raw material suppliers via a collaborative center, the sourcing hub. We then analytically model the scenarios encountered in our empirical work and examine two facets of upstream sourcing under uncertain demand scenarios: (a...
-
作者：Mak, Ho-Yin; Rong, Ying; Zhang, Jiawei
作者单位：Hong Kong University of Science & Technology; Shanghai Jiao Tong University; New York University
摘要：Managing appointments for service systems with random job durations is a challenging task. We consider a class of appointment planning problems that involve two sets of decisions: job sequencing, i.e., determining the order in which a list of jobs should be performed by the server, and appointment scheduling, i.e., planning the starting times for jobs. These decisions are interconnected because their joint goal is to minimize the expected server idle time and job late-start penalty costs incur...
