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作者：Argon, Nilay Tanik; Ziya, Serhan
作者单位：University of North Carolina; University of North Carolina Chapel Hill
摘要：In many service systems, customers are not served in the order they arrive, but according to a priority scheme that ranks them with respect to their relative importance. However, it may not be an easy task to determine the importance level of customers, especially when decisions need to be made under limited information. A typical example is from health care: When triage nurses classify patients into different priority groups, they must promptly determine each patient's criticality levels with...
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作者：Besbes, Omar; Savin, Sergei
作者单位：University of Pennsylvania; Columbia University
摘要：Managing shipping vessel profitability is a central problem in marine transportation. We consider two commonly used types of vessels-liners (ships whose routes are fixed in advance) and trampers (ships for which future route components are selected based on available shipping jobs)-and formulate a vessel profit maximization problem as a stochastic dynamic program. For liner vessels, the profit maximization reduces to the problem of minimizing refueling costs over a given route subject to rando...
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作者：Hsu, Vernon N.; Xu, Susan H.; Jukic, Boris
作者单位：Chinese University of Hong Kong; Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Clarkson University
摘要：This paper proposes a resource allocation and pricing mechanism for a service system that serves multiple classes of jobs within an organization. Each class of service request is subject to a class-dependent quality of service (QoS) guarantee on the expected delay bound, which may be imposed by business rules in an organization or other application-specific technical constraints. We develop an extension of a resource allocation and pricing mechanism for an M/M/1 system. In contrast to the syst...
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作者：Ibrahim, Rouba; Whitt, Ward
作者单位：Columbia University
摘要：Motivated by interest in making delay announcements to arriving customers who must wait in call centers and related service systems, we study the performance of alternative real-time delay estimators based on recent customer delay experience. The main estimators considered are: (i) the delay of the last customer to enter service (LES), (ii) the delay experienced so far by the customer at the head of the line (HOL), and (iii) the delay experienced by the customer to have arrived most recently a...
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作者：Siemsen, Enno; Roth, Aleda V.; Balasubramanian, Sridhar; Anand, Gopesh
作者单位：University of Minnesota System; University of Minnesota Twin Cities; Clemson University; University of North Carolina; University of North Carolina Chapel Hill; University of Illinois System; University of Illinois Urbana-Champaign
摘要：This research empirically examines the influence of psychological safety on knowledge sharing among coworkers in manufacturing and service operations contexts. Reconciling conflicting findings in the literature, we demonstrate that whereas psychological safety is an important antecedent of knowledge sharing, the relationship between psychological safety and knowledge sharing is moderated by the level of confidence that employees have in what they know. The greater this confidence, the lesser i...
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作者：Li, Cuihong; Debo, Laurens G.
作者单位：University of Connecticut; University of Chicago
摘要：We study the decision of a manufacturer ( the buyer), expecting new sourcing opportunities in the future, in selecting between sole- and second-sourcing strategies for a noncommodity component. In a sole- sourcing strategy, the buyer commits to sourcing from a single supplier ( the incumbent) over the entire horizon. In a second-sourcing strategy, the buyer keeps the option open to source from a new supplier ( the entrant) in the future. Supplier costs are private information, and the incumben...
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作者：Gopal, Anandasivam; Gao, Guodong (Gordon)
作者单位：University System of Maryland; University of Maryland College Park
摘要：Third-party process certification programs such as the ISO 9001 and capability maturity model (CMM) have been widely adopted in recent years. In this study we employ three competing theoretical frameworks signaling, efficiency gains, and institutional theory-to analyze the motivations for a firm to acquire quality certification and the performance implications thereafter. We test these hypotheses in the context of CMM certification based on data from the Indian offshore IT services industry be...
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作者：Hendricks, Kevin B.; Singhal, Vinod R.
作者单位：Wilfrid Laurier University; University System of Georgia; Georgia Institute of Technology
摘要：This paper documents that excess inventory announcements, an indication of demand-supply mismatch, are associated with an economically and statistically significant negative stock market reaction. The results are based on a sample of 276 excess inventory announcements made during 1990-2002. Over a two-day period (the day of the announcement and the day before the announcement) the mean ( median) stock market reaction ranges from -6.79% to -6.93% (-4.51% to -4.79%), depending on the benchmark u...
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作者：Dobson, Gregory; Pinker, Edieal; Van Horn, R. Lawrence
作者单位：University of Rochester; Vanderbilt University
摘要：This paper examines the staffing, division of labor, and resulting profitability of primary care physician practices. Division of labor is viewed as a mechanism to increase the efficiency of production processes through specialization. At the same time, division of labor also introduces coordination cost as handoffs and communication needs increase. We attempt to empirically assess the net effect in primary care physician offices. We collected data from a sample of these practices and tested t...
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作者：Li, Yanzhi; Lim, Andrew; Rodrigues, Brian
作者单位：City University of Hong Kong; Singapore Management University
摘要：In this note, we study the concurrent determination of pricing and inventory replenishment decisions for a perishable product in an infinite horizon. Demands in consecutive periods are independent and influenced by prices charged in each period. In particular, we treat price as a decision variable to maximize the total discounted profit. We analyze the optimal solution-structure of a two-period lifetime problem and from insights gained in numerical experiments, develop a base-stock/list-price ...
