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作者：Lulli, G; Sen, S
作者单位：University of Arizona
摘要：In this paper, we present. a branch-and-price method to solve special structured multistage stochastic integer programming problems: We validate our method on two different versions of a multistage stochastic batchsizing problem (SBSP). One version adopts a recourse formulation, and the other is based on probabilistic constraints. Our algorithmic approach is applicable to both formulations. Our computational results suggest that both classes of problems can be solved using relatively few nodes...
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作者：Souza, GC; Bayus, BL; Wagner, HM
作者单位：University System of Maryland; University of Maryland College Park; University of North Carolina; University of North Carolina Chapel Hill
摘要：We study how industry clockspeed, internal firm factors, such as product development, production, and inventory costs, and competitive factors determine a firm's optimal new-product introduction timing and product-quality decisions. We explicitly model market demand uncertainty, a firm's internal cost structure, and competition, using an infinite-horizon Markov decision process. Based on a large-scale numerical analysis, we find that more frequent new-product introductions are optimal under fa...
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作者：Liu, LM; Liu, XM; Yao, DD
作者单位：Hong Kong University of Science & Technology; University of Macau; Columbia University
摘要：An important issue in the management of supply chains and manufacturing systems is to control inventory costs at different locations throughout the system while satisfying an end-customer service-level requirement. The challenge involved is to solve a nonlinear constrained optimization problem that captures the key dynamics of a complex production-inventory system. In this paper, we first develop a multistage inventory-queue model and a job-queue decomposition approach that evaluates the perfo...
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作者：Hopp, WJ; Tekin, E; Van Oyen, MP
作者单位：Northwestern University; University of North Carolina; University of North Carolina Chapel Hill; Loyola University Chicago
摘要：To gain insight into the potential logistical benefits of worker Cross-training and agile workforce policies, we study simple models of serial production systems with flexible servers operating under a constant work-in-process (CONWIP) release policy. Two important and interrelated issues are: (a) how to decide which skill(s) are strategically most desirable for workers to gain, and (b) how to coordinate these workers to respond dynamically to congestion. We address these by considering two cr...
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作者：Haunschild, PR; Rhee, M
作者单位：University of Texas System; University of Texas Austin; University of Hawaii System
摘要：What is the role of volition in organizational learning? Do firms learn better in response to internal procedures or external mandates? Existing literature provides conflicting answers to this question, with some theories suggesting that volition is important for learning because autonomy increases commitment and problem analyses, whereas external mandates tend to produce defensive reactions that are not coupled to the organization in any useful way. Yet, other theories suggest that mandate is...
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作者：Alagoz, O; Maillart, LM; Schaefer, AJ; Roberts, MS
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); University of Pittsburgh; University System of Ohio; Case Western Reserve University; Pennsylvania Commonwealth System of Higher Education (PCSHE); University of Pittsburgh; Pennsylvania Commonwealth System of Higher Education (PCSHE); University of Pittsburgh
摘要：Living donors are a significant and increasing source of livers for transplantation, mainly because of the insufficient supply of cadaveric organs. We consider the problem of optimally timing a living-donor liver transplant to maximize the patient's total reward, such as quality-adjusted life expectancy. We formulate a Markov decision process (MDP) model in which the state of the process is described by patient health. We derive structural properties of the MDP model, including a set of intuit...
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作者：Katok, E; Roth, AE
作者单位：Pennsylvania Commonwealth System of Higher Education (PCSHE); Pennsylvania State University; Pennsylvania State University - University Park; Harvard University; Harvard University
摘要：Most business-to-business (B2B) auctions are used to transact large quantities of homogeneous goods, and therefore use multiunit mechanisms. In the B2B context, bidders often have increasing returns to scale, or synergies. We compare two commonly used auction formats for selling multiple homogeneous objects, both sometimes called Dutch auctions, in a set of value environments that include synergies and potentially subject bidders to the exposure and free-riding problems. We find that the desce...
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作者：Ziedonis, RH
作者单位：University of Michigan System; University of Michigan
摘要：How do firms avoid being fenced in by owners of patented technologies used, perhaps unknowingly, in the design or manufacture of their products? This paper examines the conditions under which firms expand their own portfolios of patents in response to potential hold-up problems in markets for technology Combining insights from transactions cost theory with recent scholarship on intellectual property and its exchange, I predict firms will patent more aggressively than otherwise expected when ma...
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作者：Ahuja, RK; Orlin, JB; Pallottino, S; Scaparra, MP; Scutellà, MG
作者单位：State University System of Florida; University of Florida; Massachusetts Institute of Technology (MIT); University of Pisa
摘要：We present a very large-scale neighborhood (VLSN) search algorithm for the capacitated facility location problem with single-source constraints. The neighborhood structures are induced by customer multiexchanges and by facility moves. We consider both traditional single-customer multi-exchanges, detected on a suitably defined customer improvement graph, and more innovative multicustomer multi-exchanges, detected on a facility improvement graph dynamically built through the use of a greedy sche...
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作者：Kamrad, B; Siddique, A
作者单位：Georgetown University; United States Department of the Treasury; Office of the Comptroller of the Currency
摘要：A common theme in the studies of flexible supply contracts has been the producer's profit-maximization problem without regard to the suppliers' reactions. However, suppliers do react and protect their downside against producer's operating policies by revising their strategies in a manner consistent with their profit-maximization objectives. This fact motivates our work. Using a real-options (contingent claims) approach, we analyze and value supply contracts in a setting characterized by exchan...
