M&SOM - Manufacturing AND Service Operations Management

最新文章

• Allocating Emissions Among Co-Products: Implications for Procurement and Climate Policy AI翻译
  作者：Sunar, Nur; Plambeck, Erica
  作者单位：University of North Carolina; University of North Carolina Chapel Hill; Stanford University
  摘要：Co-production (simultaneous production of multiple outputs) occurs in some emission-intensive basic material and agricultural industries. This paper is motivated by ones in which a supplier sells its primary product to a buyer that incurs an emissions cost (voluntarily, or due to government-imposed climate policy) and sells co-products into markets without emissions costs. Emission-accounting standards provide three candidate rules for allocating the supplier's emissions among its products. Th...
• Managing Rentals with Usage-Based Loss AI翻译
  作者：Slaugh, Vincent W.; Biller, Bahar; Tayur, Sridhar R.
  作者单位：Cornell University; General Electric; Carnegie Mellon University
  摘要：Motivated by innovative rental business models, we study a rental system with random loss of inventory due to use. We utilize a discrete-time model in which the inventory level is chosen before the start of a finite rental season, and customers not immediately served are lost. Demand, rental durations, and rental unit lifetimes are stochastic; sample path coupling allows us to derive structural results that hold under limited distributional assumptions. Considering different recirculation rule...
• Strategic Safety-Stock Placement in Supply Chains with Capacity Constraints AI翻译
  作者：Graves, Stephen C.; Schoenmeyr, Tor
  作者单位：Massachusetts Institute of Technology (MIT)
  摘要：We generalize the guaranteed-service (GS) model for safety-stock placement in supply chains to include capacity constraints. We first examine the guaranteed-service model for a capacitated single-stage system with bounded demand. We characterize the optimal inventory policy, which depends on the entire demand history. Due to this complexity, we develop a heuristic, namely a constant base-stock policy with censored ordering. This is an order-up-to policy but with its replenishment orders censor...
• Using Future Information to Reduce Waiting Times in the Emergency Department via Diversion AI翻译
  作者：Xu, Kuang; Chan, Carri W.
  作者单位：Stanford University; Columbia University
  摘要：The development of predictive models in healthcare settings has been growing; one such area is the prediction of patient arrivals to the emergency department (ED). The general premise behind these works is that such models may be used to help manage an ED that consistently faces high congestion. In this work, we propose a class of proactive policies that utilize future information of potential patient arrivals to effectively manage admissions into an ED while reducing waiting times for patient...
• Contracting for On-Time Delivery in the US Influenza Vaccine Supply Chain AI翻译
  作者：Dai, Tinglong; Cho, Soo-Haeng; Zhang, Fuqiang
  作者单位：Johns Hopkins University; Carnegie Mellon University; Washington University (WUSTL)
  摘要：Although influenza vaccine shortage is often attributed to low supply, it has been observed that even with abundant supply, a major shortage can still occur because of late delivery. In this paper, motivated by the influenza vaccine industry, we study a supply chain contracting problem in the presence of uncertainties surrounding design, delivery, and demand of the influenza vaccine. In this supply chain, a manufacturer has insufficient incentive to initiate at-risk early production prior to t...
• The Vehicle Mix Decision in Emergency Medical Service Systems AI翻译
  作者：Chong, Kenneth C.; Henderson, Shane G.; Lewis, Mark E.
  作者单位：Cornell University
  摘要：We consider the problem of selecting the number of advanced life support (ALS) and basic life support (BLS) ambulances-the vehicle mix-to deploy in an emergency medical service (EMS) system, given a budget constraint. ALS ambulances can treat a wider range of emergencies, whereas BLS ambulances are less expensive to operate. To this end, we develop a framework under which the performance of a system operating under a given vehicle mix can be evaluated. Because the choice of vehicle mix affects...
• The Limits of Planned Obsolescence for Conspicuous Durable Goods AI翻译
  作者：Agrawal, Vishal V.; Kavadias, Stylianos; Toktay, L. Beril
  作者单位：Georgetown University; University of Cambridge; University System of Georgia; Georgia Institute of Technology
  摘要：An extensive body of literature argues for the benefits of planned obsolescence, the strategy of designing products with low durability to induce repeat purchases from the consumers and allow the firm to sell a larger volume. Yet, several firms avoid planned obsolescence and instead offer products with high durability. In this paper, we offer a demand-side rationale for a high-durability product design strategy: the exclusivity seeking consumer behavior associated with conspicuous consumption....
• A Modeling Framework for Control of Preventive Services AI翻译
  作者：Ormeci, E. Lerzan; Gunes, Evrim Didem; Kunduzcu, Derya
  作者单位：Koc University; Koc University
  摘要：We present a modeling framework for facilities that provide both screening (preventive) and diagnostic (repair) services. The facility operates in a random environment that represents the condition of the population that needs screening and diagnostic services, such as the disease prevalence level. We model the environment as a partially endogenous process: the population's health can be improved by providing screening services, which reduces future demand for diagnostic services. We use event...
• A Scenario-Based Approach for Operating Theater Scheduling Under Uncertainty AI翻译
  作者：Freeman, Nickolas K.; Melouk, Sharif H.; Mittenthal, John
  作者单位：University of Houston System; University of Houston; University of Alabama System; University of Alabama Tuscaloosa
  摘要：Elective operation scheduling significantly affects the financial health of a hospital and additional metrics important to stakeholders in an operating theater (OT) environment. In this research, we develop a novel scheduling formulation that explicitly considers the uncertainty in elective operation durations and also plans for potential randomly arriving urgent demands. Using a scenario-based modeling approach, the objective of this formulation is to maximize the expected profit associated w...
• Coil Batching to Improve Productivity and Energy Utilization in Steel Production AI翻译
  作者：Tang, Lixin; Meng, Ying; Chen, Zhi-Long; Liu, Jiyin
  作者单位：Northeastern University - China; University System of Maryland; University of Maryland College Park; Loughborough University
  摘要：This paper investigates a practical batching decision problem that arises in the batch annealing operations in the cold rolling stage of steel production faced by most large iron and steel companies in the world. The problem is to select steel coils from a set of waiting coils to form batches to be annealed in available batch annealing furnaces and choose a median coil for each furnace. The objective is to maximize the total reward of the selected coils less the total coil-coil and coil-furnac...