5期

最新文章

• Patient Streaming as a Mechanism for Improving Responsiveness in Emergency Departments AI翻译
  作者：Saghafian, Soroush; Hopp, Wallace J.; Van Oyen, Mark P.; Desmond, Jeffrey S.; Kronick, Steven L.
  作者单位：Arizona State University; Arizona State University-Tempe; University of Michigan System; University of Michigan; University of Michigan System; University of Michigan; University of Michigan System; University of Michigan; University of Michigan System; University of Michigan
  摘要：Crisis-level overcrowding conditions in emergency departments (EDs) have led hospitals to seek out new patient-flow designs to improve both responsiveness and safety. One approach that has attracted attention and experimentation in the emergency medicine community is a system in which ED beds and care teams are segregated and patients are streamed based on predictions of whether they will be discharged or admitted to the hospital. In this paper, we use a combination of analytic and simulation ...
• Pricing Games and Impact of Private Demand Information in Decentralized Assembly Systems AI翻译
  作者：Kalkanci, Basak; Erhun, Feryal
  作者单位：Massachusetts Institute of Technology (MIT); Stanford University
  摘要：This paper analyzes decentralized assembly systems under asymmetric demand information and sequential contracting. We reveal new insights on the value of contract type (price-only versus complex), demand information (complete versus asymmetric), and contract sequence (first mover versus second mover) to different players. Our results for the basic model show the following: (1) Complex contracts increase the suppliers' aggregate profit; however, individual suppliers do not necessarily benefit f...
• Ranking Games and Gambling: When to Quit When You're Ahead AI翻译
  作者：Anderson, Edward
  作者单位：University of Sydney
  摘要：It is common for rewards to be given on the basis of a rank ordering, so that relative performance amongst a cohort is the criterion. In this paper we formulate an equilibrium model in which an agent makes successive decisions on whether or not to gamble and is rewarded on the basis of a rank ordering of the final position amongst competing players. One application of this model is to the behavior of mutual fund managers who are paid depending on funds under management, which in turn are great...
• Comparative Statics Analysis of Multiproduct Newsvendor Networks Under Responsive Pricing AI翻译
  作者：Bish, Ebru K.; Zeng, Xin; Liu, Juqi; Bish, Douglas R.
  作者单位：Virginia Polytechnic Institute & State University
  摘要：We propose a novel analytic approach for the comparative statics analysis of multiproduct multiresource newsvendor networks under responsive pricing. Our approach involves exploiting the properties of the primal mathematical programming formulation and of the dual variables and linking those properties to the concept of convex orders and to properties of the underlying demand function. The use of convex orders allows us to establish our main results without restriction to a specific demand dis...
• One-Switch Conditions for Multiattribute Utility Functions AI翻译
  作者：Abbas, Ali E.; Bell, David E.
  作者单位：University of Illinois System; University of Illinois Urbana-Champaign; Harvard University
  摘要：We introduce a variety of new independence conditions for multiattribute utility functions that permit preference dependencies among the attributes of a decision problem. The hierarchy of new conditions varies in the degree to which it specifies the functional form, ranging from more general solutions with weaker constraints, to more specific solutions with stronger constraints. This formulation provides a wealth of new functional forms that a decision maker may use in a multiattribute decisio...
• Is Tail-Optimal Scheduling Possible? AI翻译
  作者：Wierman, Adam; Zwart, Bert
  作者单位：California Institute of Technology; California Institute of Technology; Vrije Universiteit Amsterdam; Centrum Wiskunde & Informatica (CWI)
  摘要：This paper focuses on the competitive analysis of scheduling disciplines in a large deviations setting. Although there are policies that are known to optimize the sojourn time tail under a large class of heavy-tailed job sizes (e.g., processor sharing and shortest remaining processing time) and there are policies known to optimize the sojourn time tail in the case of light-tailed job sizes (e.g., first come first served), no policies are known that can optimize the sojourn time tail across bot...
• Performance Guarantees for Empirical Markov Decision Processes with Applications to Multiperiod Inventory Models AI翻译
  作者：Cooper, William L.; Rangarajan, Bharath
  作者单位：University of Minnesota System; University of Minnesota Twin Cities; Target Corporation
  摘要：We consider Markov decision processes with unknown transition probabilities and unknown single-period expected cost functions, and we study a method for estimating these quantities from historical or simulated data. The method requires knowledge of the system equations that govern state transitions as well as the single-period cost functions (but not the single-period expected cost functions). The estimation procedure is based upon taking expectations with respect to the empirical distribution...
• First in Line Waiting Times as a Tool for Analysing Queueing Systems AI翻译
  作者：Koole, G. M.; Nielsen, B. F.; Nielsen, T. B.
  作者单位：Vrije Universiteit Amsterdam; Technical University of Denmark
  摘要：We introduce a new approach to modelling queueing systems where the priority or the routing of customers depends on the time the first customer has waited in the queue. This past waiting time of the first customer in line, W-FIL, is used as the primary variable for our approach. A Markov chain is used for modelling the system where the states represent both the number of free servers and a discrete approximation to W-FIL. This approach allows us to obtain waiting time distributions for complex...
• Measuring Eco-Inefficiency: A New Frontier Approach AI翻译
  作者：Chen, Chien-Ming; Delmas, Magali A.
  作者单位：Nanyang Technological University; University of California System; University of California Los Angeles; University of California System; University of California Los Angeles
  摘要：Growing social concerns over the environmental externalities associated with business activities are pushing firms to identify activities that create economic value with less environmental impact and to become more eco-efficient. Over the past two decades, researchers have increasingly used frontier efficiency models to evaluate productive efficiency in the presence of undesirable outputs, such as greenhouse gas emissions or toxic emissions. In this paper, we identify critical flaws in existin...
• An Overloaded Multiclass FIFO Queue with Abandonments AI翻译
  作者：Jennings, Otis B.; Reed, Josh E.
  作者单位：Columbia University; New York University
  摘要：In this paper we consider a single-server queue fed by K independent renewal arrival streams, each representing a different job class. Jobs are processed in a FIFO fashion, regardless of class. The total amount of work arriving to the system exceeds the server's capacity. That is, the nominal traffic intensity of the system is assumed to be greater than one. Jobs arriving to the system grow impatient and abandon the queue after a random amount of time if service has not yet begun. Interarrival...