-
作者：Davis, Andrew M.; Leider, Stephen
作者单位：Cornell University; University of Michigan System; University of Michigan
摘要：Suppliers are often reluctant to invest in capacity if they believe that they will be unable to recover their investment costs in subsequent transactions with buyers. In theory, a number of different contracts can solve this issue and induce first-best investment levels by the supplier. In this study, we investigate the performance of these contracts in a two-tier supply chain. We develop an experimental design where retailers and suppliers bargain over contract terms-and have the ability to m...
-
作者：Guajardo, Jose A.; Cohen, Morris A.
作者单位：University of California System; University of California Berkeley; University of Pennsylvania
摘要：The decisions of whether and how to adopt service differentiation are at the core of a firm's service operations strategy. This paper proposes a framework for service differentiation that highlights the identification and use of operating segments as a central component in the delivery of differentiated services. The notion of operating segments and the general empirical methodology to identify them proposed in this paper integrally considers the consumer's preferences and operational capabili...
-
作者：Cui, Yao; Duenyas, Izak; Sahin, Ozge
作者单位：Cornell University; University of Michigan System; University of Michigan; Johns Hopkins University
摘要：We consider a setting where the firm sells a main service (e.g., air travel) and an ancillary service (e.g., in-flight meal) to two types of consumers: high type (e.g., business travelers) and low type (e.g., leisure travelers). The firm decides whether to unbundle the ancillary service from the main service and charge separate prices for different service components. We study the interaction between the optimal ancillary unbundling strategy and the firm's use of main service price discriminat...
-
作者：Nasrollahzadeh, Amir Ali; Khademi, Amin; Mayorga, Maria E.
作者单位：Clemson University; North Carolina State University
摘要：In this study, we develop a flexible optimization framework for real-time ambulance dispatching and relocation. In addition to ambulance redeployment, we consider a general dispatching and relocation strategy by which the decision maker has the option to (i) select any available ambulance to dispatch to a call or to queue the call and (ii) send an idle ambulance to cover the location of an ambulance just dispatched to a call. We formulate the problem as a stochastic dynamic program, and, becau...
-
作者：Zhang, Yu; Kulkarni, Vidyadhar
作者单位：University of North Carolina; University of North Carolina Chapel Hill; University of North Carolina School of Medicine
摘要：We develop an automated teller machine (ATM) replenishment policy for a bank that operates multiple ATMs. The aim is to minimize the cost of replenishments and stockouts, taking into account the economies of scale involved in replenishing multiple ATMs simultaneously. When the replenishment is outsourced to an outside vendor, the replenishment cost is typically additive. However, when it is done by in-house operations, the replenishment cost is a submodular function of the set of ATMs being re...
-
作者：Hu, Wenqi; Chan, Carri W.; Zubizarreta, Jose R.; Escobar, Gabriel J.
作者单位：Columbia University; Kaiser Permanente
摘要：Unplanned transfers of patients from general medical-surgical wards to the intensive care unit (ICU) can occur as a result of unexpected patient deterioration. Such patients tend to have higher mortality rates and longer lengths of stay than direct admissions to the ICU. As such, the medical community has invested substantial efforts in the development of patient risk scores with the intent to identify patients at risk of deterioration. In this work, we consider how one such risk score could b...
-
作者：Paul, Alice; Feldman, Jacob; Davis, James Mario
作者单位：Brown University; Washington University (WUSTL); Uber Technologies, Inc.
摘要：We consider assortment and pricing problems when customers purchase products according to a nonparametric choice model. Each customer arrives with a preference list and will purchase the highest-ranking offered product in her preference list. We assume the set of customer classes is derived from paths in a tree, in which the order of nodes visited along each path gives the corresponding preference list. First, we study assortment problems, in which the goal is to find which products to offer t...
-
作者：Chen, Wei; Dawande, Milind; Janakiraman, Ganesh
作者单位：University of Kansas; University of Texas System; University of Texas Dallas
摘要：We consider a firm that solicits bids from a fixed-sized pool of yet-to-be-qualified suppliers for an indivisible contract. The contract can only be awarded to a supplier who passes a multistage qualification process. For each stage of the qualification process, the buyer incurs a fixed testing cost for each supplier she chooses to test. The buyer seeks an optimal mechanism-that is, one that minimizes her total expected cost. Motivated by the buyer's urgency (or the lack of it) of time for com...
-
作者：Wang, Ruxian
作者单位：Johns Hopkins University
摘要：Problem definition: Reference prices arise as price expectations against which consumers evaluate products in their purchase scenarios. We investigate what will happen when prospect theory (e.g., reference prices) meets consumer choice models from the perspectives of both the consumers and the firm. Academic/practical relevance: Consumers see multiple relevant products on a particular purchase occasion and often compare their prices to form the willingness to pay when considering whether to pu...
-
作者：Lu, Mengshi; Chen, Zhihao; Shen, Siqian
作者单位：Purdue University System; Purdue University; University of Michigan System; University of Michigan
摘要：Carsharing has been considered as an effective means to increase mobility and reduce personal vehicle usage and related carbon emissions. In this paper, we consider problems of allocating a carshare fleet to service zones under uncertain one-way and round-trip rental demand. We employ a two-stage stochastic integer programming model, in the first stage of which we allocate shared vehicle fleet and purchase parking lots or permits in reservation-based or free-floating systems. In the second sta...
