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作者：Wang, Xihui; Fan, Yu; Liang, Liang; De Vries, Harwin; Van Wassenhove, Luk N.
作者单位：Chinese Academy of Sciences; University of Science & Technology of China, CAS; INSEAD Business School
摘要：Framework agreements (FAs) are commonly used by relief organizations to cooperate with suppliers to pre-position relief items. Many Chinese local authorities with disaster responding experience choose a specific type of FA, the fixed framework agreement (FFA), which contains fixed terms for item quality, quantity, price, and delivery lead time. These FFAs, however, do not fully motivate suppliers to further improve the effectiveness of a humanitarian logistics (HL) operation. We suggest using ...
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作者：Wang, Yang; Goes, Paulo; Wei, Zaiyan; Zeng, Daniel
作者单位：Purdue University System; Purdue University; University of Arizona; Chinese Academy of Sciences; Institute of Automation, CAS
摘要：We study peer effects on individuals' contributions to a major form of word of mouth-online reviews. Provided by either consumers or third-party professionals, online reviews influence consumer purchasing decisions and hence sales. Individuals have conflicting incentives of free riding and contributing to social capital when writing reviews. We leverage a natural experiment, which led to an exogenous expansion in the user population of a major online review platform, to better understand the t...
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作者：Batt, Robert J.; Diwas, S. K. C.; Staats, Bradley R.; Patterson, Brian W.
作者单位：University of Wisconsin System; University of Wisconsin Madison; Emory University; University of North Carolina; University of North Carolina Chapel Hill; University of Wisconsin System; University of Wisconsin Madison
摘要：Hospital emergency departments (EDs) provide around-the-clock medical care, and as such are generally modeled as nonterminating queues. However, from the care provider's point of view, ED care is not a never-ending process, but rather occurs in discrete work shifts and may require passing unfinished work to the next care provider at the end of the shift. We use data from a large, academic medical center ED to show that the patients' rate of service completion varies over the course of the phys...
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作者：Abdallah, Tarek
作者单位：Northwestern University
摘要：Simple selling mechanisms are very appealing in practice, yet they may limit the firm's ability to extract a large consumer surplus. In this paper, we study the efficiency of a simple pure bundling mechanism in extracting the consumer surplus in the presence of nonnegative marginal costs and correlated valuations. The main question we address is how to quantify the benefits of adopting a simple pure bundling mechanism relative to other more complicated mechanisms, such as mixed bundling. We de...
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作者：Xiao, Wenli; Gaimon, Cheryl; Subramanian, Ravi; Biehl, Markus
作者单位：University of San Diego; University System of Georgia; Georgia Institute of Technology; York University - Canada
摘要：We analyze a firm's investment in environmental process improvement (EPI) to reduce the environmental impact (EI) of its manufacturing processes in relation to various internal firm characteristics and in response to different external regulatory drivers. We provide a deep understanding of how these internal and external forces cause the firm to pursue EPI earlier or later in the planning horizon and at an increasing or a decreasing rate over time. In particular, we show how a regulator can dr...
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作者：Cui, Zhijian; Shijith Kumar, P. M.; Goncalves, Dilney
作者单位：Chinese Academy of Sciences; University of Science & Technology of China, CAS; Nazarbayev University; IE University
摘要：Using an online experiment, this study examines the efficacy of two idea evaluation processes: scoring vs. ranking in the context of innovation management. In the scoring process, the evaluators are asked to rate the quality of each idea by assigning it a score (e.g., from 0 to 10), while in the ranking process the evaluator simply orders all ideas according to their perceived qualities. Our results suggest that the scoring process strictly outperforms the ranking process in terms of the likel...
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作者：Kalkanci, Basak; Rahmani, Morvarid; Toktay, L. Beril
作者单位：University System of Georgia; Georgia Institute of Technology
摘要：This special issue implores us to address sustainability from the lens of emerging economies and the role that innovation can play in this context. We posit that, for sustainable operations research to be relevant in the context of emerging economies, it needs to incorporate social concerns and conditions of underserved populations, with an emphasis on inclusion and equity. Especially important for addressing social concerns of these populations will be product/service innovation, process/busi...
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作者：Cao, Ping; Wang, Yaolei; Xie, Jingui
作者单位：Chinese Academy of Sciences; University of Science & Technology of China, CAS
摘要：This paper studies the priority pricing problem for a single-server queueing system with two priority classes in which customers have different sensitivities to delay. The system makes a fixed-delay announcement to inform arriving customers of the expected delay for each class, whereupon each customer must decide which class to join. Any customer who joins the priority class is charged a fixed priority price. Our examination of customers' joining behavior under any given priority prices reveal...
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作者：Freeman, Nickolas; Zhao, Ming; Melouk, Sharif; Mittenthal, John
作者单位：University of Alabama System; University of Alabama Tuscaloosa; University of Houston System; University of Houston
摘要：We study the widespread practice of assigning a single surgeon to two operating rooms (ORs), which is known as overlapping surgery. We first describe the fundamental trade-offs that motivate hospitals to employ the practice. Then, we conduct a mathematical analysis for the completion of a set of elective operations under an overlapping surgery policy and a more traditional, serial scheduling policy. We use this analysis, along with a cost function that considers surgeon idle time and total OR ...
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作者：Jardim, Felipe S.; Chakraborti, Subhabrata; Epprecht, Eugenio K.
作者单位：University of Alabama System; University of Alabama Tuscaloosa
摘要：Performance measures of control charts with estimated parameters are random variables and vary significantly across reference samples. In this context, a recent idea has been to study the distribution of the realized (or conditional) in-control average run length (CARL(0)) [or, equivalently, the conditional false-alarm rate (CFAR)] for a set of estimates from a given reference sample and apply the exceedance probability criterion (EPC) to design control charts that ensure a desirable in-contro...
