Production and Operations Management

最新文章

• Value of information with manufacturer encroachment AI翻译
  作者：Guan, Huiqi; Yang (Ben), Zhibin; Gurnani, Haresh
  作者单位：Fudan University; University of Oregon; Wake Forest University; Wake Forest University
  摘要：We study the value of information in a supply chain where the manufacturer introduces a direct-selling channel to encroach in the retailer's market. Based on different information structures regarding the direct-selling cost for the manufacturer, we analyze three models: incomplete information model, asymmetric information model, and full information model. By comparing the firms' profits in these models, we derive the value of the manufacturer's information acquisition and the value of sharin...
• Tracking disclosure change trajectories for financial fraud detection AI翻译
  作者：Liu, Rong; Huang, Jujun; Zhang, Zhongju
  作者单位：Stevens Institute of Technology; Arizona State University; Arizona State University-Tempe
  摘要：The global economic disruption brought by COVID-19 crisis can set a stage for the prevalence of financial statement frauds, which jeopardize the efficient functioning of capital markets. In this paper, we propose a nuanced method to detect frauds by tracking granular changes in disclosures over time. Specifically, we first align paragraphs between consecutive disclosures by their similarities. This alignment can be solved as an optimization-based matching problem. Then we identify three types ...
• Pausing transplants in the face of a global pandemic: Patient survival implications AI翻译
  作者：Zhang, Minmin; Wang, Guihua; Li, Jun; Hopp, Wallace J.; Lee, David D.
  作者单位：University of Texas System; University of Texas Dallas; University of Michigan System; University of Michigan; Loyola University Chicago
  摘要：The coronavirus disease 2019 (COVID-19) pandemic has disrupted normal operating procedures at transplant centers. With the possibility that COVID-19 infection carries an overall 4% mortality rate and potentially a 24% mortality rate among the immunocompromised transplant recipients, many transplant centers considered the possibility of slowing down and even potentially pausing all transplants. Many proposals regarding the need for pausing organ transplants exist; however, much remains unknown....
• Managing material shortages in project supply chains: Inventories, time buffers, and supplier flexibility AI翻译
  作者：Kouvelis, Panos; Chen, Xingxing; Xia, Yu
  作者单位：Washington University (WUSTL); University of Richmond; William & Mary; Washington University (WUSTL)
  摘要：We consider a two-stage project supply chain with a downstream project firm producing an engineer-to-order (ETO) complex product or a make-to-order (MTO), low-volume, customized industrial product as a project, and an upstream contract supplier supplying a key material to the project. The project faces two uncertainties: project activity time uncertainty and material consumption uncertainty, which may be positively or negatively correlated. In anticipation of these uncertainties, the project f...
• Dynamics between warehouse operations and vehicle routing AI翻译
  作者：Rijal, Arpan; Bijvank, Marco; de Koster, Rene
  作者单位：University of Groningen; University of Calgary; Erasmus University Rotterdam - Excl Erasmus MC; Erasmus University Rotterdam; University of Groningen
  摘要：When scheduling the distribution of ordered items from a warehouse to customers, the transportation planning is generally done first and serves as input for planning warehouse operations. Such a sequential approach can lead to substantial inefficiencies when the customer deliveries are restricted by time windows, and the warehouse has limited resources available (both order pickers and space in the staging area). This paper studies the trade-offs between warehouse operations and transportation...
• Judge me on my losers: Do robo-advisors outperform human investors during the COVID-19 financial market crash? AI翻译
  作者：Liu, Che-Wei; Yang, Mochen; Wen, Ming-Hui
  作者单位：Indiana University System; Indiana University Bloomington; IU Kelley School of Business; University of Minnesota System; University of Minnesota Twin Cities
  摘要：As financial institutions increasingly offer robo-advisors (RAs) as a service, the empirical evidence on their performance, particularly during market downturns, remains limited. We study the impact of using RAs on investment performance during the 2020 financial crisis caused by the COVID-19 global pandemic. We obtain daily portfolio and transaction data of investors on an online investment platform. Besides making investment decisions by themselves, investors can also leverage an RA system o...
• A machine learning approach to deal with ambiguity in the humanitarian decision-making AI翻译
  作者：Grass, Emilia; Ortmann, Janosch; Balcik, Burcu; Rei, Walter
  作者单位：University of Mannheim; Universite de Montreal; University of Quebec; University of Quebec Montreal; Ozyegin University; University of Quebec; University of Quebec Montreal; Universite de Montreal; University of Mannheim
  摘要：One of the major challenges for humanitarian organizations in response planning is dealing with the inherent ambiguity and uncertainty in disaster situations. The available information that comes from different sources in postdisaster settings may involve missing elements and inconsistencies, which can hamper effective humanitarian decision-making. In this paper, we propose a new methodological framework based on graph clustering and stochastic optimization to support humanitarian decision-mak...
• Partial centralization in a durable-good supply chain AI翻译
  作者：Li, Jin; Yang, Xiaodong; Shi, Victor; Cai, Gangshu (George)
  作者单位：Zhejiang Gongshang University; Shanghai University of International Business & Economics; Wilfrid Laurier University; Santa Clara University
  摘要：There has been extensive research on the strategic choice between supply chain centralization and decentralization. However, most research assumes complete centralization or complete decentralization but omits the commonly adopted supply chain structure of partial centralization. With partial centralization, a firm owns a portion, but not all, of its partner. To help fill this research gap, in this paper, we make a major contribution by explicitly analyzing partial centralization in a supply c...
• Amiya Chakravarty Obituary AI翻译
  作者：[Anonymous]
• Opportunities for system dynamics research in operations management for public policy AI翻译
  作者：Anderson, Edward G. G.; Keith, David R. R.; Lopez, Jose
  作者单位：University of Texas System; University of Texas Austin; University of Texas System; University of Texas Austin
  摘要：Operations management (OM) in the public policy context is extremely complex with many mutually interacting factors characterized by feedback loops, delays and nonlinearities, as well as multiple stakeholders pursuing divergent objectives. Prior researchers have called for a systems approach in these contexts, arguing that standard OM methodologies such as mathematical programming, and queuing theory often cannot fully address these problems. Researchers have employed one such systems approach...