Production and Operations Management

最新文章

• The Boarding Patient: Effects of ICU and Hospital Occupancy Surges on Patient Flow AI翻译
  作者：Long, Elisa F.; Mathews, Kusum S.
  作者单位：University of California System; University of California Los Angeles; Icahn School of Medicine at Mount Sinai
  摘要：Patients admitted to a hospital's intensive care unit (ICU) often endure prolonged boarding within the ICU following receipt of care, unnecessarily occupying a critical care bed, and thereby delaying admission for other incoming patients due to bed shortage. Using patient-level data over two years at two major academic medical centers, we estimate the impact of ICU and ward occupancy levels on ICU length of stay (LOS), and test whether simultaneous surge occupancy in both areas impacts overall...
• Impact of IT Capability on the Performance of Port Operation AI翻译
  作者：Wang, Ziping; Yao, Dong-Qing; Yue, Xiaohang; Liu, John J.
  作者单位：Morgan State University; University System of Maryland; Towson University; University of Wisconsin System; University of Wisconsin Milwaukee
  摘要：Based on the resource-based view (RBV) and the transaction cost economics (TCE) theories, we study the impact of IT capability on the performance of port supply chain using an IT-enabled transaction cost frontier model where the IT capability is modeled as a unique production input and as an endogenous transaction attribute as well. By examining the optimal levels of IT capability for different port systems from the viewpoint of production cost and transaction cost, we find theoretical evidenc...
• Increasing Supply Chain Robustness through Process Flexibility and Inventory AI翻译
  作者：Simchi-Levi, David; Wang, He; Wei, Yehua
  作者单位：Massachusetts Institute of Technology (MIT); University System of Georgia; Georgia Institute of Technology; Boston College
  摘要：We study a hybrid strategy that uses both process flexibility and finished goods inventory for supply chain risk mitigation. The interplay between process flexibility and inventory is modeled as a two-stage robust optimization problem. In the first stage, the firm allocates inventory before disruption happens; in the second stage, after a disruption happens, the firm determines production quantities at each plant to minimize demand loss. Our robust optimization model can be solved efficiently ...
• Coordination of Autonomous Healthcare Entities: Emergency Response to Multiple Casualty Incidents AI翻译
  作者：Mills, Alex F.; Helm, Jonathan E.; Jola-Sanchez, Andres F.; Tatikonda, Mohan V.; Courtney, Bobby A.
  作者单位：Indiana University System; Indiana University Bloomington; IU Kelley School of Business; Arizona State University; Arizona State University-Tempe; Indiana University System; Indiana University Indianapolis; IU Kelley School of Business; Indiana University System; Indiana University Indianapolis
  摘要：In recent years, many urban areas have established healthcare coalitions (HCCs) composed of autonomous (and often competing) hospitals, with the goal of improving emergency preparedness and response. We study the role of such coalitions in the specific context of response to multiple-casualty incidents in an urban setting, where on-scene responders must determine how to send casualties to medical facilities. A key function in incident response is multi-agency coordination. When this coordinati...
• Estimation of Deprivation Level Functions using a Numerical Rating Scale AI翻译
  作者：Wang, Xihui; Wang, Xiang; Liang, Liang; Yue, Xiaohang; Van Wassenhove, Luk N.
  作者单位：Chinese Academy of Sciences; University of Science & Technology of China, CAS; University of Wisconsin System; University of Wisconsin Milwaukee; INSEAD Business School
  摘要：Evaluating and quantifying human suffering in humanitarian operations offers an innovative and potentially powerful way to assess the performance of humanitarian logistics (HL) and help build optimization models. Previous studies have suggested deprivation cost as a metric and have estimated deprivation cost functions for water using willingness-to-pay. Our study proposes deprivation levels, defined as the degree of human suffering caused by lack of access to a good or service, and estimates d...
• Ex-Post Funding: How Should a Resource-Constrained Non-Profit Organization Allocate Its Funds? AI翻译
  作者：Devalkar, Sripad; Sohoni, Milind G.; Arora, Priyank
  作者单位：Indian School of Business (ISB); University System of Georgia; Georgia Institute of Technology
  摘要：We study the funds allocation problem for a resource-constrained non-profit organization (NPO) that implements social development projects for public good. In addition to raising funds from donors who contribute prior to project implementation (traditional donors), the NPO uses a novel approach, which we term as the ex-post funding approach, to also raise funds from donors who contribute based on the results delivered by the NPO (ex-post donors). In this approach, the NPO uses its initial fund...
• Inventory Management and Debt Maturity Structure AI翻译
  作者：Hu, Qiaohai (Joice)
  作者单位：University of Missouri System; University of Missouri Saint Louis
  摘要：The current literature on the coordination of operations and finance does not differentiate long- and short-term debts and therefore is silent on how firms' debt maturity structure affects their short-run financial and operational decisions. Through a dynamic inventory model that explicitly captures a firm's periodic decisions on inventory replenishment quantity, the amount of dividends net of capital subscriptions, and the amount of short-term debt, we demonstrate that under coordinated short...
• Benefits of Surgical Smoothing and Spare Capacity: An Econometric Analysis of Patient Flow AI翻译
  作者：Diwas, Singh K. C.; Terwiesch, Christian
  作者单位：Emory University; University of Pennsylvania
  摘要：In this study, we examine the hospital's ability to admit patients from its emergency department. From a medical perspective, the number of patients being admitted should depend solely on the patients' clinical conditions. Using a large-scale econometric study that includes detailed operational and clinical data on all cardiac patient encounters from a set of 128 hospitals over a period of four years, we show that this is not the case. In particular, we find that independent of their medical c...
• Shelf Life Extending Packaging, Inventory Control and Grocery Retailing AI翻译
  作者：Li, Qing; Yu, Peiwen; Wu, Xiaoli
  作者单位：Hong Kong University of Science & Technology; Fudan University; South China University of Technology
  摘要：Retailers of perishable goods are often faced with the choice between more expensive packaging that can extend shelf life of their products and less expensive packaging that cannot. Different choices will lead to different sales, costs, and waste, and different choices require different inventory control policies. In this paper, we study the coordination of inventory and packaging decisions in a retailing environment. Items in an active package have a longer lifetime than those in a regular pa...
• Disaster Relief Inventory Management: Horizontal Cooperation between Humanitarian Organizations AI翻译
  作者：Toyasaki, Fuminori; Arikan, Emel; Silbermayr, Lena; Sigala, Ioanna Falagara
  作者单位：York University - Canada; Vienna University of Economics & Business; Vienna University of Economics & Business
  摘要：Cooperation among humanitarian organizations has attracted increasing attention to enhance effectiveness and efficiency of relief supply chains. Our research focuses on horizontal cooperation in inventory management which is currently implemented in the United Nations Humanitarian Response Depot (UNHRD) network. The present work follows a two-step research approach, which involves collection of empirical data and quantitative modeling to examine and overcome the coordination challenges of the ...