2015 Informs Annual Meeting

MC34

INFORMS Philadelphia – 2015

3 - Forecasting Outcomes of Donor Liver Allocation Policies Given Growing Disparities in Supply and Demand Rachel Townsley, North Carolina State University, Industrial and Systems Engineering, Raleigh, NC, rmtownsl@ncsu.edu, Maria Mayorga Health trends in the US general population point to a growing gap in the supply and demand of livers for transplantation. Obesity, diabetes, and an aging population are the cause of declining donor liver quality as well as the cause of growing transplant waitlists. We use UNOS data to develop agent based simulation models and evaluate 30-year outcomes of liver allocation in the US in light of these trends. 4 - An Efficient Contiguity-enforcement Algorithm for Practical Geographic Districting Problems Douglas King, University of Illinois at Urbana-Champaign, 117 Transportation Bldg., 104 S. Mathews Ave., MC-238, Urbana, IL, 61801, United States of America, dmking@illinois.edu, Sheldon Jacobson, Edward Sewell Geographic districting applications include congressional districting, police districting, and deployment of emergency services. Often, these districts are required to be contiguous, imposing a substantial computational burden during optimization. By integrating assessment of district holes (i.e., enclaves), this talk presents efficient algorithms for enforcing contiguity when district composition is optimized with local search. Practical scaling properties of these algorithms will be discussed. Chair: Craig Froehle, Professor, University of Cincinnati, Lindner College of Business, Lindner College of Business, Cincinnati, OH, 45221-0130, United States of America, froehlecm@ucmail.uc.edu 1 - Data-driven Decision Making at Triage: Toward Better Patient Streaming in the Emergency Department Elham Torabi, University of Cincinnati, Cincinnati, OH, torabiem@mail.uc.edu, Craig Froehle, Christopher Miller The inadequacy of the ESI triage system potentially contributes to suboptimal patient routing and ED congestion. Using partitioning methods, we define new prioritization policies to further stratify the ESI-3 patients who make 50% of all patients. We evaluate the performance of the system under new policy using queueing models. 2 - The Cost of Waiting in Healthcare and Hospitality Services Craig Froehle, Professor, University of Cincinnati, Lindner College of Business, Lindner College of Business, Cincinnati, OH, 45221- 0130, United States of America, froehlecm@ucmail.uc.edu, Rohit Verma The perceived cost of waiting to patients and customers has proven difficult to measure. Using a set of experiments, we compare how waiting is perceived in the contexts of healthcare and hospitality services. We examine the perceptions of waiting as well as “sequence” effects — where the wait occurs within the service process — and draw preliminary conclusions about how healthcare and hospitality services might better approach the management and mitigation of customer and patient waiting. 3 - Impact of Inspection Outcomes on Nursing Home Care Quality - Role of Ownership and Affiliation Rachna Shah, Professor, University of Minnesota, Minneapolis, MN, United States of America, shahx024@umn.edu, Gopalakrishnan Narayanamurthy, Anand G Inspections and their impact on quality outcomes have been studied in many different settings. Surprisingly, this relationship has not been examined in the healthcare sector. In this study, we investigate the impact of inspection outcomes on future clinical (evidence-based) and experiential (patient-centered) quality in nursing homes using a unique secondary panel data. MC34 34-Room 411, Marriott Joint Session HAS/MSOM-Healthcare: Managing Healthcare Operations Sponsor: Health Applications Sponsored Session

4 - Addressing Challenges of Scheduling Providers at Major Teaching Hospitals Brian Lemay, University of Michigan, 1205 Beal Avenue, Ann Arbor, MI, 48109, United States of America, blemay@umich.edu, Amy Cohn When using optimization models for solving healthcare provider scheduling problems, multi-criteria objective functions are necessary, but often result in undesirable schedules. Additionally, it is frequently not possible to satisfy every scheduling preference, so compromises must be made to resolve the infeasible problem instances. We discuss our methods for overcoming these multi-criteria objective and infeasibility challenges for scheduling providers at two major teaching hospitals. MC35 35-Room 412, Marriott Practice-Based Research in Humanitarian Operations Management Sponsor: Public Sector OR Sponsored Session Chair: Maria Besiou, Kuehne Logistics University, Grosser Grasbrook 17, Hamburg, Germany, Maria.Besiou@the-klu.org 1 - Fundraising for Operational Expenditures in International Humanitarian Aid Laura Turrini, Köhne Logistics University, Grofler Grasbrook 17, Hamburg, 20457, Germany, Laura.Turrini@the-klu.org, Maria Besiou, Joern Meissner Effectiveness of humanitarian programs depends on funding. Based on the programs operational needs, international humanitarian organizations estimate the operational expenditures and then appeal for donations. Donations affect services and the number of beneficiaries they will be able to reach.In this paper, using multiple regression analysis, we aim to shed more light on the operational implications of fundraising and on possible improvements of fundraising strategies for humanitarian programs. 2 - Disaster Response Test Cases: Representing Real Disasters Azrah Azhar, Graduate Student, George Washington University, 800, 22nd Street NW, Washington, DC, 20052, United States of America, azrah@gwu.edu, Erica Gralla In the humanitarian logistics literature, algorithms and policies are recommended based on their performance in test problem instances. Therefore, it is important that these test problems are representative of real disasters. We study twenty- seven real disaster instances, identify their characteristics and compare them to test problems from the humanitarian literature. 3 - Transition to Practice of Access Restoration in Post-disaster Humanitarian Logistics Felipe Aros-Vera, Rensselaer Polytechnic Institute, Troy, NY United States of America, arosvm2@rpi.edu, Jose Holguin-Veras This presentation focuses on the technical challenges of the transition to practice of access restoration methodologies after disasters. It gives an overview of the integration of systems that provide: (1) initial assessment of transportation network conditions, (2) mathematical modeling, and (3) decision making process on the ground. The presentation builds on the implementation of access restoration models into the disaster response plans in the city of New York. 4 - Volunteer Management in Charity Storehouses Maria Besiou, Kuehne Logistics University, Grosser Grasbrook 17, Hamburg, Germany, Maria.Besiou@the-klu.org, Alfonso Pedraza-Martinez We study volunteer management at a large faith-based organization. The whole supply chain operates exclusively with volunteers (from supply to delivery). We focus our study on the preparation of the beneficiaries’ orders by volunteers in a storehouse. There are different categories of volunteers; some are more experienced while others may work in the system for the first time. Using empirical data we build a model to explore the drivers of on-time order fulfillment at the storehouse level.

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