Informs 2015

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INFORMS Philadelphia – 2015
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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,
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, ,
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.
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34-Room 411, Marriott
Joint Session HAS/MSOM-Healthcare:
Managing Healthcare Operations
Sponsor: Health Applications
Sponsored Session
Chair: Craig Froehle, Professor, University of Cincinnati, Lindner
College of Business, Lindner College of Business, Cincinnati, OH,
45221-0130, United States of America,
1 - Data-driven Decision Making at Triage: Toward Better Patient
Streaming in the Emergency Department
Elham Torabi, University of Cincinnati, Cincinnati, OH,
, 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,
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, ,
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.
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, ,
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.
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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,
1 - Fundraising for Operational Expenditures in International
Humanitarian Aid
Laura Turrini, Köhne Logistics University, Grofler Grasbrook 17,
Hamburg, 20457, Germany,
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 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, 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, , 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, ,
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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