Informs 2015

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INFORMS Philadelphia – 2015
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4 - Strategic Security Screening Queue with Abandonments
Ali Pala, PhD Student, University at Buffalo, 441 Delta Rd, Apt. 2,
Amherst, NY, 14226, United States of America,
, Jun Zhuang
Risk of threats and congestion are the major problems in security screening
procedures. Strict security screening policies help detect or deter the adversary
applicants, but also lead to congestion which may discourage good applicants
from applying or cause unnecessary abandonment from the screening queue. This
research focuses on a novel strategic queueing system and proposes a data
supported game-theoretical model to study this problem.
5 - When Security Games Go Green: Designing Defender Strategies
to Prevent Poaching and Illegal Fishing
Fei Fang, University of Southern California, 941 Bloom Walk,
SAL 300, Los Angeles, CA, United States of America,
Milind Tambe, Peter Stone
Building on the successful applications of Stackelberg Security Games (SSGs) to
protect infrastructure, researchers have begun focusing on applying game theory
to green security domains such as protection of endangered animals and fish
stocks. We introduce Green Security Games (GSGs), a novel game model for
green security domains and provide algorithms to plan effective sequential
defender strategies and to learn adversary models that further improves defender
performance.
TC66
66-Room 113C, CC
Managing Airport Arrival Flows
Sponsor: Aviation Applications
Sponsored Session
Chair: John-Paul Clarke, Georgia Tech, 270 Ferst Drive, N.W.,
Atlanta, GA, United States of America,
1 - Combining Control by CTA and Enroute Speed Adjustment to
Improve Ground Delay Program Performance
James Jones, University of Maryland, 3117 A.V Williams, College
Park, MD, 20742, United States of America,
Michael Ball, David Lovell
Over the past several years there have been proposals and discussions regarding a
move from the use of controlled times of departure (CTDs) to controlled times of
arrival (CTAs) for ground delay programs (GDPs) in the U.S. In this talk we show
that, by combining control by CTA with the judicious use of en route speed
control, significant improvements to GDP performance can be achieved.
2 - Robust Airport Gate Planning – First Order Stability Concept
Bruno Santos, Assistant Professor, TU Delft, Faculty of Aerospace
Engineering, Delft, Netherlands, ,
Dennis Buitendijk, Joris De Kaey, John-Paul Clarke
We present a novel approach to the airport gate assignment problem entitled
“First Order Stability”(FOS). The FOS has the goal of increasing gate plans
robustness and uses two key concepts to achieve this: it postpones the gate
scheduling to a moment when uncertainty is reduced significantly; and it
stabilizes the order of flights, minimizing the risk on disturbances. A real case
study application showed that FOS provides more stable solutions that can make
equal or higher usage of the capacity.
3 - Heuristic Gate Assignment Model for Airports with Multiple
Parallel Concourses
Parth Shah, Graduate Research Assistant, Georgia Tech, 401 17th
Street, Apt. 5205, Atlanta, GA, 30363, United States of America,
John-Paul Clarke
Ramp operation model of Atlanta International airport is simulated to understand
the characteristic of aircraft movement on ramp. A new heuristic approach is
adopted in which aircraft are assigned gates based on their direction of ramp entry
and exit points. The model is calibrated using ASPM traffic data. The results show
that the proposed new method achieves 23% reduction in total ground delay by
significantly reducing the gate wait, taxi blocking and pushback blocking time.
TC67
67-Room 201A, CC
Consolidation in Transport
Sponsor: TSL/Freight Transportation & Logistics
Sponsored Session
Chair: Wentao Zhang, University of Southern California,
Los Angeles, CA, United States of America, United States of America,
1 - Frequency-Location Clustering for Efficient Inbound Routes to
Consolidation Centers
Zhijie Dong, Cornell University, United States of America,
, Mark A. Turnquist
An optimization model addresses joint decisions of frequency of pickup from
individual suppliers and grouping suppliers into collection routes by clustering in
both time and space. The objective is to minimize total logistics (transportation
plus inventory) cost. The optimization problem is equivalent to a single-source
fixed charge facility location problem, and near-optimal solutions are found using
a very efficient heuristic algorithm. Results of numerical experiments show the
effectiveness of both the model formulation and the heuristic solution method. A
case study demonstrates that substantial total cost savings can be achieved in
realistic applications using the combined frequency-location clustering method.
2 - A Lagrangian-based Strategy to Consolidate Freight of
Perishable Products
Christine Nguyen, Northern Illinois University, DeKalb, IL, United
States of America, United States of America, ,
Alejandro Toriello, Maged Dessouky
Our research focuses on a supply chain of suppliers with low demand for
perishable products, where consolidating their product would take advantage of
better shipping FTL rates versus LTL or courier rates. We consider a Lagrangian
Relaxation formulation that includes a capacity constraint for a shared
consolidation center. We develop an LR-based heuristic that aims to balance the
consolidated economical shipping cost and the inventory cost at the consolidation
center.
3 - Cost Sharing Mechanism Design for Supply Chain Consolidation
and Cooperation in Agriculture Industry
Wentao Zhang, University of Southern California, Los Angeles,
CA, United States of America, United States of America,
, Nelson Uhan, Alejandro Toriello,
Maged Dessouky
We design cost sharing mechanisms for a consolidation center where suppliers
who need to ship products to a common destination can consolidate their
shipments and save transportation costs. Using the Moulin mechanism
framework, we propose cost sharing mechanisms that are group strategyproof and
budget-balanced. By studying the efficiency of these mechanisms empirically and
analytically, we show that the outcome of these mechanisms often closely
resembles an optimal solution of a central planner.
4 - Temporal Shipment Consolidation under Stochastic
Dynamic Demand
Sila Cetinkaya, SMU, EMIS and ITOM Departments, Dallas, TX,
United States of America, , Liqing Zhang
We consider stochastic dynamic shipment consolidation problems with general
demands and characterize the structural properties of optimal shipment release
policies under general cost structures with scale economies and quantity
discounts.
TC68
68-Room 201B, CC
TSL Prize Session
Sponsor: Transportation, Science and Logistics
Sponsored Session
Chair: Barrett Thomas, Associate Professor, The University of Iowa,
W272 Pappajohn Business Building, Iowa City, IA, 52242,
United States of America,
1 - TSL Prize Winners
Barrett Thomas, Associate Professor, The University of Iowa,
W272 Pappajohn Business Building, Iowa City, IA, 52242,
United States of America,
The TSL 2015 Prize Session finalists will present their award-winning work in this
session. Prize committee chairs will say a few words about the winning selections.
TC68