Informs Annual Meeting 2017

MD60

INFORMS Houston – 2017

3 - Use of Simulation Optimization Technique in Operating Room Scheduling Musa Demirtas, PhD, Western New England University, Springfield, MA, 01119, United States, musa.demirtas@wne.edu Due to increasing number of patients, surgeries, and the healthcare industry needs to use their limited resources efficiently. Operating rooms (ORs) are considered among the most important and costly departments, and generate a significant portion of revenues. Also, planning and scheduling of surgeries for ORs is not an easy task due to uncertainties and limited resources. This study focuses on maximization of utilization of ORs and minimization of the patients’ length of stay so that hospitals can decrease their costs while increasing the satisfaction of patients. We developed a simulation-optimization model to allocate limited resources to improve utilization and minimize the patients stay. 362E Emerging Modalities and Multimodal Systems in Transportation Sponsored: Transportation Science & Logistics Sponsored Session Chair: Kostas Zavitsas, Imperial College London, 615, Skempton Building, Imperial College Road, London, SW72AZ, United Kingdom, k.zavitsas@gmail.com 1 - Optimization for Campaign-level Human Space Mission Design Koki Ho, University of illinois at Urbana-champaign, Urbana, IL, United States, kokiho@illinois.edu, Takaya Ukai, Hao Chen This presentation introduces an integrated method for campaign-level space mission design and optimization. Human space mission design process has become increasingly complex, and there is a larger demand for a rigorous optimization method to support it. Particularly, with more space infrastructure technologies such as lunar mining and on-orbit propellant depot, we need a multi-mission campaign-level design method to find an optimal deployment and utilization strategy of those infrastructure technologies. This presentation develops a method based on approximate dynamic programming and network optimization to efficiently optimize multi-mission space campaign over time. 3 - What Mode Should I Choose? Offering Travel Packages in Mobility-as-a-Service Era Ali Arian, University of Arizona, 415 N.Park Avenue, Tucson, AZ, 85719, United States, arian@email.arizona.edu, Alireza Ermagun, Yi-Chang Chiu Mobility as a Service (MaaS) concept aims at changing individual’s mode choice from personal owned vehicles towards options that are consumed as a service, and offered by combination of private and public transportation providers. Users of this service can subscribe to packages or pay by trip. This study considering individual’s activity pattern, proposes suitable personalized mobility packages. Algorithmic details alongside a case study using Metropia app data are presented. 4 - Optimal Multimodal Transport Networks Beyond Physical Infrastructures Kostas Zavitsas, Research Associate, Imperial College London, 615, Skempton Building, Imperial College Road, London, SW72AZ, United Kingdom, k.zavitsas@imperial.ac.uk Transport services have become increasingly complex in recent years with dynamic pricing strategies, smart path finding algorithms, live & personalised user notification, as well as new infrastructure and modes kicking in like automation and drones. The increasing complexity of transport services beyond the physical domain, make several of the systemic approaches dealing with multimodality in transport obsolete. Recognising that a major drive for this complexity is the increased availability and utilisation of data, this research attempts to establish a link between transport system performance and data utilisation. 362F Joint Session RAS/Practice: Roundtable B - Driverless Technology Implications to Freight Railways Sponsored: Railway Applications Sponsored Session Chair: Dharma Acharya, GE Transportation, Ponte Vedra, FL, 32081, United States, dharma.acharya@ge.com Co-Chair: Carl D. Van Dyke, TransNetOpt, West Windsor, NJ, 08550, United States, carl@cvdzone.com MD59 MD58

1 - Rail Renaissance: Responding to the Threat of Autonomous Trucks David T. Hunt, Oliver Wyman, One University Square,

Suite 100, Princeton, NJ, 08540, United States, david.hunt@oliverwyman.com, Jason Kuehn

SuperTrucks, platooning, and self-driving trucks will erode a large portion of the cost advantage rail intermodal currently holds for longer distance freight trips. Railroads will need to aggressively pursue cost reduction programs of their own to remain competitive in many large markets. This presentation will look ahead 10 years at the relative competitiveness of rail and truck under different scenarios, including implementation of a possible multi-phase strategy for lowering rail costs. 2 - Avoiding Irrelevance - A Future State of Railroading Daniel Plonk, Norfolk Southern Corporation, 1200 Peachtree Street, Atlanta, GA, United States, dan.plonk@nscorp.com Truckers have an “in” with Silicon Valley as well as with legislators and regulators. Meanwhile, railroads have been dragged by PTC to the technology table. This view presents not too “far out” ideas on how to achieve better competitiveness while reducing the operating ratio. 3 - The Evolution of Planning and Dispatching to Support Driverless Trains Giampaolo Orrigo, GE Transportation, 1990 W. Nasa Boulevard, Melbourne, FL, 32904, United States, giampaolo.orrigo@ge.com Autonomous train operation has been a desire of the rail industry for many years. The economics of it make it easy to see why: asset optimization, cost reduction, and safety. Autonomous systems are in use since the 90’s in the rail transit industry. It has been difficult though to apply it to freight networks, due to size, openness of the network, cost of infrastructure, and lack of “intelligent” systems to plan and control. Thanks to recent introduction of new main line ATO, ATP, optimized planning and automatic routing, driverless freight trains now seem more in reach. This presentation will explore how the evolution of the centralized planning and dispatching system will help this transformation. 4 - A Possible Railroad Response to Autonomous Trucks: Higher Quality of Service James Brooks, GE Global Research Center, Niskayuna, NY, United States, brooksja@ge.com The railroad industry has long had a significant cost advantage over the trucking mode of transportation. With the possible onset of autonomous trucks, this advantage may significantly erode forcing the rail industry to evolve to provide higher quality of service. In this talk, we will discuss some key barriers and technology needs for the industry to dramatically improve their transportation service levels. 370A Assessment Processes for OR/MS Education Sponsored: INFORMEd Sponsored Session Chair: Sadan Kulturel-Konak, Penn State Berks, Reading, PA, 19610, United States, sadan@psu.edu 1 - Examining Student Attitudes Toward Statistics Ping Wang, James Madison University, 1235 Sparrow Court, Harrisonburg, VA, 22802, United States, wangpx@jmu.edu, Susan Wright Palocsay Statistics is receiving renewed attention in the “analytics movement”. One avenue of investigation into student learning of statistics comes from educational psychology. Research findings suggest that students’ psychological attributes play an important role in statistics education. We will describe an instrument for measuring attitudinal factors shown to affect acquisition and retention of statistical skills and present test results from a sample of undergraduate business students. 2 - Peer Assessment of Teamwork: Challenges & Solutions Abdullah Konak, Penn State Berks, Tulpehocken Road, P.O. 7009, Reading, PA, 19610, United States, konak@psu.edu Student peer evaluations have several problems such as very high peer and self- ratings inconsistent with students’ expected skill levels. We redesign a peer assessment instrument from the literature based on behaviorally anchored rating scores in order to address some of these problems. In addition, we introduce new methods to identify anomalies in peer evaluations and incorporate them into the Peer Evaluation and Assessment Resource (PEAR) system, which is an online tool for peer evaluations. MD60

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