Informs Annual Meeting 2017

SB44

INFORMS Houston – 2017

4 - The Zocdoc Effect: How Does Online Information Impact Appointment Availability in Out-patient Care? Yuqian Xu, University of Illinois at Urbana-Champaign, Champaign, IL, United States, yxu@stern.nyu.edu, Mor Armony In this paper, we propose a queueing model to study the impact of online healthcare channels. We analyze the impact of in-clinic service time and the number of offered appointments on patient joining decisions. We consider doctor’s revenue maximization problem with these two service rates. We show that when the market size is large, the doctor uses partial market coverage strategy; while when the market size is small, the doctor uses full market coverage strategy. We then extend our model into a multiple doctors setting and show that (i) in small markets, each additional doctor induces each doctor to slow down further; (ii) otherwise, the market is large enough that each server acts as a local monopolist. 360C Facility Location in Humanitarian and Disaster Response Logistics Sponsored: Public Sector OR Sponsored Session Chair: Felipe Aros-Vera, Ohio University, Athens, OH, 45701, United States, aros@ohio.edu 1 - A Model for Strategic Facility Location and Tactical Resources Allocation under Uncertainty for Natural Disaster Response Adan Rodriguez, Universidad Complutense de Madrid, Facultad de CC. Matematicas, Plaza de las Ciencias, 3, Madrid, 28040, Spain, adanro01@ucm.es, Begona Vitoriano, Laureano F. Escudero, Juan F. Monge, M. Teresa Ortuno A strategic preparedness facility location and tactical preparedness resource allocation model is presented for a multi-period stochastic problem to manage natural disaster’s response. That preparedness consists of warehouses location and capacity assignment and extension planning over years, and annual planning for procurement and allocation of commodities to warehouses. Uncertainty is taken into account including different scenarios of natural disasters in each season into a year, affecting operations management and costs. The model is being developed for public managers, but it also could be extended to other type of organisations. 2 - Facility Location and Allocation of Resources in Post-disaster Humanitarian Logistics Felipe Aros-Vera, Ohio University, 277 Stocker Center, 1 Ohio University, Athens, OH, 45701, United States, aros@ohio.edu, Nick Loree This presentation introduces a facility location model that explicitly accounts for deprivation costs incurred by survivors in post disaster environments. It provides realistic measures of disaster response logistics by allowing for multiple sourcing, number of facilities as a model output, capacity limitations, and inventory allocation decisions. 3 - Transportation of Hazardous Materials under a Disaster Settings Considering Risk Perception This research has two main stages: stage 1 focuses on measure how people perceive risk within a network that transport hazardous materials, and how this perception of risk affects their decision making process. Stage 2 tries to develop a mathematical model to route this hazardous materials in order to minimize risk of the cargo but also the risk perception of the people sharing the network. Both stages are under a natural disaster settings (static or dynamic). Also an evolutive algorithm with learning machine properties (ant controlled genetic algorithm) was created to solve this problem. 4 - Location, Allocation and Prepositioning of Stock and Preparation and Response to Natural Disasters Pamela Alvarez, Universidad Andres Bello, Manquehue sur 1076, dpto NA 1002, Santiago, AL, Chile, palvarez@unab.cl, Andrés Bronfman The effects of natural disasters are unpredictable and emergency plans must be adapted to each situation. This work proposes a methodology in stages to address the problem of preparation-response. Phase 1 generates the base response plan with a multiobjective model that determines the location of shelters and warehouses, and assigns the population to this facilities. It seeks to minimize evacuation and supply times, and costs. Phase 2 (post disaster) considers the base plan and, with a new model, locates new shelters and warehouses, and reassigns the population according to the new configuration. The methodology was applied in the city of Iquique, Chile. SB44 Ruben Yie, Universidad el Norte, Km 5 Antigua via Puerto Colombia, Barranquilla, Colombia, ryie@uninorte.edu.co, Ana M. Bedoya, Fabian Betancur

5 - A Humanitarian Logistics Inventory Management Model for Post- disaster Azadeh Sadeghi, 2nd Andover Rd., Apt B11, Athens, OH, 45701, United States, as262914@ohio.edu This presentation focuses on inventory management and control policies for post disaster humanitarian logistics. A mathematical model is proposed in which both traditional inventory and logistics costs and the cost of human suffering as a consequence of late delivery of the supplies are considered. The proposed model is also applicable to facility location humanitarian logistics problem. 360D JFIG Panel Discussion: Tips for Writing CAREER Propsals Sponsored: Junior Faculty JFIG Sponsored Session Chair: Jose Luis Walteros, University at Buffalo, SUNY, 413 Bell Hall, Buffalo, NY, 14260, United States, josewalt@buffalo.edu 1 - JFIG Panel Discussion: Tips for Writing CAREER Proposals Jose Luis Walteros, University at Buffalo, SUNY, 413 Bell Hall, Buffalo, NY, 14260, United States, josewalt@buffalo.edu The panelists consist of past NSF CAREER awardees. The panelists will share their experience in the process of getting their awards. They will discuss failures, successes and provide some tips on how to properly plan and consolidate a solid proposal. They will also answer questions from the attendees. 2 - Panelist Changhyun Kwon, University of South Florida, 4202 E. Fowler Ave. ENB118, Tampa, FL, 33620, United States, chkwon@usf.edu 3 - Panelist Esra Buyuktahtakin, New Jersey Institute of Technology, Industrial and Manufacturing Engineering Dept, Newark, NJ, United States, esratoy@njit.edu 4 - Panelist Alejandro Toriello, Georgia Institute of Technology, 765 Ferst Drive NW, Atlanta, GA, 30332, United States, atoriello3@isye.gatech.edu 360E Latest Developments in Scheduling Invited: Project Management and Scheduling Invited Session Chair: Zhi-Long Chen, University of Maryland, College Park, MD, 20742-1815, United States, zchen@rhsmith.umd.edu 1 - Online Scheduling of Ordered Flow Shops Kangbok Lee, Pohang University of Science and Technology, Pohang, Korea, Republic of, kblee@postech.ac.kr, Feifeng Zheng, Michael L. Pinedo This work considers online over-list scheduling of ordered flow shops with the makespan as objective. We focus on ordered flow shops, in particular proportionate flow shops with different speeds and proportionate flow shops with different setup times. We derive several results on the worst case performance of the Greedy Algorithm in the online setting. 2 - Subcontracting Operations with Production Costs George Vairaktarakis, Case Western Reserve University, Dept of OR and OM, 10900 Euclid Avenue, Cleveland, OH, 44106-7235, United States, gxv5@case.edu, Ke Fu, Vernon Hsu We consider multiple manufacturers subcontracting part of their workload at a third party (3P) production facility with the rest of the work processed in-house. Production costs are customer-specific, both at their own facility as well as at 3P. We explore structural properties of optimal production plans and in propose fast polynomial time algorithms for several cases of the problem. SB45 SB46

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