2016 INFORMS Annual Meeting Program

WB09

INFORMS Nashville – 2016

WB10 103C-MCC Underground Mine Planning Sponsored: Energy, Natural Res & the Environment, Natural

3 - Channel Choice For Closed-loop Supply Chain Under Government Replacement-subsidy Jianan Sun, doctoral Student, Xi’an Jiao Tong University, 28 Xianning Road, Shanxi Province, Xi an, 710049, China, sjn168@stu.xjtu.edu.cn This paper considered government replacement-subsidy policy to examine the channel choice of remanufacturer consisting of a single manufacturer and a single remanufacturer. Based on the replacement-subsidy and carbon emission, we constructed two CLSL channel models which the remanufacturer may cooperate or compete with the manufacturer through different channels. Then, we discussed the impacts of the replacement-subsidy on the channel choice decision of remanufacturer and profits of CLSC system and its members by the method of game theory. At last, the numerical analysis was adopted to emulate the optimal price, optimal quantity and emission quantity of each channel. WB09 103B-MCC Empirical Research on Sustainable Operations Sponsored: Manufacturing & Service Oper Mgmt, Sustainable Operations Sponsored Session Chair: Priyank Arora, Georgia Institute of Technology, 800 W Peachtree St NW, Atlanta, GA, 30308, United States, priyank.arora@scheller.gatech.edu 1 - Responsible Customers Brian Jacobs, Michigan State University, jacobsb@broad.msu.edu, Vinod R Singhal Responsible sourcing is of increasing research interest. But what happens if your customer is not socially responsible? We examine the impact of the 2015 VW diesel emissions scandal on automotive suppliers. 2 - The Role Of Managerial Commitment On The Relationship Between Controversy And Environmental Practice Adoption Rick Hardcopf, University of Minnesota, rhardcopf@gmail.com The adoption of environmental management practices (EMPs) intended to reduce a firm’s environmental footprint has increased steadily over the years. EMPs are also positively related to superior environmental, financial, and operational performance. But while the general drivers of EMP adoption have been evaluated extensively, no empirical research has evaluated whether a negative environmental event, such as an environmental spill or pollution event, impacts a firm’s pattern of EMP adoption. We evaluate this relationship, and the moderating effect of managerial commitment, using a novel secondary dataset derived from 10k filings, sustainability reports, and other public sources. 3 - The Relationship Between Corporate Social Performance, kraude@broad.msu.edu, Sriram Narayanan, Brian W Jacobs We employ DEA-based measures for productivity and corporate social performance to examine their relationship with multiple dimensions of financial performance and risk. We test our hypotheses in a panel that comprises 476 firms in nine US manufacturing industries during the period 1999-2009. 4 - Relationship Between Appointments Of Corporate Sustainability Leaders And Firm Performance Priyank Arora, Georgia Institute of Technology, With an increasing significance of sustainability as a corporate goal, firms have been establishing new positions in their top management teams - positions that we collectively term as Corporate Sustainability Leaders (CSLs). We empirically examine whether and under what conditions does the stock market react to announcements of CSL appointments. While we find that CSL appointments are overall value-neutral, interestingly, we find that under certain conditions, the stock market reaction is significantly more positive. Our findings evidence nuances in the market reactions to the various categories of announcements of CSL appointments considered in our work. Productivity, Financial Performance, And Risk Richard Kraude, Michigan State University, 800 W Peachtree St NW, Atlanta, GA, 30308, United States, priyank.arora@scheller.gatech.edu, Manpreet Singh Hora, Vinod R Singhal, Ravi Subramanian

Resources I Mining Sponsored Session

Chair: Alexandra M Newman, Colorado School of Mines, 1104 Maple Street, Golden, CO, 80401, United States, anewman@mines.edu 1 - Sensitivity Analysis as a Tool For Improving Robustness Of Underground Mine Production Schedule Tacio Vinicius Ferreira Lopes, South Dakota School of Mining and Technology, 501 E Saint Joseph Street, Rapid City, SD, 57701, United States, taciovinicius.ferreiralopes@mines.sdsmt.edu, Andrea Brickey Underground mine production scheduling has long been a manual and time- consuming task performed by mining engineers. Recent research has shown that an integer programming formulation can be used to determine a large-scale underground mine production schedule. We perform sensitivity analysis of an underground mine production schedule model and the results are used in determining a more robust and operationally implementable schedule. 2 - Optimal Support Pillar Placement In An Underground Mine Levente Sipeki, Colorado School of Mines, lsipeki@mymail.mines.edu We determine support pillar placement for a top-down one-stope retreat mining operation to maximize the profit from ore extraction, subject to constrains on pillar stress, hydraulic radius, pillar length-to-width rations, and stope-to-pillar extraction rations depending on level depth. A heuristic produces a pillar placement design that increases the extraction capacity of the mine by (1) shifting the pillars to find the most profitable stopes to extract, (2) allowing less ore to be used as a pillar and (3) reducing the total cost of stope slotting by creating fewer pillars. 3 - Short And Medium-term Scheduling Model For Large Underground Mines Louis-Pierre Campeau, PhD Student, Polytechnique Montreal, 2900 Edouard-Montpetit, Montreal, QC, H3T 1J4, Canada, louis-pierre.campeau@polymtl.ca, Michel Gamache Applications of operations research to short-term underground mine scheduling are very few, mostly because of the complexity and specificity of its constraints. This presentation will discuss the advances made with a model for short- and medium-term scheduling in large underground mines. The results of the model application to real-world and fictional datasets will also be explained. Comment on future work and possibilities in this field will conclude the presentation. 4 - Underground Mine Plan Optimization David Whittle, University of Melbourne, a, Melbourne, Australia, dwhittle1@Student.unimelb.edu.au We present a new approach to the optimization of the design of an underground mine. Our algorithm determines the design and selection of stopes, the network of horizontal development and the selection of levels, in order to maximize undiscounted cashflows. In solving the mine planning problem we have devised a new method to solve the Node-Weighted Geometric Steiner Tree problem, which has potential applications in other fields. WB11 104A-MCC Transportation Network Analysis Sponsored: Optimization, Network Optimization Sponsored Session Chair: Bahar Cavdar, Middle East Technical Univeristy, Atlanta, GA, United States, bcavdar@metu.edu.tr 1 - An Integrated Fleet Management Model Introducing Alternative Fuel Trucks Ilke Bakir, PhD Candidate, Georgia Institute of Technology, Atlanta, GA, United States, ilkebakir@gatech.edu, Alan Erera We generalize a fleet replacement problem in long-haul trucking by considering some infrastructural and operational decisions alongside with fleet replacement decisions. We propose an integrated fleet management model designed to be particularly helpful in situations where new truck types (alternative fuel trucks, as the main focus) are being introduced into existing fleet. To demonstrate the benefits of utilizing this computationally challenging model instead of simpler methods, we present a comparative computational study. Later, to ease the computational burden of solving this problem, we propose a Benders’ decomposition framework.

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