Informs Annual Meeting 2017

WC21

INFORMS Houston – 2017

WC21

3 - Analyzing the Efficiency and Interactions of Buffer Types for Robust Resource Allocations in Resource-constrained Multi-project Scheduling Christian Fabig, Research Assistant, Technische Universität Dresden, Münchner Platz 3, Dresden, 01187, Germany, christian.fabig@tu-dresden.de, Thorsten Schmidt We study the efficiency of buffer types for robust resource allocation under uncertainty. The schedule objective is to minimize the realized Average Project Delay (APD) in a worst-case scenario. We describe which buffer types are proposed in literature, how those buffers are allocated to a multi-project schedule, and how they can be combined efficiently. Therefore, the performance of buffer combinations and sizes with respect to the realized APD is analyzed using experiments on MPSPLib problem instances. Findings reveal that due to buffer interactions there exist efficient combinations, yielding significant performance gains compared to deterministic and single-buffer approaches. 4 - Assembly Line Sequencing using Scaled Process Times Faisal Alfaiz, Graduate Research Assistant, Oregon State University, Corvallis, OR, United States, alfaizf@oregonstate.edu, Hector Vergara, David S. Kim Job sequencing on synchronous serial assembly lines is examined when job processing times are not available and are replaced by a ranking on a fixed scale. The scaled job process times are determined by engineers, managers, and operating personnel. Properties of the scaled process times and their effect on throughput and work overload when job sequencing algorithms are utilized is examined. 342B General Contributed Session Chair: Sundaravalli Narayanaswami, Indian Institute of Management- Ahmedabad, Ahmedabad, India, sundaravallin@iima.ac.in 1 - A Study on the Effects of Supplier Management System on Buyer Firm’s Outsourcing Performance : Moderating Effects of Switching Cost Mi Yeon Lee, Korea University Business School, 408 LG-POSCO.building, Korea University, Anam-ro, Seongbuk-gu, Seoul, 02804, Korea, Republic of, esther2761@naver.com, Jung Dawoon, Park Myungsub This paper applied multi regression analysis, using 522 data collection in 2013 from Korea Productivity Research Center in general equipments, automotive, shipbuilding, and telecom equipments industries. Using the data, this study intends to empirically discover the effect of the types of Supplier Management System (support system and evaluation system) on the buying firm’s performance under different levels of Switching Cost. The results of this study will provide key theoretical and practical insights on the relationship between supplier management system and success of outsourcing. 2 - Selection of Best Online Job Portal in the United States using Analytical Hierarchy Process Xiaojun (Gene) Shan, University of Houston-Clear Lake, Houston, TX, United States, shan@uhcl.edu, Nikhitha Matta Job seekers often need focus on one job portal among many alternatives to increase efficiency. This paper develops a framework to select the best online job portal from the perspective of job seekers with analytical hierarchy process. This paper is mainly for the job seekers in the domain of science, engineering, health and management although the framework could be adapted to other types of job seekers. The criteria are quality and performance, efficient search engine, relevant job description, privacy, ease of applying and appropriate features. The paper used Web-HIPRE to apply the framework and found that Indeed is the best one compared to Dice, Zip recruiter, Linkedin, and Glass door. 3 - Meals on Tracks: the Indian Railway Catering Services Sundaravalli Narayanaswami, Indian Institute of Management Ahmedabad, Wing 15 B, Indian Institute of Management, Vastrapur, Ahmedabad, 380015, India, sundaravallin@iima.ac.in Indian Railways (IR) is the largest state owned and operated transport services in the World with 7,137 stations, route length of 66,030 kms. and total track of 117,996 kms. The number of passengers carried everyday is 23 Millions with passenger earnings of INR 42190 crores. In this talk, we discuss the scope, social, managerial and administrative challenges of IR catering services operations. WC20

342C Sustainability Contributed Session Chair: Maneesh Reddy Ajjuguttu, Clemson University, Clemson, SC, United States, majjugu@g.clemson.edu 1 - Knowledge Sharing and Learning Among Smallholders in Developing Economies: Incentives and Reward Mechanism Shihong Xiao, HKUST, Hong Kong, Hong Kong, sxiaoab@connect.ust.hk, Ying-Ju Chen, Christopher S. Tang In developing economies, smallholders use their knowledge and effort to control their output of high quality crop. To improve farmers’ productivity, various advocating knowledge sharing and learning platforms are advocated so that farmers can share with and learn from each other various farming techniques. Putting altruism aside, we examine the economic implications for heterogeneous farmers to share their private farming knowledge voluntarily with other farmers under implicit competition. By analyzing a multi-person sequential game, we provide a plausible reason to explain why knowledge sharing can be beneficial even when each farmer’s profit depends on the total output. 2 - Development and Evaluation of Product Architecture for Remanufacturing and Product Service System Synergy Johnson Adebayo Fadeyi, Graduate Teaching Assistant, Wayne State University, 690 Martin Luther King Jr. Blvd, Apt 2005, Detroit, MI, 48201, United States, kontaktjohnson@gmail.com, Johnson Adebayo Fadeyi, Leslie Monplaisir Currently, about 80% of manufactured products end as wastes. Product service system (PSS) and remanufacturing are concepts that remedy this problem. In order to enhance the criteria that are essential for successful PSS and remanufacturing, an optimization model is developed to identify viable product architecture from several product alternatives. The implementation yields multiple optimal product configurations. Consequently, multi-criteria decision- making technique is applied, and the sensitivity analyses provide comparative advantages of all viable product configurations. The study provides modular product architecture decision guide to the original equipment manufacturers. 3 - Comparative Analysis of Economic and Environmental Impacts of Online and Conventional Retailing Arda Yenipazarli, Associate Professor of Operations Management, Georgia Southern University, 2224 College Of Business Administration, Department of Logistics & Supply Chain Mgnt, Online shopping is growing fast and claims are made about its positive environmental impact relative to traditional shopping. We study competing retailers that can operate dual channels (bricks and clicks), and examine the implications of the additional Internet outlet for their channel and pricing decisions, and the environment. 4 - Optimal Adoption Strategies of Electric Vehicles in Commercial Fleets Osman Alp, University of Calgary, Haskayne School of Business, 2500 University Drive, Scurfield Hall 120, Calgary, AB, T2N1N4, Canada, osman.alp@ucalgary.ca, Titi Sari, Tarkan Tan, Maximiliano Udenio In this talk, we analyze optimal electric vehicle adoption strategies in commercial delivery and distribution fleets to reduce carbon footprint of supply chain operations. We develop a model and solution approach to optimize timing and scale of investments in vehicles and charging infrastructure by explicitly considering potential advancements in charging technology, prospective savings in operating costs and carbon emissions, desired service levels, and long-term sustainability targets. We analyze and compare alternative scenarios under plug- in charging model and battery swap model separately. 5 - A Study on Firms’ Response to the Environmental Regulations of the Government Tae Hyung Kim, KAIST, 85, Hoegi-ro, Seoul, 02455, Korea, Republic of, kth8907@kaist.ac.kr, Bowon Kim Effective environmental regulation is necessary for both the social and economic aspects, since it provides the foundation for sustainable environment. However, ineffective or excessive regulation often leads to side effects such as corporate fraud or moral hazard of corporate, which brings significant loss in society. Therefore, in this paper, we try to analyze the cause and effect of this phenomenon by using system dynamics simulation method. Based on the simulation result, we will investigate the ways to complement existing environmental regulations. Statesboro, GA, 30460, United States, ayenipazarli@georgiasouthern.edu

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