2016 INFORMS Annual Meeting Program

MA36

INFORMS Nashville – 2016

MA36 205B-MCC Emerging Issues in Supply Chain General Session Chair: Hyun-Soo Ahn”, University of Michigan, Ann Arbor, MI, United States, hsahn@umich.edu Co-Chair: Hakjin Chung, University of Michigan, 701 Tappan Avenue, Ann Arbor, MI, 48103, United States, hakjin@umich.edu 1 - On Multi-Attempt Approximation Of Choice Model And Its Application To Assortment Optimization Hakjin Chung, University of Michigan, hakjin@umich.edu It is known that any random-utility based choice model can be approximated to any degree of accuracy by a mixture of logits. We consider the problem of approximating an arbitrary mixture of logits with a series expansion. The degree of the expansion can be interpreted as the number of attempts that a customer is willing to make before leaving the system because his preferred product is not available. There are at least two benefits of using this approximation: the optimization problem becomes tractable and its parameters can be estimated Companies continuously release new generations of products with new features to generate revenue and enlarge market share, especially in auto and software industry where customers are willing to pay for technology updates. One of the most widely adopted release strategy is a non-stationary mid-cycle strategy, where minor improvements follow a major improvement. Although people has been looking into the decisions in product release management, most of the works focus on trade-offs that do not lead to such non-stationary strategy. In this paper, we identify the main drivers to the non-stationary mid-cycle strategy and show the situations where such policy is optimal. 3 - Flexibility Design Of Unbalanced Supply Chains Via Extended Probabilistic Expanders We study the design of flexible supply chains by finding sparse structures that perform almost as well as the fully flexible structure in unbalanced and symmetrical systems. We propose a class of sparse structures called extended probabilistic expanders, and show that our structures perform well in the expectation sense. We also present an efficient randomized algorithm to construct extended probabilistic expanders. We prove that for a mildly unbalanced system, our structure is the asymptotically sparsest design. Numerical results show that our design has good performance compared with varieties of known well- performing structures. 4 - Rationale For Supply Partnership With Downstream Rival: Information Asymmetry And Dual Sourcing using linear regression. We derive some bounds. 2 - Non-stationary Product Release Pattern Lai Wei, University of Michigan, laiwi@umich.edu Stefanus Jasin, Roman Kapuscinski Hao Shen, Tsinghua University, Beijing, China, chenhao14@mails.tsinghua.edu.cn, Yong Liang, Zuo-Jun Max Shen We consider the opportunities of horizontal cooperation at the component supply level between two firms that are rivals at the end-product market. We consider a two-echelon supply chain in which a vertically integrated (VI) firm sells a component to a component outsourcing (CO) firm that has private demand information. The VI firm has its own brand which competes with the CO firm’s product. Under this circumstance, we characterize firms’ sourcing and pricing decisions. We offer insights for supply partnership in horizontal outsourcing cases, with an emphasis on the complementary role of information asymmetry and dual sourcing. Seung Hwan Jung, Washingtn University in St. Louis, St. Louis, MO, United States, seunghwan.jung@wustl.edu

3 - Digital And Physical Team Interaction: How Team Size And Stability Determine Hospitalist Productivity Jan A Van Mieghem, Northwestern University, vanmieghem@northwestern.edu, Itai Gurvich, Lu Wang, Nicholas D Soulakis We present and empirically test a team evolution model of how team size and team stability determine the productivity of a focal member who acts as an information hub. In our healthcare field study, the focal member is a hospitalist that coordinates patient care among an extensive care team that comprises the patient’s digital and the hospitalist’s physical team. The physical team consists of care providers who interact directly (via phone, text, or face-to-face) with the hospitalist regarding the patient and whose activities we captured using a time and motion study. The digital team consists of providers that input information to A market for kidney exchange has grown in recent years. Kidney exchange allows patient-donor incompatible pairs to swap donors. The number of transplants from kidney exchanges has grown to be 10% of live kidney donations in the U.S., but growth has stagnated in the last few years. Focusing on the U.S. market, we use administrative records to document that: (1) the market is fragmented across many competing exchange programs, (2) participants in the largest exchange program are adversely selected. (3) smaller exchange programs conduct inefficient exchanges. We propose a supply and demand model to explain how these outcomes can arise as equilibrium behavior, due to the social and private incentives of hospitals being misaligned. We use the model and data to develop simple and efficient alternative mechanisms. MA35 205A-MCC Breakthroughs in Teaching Operations Sponsored: Manufacturing & Service Oper Mgmt, Service Operations Sponsored Session Chair: Ryan Buell, Harvard Business School, Soldiers Field Road, I will be discussing the use of technology to manage formative assessment before, during and after class, and improve learning in settings that encourage learning through discovery (case studies, exercises, etc). Specific attention will be given to teaching topics in operations management. 2 - Innovations In Teaching Operations Management At UCLA Guillaume Roels, Anderson School of Management, UCLA, guillaume.roels@anderson.ucla.edu In this presentation, I will review some recent innovations we have introduced at UCLA to make Operations & Technology Management one of the most popular courses in the core at UCLA. Some of these innovations are (i) striving to make the content more relevant to students, based on their job aspirations, (ii) structuring the class to deliver the best experience, and (iii) fostering student engagement. 3 - Architecting New Business Models (in the classroom) Karan Girotra, INSEAD, karan.girotra@insead.edu I will present a short summary of how we have redesigned MBA-level core and elective classes around the study of disruptive business models. These courses use traditional operations management tools to analyze and architect new business models. Pedagogically, we employ an experiential workshop format-participants identify and refine real-world disruptive business models. 4 - IDEO: Human-centered Service Design – Multimedia-enhanced Teaching And Learning Ryan Buell, Harvard Business School, rbuell@hbs.edu As technology matures, so does the demand for dynamic, media-rich educational content. “IDEO: Human-Centered Service Design” is a multimedia case study that focuses on the design thinking process at IDEO, one of the world’s leading design firms. The case follows a team of IDEO designers as they reinvent the movie- going experience for the emerging middle class in Peru. During this session, I will demo the case, which can be successfully taught to undergraduates, MBA students, and executives. I will also discuss the lessons my colleagues and I have learned through teaching it, about how multimedia can enhance (or unwittingly detract from) the teaching and learning experience. the patient’s Electronic Health Record (EHR). 4 - Market Failure in Kidney Exchange Itai Ashlagi, Stanford University, Stanford, CA, iashlagi@stanford.edu Boston, MA, 02163, United States, rbuell@hbs.edu 1 - The Use Of Technology To Improve Engagement Through Accountability Gad Allon, Wharton School, Philadelphia, PA, 19010, United States, gadallon@wharton.upenn.edu

133