Contemporary issues in service and operations management
- The essays in this dissertation are motivated by various contemporary issues in the late 2000s and early 2010s related to the environment, healthcare and natural disasters. Chapter 1 explores the issue of environmental and social disclosures on consumer products. Specifically it studies whether consumer reaction to products differ under voluntary and mandatory disclosures, and whether policy makers should mandate disclosure. The results suggest that contrary to basic intuition, mandatory disclosure policies may lead to sub-optimal environmental and social performance by firms. Chapter 2 is motivated by the increasing number of Emergency Departments (EDs) in the US that publish wait times publicly. This work proposes a novel wait time prediction method that combines queuing theory and statistical learning. Implementation results at San Mateo Medical Center (SMMC) show that this method is 30% more accurate than the current industry standard. Furthermore, post-implementation results of the wait time prediction system at SMMC's ED show that publishing accurate wait times led to a decrease in the number of patients who left without being seen by a physician. Chapter 3 is motivated by the events in the aftermath of the Tohoku earthquake, when many supply chains stopped functioning due to upper tier supplier disruptions. This work studies how a manufacturer should optimally source form its suppliers if it knows that disruption risk originates from the upper tiers of its supply chain. The result shows that if there is significant overlap of suppliers in the upper tiers, the manufacturer should pursue an aggressive strategy of inducing its direct suppliers to dual source. On the other hand, if the degree of overlap is low, the manufacturer should focus on its own dual sourcing and inventory mitigation.
|Type of resource
|electronic; electronic resource; remote
|1 online resource.
|Stanford University, Graduate School of Business.
|Plambeck, Erica L
|Plambeck, Erica L
|Statement of responsibility
|Submitted to the Graduate School of Business.
|Thesis (Ph.D.)--Stanford University, 2015.
- © 2015 by Erjie Ang
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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