Informs 2015

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INFORMS Philadelphia – 2015
54
SA48
2 - The Impact of Online Reviews on Demand for Outpatient Care:
An Empirical Study
Yuqian Xu, NYU Stern School of Business, 44 West 4th Street,
New York, NY, 10002, United States of America,
, Anindya Ghose, Mor Armony
New platforms for online patient reviews and appointment scheduling provide an
unprecedented opportunity to examine the relationship between patient reported
satisfaction and demand for outpatient care. We study data from a leading online
appointment booking site and use structural estimation and data mining to
determine the influence of patient reviews on physician demand. We pay special
attention to operational factors in patient care such as service time, waiting time
and ease of appointment.
3 - Process Information in Healthcare Systems: Applications to Delay
Estimations and Management
Galit Yom-tov, Technion, IE&M Faculty, Technion, Haifa, Israel,
, Chen Shapira, Sarah Kadish, Shoshi
Levavi, Avi Mandelbaum, Nitzan Carmeli, Arik Senderovich,
Craig Bunnell
Extracting process information data for healthcare services is a challenge due to
the combination of multiple non-integrated IT systems. In this talk we consider
an (open traditional) emergency department and an (appointment-driven)
outpatient hospital. We discuss operational benefits of information processing
efforts and the theoretical challenges they present. We then focus on the
evolution of delays through these service networks, and the use of process (and
RTLS) data to estimate delays.
4 - Optimal Emergency Department Wait Time Prediction
Sara Kwasnick, Stanford Graduate School of Business,
655 Knight Way, Stanford, United States of America,
Erica Plambeck, Mohsen Bayati
We implement a real-time wait time prediction system at a partner hospital, and
explore how the accuracy and format of wait time estimates affects patient
behavior. In particular, we find that accurate provision of wait time information
appears to improve satisfaction and decrease the rate at which patients leave
without being seen. We propose a new wait time prediction objective based on
these results.
SA48
48-Room 105A, CC
Sustainable Operations Management
and the Environment
Sponsor: Manufacturing & Service Oper Mgmt/Sustainable
Operations
Sponsored Session
Chair: Michael Lim, University of Illinois, 1206 S. 6th street,
Champaign, Il, 61822, United States of America,
Co-Chair: Nicholas Petruzzi, The Pennsylvania State University, 210
Business Building, University Park, PA, 16802, United States of
America,
1 - On the Formation of Farmer Producer Organizations in
Developing Economies
Qiao-Chu He, PhD Candidate, University of California, Berkeley,
1117 Etcheverry Hall, Berkeley, United States of America,
Ying-ju Chen, Zuo-jun Max Shen
We study the incentives for small and marginal farmers in developing economies
to form farmer producer organizations (FPOs). We shall focus on the FPOs’
institutionalized efforts in linking small farmers by integrating market
information. By a stylized Cournot competition model endowed with endogenous
information acquisition and sharing decisions, we offer insights on the
governments or NGOs’ dual roles in providing market information as well as
mobilizing farmers to build FPOs.
2 - The State of Scope 3 Carbon Emissions Reporting
Christian Blanco,
Charles Corbett, Felipe Caro
We compare upstream supply chain carbon emissions (scope 3) reported to CDP
to estimates from Economic Input-output Life Cycle Assessment (EIOLCA)
models. We find that several opportunities remain in measuring and reporting
upstream carbon emissions reported to CDP relative to EIOLCA estimates.
3 - Design Implications of Extended Producer Responsibility:
Durable or Recyclable Products?
Ximin (Natalie) Huang, Scheller College of Business, Georgia
Institute of Technology, 800 West Peachtree, NW Atlanta, GA,
United States of America, ,
Beril Toktay, Atalay Atasu
We consider a monopolist who has two product design options to manage the
end-of-life costs/revenues associated with its products: making products more
durable or recyclable. We explore how the recyclability and durability choices are
affected by the requirements of take-back legislation.
4 - The Impact of Ecolabeling on the Green Product Line
Karthik Murali, Michael Lim,
Nicholas Petruzzi
The use of ecolabels allows firms to convey credible information about
environmental attributes in their products to consumers. In a competitive setting,
we study the role of a firm’s credibility and certification from external agencies
with differing objectives on a firm’s ecolabeling choices and ensuing consequences
from a triple bottom line perspective using game-theoretic models.
SA49
49-Room 105B, CC
Frontiers of Supply Chain Research
Sponsor: Manufacturing & Service Oper Mgmt/Supply Chain
Sponsored Session
Chair: Karen Zheng, MIT, 77 Massachusetts Avenue, Cambridge, MA,
02139, United States of America,
1 - Impact of Technology Adoption on Product Assortment Planning
Duo Shi, Washington University in St. Louis, St. Louis, United
States of America, , Fuqiang Zhang, Lingxiu Dong
This paper studies the impact of technology adoption on firms’ product
assortment planning. Consider two types of production technologies, dedicated
technology and flexible technology. We aim to address the following questions
that may arise when the firm contemplates the adoption of the flexible
technology: What is the optimal product assortment under different technology
choices? How does the adoption of flexible technology affect the firm’s assortment
decision?
2 - Omnichannel Retail Operations
Fei Gao, The Wharton School, University of Pennsylvania, 3730
Walnut Street, 500 Jon M. Huntsman Hall, Philadelphia, United
States of America, , Xuanming Su
Omnichannel consumers strategically make use of online and offline channels to
gather information and purchase products. We study different omnichannel
information strategies and their profit implications for firms.
3 - Quality in Supply Chain Encroachment
Xiaoyang Long, PhD Student, Hong Kong University of Science
and Technology, Hong Kong - PRC,
Albert Ha, Javad Nasiry
We study a supply chain with manufacturer encroachment in which product
quality is endogenous and customers have heterogeneous preferences for quality.
We find that encroachment always makes the retailer worse-off. In addition, we
show that a manufacturer offering differentiated products through two channels
prefers to sell its high-quality product directly. Contrary to conventional wisdom,
quality differentiation does not always benefit either manufacturer or retailer.
4 - Measuring the Bullwhip Effect with Material Flow Data:
Biases and Remedies
Wei Luo, IESE Business School, Av. Pearson 21, Barcelona, Spain,
Li Chen, Kevin Shang
This paper focuses on understanding the bullwhip measurement and providing
methods to infer demand and order variance from available material flow data.
We derive conditions under which estimation bias occurs and characterize the
driving factors. We also propose a debiasing method that helps the practitioners
and empirical researchers to further improve their estimation and assessment of
the magnitude of the bullwhip effect.