Informs 2015

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INFORMS Philadelphia – 2015
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SA09
SA09
09-Room 309, Marriott
Global Value Chains and New
Organizational Architectures
Sponsor: Technology, Innovation Management & Entrepreneurship
Sponsored Session
Chair: Saikat Chaudhuri, The Wharton School, University of
Pennsylvania, 2000 Steinberg Hall-Dietrich Hall, 3620 Locust Walk,
Philadelphia, PA, 19104, United States of America,
1 - Collaboration Between Specialist Physicians in Multiple Countries
Enabled by Information Technology
Ravi Aron, Johns Hopkins University, 100, International Drive,
Room 1331, Baltimore, MD, 21202, United States of America,
, Praveen Pathak
Medical Tourism refers to patients that travel abroad for surgery. This involves
collaboration between the doctor in the patient’s home country that provides
ongoing care and the specialist surgeon and hospital offshore that provides the
surgical services. We look at how technology plays a role in enabling collaboration
between physicians internationally. We disaggregate the different elements of IT
and their impact on clinical outcomes and patient satisfaction levels.
2 - Operationalizing Enterprise Architecture and Evaluating
Enterprise Flexibility
Alan MacCormack, Harvard Business School, Soldiers Field,
Boston, MA, 02163, United States of America,
We develop a network-based methodology for analyzing a firm’s enterprise
architecture. We demonstrate the application of this method to the analysis of
enterprise IT flexibility, using data from a large pharmaceutical firm. We show
that measures of architecture derived from our methodology predict the cost of
change for software applications within the firm. In particular, applications that
are tightly coupled to other system components cost significantly more to change.
3 - The Voice of Ideas: Understanding Impact of Diverse Modes of
Open Innovation
Natalia Levina, Stern School of Business, New York University,
44 W 4th Street,, KMEC 8-78, New York, NY, United States of
America, , Emmanouil Gkeredakis,
Anne-laure Fayard
Organizations are increasingly engaging in open innovation by hiring consultants
and using crowdsourcing platforms in the hopes of solving their long-standing
R&D problems. Yet, the impact of these diverse modes of open innovation on
organizations is not well understood. The talk builds on an in-depth field study of
such engagements and argues that diverse modes of sourcing ideas have very
different potential for enabling organizations to learn new perspectives on their
long-standing problems.
4 - Global Sourcing of Key Resources: Emerging-market Firms’
Acquisitions of Developed-Market Companies
Saikat Chaudhuri, The Wharton School, University of
Pennsylvania, 2000 Steinberg Hall-Dietrich Hall, 3620 Locust
Walk, Philadelphia, PA, 19104, United States of America,
Emerging-market firms are increasingly acquiring developed-market companies
to obtain high-value technology and market resources, challenging traditional
paradigms. We offer a perspective that provides a more balanced focus on the role
of both firm and location specific resources in the value creation of these
acquisitions. Applying our conditional approach, we develop testable propositions
on the distinct antecedents, processes, and outcomes of such acquisitions, as a
basis for future work.
SA10
10-Room 310, Marriott
Mobile and Location-Based Services
Sponsor: E-Business
Sponsored Session
Chair: Lei Wang, Assistant Professor, Penn State University,
440 Business Building, University Park, PA, 16802,
United States of America,
1 - The Positive Spillover Effect of Mobile Social Games on
App Literacy
Sang-Pil Han, Assitant Professor, Arizona State University, BA
301D, Tempe, AZ, 85287, United States of America,
Wonseok Oh, Sungho Park, Mihyun Lee
Despite the massive influx of mobile apps into the market, not everyone is
“mobile literate.” This study uses an individual level mobile app usage dataset to
examine the potential of mobile platform-based social games as training tools for
mobile literacy. Results reveal that high social game app consumption increases
the duration of app usage and the number of apps used. This positive spillover
effect is more pronounced among users with limited mobile experiences or are in
their 50s or older.
2 - Trajectory-based Mobile Advertising
Beibei Li, Assistant Professor, Carnegie Mellon University, 5000
Forbes Ave, Pittsburgh, PA, 15213, United States of America,
, Siyuan Liu, Anindya Ghose
We propose a new mobile ad strategy that leverages full information on
consumers’ offline moving trajectories. To examine the effectiveness of this new
mobile ad strategy, we design a large-scale randomized field experiment in a large
shopping mall in Asia. We found that mobile trajectory-based ads can lead to the
highest redemption probability and highest satisfaction rate from customers.
3 - Learning from your Friends’ Check-Ins: An Empirical Study of
Location-Based Social Networks
Liangfei Qiu, Assistant Professor, University of Florida,
Department of ISOM, Gainesville, FL, United States of America,
, Zhan Shi, Andrew Whinston
Recently, mobile applications have offered users the option to share their location
information with friends. Using data from a major location-based social
networking app in China, we estimate a structural model of restaurant discovery
and observational learning and conduct counterfactual analysis on seeding
strategies. The unique feature of repeated customer visits in the data allows us to
separate observational learning from non-informational confounding
mechanisms.
4 - How Does the Taxi-hailing App Improve Driver’s Efficiency?
An Empirical Evidence from China’s “UBER”
Kaiquan Xu, Nanjing University, 22#, Hankou Road, Nanjing,
China,
With the Uber’s rapid development, there is no any study to assess the taxi-
hailing app’s advantages and disadvantages. Using the unique dataset from the
large taxi-hailing app company in China, this study finds some interesting results.
Drivers can earn more 1.249 RMB when the order is acquired from the app. Our
study shows that the taxi-hailing app increases the time to pick up customers.
This is the first study of using the driver-level objective data to examine the taxi-
hailing app’s impact.
SA11
11-Franklin 1, Marriott
Polynomial and Nonconvex Optimization
Sponsor: Optimization/Integer and Discrete Optimization
Sponsored Session
Chair: Daniel Bienstock, Columbia University, 500 W 120th St, New
York, NY, 10027, United States of America,
1 - Lifted Formulations for Optimization Problems with Small Width
Daniel Bienstock, Columbia University, 500 W 120th St, New
York, NY, 10027, United States of America,
Gonzalo Muñoz
We present polynomial-size lifted formulations for optimization problems where
the intersection matrix of the constraints has bounded tree-width. For a binary
problem with n variables and tree-width w, our formulation has 2wn constraints
and variables, and is exact. We used this construction to obtain polynomial-size
formulations for mixed-integer polynomial optimization problems of bounded
width, which attain desired feasibility and optimality guarantees.
2 - Algebraic Decomposition of Polynomials by Linear and Second
Order Cone Programming
Amir Ali Ahmadi, Princeton University, Department of ORFE,
Princeton University, Sherrerd Hall, Charlton Street, Princeton,
NJ, 08544, United States of America,
We present several LP/SOCP based algebraic decomposition algorithms for
multivariate polynomials that can be used to solve polynomial optimization
problems.