September 2014

CIMS Colloquium-Vanessa Lopez (IBM)-Simulating heat and mass transfer in buildings equipped with sensor networks
Friday, 9/26/2014 11:00 AM-12:00 PM
Stratton Hall, 203
ABSTRACT: We consider the problem of modeling heat and mass transfer in buildings equipped with a network of sensors and a data management system which gathers the sensor data in real time. Such sensor measurements serve as input data for the boundary value problems for systems of partial differential equations comprising the physical models. First, we describe a simplified physics model for simulating air and heat transfer in data centers and show results from a case study indicating that the model produces approximations to temperature distributions which compare favorably with 3D experimental thermal measurements, even when the amount of input information provided by the real-time sensor data is limited. We then consider the problem of simulating humidity along with air flow and heat transfer, specifically in environments where natural convection is dominant. We will discuss modeling tools and techniques that facilitate performing simulations of the physical phenomena at hand and which are suitable for coupling with measurements gathered via sensor networks.
For more information, e-mail ma-chair@wpi.edu.

October 2014

Colloquium-Jianjun Huang (WPI)-Title TBA
Friday, 10/3/2014 11:00 AM-12:00 PM
Stratton Hall, 203
ABSTRACT: TBA
For more information, e-mail ma-chair@wpi.edu.

Colloquium-Boris Rozovsky (Brown University)-Title TBA
Friday, 10/10/2014 11:00 AM-12:00 PM
Stratton Hall, 203
ABSTRACT: TBA
For more information, e-mail ma-chair@wpi.edu.

November 2014

Colloquium-Gwen Spencer (Smith College)-Influence Beyond Exposure: Tackling an Economic Variant of Seeding Viral Spread
Friday, 11/7/2014 11:00 AM-12:00 PM
Stratton Hall, 203
ABSTRACT: The problem of seeding "contagion" in social networks has attracted substantial attention for its connection to viral marketing. Simple information-spread models yield nice mathematical properties that allow theoretical algorithmic traction. This work often points to some form of "exposure" as the best paradigm for designing seed sets. While exposure-based seeding may spread awareness effectively, being aware of a behavior often doesn't result in a decision to adopt it. When environmental economists describe decisions to engage in green behaviors, when sociologists model norm-spread, and when game theorists consider choices to adopt cooperative strategies in repeated-game-play, a common more-complex spread mechanism emerges. What can we learn about how to virally market biking to work, adopting health-related behaviors, and cooperating at an equilibrium that is mutually beneficial?

I'll mention convergence results for this spread mechanism, (daunting) hardness results for the seeding question, and (heartening) computational results from heuristics derived by truncating an exact (inefficient) Integer Program. Compared to exposure-based seeding, the advantage of a seeding paradigm that establishes "critical mass locally" appears largest when the network is highly clustered (as social networks often are).

For more information, e-mail ma-chair@wpi.edu.

Colloquium-Mert Gürbüzbalaban (MIT)-Title TBA
Friday, 11/14/2014 11:00 AM-12:00 PM
Stratton Hall, 203
ABSTRACT: TBA
For more information, e-mail ma-chair@wpi.edu.

December 2014

Colloquium-Jeremy Tyson (UIUC)-Title TBA
Friday, 12/5/2014 11:00 AM-12:00 PM
Stratton Hall, 203
ABSTRACT: TBA
For more information, e-mail ma-chair@wpi.edu.

February 2015

Colloquium-Thaleia Zariphopoulou (UT Austin)-Title TBA
Friday, 2/20/2015 11:00 AM-12:00 PM
Stratton Hall, 203
ABSTRACT: TBA
For more information, e-mail ma-chair@wpi.edu.

April 2015

Colloquium-Alex Iosevich (University of Rochester)-Title TBA
Friday, 4/10/2015 11:00 AM-12:00 PM
Stratton Hall, 203
ABSTRACT: TBA
For more information, e-mail ma-chair@wpi.edu.