Welcome to the Department of Mathematics
What's Happening This Week In Mathematics....
Tuesday September 30 1:30 - 2:30
Discrete Mathematics Seminar
Title: The structure of Costas Arrays
Speaker: Jonathan Jedwab, SFU
Regularly updated Discrete Math Seminar information can be found HERE.
Event: 56th annual meeting of the Canadian Operational Research Society (CORS) in Ottawa.
As in the past two years, we encouraged the undergraduates in Math 402W Operations Research Clinic to submit their projects to the CORS undergraduate student paper competition. And, once again, they won both prizes. This year, all 3 projects submitted were chosen as finalists, and presented their work at the meeting. (The fourth finalist was from the University of Alberta; nine entries were received.) Congratulations go to:
Kishley Bhalla, Craig Mathews, W. Brett Robinson and Katie Sclater "Selecting Optimal Tolling Levels: A Case Study for the Fraser River in the Greater Vancouver Area"
Nicole Mo, Alborz Namazi, Joyce Tai and Eric Yuen "Optimal Locations of Telecommunication Equipment: A Case Study for the City of Richmond, British Columbia, Canada"
Kingsley Cheang, Feiqi He, Sarah Lin and Ashlie Neufelt "The Community Mailbox Location-Routing Problem"
Additionally, Second Prize in the CORS Practice Competition went to Daniel Karapetyan (SFU Math postdoc 2011-13) and Abraham Punnen, for their paper "Operational Research Models and Algorithms for Fleet Size Planning and Schedule Optimisation for the British Columbia Ferry Services Inc." Finalists for the practice competition included teams from the University of Toronto and IBM, first prize went to UOIT.
From the successful PhD defense of Sophie Burrill July 18, 2014
Pictured: Petr Lisonek, Cedric Chauve, Sophie Burrill, Marni Mishna, Lily Yen, Frank Ruskey and...
SFU summer camp encourages post-secondary education for indigenous students July 11, 2014
An educational summer camp now offered at SFU is encouraging indigenous high school students to...
SFU launches inaugural Aboriginal math/english camp July 08, 2014
While many of their peers are enjoying what is fast becoming...
Researchers put math to work for BC Ferries July 03, 2014
Scientists & Dessert Fans Come Together for Pi Day! March 13, 2014
Lovers of pastry and irrational numbers gathered at Simon Fraser University’s Burnaby campus Friday...
Vancouver Celebrates Pi Day with Experiments and Pie! March 14, 2014
Aphrodite's Cafe and Pie Shop brought in extra staff and extended their hours to celebrate Pi...
Math Catcher June 14, 2013
Veselin Jungic continues his work with his program: Math Catcher: Mathematics through Aboriginal...
Natalia Kouzniak: Triumphing February 28, 2013
With mid-terms over, Natalia Kouzniak is again holding “crying sessions” in her office...
Pancakes with a Side of Math March 06, 2013
For many of us, maple syrup is an essential part of breakfast—a staple accompaniment to pancakes...
PIMS Education Prize March 28, 2013
This prize, awarded by the Pacific Institute for the Mathematical Sciences, recognizes individuals...
SSHRC Insight Award! June 11, 2013
Congratulations to Tom Archibald who has received a SSHRC Insight Award Click here to learn more
Bob Russell: Influential Math Prof May 28, 2013
It’s not often the retirement of a mathematics professor has implications outside the math...
University Course Selection Problem May 27, 2013
Congratulations to Bo Chen, Luheng Wang, Wenjiao Chen, and Xiao Luo for their paper “The University...
Case Study for Food Truck May 27, 2013
Congratulations to Benny Wai, Alex Liu, and Lawrence Huen for their paper “Selecting Optimal...
Undergrad Operation Research June 05, 2013
Special congratulations to our undergraduate operations research students, who won both first and...
Spreading Food Trucks June 05, 2013
Research by Simon Fraser University mathematics students studying the conflict between downtown...
CSC Seminar - Jakob Jorgensen
2:30 PM - 3:30 PM
October 3, 2014CSC Weekly Seminar Friday, October 3, 2014 TASC-2, Rm 8500 2:30 pm Speaker: Jakob Jorgensen Title: Sparsity-regularized image reconstruction in x-ray computed tomography Abstract: X-ray computed tomography (CT) is a widely used technique for non-invasive imaging, with the medical CT-scanner as the perhaps most well-known example. The underlying mathematical problem of reconstructing an image from the measured data is solved in modern scanners by methods involving analytic inversion of the Radon transform. Motivated by reducing the patient's x-ray dose as well as reducing scanning time for example in materials science applications, there is a large interest in reconstruction from reduced data, which is inherently difficult for the current methods. In recent years, a new class of methods based on incorprating prior knowledge into a variational formulation, has been studied intensely, in particular methods enforcing various forms of sparsity in the reconstructed image. A large number of studies demonstrate the potential for improved reconstruction from reduced data, however a fundamental understanding of conditions under which these methods can be expected to work is lacking. In this talk I will describe some of my recent work in this area. In particular, I will present empirical evidence of an average-case relation between image sparsity and the level of CT sampling sufficient for accurate reconstruction, and I will discuss conditions for ensuring uniqueness of the reconstructed image.
October 6-7, 2014No Description