Seminar Schedule for 2008-09
| July | October | January | April |
| August | November | February | May |
| September | December | March | June |
View separate schedule for Open House Nights in Astronomy.
| Date | Speaker | Institution | Title |
September 16, 2008 |
Dr. Larry Downey | Penn State Behrend | Forensics and the JPEG |
| September 23, 2008 3:30 pm 170 Nick |
Dr. Joseph Paullet | Penn State Behrend | A Boundary Value Problem from Fluid Mechanics |
| October 7, 2008 3:30 pm 170 Nick |
Mr. Paul Olson | Penn State Behrend | Suquences of Games |
Forensics and the JPEG
September 16, 2008
We will discuss the mathematics of the JPEG algorithm (format) and its ramifications within the field of Image Forensics. We will view several examples of images with “fraudulent” manipulations and in real time attempt to detect these alterations using some state of the art software. The talk should be accessible to all.
A Boundary Value Problem from Fluid Mechanics
Setpember 23, 2008
In this talk we consider axisymmetric stagnation point flow of one fluid impinging on a disk covered with a second fluid. A similarity reduction is employed to reduce the governing PDEs to a nonlinear ODE boundary value problem. Previous numerical investigations of the problem in the literature indicate the existence of one solution. Here we prove the existence of at least two solutions to the BVP. We also obtain results concerning the possibility of further solutions and present numerical approximations to the solutions. The proofs involved employ techniques from calculus and are accessible to undergraduates.
Tuesday, October 7, 2008
We would like to consider two (combinatorial) games whose rules are easy to learn. The “tree game” consists of climbing (binary) trees while trying to limit your opponent’s moves, and “hackenbush” is a game in which the goal is to take the last possible coin from a set of stacked coins.
Once we have described the games, it is possible to consider infinite sequences of these games by constructions involving established patterns. Since combinatorial games have associated surreal number values, we would also be considering infinite sequences of surreal numbers.
Past work and future efforts by Behrend student researchers will be summarized.