Events at Physics |
Events on Tuesday, April 28th, 2009
- Chaos & Complex Systems Seminar
- Applications of neural networks in time-series analysis
- Time: 12:05 pm
- Place: 4274 Chamberlin
- Speaker: Adam Maus, UW Department of Physics
- Abstract: Artificial neural networks are mathematical models that emulate biological neural systems. They have been used in classification, pattern recognition, and time-series analysis. In time-series analysis, neural networks can be used for forecasting but also to determine how many and which past values are required to predict the future. Determination of this 'lag space' sheds light on the nature of the dynamics and permits development of minimal models capable of replicating the dynamics. I will highlight applications of neural networks in the real world as models that classify, forecast, and analyze data while emphasizing their use in determining the lag space.
- Astronomy Colloquium
- How Black Holes get their Kicks
- Time: 3:30 pm - 5:00 pm
- Place: 6515 Sterling Hall
- Speaker: Kelley Holley-Bockelman, Vanderbilt University
- Abstract: Finally, computer simulations can merge two black holes in full general relativity -- and the latest results reveal a big surprise: when two black holes merge, the new black hole gets a gravitational wave kick with a velocity as high as 4000 km/s. A kick this fast can send even a supermassive black hole careening out of its home galaxy. How, then, do galaxies - especially low mass ones in the early universe - retain supermassive black holes after they merge? We will explore this and other consequences of kicking black holes in this talk.
- Host: WOWSA