Recent content by michaelp7

  1. M

    Mathematica Mathematica Slows Down with Repeated Evaluation

    Update-- I think the problem is that I need to close all these input streams. This post seems to address the same issue: http://groups.google.com/group/comp.soft-sys.math.mathematica/browse_thread/thread/5dc2bf7e4793418d?pli=1 I get some improvements when I close the streams in a modified...
  2. M

    Mathematica Mathematica Slows Down with Repeated Evaluation

    I'm trying to analyze a fairly large (order 10^3) collection of PDB files to look for cation-pi interactions for a class. This requires me to parse each PDB file into a table which gives the position of each atom in the file. To do this, I've written the following code...
  3. M

    Undergrad Physics: College Choices for Illinois Student

    I'm a physics major at UChicago. I've been generally satisfied with the department: It's got some great lecturers (Stuart Gazes, Henry Frisch, Juan Collar...), and all the faculty I've met have been friendly and generally helpful. That said, there's a fairly hefty lab component (including a...
  4. M

    Brass Instruments: Why Bells Allow Efficient Energy Transfer

    Wow, thanks for all the replies. That definitely helps.
  5. M

    Brass Instruments: Why Bells Allow Efficient Energy Transfer

    Hi everyone, I'm working on a presentation for a physics class, and I've run into some difficulty. Our group is trying to explain why the bells on brass instruments allow more efficient energy transfer into the environment. I've tried a number of sources, including the book by Barry Parker...
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