User:Jadrian Miles

I started my PhD in CS at Brown in Fall 2006. I work on data processing, measurement, and model reconstruction from diffusion MRI of the brain.

You can find me elsewhere online:

• CS department page
• Visweb profile
• Other places

There are a number of directories related to me on the CS filesystem, all of which are linked from file:///map/gfx0/users/jadrian

Personal Documents

• /PhD Plan
• /Research Projects
• /Diffusion simulation
• /Streamline clustering
• /Theory Conference Deadlines

Draft pages / notes

• /Plan your PhD
• /Diffusion MRI techniques
• /BB's dollarg
• /Eclipse
• /sandbox
• /setting up a new user

Nifty code snippets

• Generate a random filename from the command line:

  set tmpfile=/tmp/`head -q -c 8 /proc/sys/kernel/random/uuid`

• Convert stdin to lowercase on stdout:

  tr '[A-Z]' '[a-z]'

• Test for host availability in tcsh (for loop demo):

  foreach h ( `cat hostlist` )

  ssh $h uname -n

  end

• Update a directory with stuff that exists in a CVS repository but not in the directory:

  cvs update -d

• Concatenate PDFs (more at the original source)

  gs -q -sPAPERSIZE=letter -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile=out.pdf in1.pdf in2.pdf in3.pdf ...

Miscellaneous notes

• High b sensitizes to short length scale (Assaf & Cohen 1998, 2000).
• The cingulum bundle looks like a long, skinny tube (that wraps around the top and back of the CC) in a gross segmentation, and fibers run along the long axis of this tube for most of this length. Their projections into the GM, though, are actually along the side of the tube, on mid-sagittal gyri. This is a really weird shape when it comes to inferring fiber paths from the bundle shape, so it should be a smoke test for any proposed system.