AJ Ribeiro successfully sat his PhD Qualifying Exam on Tuesday, November 13. AJ has published on the characterization of quiet-time mid-latitude irregularities seen with the new MSI radars and has developed a radar simulator for testing data fitting algorithms. He has also developed many of the on-line analysis tools available at the VT SuperDARN web site.

For a neat demonstration of ACF plotting and fitting, try out his Java-based ACF Applet tool at

http://sd-work2.ece.vt.edu/acfapp/launch.html

Congratulations, AJ!