The registration site for QR-15 is here:

The registration for the two-day conference is as follows:
$325 for students, $425 after July 20 or onsite.
$375 for non-students, $475 after July 20 or onsite.

The registration includes two days of conference, refreshments, two dinners, and a social event.

28th International Workshop on Qualitative Reasoning
August, 2015
Minneapolis, MN