Center for Computational Astrophysics (CfCA) is a branch of National astronomical observatory of Japan (NAOJ) and provides computational resources for an astrophysicist. To use the resources, you have to submit a scientific proposal to CfCA. The application form for the submission is available from here.
This Blackboard beamer theme and template was created by Kazuki Maeda <email@example.com> for Japanese presentations, but can be used for English (or other European languages) presentations as well. It has been modified to work with XeLaTeX.
p/s: The blackboard background was drawn with TikZ; the code is also included in the template.