📁 统计
As there's no central point on Usenet, it is impossible to provide canonical statistics. However, having numbers such as the activity of authors, number of messages, amount of data posted for a given hierarchy or even Usenet as a whole from various points and comparing them usually gives a good idea on what's happening across Usenet. The fact that several well-known news server applications already generate such data for maintenance purposes and their ability to display them graphically in HMTL files makes the task even more easier.
条目 (4+)
Geometric Packing Problems
http://www.york.cuny.edu/~malk/tidbits/tidbit-geometric-packing.html