Mathematica Seminars in Istanbul, Ankara

Register now for the Turkey Mathematica Seminars this May:

* Tuesday, May 15: Founders Hall, Koç University, Istanbul,
Turkey
* Thursday, May 17: Opal Hall, Dedeman Ankara hotel, Ankara,
Turkey

This is a unique opportunity to experience the advancements of
Mathematica 8 with expert-led talks.

There is no cost to attend, but space is limited and registration
is required. To secure your place, please register at:
http://url.wolfram.com/YJNAk8/

For more information, visit:
http://url.wolfram.com/18ratCo/

Installing/Running mathematical petri net editor PIPE on mac os x

My current version: 10.6.8 of Mac OS X

First download pipe from http://sourceforge.net/projects/pipe2/?_test=b .

Keep launch.sh file for mac os x.  .dat is for Windows.

1. Open terminal and locate your launch.sh file using 'cd' command (as you see in 1) then enter to run
2. Make file launch.sh active with command 'chmod +x launch.sh' then enter to run (as you see in 2) 
3. Finally type './launch.sh' and enter to run the PIPE petri nets editor.  

Here it is: