*****  To join INSNA, visit http://www.sfu.ca/~insna/  *****

The following web-based article talks about a professor's research on using graph theory to split up terrorist networks.  The article discusses how analysts commonly thought in terms of how removing one or more nodes would affect the probability of a network splitting up (I seem to recall some type of index of this type mentioned in Wasserman and Faust's Social Network Analysis).  The article then talks about newer approaches that attempt to incorporate the hierarchical nature of a network into the calculations.  The article can be accessed by clicking on:
http://www.sciencenews.org/20040110/mathtrek.asp .  I've also linked it to my SPIDER webpage, where you can see other recent developments I've identified regarding networks and the spread of culture:  http://www.hs.ttu.edu/hd3317/spider.htm .

**********************************************************
Alan Reifman, Ph. D.,  Associate Professor
Dept of Human Dev't and Family Studies
College of Human Sciences
Texas Tech University
Lubbock, TX 79409-1162
(806) 742-3000
http://www.hs.ttu.edu/hdfs/Faculty/reifman.htm

_____________________________________________________________________
SOCNET is a service of INSNA, the professional association for social
network researchers (http://www.sfu.ca/~insna/). To unsubscribe, send
an email message to [log in to unmask] containing the line
UNSUBSCRIBE SOCNET in the body of the message.