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Posted: **Tue Dec 05, 2006 6:29 pm**

Posted by ""Nancy Bassiouny"" <nancy@mashy.com> Dear All ,

Please I need some help on this topic. Did anyone come across a system dynamics model designed to serve the portal business . By portals I mean like yahoo , google ...etc . Any model for for e-business . Please keep me posted .

Thanks

Nancy Bassiouny
Posted by ""Nancy Bassiouny"" <nancy@mashy.com> posting date Tue, 5 Dec 2006 04:25:40 +0200 _______________________________________________

Posted: **Wed Dec 06, 2006 6:37 pm**

Posted by ""Gary Hirsch"" <GBHirsch@comcast.net> Hi Nancy,

A few years ago, some colleagues and I developed a simulator based on an SD model of a media business that included a traditional print newspaper and an online business. The online component had the characteristics of what you describe as a portal business. The simulator deals with the dynamics of shifting from print to online as well as how to run each component profitably in a shifting market. You can read more about it by downloading a paper that was presented at the 2003 ISDC. ( http://www.systemdynamics.org/conferenc ... RS/225.pdf ) A diagram on P. 21 of the paper will give you a good idea of how we modeled the online business. Please contact me at the address below (not the one on the paper) if you would like more information.

Best regards,

Gary Hirsch
Posted by ""Gary Hirsch"" <GBHirsch@comcast.net> posting date Tue, 5 Dec 2006 12:46:29 -0500 _______________________________________________

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