See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/228643297 New approaches to simulation and the older operator Article · January 2006 CITATIONS 3 READS 27 2 authors: Richard Wade Allen Systems Technology, Inc. 130 PUBLICATIONS 771 CITATIONS SEE PROFILE Bryan Reimer Massachusetts Institute of Technology 158 PUBLICATIONS 1,796 CITATIONS SEE PROFILE All content following this page was uploaded by Bryan Reimer on 28 December 2016. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately.