arXiv:q-bio/0412003v1 [q-bio.CB] 1 Dec 2004 D A LL A S , T E X A S S O U T H E R N M E T H O D I S T U N I V E R S I T Y A Structured-Population Model of Proteus mirabilis Swarm-Colony Development Bruce P. Ayati SMU Math Report 2004-04 DEPARTMENT OF MATHEMATICS SOUTHERN METHODIST UNIVERSITY