?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Self-Replicating+Machines+in+Continuous+Space+with+Virtual+Physics&rft.creator=Smith%2C+Arnold&rft.creator=Turney%2C+Peter&rft.creator=Ewaschuk%2C+Robert&rft.subject=Dynamical+Systems&rft.subject=Theoretical+Biology&rft.description=JohnnyVon+is+an+implementation+of+self-replicating+machines+in+%0Acontinuous+two-dimensional+space.+Two+types+of+particles+drift+%0Aabout+in+a+virtual+liquid.+The+particles+are+automata+with+%0Adiscrete+internal+states+but+continuous+external+relationships.+%0ATheir+internal+states+are+governed+by+finite+state+machines+but+%0Atheir+external+relationships+are+governed+by+a+simulated+physics+%0Athat+includes+Brownian+motion%2C+viscosity%2C+and+spring-like+attractive+%0Aand+repulsive+forces.+The+particles+can+be+assembled+into+patterns+%0Athat+can+encode+arbitrary+strings+of+bits.+We+demonstrate+that%2C+if+%0Aan+arbitrary+%22seed%22+pattern+is+put+in+a+%22soup%22+of+separate+individual+%0Aparticles%2C+the+pattern+will+replicate+by+assembling+the+individual+%0Aparticles+into+copies+of+itself.+We+also+show+that%2C+given+sufficient+%0Atime%2C+a+soup+of+separate+individual+particles+will+eventually+%0Aspontaneously+form+self-replicating+patterns.+We+discuss+the+implications+%0Aof+JohnnyVon+for+research+in+nanotechnology%2C+theoretical+biology%2C+and+%0Aartificial+life.&rft.publisher=MIT+Press&rft.date=2003&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F2888%2F1%2FNRC-44969.pdf&rft.identifier=++Smith%2C+Arnold+and+Turney%2C+Peter+and+Ewaschuk%2C+Robert++(2003)+Self-Replicating+Machines+in+Continuous+Space+with+Virtual+Physics.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F2888%2F