SelfReplicating Machines Will Stevens  

Papers, Posters, Talks etc...
2012
Using Transition Systems to Describe and Predict the Behaviour of Structured Excitable Media, Stevens W. M. (2012), Natural Computing, DOI: 10.1007/s1104701293554 (Here is a link to the preprint of this paper) Computing with Planar Toppling Domino Arrangements, Stevens W. M. (2012), Natural Computing, Vol 11, Issue 4, pages 665672, DOI: 10.1007/s110470129341x This is an extended version of the conference paper from 2011.
Timedependent wave selection for information processing in excitable media, Stevens W. M., Adamatzky A, Jahan I, De Lacy Costello B (2012), Physical Review E 85, 066129 (2012) (Here is a link to the preprint of this paper) Describes a way of constructing logic circuits in excitable media by selecting waves based on how long it takes them to propagate from place to place. An experimental implementation of a 4bit integer square root circuit in a BelousovZhabotinsky excitable medium is described. 2011
A selfreplicating programmable constructor in a kinematic simulation environment, Stevens W. M. (2011) Describes the 'CBlocks3D' environment and a selfreplicating programmable constructor in that environment.
Computing with Planar Toppling Domino Arrangements, Stevens W. M. (2011) Shows that any Boolean function can be implemented using a planar arrangements of dominoes  i.e. with no bridges for crossing one line of dominoes over another. 2010 The longitudinal course of bipolar disorder as revealed through weekly textmessaging., Bopp J.M., Miklowitz D. J., Goodwin G. M., Stevens W., Rendell J. M., Geddes J. R. (2010). Bipolar Disorders Vol 12, pages 327334. My role in this work was the design and software implementation of a textmessage based mood rating system. Lithium plus valproate combination therapy versus monotherapy for relapse prevention in bipolar I disorder (BALANCE): a randomised openlabel trial, The BALANCE investigators and collaborators (2010). The Lancet, Vol 375, Issue 9712, pages 385395 My role in this work was data management and software support for the last 3 years of the BALANCE clinical trial.
Adapting Gosper's Hashlife Algorithm for Kinematic Environments, Stevens W. M. (2010) 2009
A Kinematic Turing Machine, Stevens W. M. (2009) This is a modified version of the conference paper from 2007.
A kinematic model of a selfreplicating programmable constructing machine, Stevens W. M. (2009)
Automated mood monitoring and reporting with a novel graphical method of displaying mood variation over time, Stevens W. M., Rendell J. M., Attenburrow MJ, Geddes J. R. (2009)
Parts closure in a kinematic selfreplicating programmable constructor, Stevens W. M. (2009) Describes a part discriminating system in the 'CBlocks3D' environment. 2008
Parts closure in a kinematic selfreplicating programmable constructor, Stevens W. M. (2008)
I won a young author award for this paper/talk.
Logic circuits in a system of repelling particles, Stevens W. M. (2008) This is a modified version of the workshop paper from 2006. 2007
Simulating SelfReplicating Machines, Stevens W. M. (2007) Describes the 'CBlocks' environment, describes an SRM in the CBlocks environment and discusses issues related to simulating selfreplicating machines. Diagram of SRM for 'Simulating SelfReplicating Machines' paper.
A Kinematic Turing Machine, Stevens W. M. (2007) Presented at Unconventional Computing 2007 in Bristol, UK. Describes the operation of a Turing machine in a kinematic simulation environment. 2006
Logic circuits in a system of repelling particles, Stevens W. M. (2006) Workshop presentation at the Unconventional Computing 2006 conference in York, UK. Shows how logic circuits can be made in a very simple kinematic particle system. 2005
Computation, Construction and SelfReplication, Stevens W. M. (2005)
A programmable constructor in a kinematic environment, Stevens W. M. (2005) 2004
Nodes: An Environment for Simulating SelfReplicating Machines, Stevens W. M. (2004) Describes the 'Nodes' environment, and introduces an SRM constructed in the Nodes environment. 