Artificial Life VIII : Proceedings of the Eighth International Conference on Artificial Life Book

	Preface
	Classification of Random Boolean Networks	1
	Complexity Classes in Three-dimensional Gravitational Agents	9
	Formal Description of Autopoiesis for Analytic Models of Life and Social Systems	15
	The Birth and Death Process of Hypercycle Spirals	19
	Do Artificial Ants March in Step? Ordered Asynchronous Processes and Modularity in Biological Systems	28
	Importance of Evolved Structure for Emerging Self-organization in a Complex Competitive Situation	33
	Is Self-replication an Embedded Characteristic of Artificial/Living Matter?	38
	Von Neumann's Machine in the Shell: Enhancing the Robustness of Self-Replication Processes	49
	Interactive Self-Replicating, Self-Incrementing and Self-Decrementing Loops	53
	Selection of Catalysts through Cellular Reproduction	57
	Evolution in Asynchronous Cellular Automata	65
	An Abstraction of Intercellular Communication	75
	Dynamic Relationship between Diversity and Plasticity of Cell types in Multi-cellular State	79
	Generating Biomorphs with an Aesthetic Immune System	89
	A Model of Biological Differentiation in Adaptiogenesis to the Environment	93
	Cellulat	97
	Embryonics: Electronic Stem Cells	101
	Tautomerism as a Constraint on the Composition of Alternative Nucleotide Alphabets	106
	A POEtic Architecture for Bio-Inspired Hardware	111
	Digital Hormone Models for Self-Organization	116
	A Stress-based Speciation Model in LifeDrop	121
	On Attaining Maximal Fitness or How to Evolve Virtual Redwoods	127
	Diversity Evolution	131
	Characterization of Multispecies Living Ecosystems With Cellular Automata	138
	Adaptive Populations of Endogenously Diversifying Pushpop Organisms are Reliably Diverse	142
	Multilevel Selection and the Evolution of Predatory Restraint	146
	Stability and Task Complexity: A Neural Network Model of Evolution and Learning	153
	Aesthetic Selection of Developmental Art Forms	157
	Chemical Genetic Algorithms - Coevolution between Codes and Code Translation	164
	Improving and Still Passing the ALife Test: Component-Normalised Activity Statistics Classify Evolution in Geb as Unbounded	173
	Adaptive Crossover in Genetic Algorithms Using Statistics Mechanism	182
	The Origins of Mimicry Rings	186
	Will Selection for Mutational Robustness Significantly Retard Evolutionary Innovation on Neutral Networks?	192
	Multiobjective Evolutionary Search for One-Dimensional Cellular Automata in the Density Classification Task	202
	Evolutionary Dynamics of a Food Web with Recursive Branching and Extinction	207
	A Network of Dynamic Keystone Species	216
	Multi-level Selection and Immune Networks: Preliminary Discussion of an Abstract Model	223
	Evolution of Stable Ecosystems in Populations of Digital Organisms	227
	Towards a Comparison of Evolutionary Creativity in Biological and Cultural Evolution	233
	Evolving the Morphology of a Neural Network for Controlling a Foveating Retina - and its Test on a Real Robot	243
	A Stochastic Evolutionary Neuron Migration Process with Emerged Hebbian Dynamics	252
	Territory Formation in Mobile Robots	256
	Self-Organization in Ad Hoc Sensor Networks: An Empirical Study	260
	SOS++: Finding Smart Behaviors Using Learning and Evolution	264
	Temporally Adaptive Networks: Analysis of GasNet Robot Control Networks	274
	Steps Towards a Systematic Investigation of Possible Evolutionary Trajectories from Reactive to Deliberative Control Systems	283
	Fast and Loose: Biologically Inspired Couplings	293
	Evolving Teamwork and Role-Allocation with Real Robots	302
	Multi-Objectivity for Brain-Behavior Evolution of a Physically-Embodied Organism	312
	Simulating Turn-Taking Behaviours with Coupled Dynamical Recognizers	319
	Breve: a 3D Environment for the Simulation of Decentralized Systems and Artificial Life	329
	Evolutionary Bits'n'Spikes	335
	Meaningful Information, Sensor Evolution, and the Temporal Horizon of Embodied Organisms	345
	Misperception, Communication and Diversity	350
	ALife Investigation of Parental Investment in Reproductive Strategies	358
	Better Group Behaviors in Complex Environments using Global Roadmaps	362
	Programming with Stigmergy: Using Swarms for Construction	371
	The Effect of Agreements in a Game with Multiple Strategies for Cooperation	375
	Social Learning Mechanisms Compared in a Simple Environment	379
	Collective or Scattering: Evolving Schooling Behaviors to Escape from Predator	386
	Emergent Behavior in Phonological Pattern Change	390
	Cooperation in an Unpredictable Environment	394
	The Creation of Novelty in Artificial Chemistries	400
	SBEAT3: A Tool for Multi-part Music Composition by Simulated Breeding	410
	Formal Definition of Self-reproductive Systems	414
	Organizing Relations and Emergence	418
	Self-Assembling Dynamical Hierarchies	423