This book constitutes the thoroughly refereed post-conference proceedings of the 9th International Workshop on Engineering Societies in the Agents World, ESAW 2008, held in Saint-Etienne, France, in September 2008.

Modeling TeleTruck: A Case Study.- Modeling TeleTruck: A Case Study.- I Organisations and Norm-Governed Systems.- Specifying Open Agent Systems: A Survey.- From Multi-Agent to Multi-Organization Systems: Utilizing Middleware Approaches.- II Privacy and Security.- RBAC-MAS and SODA: Experimenting RBAC in AOSE.- Sensitive Data Transaction in Hippocratic Multi-Agent Systems.- III Agent-Oriented Software Engineering.- ADELFE Design, AMAS-ML in Action.- Exception Handling in Goal-Oriented Multi-Agent Systems.- A Reverse Engineering Form for Multi Agent Systems.- Coping with Exceptions in Agent-Based Workflow Enactments.- IV Emergence and Self-organisation.- Contribution to the Control of a MAS’s Global Behaviour: Reinforcement Learning Tools.- Peer Pressure as a Driver of Adaptation in Agent Societies.- A Multi-Agent Resource Negotiation for the Utilitarian Welfare.- V Simulation.- Interaction Biases in Multi-Agent Simulations: An Experimental Study.- Engineering Self-modeling Systems: Application to Biology.- From Individuals to Social and Vice-versa.

This book constitutes the thoroughly refereed post-conference proceedings of the 9th International Workshop on Engineering Societies in the Agents World, ESAW 2008, held in Saint-Etienne, France, in September 2008.

The 13 revised full papers presented together with 1 invited long paper were carefully selected from 29 submissions during two rounds of reviewing and revision. The papers are organized in topical sections on organisations and norm-governed systems, privacy and security, agent-oriented software engineering, emergence and self-organisation, as well as simulation.

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