Section I: Agent Theories -- Reasoning about Visibility, Perception, and Knowledge -- A Spectrum of Modes of Knowledge Sharing between Agents -- Observability-based Nested Belief Computation for Multiagent Systems and Its Formalization -- On the Correctness of PRS Agent Programs -- Incorporating Uncertainty in Agent Commitments -- Section II: Agent and System Architectures -- Rational Cognition in OSCAR -- Agents for Information Broadcasting -- On the Evaluation of Agent Architectures -- Toward a Methodology for AI Architecture Evaluation: Comparing Soar and CLIPS -- Reactive-System Approaches to Agent Architectures -- A Planning Component for RETSINA Agents -- A Scalable Agent Location Mechanism -- Section III: Agent Languages -- Reactivity in a Logic-Based Robot Programming Framework -- Extending ConGolog to Allow Partial Ordering -- Operational Semantics of Multi-Agent Organizations -- Open Multi-Agent Systems: Agent Communication and Integration -- Toward Team-Oriented Programming -- Section IV: Agent-Oriented Software Engineering -- Agent-Oriented Software Engineering -- Multiagent System Engineering: The Coordination Viewpoint -- Using Multi-context Systems to Engineer Executable Agents -- Structuring BDI Agents in Functional Clusters -- Towards a Distributed, Environment-Centered Agent Framework -- Section V: Decision Making in a Social Context -- Variable Sociability in Agent-Based Decision Making -- Cooperation and Group Utility -- Relating Quantified Motivations for Organizationally Situated Agents -- The Role and the Impact of Preferences on Multiagent Interaction -- Deliberative Normative Agents: Principles and Architecture.