Building on the success of the twelfth previous editions (1998-2010), a special track on coordination models, languages and applications will be held at SAC 2011. Over the last decade, we have witnessed the emergence of models, formalisms and mechanisms to describe concurrent and distributed computations and systems based on the concept of coordination. The purpose of a coordination model is to enable the integration of a number of, possibly heterogeneous, components (processes, objects, agents) in such a way that the resulting ensemble can execute as a whole, forming a software system with desired characteristics and functionalities which possibly takes advantage of parallel and distributed systems. The coordination paradigm is closely related to other contemporary software engineering approaches such as multi-agent systems, service-oriented architectures, component-based systems and related middleware platforms. Furthermore, the concept of coordination exists in many other Computer Science areas such as workflow systems, cooperative information systems, distributed artificial intelligence, and internet technologies.
After more than a decade of research, the coordination paradigm is gaining increased momentum in state-of-the-art engineering paradigms such as multi-agent systems and service-oriented architectures: in the first case, coordination abstractions are perceived as essential to design and support the working activities of agent societies; in the latter case, service coordination, orchestration, and choreography are going to be essential aspects of the next generations of systems based on Web services.
The Special Track on Coordination Models, Languages and Applications takes a deliberately broad view of what constitutes coordination.

• Novel models, languages, programming and implementation techniques
• Applications of coordination technologies
• Industrial points of view: experiences, applications, open issues
• Internet- and Web-based coordinated systems
• Coordination of multi-agent systems, including mobile agents, intelligent agents, and agent-based simulations
• Coordination in Service-oriented architectures and Web Services 
• Languages for service description and composition 
• Models, frameworks and tools for Group Decision Making 
• Modern Workflow Management Systems and Case-Handling 
• Coordination in Computer Supported Cooperative Work 
• Software architectures and software engineering techniques 
• Configuration and Architecture Description Languages 
• Coordination Middleware and Infrastructures 
• Coordination in GRID systems 
• Self-Organization-Based Approaches to Coordination such as Those Based on Swarm and Stigmergy 
• Coordination technologies, systems and infrastructures 
• Relationship with other computational models such as object oriented, declarative (functional, logic, constraint), programming or their extensions with coordination capabilities 
• Formal aspects (semantics, reasoning, verification)