The aim of the workshop is to bring together practitioners and researchers from academia, industry and government to present and discuss ideas about:

* How to deal with the complexity of software projects by multi-view modeling and separation of concerns about the design of functionality, interaction, concurrency, scheduling, and non-functional requirements, and
* How to ensure correctness and dependability of software by integrating formal methods and tools for modeling, design, verification and validation into design and development processes and environments.
* Case studies and experience reports about harnessing static analysis tools such as model checking, theorem proving, testing, as well as runtime monitoring.

The workshop will provide enough time for discussion on problems and research. Each presentation will be 25 minutes followed by 10 minutes discussion. Topics of interest include, but are not limited to, the following areas:

* Models, calculi, and tool support for component-based and object-oriented software;
* Mathematical frameworks, methods and tools for model-driven development;
* Models, calculi, and tool support for integrating different scheduling, interaction and concurrency models in highly adaptable systems

Pre-proceedings will be published as a technical report in the UIO report series. A special issue consisting of extended versions of selected papers from TTSS 2011 is intended to be published in the Elsevier journal Science of Computer Programming. Selected participants will be invited to submit an extended version of their papers after the workshop. These extended versions will be reviewed by the international program committee of TTSS'11, which will decide on their suitability for final publication in the special issue.