The study of information-based actions and processes has been a
vibrant - terface between logic and computer science for several decades
now. Indeed, several natural perspectives come together here. On the one
hand, logical s- tems may be used to describe the dynamics of arbitrary
computational p- cesses - as in the many sophisticated process logics
available today. But also, key logical notions such as model checking or
proof search are themselves informational processes involving agents
with goals. The interplay between these descriptive and dynamic aspects
shows even in our ordinary language. A word like "proof" hdenotes both a
static 'certificate' of truth, and an activity which humans or machines
engage in. Increasing our understanding of l- ics of this sort tells us
something about computer science, and about cognitive actions in
general. The individual chapters of this book show the state of the art
in current - vestigations of process calculi such as linear logic, and -
with mainly two major paradigms at work, namely, linear logic and modal
logic. These techniques are applied to the title themes of concurrency
and synchronisation, but there are also many repercussions for topics
such as the geometry of proofs, categorial semantics, and logics of
graphs. Viewed - gether, the chapters also offer exciting glimpses of
future integration, as the reader moves back and forth through the book.