One former and one current guy from Karlsruhe released books in the last few days:
Semantic Management of Middleware by Daniel Oberle (or: Dr. Oberle - this is his dissertation).
Semantic Management of Middleware contributes an ontology-based approach to support the development and administration of middleware-based applications. The ontology is an explicit conceptual model with formal logic-based semantics. Therefore, its descriptions may be queried, may foresight required actions, or may be checked to avoid inconsistent system configurations. Semantic Management of Middleware builds a rigorous approach towards giving the declarative descriptions of components and services a well-defined meaning by specifying ontological foundations and by showing how such foundations may be realized in practical, up-and-running systems.More about the book here.
Semantic Web and Peer-to-Peer edited by Steffen Staab and Heinre Stuckenschmidt
Staab and Stuckenschmidt structured the selected contributions into four parts: Part I, "Data Storage and Access", prepares the semantic foundation, i.e. data modelling and querying in a flexible and yet scalable manner. These foundations allow for dealing with the organization of information at the individual peers. Part II, "Querying the Network", considers the routing of queries, as well as continuous queries and personalized queries under the conditions of the permanently changing topological structure of a peer-to-peer network. Part III, "Semantic Integration", deals with the mapping of heterogeneous data representations. Finally Part IV, "Methodology and Systems", reports experiences from case studies and sample applications.More about the book here