This book constitutes the refereed proceedings of the 4th International Conference on Interactive Digital Storytelling, ICIDS 2011, held in Vancouver, Canada, in November/December 2011. The 17 full papers, 14 short papers and 16 poster papers were carefully reviewed and selected from 72 paper and poster submissions. In addition, the volume includes 6 workshops descriptions. The full and short papers have been organized into the following topical sections: interactive storytelling theory, new authoring modes, virtual characters and agents, story generation and drama managment, narratives in digital games, evaluation and user experience reports, tools for interactive storytelling.

Selected papers from the First International Symposium on Pavement and Geotechnical Engineering for Transportation Infrastructure held in Nanchang, China, June 5-7, 2011. Sponsored by the Nanchang Hangkong University and the International Association of Chinese Infrastructure Professionals (IACIP) in cooperation with the Geo-Institute of ASCE. Pavement and Geotechnical Engineering for Transportation contains 20 papers that represent the latest developments in the application of soil, rock, and paving materials to the study and application of geomechanics and transportation geotechnology. Topics include pavement structure and subgrade preparation such as: the use of chemical additives and geogrid reinforcement; performance assessment of concrete and asphalt mixtures; mathematical models for the simulation of geotechnical problems; and evaluation of soil types in relation to slope failure, consolidation, and embankment behaviour. This Geotechnical Practice Publication focuses on the application of geomechanics in transportation and will be of interest to both geotechnical engineers and transportation professionals.