Cognitive spatial concepts are qualitative in nature, i.e., they are based not so much on exact quantities but on comparisons between perceived magnitudes. We develop a qualitative model for the representation of spatial knowledge (in particular, of positional information about 2-dimensional projections) that is based only on locative...

Calvin Hollywood is a photo artist from Heidelberg, Germany who combines photography and image editing in a most imaginative way. His personal style is characterized by the hyper sharpness, high contrasts, and almost painted look of his photos (http://www.calvinhollywood-blog.com/portfolio/). Digital editing plays an important role in his...

Adaptive Hypermedia has emerged as an important area of both academic and deployed research. It encompasses a broad range of research that will enable personalized, adaptive hypermedia systems to play an even more effective role in people’s lives. The Web has enabled the widespread use of many personalized systems, such as recommenders,...