A key challenge to the deployment of a number of interesting networking technologies, such as content distribution networks, application layer multicast and reliable multicast protocols, is the efficient many-to-many distribution of data using network overlays. The use of network overlays has become increasingly popular due to the potential problems associated with native IP multicast and the d...

Social Overlays suffer from high message delivery delays due to insufficient routing strategies. Limiting connections to device pairs that are owned by individuals with a mutual trust relationship in real life, they form topologies restricted to a subgraph of the social network of their users. While centralized, highly successful social networking services entail a complete privacy loss of thei...

Gossip, or epidemic, protocols have emerged as a highly scalable and resilient approach to implement several application level services such as reliable multicast, data aggregation, publish-subscribe, among others. All these protocols organize nodes in an unstructured random overlay network. In many cases, it is interesting to bias the random overlay such that it better matches the underlying n...

Spiral overlays, for use with powder diffraction patterns and diffraction spacing profiles, can be at once forgiving of uncertainties in camera constant calibration and (once these are dealt with) sensitive to very small differences in lattice parameter. By facilitating comparison of different lattices in a common physical metric (namely a diffraction experiment of fixed camera constant and sca...

1 Overview Multiple related displays and windows are common in monitoring and business environments where the user is trying to integrate different data views into a coherent information picture. Our particular application is the design of efficient visualizations for the management and operation of high-performance buildings, and our users are the planners and building operators responsible fo...

abstract   background: different methods of surgical treatment for acromioclavicular(ac) joint injury were considered in the literature. the purpose of the study was to compare intra- articular ac repair technique with the extra-articular coracoclavicular repair technique for the patients with rockwood type iii and vac joint injury when indicated.   methods: nineteen consecutive patients with r...