Spiral Powder Overlays

Spiral Powder Overlays

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...

Blending Polyhedra with Overlays

We introduce a novel method for constructing polyhedra by blending together two or more existing polyhedra, using a dualization method. The method results in a Minkowski sum, analogous to that of overlay tilings [5], which uses a topological dual operation to create tilings from a network (a graph embedded in a plane). This paper extends that method to networks on the surface of the unit sphere...

Anonymous Publish-Subscribe Overlays

Self-Organizing Overlays

Overlays are an important tool for deploying new services on the Internet. However, the existing overlays are statically configured. For fault tolerance, ease of management, and efficiency it is crucial that overlays be self-organizing. We present a distributed algorithm to automatically configure the nodes into a logical topology which is dynamic and efficient.

Scalable Self-Organizing Overlays

Recent developments including peer-to-peer networks and application-level multicast have generated interest in overlays, and by extension in algorithms for automatically maintaining overlay structures. In this paper, we present a self-organizing protocol for forming and managing overlays that scales to at least tens of thousands of nodes. Previous algorithms target small scale overlays and do n...