Role Playing on the Web. Guidelines for designing and evaluating personas online.

This article starts from the premise that humans communicate through a series of roles that they assume appropriate to their rhetorical purposes. Even when speaking face to face, they present a version of themselves that they deem suitable for the time, place, and situation. When this rhetorical principle is applied to Web design, it provides powerful insights and strategies for designing and evaluating online communication. We begin this article by tracing how the tradition of rhetorical role playing has become incorporated into the electronic medium. We then present a series of guidelines in the form of prompts or questions as starting points for effective Web design

Recent progress in neutrino factory and muon collider research within the Muon collaboration

We describe the status of our effort to realize a first neutrino factory and the progress made in understanding the problems associated with the collection and cooling of muons towards that end. We summarize the physics that can be done with neutrino factories as well as with intense cold beams of muons. The physics potential of muon colliders is reviewed, both as Higgs Factories and compact high energy lepton colliders. The status and timescale of our research and development effort is reviewed as well as the latest designs in cooling channels including the promise of ring coolers in achieving longitudinal and transverse cooling simultaneously. We detail the efforts being made to mount an international cooling experiment to demonstrate the ionization cooling of muons