منابع مشابه
To the Lighthouse
The extreme hypothesis that essentially all types of ultrarelativistic outflow – specifically AGN jets, pulsar wind nebulae and GRB –are electromagnetic, rather than gas dynamical, phenomena is considered. Electromagnetic flows are naturally anisotropic and self-collimating so as to produce jet-like features. The relativistic force-free description of these flows, which is simpler than the rela...
متن کاملWork Related to Lighthouse
This paper examines the relationship between Lighthouse and current verification and analysis work within the system community. Recent work on ownership often describes ownership using flow insensitive or flow sensitive types. At times this boundary is not perfectly clear. Flow insensitive ownership analysis tends to use simpler models that facilitate static checking of the system in question. ...
متن کاملDetails of Lighthouse
Lighthouse is an on-line interface for a Web-based information retrieval system. It integrates two known presentations of the retrieved results { the ranked list and clustering visualization { in a novel and eeective way. We describe a working implementation of the system. It accepts queries from a user, collects the retrieved documents from the search engine, organizes and presents them to the...
متن کاملLighthouse: Showing the Way to Relevant Information
Lighthouse is an on-line interface for a Web-based information retrieval system. It accepts queries from a user, collects the retrieved documents from the search engine, organizes and presents them to the user. The system integrates two known presentations of the retrieved results – the ranked list and clustering visualization – in a novel and effective way. It accepts the user’s input and adju...
متن کاملAttosecond pulses measured from the attosecond lighthouse
The attosecond lighthouse is a method of using ultrafast wavefront rotation with high-harmonic generation to create a series of coherent, spatially separated attosecond pulses. Previously, temporal measurements by photoelectron streaking characterized isolated attosecond pulses created by manipulating the single-atom response1–4. The attosecond lighthouse, in contrast, generates a series of pul...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1876
ISSN: 0036-8733
DOI: 10.1038/scientificamerican06101876-373bsupp