Meteor of November 15
نویسندگان
چکیده
منابع مشابه
Lecture 19 — November 15 , 2012
In the last lecture, we saw the graph powering method, which allows us to increase the soundness gap but has the drawback of increasing the alphabet size from |Σ| to |Σ|dt (where |Σ| is a constant). In this lecture, we describe how to reduce the alphabet size (from |Σ|dt back to |Σ|), while causing only a small decrease in the gap (and a constant factor increase in the constraint graph size). T...
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Adherence to antihypertensive agents after ischemic stroke and risk of cardiovascular outcomes The authors examined 14,227 patients with ischemic stroke who were treated with antihypertensive (AH) agents. Each case was matched to 15 controls. Adherence to AH agents was associated with adherence to other secondary preventive therapies and a risk reduction for nonfatal vascular events after an is...
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We describe a case of a 65-year old man diagnosed with retinal vasoproliferative tumour secondary to posterior uveitis. The fluorescein angiography shows an interesting meteor-like leak emanating from the tumour and rising towards the superior retina in the later frames of the angiogram. Pictorially, we call it the "Retinal Meteor" and also describe the possible mechanism for this pattern of le...
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Q: Why are we using circuit lower bounds here, as opposed to a claim such as E ̸⊆ P for example? A: The proof of the Nisan-Wigderson pseudorandom generator relies on nonuniformity, by showing that distinguishing a pseudorandom generator implies a circuit for solving a hard problem – this reduction involves hardwiring advice into a circuit in order to solve the hard problem. A contradiction requi...
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ژورنال
عنوان ژورنال: Nature
سال: 1887
ISSN: 0028-0836,1476-4687
DOI: 10.1038/037178c0