منابع مشابه
Reading aids for the blind.
Before escorting you into the microcosmic world of reading aids, let me supply some background . In 1913, a British physicist, Dr . E.E. Fournier d'Albe described a reading aid for blind people and later built a crude model . A young woman, Mary Jameson, demonstrated it . Then a British engineering firm, Barr and Stroud, redesigned it and built six copies. Several blind persons have used them d...
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The develo~aent of a readi~ machine for the blind implies the solution of problems on such diverse fields as linguistics, micro computing and ergonomics. Because of the stats of the art in Computational Lin&qaist$cs, however, the lin~qaistic problems turn out to be the major draw bask in this field of scientific endeavor. That is the reason why the paper for the greater part is devoted to the d...
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This paper describes an embedded device dedicated for blind or visually impaired people. The main aim of this system is to build an automatic text reading assistant using existing hardware associated with innovative algorithms. A personal digital assistant (PDA) was chosen because it combines small-size, computational resources and low cost price. Three key technologies are necessary: text dete...
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The ECG showed normal sinus rhythm at 65 per min., with a very short P-R interval (0.10 sec.). On the fourth beat of the first lead set (simultaneous leads I, II, III), which is marked with an arrow, there is an atrial premature, contraction. This latter beat has a low, rather flat P wave preceding the QRS with a P-R interval of 0.20 sec. The contrast between the sinus beats (with short PR) and...
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The pericardium surrounds the heart and consists of a visceral layer, which is contiguous with the epicardium of the heart, and a parietal layer, which forms a sac around the heart (Wann & Passen, 2008). Located between the parietal and visceral layers is a potential space called the pericardial cavity. The pericardial cavity normally contains as much as 50 mL of an ultrafiltrate of plasma. Ana...
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ژورنال
عنوان ژورنال: Cardiovascular Innovations and Applications
سال: 2019
ISSN: 2009-8618
DOI: 10.15212/cvia.2017.0008