The Contrast Sensitivity Function
Prepared by Peter Wenderoth
Imagine that you are driving a car in a very thick fog. Objects which are normally easily seen, like black writing on a white billboard, will be hard to see because the black writing and the white background will both be greyish. That is the difference between whites and blacks - contrast - will be reduced
The Digital Library of Mathematical Functions (DLMF) Project was initiated to perform a complete revision of Abramowitz and Stegun’s Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables, published in 1964 by the National Bureau of Standards. See R. F. Boisvert and D. W. Lozier (2001) for historical background about this important publication. The DLMF Project has updated and expanded the coverage for current needs. The results have been published in book form as the NIST Handbook of Mathematical Functions, by Cambridge University Press, and disseminated in the free electronic Digital Library of Mathematical Functions. For further details about the project see Preface.
Hi folks, This time I'm in some trouble. Please help me in this issue. My site will have forms with number of text fields, I'll store the form data in MySQL database and later those data will be fetched and populated on web pages. Now, the forms are filled up by users, so I need to escape all unwanted characters while keeping the necessary ones intact. Suppose I get a field data in the form of $_POST. So far I was using combination of mysql_real_escape_string, htmlentities, striptags
CREATE FUNCTION pg_catalog.text(integer) RETURNS text STRICT IMMUTABLE LANGUAGE SQL AS 'SELECT textin(int4out($1));';
CREATE CAST (integer AS text) WITH FUNCTION pg_catalog.text(integer) AS IMPLICIT;
Die Levenshtein-Distanz ist eine effiziente Möglichkeit, die Ähnlichkeit von Strings zu bestimmen, Damit können beispielsweise Tippfehler bei der Verwendung von Suchfunktionen elegant korrigiert werden. Wenn man eine Anzeige im Stile von "Meinten Sie vielleicht ..." anzeigen möchte, braucht man hierzu eine Funktion die "das ähnlichste" Wort in einer Datenbanktabelle findet. Hierzu habe ich eine MySQL-GROUP-Funktion geschrieben.
In much of the world (but not in the U.S.,) drug-coated stents are avoided by cardiologists because of their high cost. To compensate for the inability to use these stents, many cardiologists outside of the U.S. have taken to administering sirolimus (also
In the Injury Theory, it's damage to the arterial endothelium, followed by platelet activation, then smooth muscle cell migration to injury, then macrophages, with resulting "foam cells." Engorged foam cells burst, starting the injury cycle all over again
it may no longer be enough to measure just HDL levels without determining levels of paroxonase and platelet-activating acetylhydrolase; levels of these enzymes may determine whether HDL is proinflammatory or protective. Likewise, measuring Lp(a) and small
Overweight men and women assigned to drink fructose-sweetened beverages as 25% of their energy intake developed atherogenic lipid profiles in just two weeks; unlike glucose, fructose promotedatherogenic lioproprotein phenotypes and glucose intolerance/ins
Statins have pleiotropic effects: anti-inflammatory, immunomodulatory, antithrombotic, and vascular activity, & may improve left ventricular myocardial function & left ventricular diastolic function by increasing vascular elasticity.
Structure, function, clinical significance, and biochemistry of vitamins and related cofactors. Molecular structure (graphics). Therapeutic applications. Deficiencies and sequelae.
Riemann zeta function From Wikipedia, the free encyclopedia , In , the Riemann zeta function , named after , is a of significant importance in , because of its relation to the distribution of . It also has applications in o