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Tail code. FF, the tail code of the USAF 1st Fighter Wing, is displayed on this F-15 Eagle. Tail codes are markings usually on the vertical stabilizer of U.S. military aircraft that help identify the aircraft's unit and/or base assignment. This is not the same as the serial number, bureau number, or aircraft registration which provide unique ...
The Parsons code, formally named the Parsons code for melodic contours, is a simple notation used to identify a piece of music through melodic motion – movements of the pitch up and down. [1] [2] Denys Parsons (father of Alan Parsons [3] ) developed this system for his 1975 book The Directory of Tunes and Musical Themes .
This board at Geneva Airport shows airline codes including AC (Air Canada), LX (Swiss) and AZ (ITA Airways). IATA airline designators are used to identify an airline for commercial purposes in reservations, timetables, tickets, tariffs, air waybills and in telecommunications . A flight designator is the concatenation of the airline designator ...
The national drug code is a unique 10 or 11 digit, 3-segment numeric identifier assigned to each medication listed under Section 510 of the US Federal Food, Drug, and Cosmetic Act. The segments identify the labeler or vendor, product (within the scope of the labeler), and trade package (of this product). The first segment, the labeler code, is ...
A linear code of length n and dimension k is a linear subspace C with dimension k of the vector space where is the finite field with q elements. Such a code is called a q -ary code. If q = 2 or q = 3, the code is described as a binary code, or a ternary code respectively. The vectors in C are called codewords.
List of ICD-9 codes 140–239: neoplasms. List of ICD-9 codes 240–279: endocrine, nutritional and metabolic diseases, and immunity disorders. List of ICD-9 codes 280–289: diseases of the blood and blood-forming organs. List of ICD-9 codes 290–319: mental disorders. List of ICD-9 codes 320–389: diseases of the nervous system and sense ...
An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.
IATA codes are abbreviations that the International Air Transport Association (IATA) publishes to facilitate air travel. They are typically 1, 2, 3, or 4 character combinations (referred to as unigrams, digrams, trigrams, or tetragrams, respectively) that uniquely identify locations, equipment, companies, and times to standardize international ...