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List of Dewey Decimal classes. The Dewey Decimal Classification (DDC) is structured around ten main classes covering the entire world of knowledge; each main class is further structured into ten hierarchical divisions, each having ten divisions of increasing specificity. [1] As a system of library classification the DDC is "arranged by ...
Search engines, including web search engines, selection-based search engines, metasearch engines, desktop search tools, and web portals and vertical market websites have a search facility for online databases .
Radar beacon. Racon signal as seen on a radar screen. This beacon receives using sidelobe suppression and transmits the letter "Q" in Morse code near Boston Harbor (Nahant) 17 January 1985. Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1 ...
Scams are becoming more and more prevalent. Here's a list of scammer phone numbers and area codes to avoid answering if you don't know exactly who's calling.
The sortable table below contains the three sets of ISO 3166-1 country codes for each of its 249 countries, links to the ISO 3166-2 country subdivision codes, and the Internet country code top-level domains (ccTLD) which are based on the ISO 3166-1 alpha-2 standard with the few exceptions noted. See the ISO 3166-3 standard for former country codes.
The Information Coding Classification ( ICC) is a classification system covering almost all extant 6500 knowledge fields ( knowledge domains ). Its conceptualization goes beyond the scope of the well known library classification systems, such as Dewey Decimal Classification (DDC), Universal Decimal Classification (UDC), and Library of Congress ...
The North American Industry Classification System or NAICS ( / neɪks /) [1] is a classification of business establishments by type of economic activity (the process of production). It is used by governments and business in Canada, Mexico, and the United States of America. It has largely replaced the older Standard Industrial Classification (SIC) system, except in some government agencies ...
The International Code of Signals ( INTERCO) is an international system of signals and codes for use by vessels to communicate important messages regarding safety of navigation and related matters. Signals can be sent by flaghoist, signal lamp ("blinker"), flag semaphore, radiotelegraphy, and radiotelephony. The International Code is the most ...
The Public Protection Classification (PPC) program, is a tool developed by the Insurance Services Office (ISO) for property and casualty insurers to properly assess their risk by rating fire protection services throughout the United States. [1]
A complete number is referred to as a European Vehicle Number [3] and comprises 12 digits as originally outlined in UIC Code of Practice 438-3, Identification marking for tractive stock. Digits 1–2 are the type code, 3–4 the country of origin (where the vehicle is registered), 5–11 are defined by the country concerned, 12 is the check digit calculated via the Luhn algorithm. [4] It is ...