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Yumpu was launched in 2011 as a self-publishing service for B2B by Norbert Rom's i-magazine AG (founded 2006). [1] [2] I-magazine AG, in turn, is a subsidiary of adRom Holding AG, which was also founded by Norbert Rom. [3] In 2016, Yummy Publishing GmbH was founded in Austria as a subsidiary of i-Magazine AG, which supports the parent company with various services.
Centralized traffic control (CTC) is a form of railway signalling that originated in North America. CTC consolidates train routing decisions that were previously carried out by local signal operators or the train crews themselves.
CTC-16 is a second-generation design based on the Digitrack 1600, a commercial system marketed from 1972 to 1976. [12] The CTC-16 digital train control system is totally compatible with the Digitrack 1600. Digitrack 1600 was analog in nature, with pulses riding on a constant DC track voltage.
Pressing one half of the button, (often marked with a speaker icon or the letters "MON", short for "MONitor") disables the CTCSS decoder and reverts the receiver to hearing any signal on the channel. This is called the monitor function. There is sometimes a mechanical interlock: the user must push down and hold the monitor button or the ...
The simulator is operated from the perspective of a CTC dispatcher. Track diagrams similar to actual CTC displays are provided, and train operations run according to a timetable. Operations can be run in real time or adjusted fast or slow. Version 2 of the software was released in 1997 and supported multiple track territories.
CBTC is a signalling standard defined by the IEEE 1474 standard. [1] The original version was introduced in 1999 and updated in 2004. [1] The aim was to create consistency and standardisation between digital railway signalling systems that allow for an increase in train capacity through what the standard defines as high-resolution train location determination. [1]
Railroads Illustrated, formerly known as CTC Board, was a monthly magazine, published by White River Productions (WRP), devoted to railroad photography. WRP purchased CTC Board magazine from Hundman Publishing after the May 2006 issue, and rebranded the magazine as Railroads Illustrated , and used the CTC Board name for the news section.
An interactive electronic technical manual (IETM) is a portal to manage technical documentation. IETMs compress volumes of text into just CD-ROMs or online pages which may include sound and video , and allow readers to locate needed information far more rapidly than in paper manuals.