Western Union in the context of "Time division multiple access"

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⭐ Core Definition: Western Union

The Western Union Company is an American multinational financial services corporation headquartered in Denver, Colorado.

Founded in 1851 as the New York and Mississippi Valley Printing Telegraph Company in Rochester, New York, the company changed its name to the Western Union Telegraph Company in 1856 after merging with several other telegraph companies. It dominated the American telegraphy industry from the 1860s to the 1980s, pioneering technology such as telex and developing a range of telegraph-related services, including wire money transfer, in addition to its core business of transmitting and delivering telegram messages.

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👉 Western Union in the context of Time division multiple access

Time-division multiple access (TDMA) is a channel access method for shared-medium networks. It allows several users to share the same frequency channel by dividing the signal into different time slots. The users transmit in rapid succession, one after the other, each using its own time slot. This allows multiple stations to share the same transmission medium (e.g., radio frequency channel) while using only a part of its channel capacity. Dynamic TDMA is a TDMA variant that dynamically reserves a variable number of time slots in each frame to variable bit-rate data streams, based on the traffic demand of each data stream.

TDMA is used in digital 2G cellular systems such as Global System for Mobile Communications (GSM), IS-136, Personal Digital Cellular (PDC) and iDEN, in the Maritime Automatic Identification System, and in the Digital Enhanced Cordless Telecommunications (DECT) standard for portable phones. TDMA was first used in satellite communication systems by Western Union in its Westar 3 communications satellite in 1979. It is now used extensively in satellite communications, combat-net radio systems, and passive optical network (PON) networks for upstream traffic from premises to the operator.

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Western Union in the context of Afghan identity card

The Afghan Tazkira (Dari: تذکره تابعیت; Pashto: د تابعیت تذکره) is an official national identity document issued to every citizen of Afghanistan, which includes the Afghan diaspora around the world.

The document is used to obtain an electronic Afghan identity card (e-Tazkira), which is valid for up to 10 years and required for many things such as employment, registering in school, operating a business, buying or renting a house, opening a bank account, sending or receiving money through Western Union, purchasing a SIM card, obtaining a passport, booking airline tickets, staying in hotels, etc. The documents serve as proof of identity and residency but more importantly Afghan nationality. Both the Tazkira certificate and e-Tazkira are issued by the National Statistics and Information Authority (NSIA), which is headquartered in Kabul but has offices by the name of Asan Khedmat (Easy Services) in various provinces of Afghanistan.

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Western Union in the context of J. P. Morgan

John Pierpont Morgan Sr. (April 17, 1837 – March 31, 1913) was an American financier and investment banker who dominated corporate finance on Wall Street throughout the Gilded Age and Progressive Era. As the head of the banking firm that ultimately became known as JPMorgan Chase & Co., he was a driving force behind the wave of industrial consolidations in the United States at the turn of the twentieth century.

Over the course of his career on Wall Street, Morgan spearheaded the formation of several prominent multinational corporations including U.S. Steel, International Harvester, and General Electric. He and his partners also held controlling interests in numerous other American businesses including Aetna, Western Union, the Pullman Car Company, and 21 railroads. His grandfather Joseph Morgan was one of the co-founders of Aetna. Through his holdings, Morgan exercised enormous influence over capital markets in the United States. During the Panic of 1907, he organized a coalition of financiers that saved the American monetary system from collapse.

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Western Union in the context of Ezra Cornell

Ezra Cornell (/kɔːrˈnɛl/; January 11, 1807 – December 9, 1874) was an American businessman, politician, academic, and philanthropist. He was involved in the founding of Western Union and a co-founder of Cornell University. He also served as president of the New York Agriculture Society and as a New York State Senator.

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Western Union in the context of Worth Street

Worth Street is a two-way street running roughly northwest-southeast in Manhattan, New York City. It runs from Hudson Street, TriBeCa, in the west to Chatham Square in Chinatown in the east. Past Chatham Square, the roadway continues as Oliver Street, a north-south street running one-way northbound. Between West Broadway and Church Street, Worth Street is also known as Justice John M. Harlan Way in honor of the Supreme Court justice and alumnus of the nearby New York Law School. Between Centre and Baxter Streets, Worth Street is also known as the "Avenue of the Strongest", "New York's Strongest" being a nickname for the city's Department of Sanitation.

The western end of Worth Street, between Hudson Street and West Broadway, abuts 60 Hudson Street, the former Western Union headquarters that later was converted into an internet hub. Worth Street passes through the cluster of government offices and courthouses centered on Foley Square. 125 Worth Street (at Centre Street) houses the headquarters of the New York City Health and Hospitals Corporation, the Department of Health and Mental Hygiene, and the Department of Sanitation. Additionally, the New York Supreme Court courthouses at 60 Centre Street and 80 Centre Street (the Louis J. Lefkowitz Building) and the Daniel Patrick Moynihan Federal Courthouse (Southern District of New York) at 500 Pearl Street all have entrances facing Worth Street.

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Western Union in the context of Frank Kanning Mott

Frank Kanning Mott (January 21, 1866 – 1958) was the 35th mayor of Oakland, California.

Mott was born in San Francisco on January 21, 1866, but his family moved to nearby Oakland when he was two years old. His father, who worked for the Central Pacific Railroad (later Southern Pacific Railroad), died when he was 11. To support the family, Mott quit school and worked as a messenger boy for Western Union and then as a telephone operator, the first ever in Oakland, according to his obituary in the Tribune. He entered the hardware business as a clerk at the age of 16, eventually becoming the sole proprietor of Frank K. Mott Co. He entered politics in 1894 when then-Mayor George Pardee appointed him to the city council to fill H.P. Dalton's vacant seat. He went on to serve two more terms before being elected mayor in 1905.

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Western Union in the context of Gilbert Vernam

Gilbert Sandford Vernam (April 3, 1890 – February 7, 1960) was a Worcester Polytechnic Institute 1914 graduate and AT&T Bell Labs engineer who, in 1917, invented an additive polyalphabetic stream cipher and later co-invented an automated one-time pad cipher. Vernam proposed a teleprinter cipher in which a previously prepared key, kept on paper tape, is combined character by character with the plaintext message to produce the ciphertext. To decipher the ciphertext, the same key would be again combined character by character, producing the plaintext. Vernam later worked for the Postal Telegraph Company, and became an employee of Western Union when that company acquired Postal in 1943. His later work was largely with automatic switching systems for telegraph networks.

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