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Armstrong is in Pennsylvania, Ohio, Maryland, New York, West Virginia, and Kentucky for its digital cable services, most commonly providing television, telephone and high-speed Internet service. Currently, Armstrong employs over 2,300 people. The company's headquarters are in Butler County, western Pennsylvania, with local offices scattered ...
A Secure Terminal Equipment desk set. A secure telephone is a telephone that provides voice security in the form of end-to-end encryption for the telephone call, and in some cases also the mutual authentication of the call parties, protecting them against a man-in-the-middle attack. Concerns about massive growth of telephone tapping incidents ...
Armstrong Telephone Company is a telecommunications provider, and part of the Armstrong Group of Companies. The company primarily operates as a local exchange carrier in rural markets in West Virginia, Maryland, Pennsylvania, New York and Ohio . The following Armstrong companies are registered with the FCC : [1] Armstrong Digital Services, Inc ...
On June 8, 2013, the Director of National Intelligence issued a fact sheet stating that PRISM "is not an undisclosed collection or data mining program," but rather "an internal government computer system" used to facilitate the collection of foreign intelligence information "under court supervision, as authorized by Section 702 of the Foreign ...
The Office of Secure Transportation ( OST) is a highly-specialized law enforcement division of the National Nuclear Security Administration within the United States Department of Energy. The OST's mission is to provide safe and secure transportation of nuclear weapons and components and special nuclear materials and conduct other missions in ...
Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing (ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign countries or areas via international telecommunication networks.
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Armstrong's axioms are a set of references (or, more precisely, inference rules) used to infer all the functional dependencies on a relational database. They were developed by William W. Armstrong in his 1974 paper. [ 1] The axioms are sound in generating only functional dependencies in the closure of a set of functional dependencies (denoted ...