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Digi XBee is the brand name of a popular family of form factor compatible wireless connectivity modules from Digi International.The first XBee modules were introduced under the MaxStream brand in 2005 [1] and were based on the IEEE 802.15.4-2003 standard designed for point-to-point and star communications.
Hub Group, Inc. is a transportation and logistics management company in North America. A publicly traded company with over $5 billion in revenue, [ 3 ] Hub Group was founded in 1971 by Phillip Yeager, and is currently run by his grandson, Phillip D. Yeager.
The operations manual is the documentation by which an organisation provides guidance for members and employees to perform their functions correctly and reasonably efficiently. [1] It documents the approved standard procedures for performing operations safely to produce goods and provide services. [ 2 ]
Point-to-point (top) vs hub-and-spoke (bottom) networks. The hub-and-spoke model, as compared to the point-to-point model, requires fewer routes. For a network of n nodes, only n − 1 routes are necessary to connect all nodes so the upper bound is n − 1, and the complexity is O(n).
Hughes Airwest was then merged into Republic Airlines in 1980 which continued the Phoenix hub operation until the mid-1980s. Western Airlines came to Sky Harbor in 1957 with flights to Denver, Los Angeles and San Diego , Continental Airlines came in 1961 to El Paso, Los Angeles, and Tucson, and Delta Air Lines began flights to Dallas by 1969.
The 1981 operating margin was the highest full-year operating margin Midway would ever attain. Early Midway was marked by significant management turnover. Some founders (like Carlson) [ 6 ] were gone by 1980 and in early 1982, Irving Tague took a leave of absence for “personal reasons,” with David Hinson becoming acting chair. [ 41 ]
BNSF Railway (reporting mark BNSF) is the largest freight railroad in the United States. One of six North American Class I railroads, BNSF has 36,000 employees, [1] 33,400 miles (53,800 km) of track in 28 states, and over 8,000 locomotives. [2]
USS John F. Kennedy (CV-67) (formerly CVA-67), the only ship of her class, was an aircraft carrier, formerly of the United States Navy.Considered a supercarrier, [2] she was a variant of the Kitty Hawk class, and the last conventionally-powered carrier built for the Navy, [6] as all carriers since have had nuclear propulsion.