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Spoke–hub Distribution Paradigm
The spoke–hub distribution paradigm is a form of transport topology optimization in which traffic planners organize routes as a series of "spokes" that connect outlying points to a central "hub". Simple forms of this distribution/connection model contrast with point-to-point transit systems, in which each point has a direct route to every other point, and which modeled the principal method of transporting passengers and freight until the 1970s. Delta Air Lines pioneered the spoke–hub distribution model in 1955, and the concept revolutionized the transportation logistics industry after Federal Express demonstrated its value in the early 1970s. In the late 1970s the telecommunications and information technology sector subsequently adopted this distribution topology, dubbing it the star network network topology. "Hubbing" involves "the arrangement of a transportation network as a hub-and-spoke model". Benefits The hub-and-spoke model, as compared to the point-to-point ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airline Hub-1995
An airline is a company that provides air transport services for traveling passengers and freight. Airlines use aircraft to supply these services and may form partnerships or alliances with other airlines for codeshare agreements, in which they both offer and operate the same flight. Generally, airline companies are recognized with an air operating certificate or license issued by a governmental aviation body. Airlines may be scheduled or charter operators. The first airline was the German airship company DELAG, founded on November 16, 1909. The four oldest non-airship airlines that still exist are the Netherlands' KLM (1919), Colombia's Avianca (1919), Australia's Qantas (1920) and the Czech Republic's Czech Airlines (1923). Airline ownership has seen a shift from mostly personal ownership until the 1930s to government-ownership of major airlines from the 1940s to 1980s and back to large-scale privatization following the mid-1980s. Since the 1980s, there has also been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Air Lines
Eastern Air Lines, also colloquially known as Eastern, was a major United States airline from 1926 to 1991. Before its dissolution, it was headquartered at Miami International Airport in an unincorporated area of Miami-Dade County, Florida. Eastern was one of the " Big Four" domestic airlines created by the Spoils Conferences of 1930, and was headed by World War I flying ace Eddie Rickenbacker in its early years. It had a near monopoly in air travel between New York (state), New York and Florida from the 1930s until the 1950s and dominated this market for decades afterward. During airline deregulation in the late 1970s and early 1980s, labor disputes and high debt loads strained the company under the leadership of former astronaut Frank Borman. Frank Lorenzo acquired Eastern in 1985 and moved many of its assets to his other airlines, including Continental Airlines and Texas Air. After continued labor disputes and a crippling strike in 1989, Eastern ran out of money and was liq ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Public Transport
Public transport (also known as public transportation, public transit, mass transit, or simply transit) is a system of transport for passengers by group travel systems available for use by the general public unlike private transport, typically managed on a schedule, operated on established routes, and that charge a posted fee for each trip. There is no rigid definition; the ''Encyclopædia Britannica'' specifies that public transportation is within urban areas, and air travel is often not thought of when discussing public transport—dictionaries use wording like "buses, trains, etc." Examples of public transport include Public transport bus service, city buses, trolleybuses, trams (or light rail) and Passenger rail transport, passenger trains, rapid transit (metro/subway/underground, etc.) and ferry, ferries. Public transport between cities is dominated by airlines, intercity bus service, coaches, and intercity rail. High-speed rail networks are being developed in many parts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intermodal Freight
Intermodal freight transport involves the transportation of cargo, freight in an intermodal container or vehicle, using multiple modes of transportation (e.g., rail transport, rail, ship, aircraft, and truck), without any handling of the freight itself when changing modes. The method reduces cargo handling, and so improves security, reduces damage and loss, and allows freight to be transported faster. Reduced costs over road trucking is the key benefit for inter-continental use. This may be offset by reduced timings for road transport over shorter distances. Origins Intermodal transportation has its origin in 18th century England and predates the railways. Some of the earliest containers were those used for shipping coal on the Bridgewater Canal in England in the 1780s. Coal containers (called "loose boxes" or "tubs") were soon deployed on the early canals and railways and were used for road/rail transfers (road at the time meaning horse-drawn vehicles). Wooden coal containers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Classification Yard
A classification yard (American and Canadian English ( Canadian National Railway use)), marshalling yard (British, Hong Kong, Indian, Australian, and Canadian English ( Canadian Pacific Railway use)) or shunting yard (Central Europe) is a railway yard found at some freight train stations, used to separate railway cars onto one of several tracks. First the cars are taken to a track, sometimes called a ''lead'' or a ''drill''. From there the cars are sent through a series of switches called a ''ladder'' onto the classification tracks. Larger yards tend to put the lead on an artificially built hill called a ''hump'' to use the force of gravity to propel the cars through the ladder. Freight trains that consist of isolated cars must be made into trains and divided according to their destinations. Thus the cars must be shunted several times along their route in contrast to a unit train, which carries, for example, cars from the plant to a port, or coal from a mine to the power plan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freight Rail Transport
Rail freight transport is the use of rail transport, railroads and trains to transport cargo as opposed to human passengers. A freight train, cargo train, or goods train is a group of Railroad car#Freight cars, freight cars (US) or goods wagons (International Union of Railways) hauled by one or more locomotives on a railway, transporting cargo all or some of the way between the shipper and the intended destination as part of the logistics, logistics chain. Trains may haul bulk material handling, bulk material, intermodal containers, general freight or specialized freight in purpose-designed cars. Rail freight practices and economics vary by country and region. When considered in terms of ton-miles or tonne-kilometers hauled per unit of energy consumed, rail transport Fuel efficiency in transportation#Trains, can be more efficient than other means of transportation. Maximum economies are typically realized with bulk commodities (e.g., coal), especially when hauled over long dis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Memphis International Airport
Memphis International Airport is a civil-military airport located southeast of Downtown Memphis in Shelby County, Tennessee, United States. It is the primary international airport serving Memphis. It covers and has four runways., effective August 11, 2022 It is home to the FedEx Express global hub, often referred to as the FedEx Superhub or simply the Superhub, which processes many of the company's packages. Non-stop FedEx destinations from Memphis include cities across the continental United States, Canada, Europe, the Middle East, Asia and South America. From 1993 to 2009, Memphis had the largest cargo operations of any airport worldwide. It dropped to the second position in 2010, just behind Hong Kong. It still remained the busiest cargo airport in the United States and in the Western Hemisphere, until 2020, when it once again became the world's busiest cargo handling airport due to the surge in ecommerce partly caused by the COVID-19 pandemic. The airport averages over ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louisville International Airport
Louisville Muhammad Ali International Airport , formerly known as simply Louisville International Airport, is a civil-military airport in Louisville in Jefferson County, Kentucky. The airport covers and has three runways. Its IATA airport code, SDF, is based on the airport's former name, Standiford Field. It has no regularly-scheduled international passenger flights, but it is a port of entry, as it handles numerous international cargo flights through the United Parcel Service's worldwide air hub through its airline, often referred to as UPS Worldport. Over 4.2 million passengers and over 5.7 billion pounds (2.89 million tons) of cargo passed through the airport in 2019. It is also the second-busiest in the United States in terms of cargo traffic, and fourth-busiest for such in the world. The National Plan of Integrated Airport Systems for 2011–2015 categorized it as a "primary commercial service" airport since it has over 10,000 passenger boardings (enplanements) per year. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
UPS Airlines
UPS Airlines is a major American cargo airline based in Louisville, Kentucky. The second-largest cargo airline worldwide ( in terms of freight volume flown), UPS Airlines flies to 815 destinations worldwide. A wholly owned subsidiary of UPS (United Parcel Service) since its launch in 1988, the airline marked its 30th year of operation in 2018. In line with passenger airlines, UPS Airlines operates under the hub-and-spoke model. The airline's primary hub in the United States is at Louisville International Airport, where it built a 5,200,000 square foot facility known as ''UPS Worldport''. In addition to Worldport, UPS has several secondary hubs across the United States and international hubs in Germany, China, and Hong Kong. The pilots of UPS Airlines are represented by the Independent Pilots Association. History 1929-1931: First UPS air service The origin of transporting packages by air for UPS (then United Parcel Service) dates to 1929. Similar to the US Postal Service, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cargo Airline
Cargo airlines (or air freight carriers, and derivatives of these names) are airlines mainly dedicated to the transport of cargo by air. Some cargo airlines are divisions or subsidiaries of larger passenger airlines. In 2018, airline cargo traffic represented 262,333 million tonne-kilometres with a 49.3% load factor: % for dedicated cargo operations, and % within mixed operations (belly freight of passenger airliners). Freight rates Amid the COVID-19 pandemic, adjusted cargo capacity fell by 4.4% in February while air cargo demand also fell by 9.1%, but the near-halt in passenger traffic cut capacity even deeper as half of global air cargo is carried in passenger jets’ bellies. Air freight rates rose as a consequence, from $0.80 per kg for transatlantic cargoes to $2.50-4 per kg, enticing passenger airlines to operate cargo-only flights through the use of preighters, while cargo airlines bring back into service fuel-guzzling stored aircraft, helped by falling oil prices. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feeder Ship
Feeder vessels or feeder ships are medium-size freight ships. In general, a feeder designates a seagoing vessel with an average capacity of . Feeders collect shipping containers from different ports and transport them to central container terminals where they are loaded to bigger vessels, or for further transport into the hub port's hinterland. In that way the smaller vessels feed the larger liners, which carry thousands of containers. Over the years, feeder lines have been established by organizations transporting containers over a predefined route on a regular basis. Feeder ships are often run by companies that also specialize in short sea shipping. These companies not only ship freight to and from major ports like Rotterdam Rotterdam ( , , , lit. ''The Dam on the River Rotte'') is the second largest city and municipality in the Netherlands. It is in the province of South Holland, part of the North Sea mouth of the Rhine–Meuse–Scheldt delta, via the ''"Ne ... for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ship Transport
Maritime transport (or ocean transport) and hydraulic effluvial transport, or more generally waterborne transport, is the transport of people (passengers) or goods (cargo) via waterways. Freight transport by sea has been widely used throughout recorded history. The advent of aviation has diminished the importance of sea travel for passengers, though it is still popular for short trips and pleasure cruises. Transport by water is cheaper than transport by air, despite fluctuating exchange rates and a fee placed on top of freighting charges for carrier companies known as the currency adjustment factor. Maritime transport accounts for roughly 80% of international trade, according to UNCTAD in 2020. Maritime transport can be realized over any distance by boat, ship, sailboat or barge, over oceans and lakes, through canals or along rivers. Shipping may be for commerce, recreation, or military purposes. While extensive inland shipping is less critical today, the major waterway ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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