overhead network
111History of rail transport in Great Britain 1948 - 1994 — This article is part of a series on the History of rail transport in Great Britain The History of rail transport in Great Britain 1948 1994 covers the period when the British railway system was nationalised under British Rail (initially known as… …
112High-voltage direct current — HVDC or high voltage, direct current electric power transmission systems contrast with the more common alternating current systems as a means for the bulk transmission of electrical power. The modern form of HVDC transmission uses technology… …
113Railway electrification system — Railway electrification supplies electrical energy to railway locomotives and multiple units so they can operate without having a reciprocating engine of their own.CharacteristicsThe main advantage of electric traction is a higher power to weight …
114Trams in London — This article is a general one on trams in London. For a specific article on the organisation responsible for running the current generation of trams in London, see London Trams. For a complete list of historical tram operators, see list of tram… …
115British Rail Class 319 — First Capital Connect refreshed Class 319/3 EMUs No. 319369 and 319368 at St. Albans The refreshed i …
116NetApp filer — In computer storage, NetApp filer, known also as NetApp Fabric Attached Storage (FAS), or NetApp s network attached storage (NAS) device are NetApp s offering in the area of Storage Systems. A FAS functions in an enterprise class Storage area… …
117Global serializability — In concurrency control of databases, transaction processing (transaction management), and other transactional distributed applications, Global serializability (or Modular serializability) is a property of a global schedule of transactions. A… …
118HVLAN — Hierarchical VLAN (HVLAN) is a proposed Ethernet standard that extends the use of enterprise Ethernet VLAN (802.1Q) to carrier networks. A number of developments have emerged in recent years to help bring Ethernet, a flexible and cost efficient… …
119Architecture and Civil Engineering — ▪ 2009 Introduction Architecture For Notable Civil Engineering Projects in work or completed in 2008, see Table (Notable Civil Engineering Projects (in work or completed, 2008)). Beijing was the centre of the world of architecture… …
120Serializability — In concurrency control of databases,[1][2] transaction processing (transaction management), and various transactional applications (e.g., transactional memory[3] and software transactional memory), both centralized and distributed, a transaction… …
